WO2012079244A1 - Vehicle multimedia player control chip and drive method thereof - Google Patents

Vehicle multimedia player control chip and drive method thereof Download PDF

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Publication number
WO2012079244A1
WO2012079244A1 PCT/CN2010/079934 CN2010079934W WO2012079244A1 WO 2012079244 A1 WO2012079244 A1 WO 2012079244A1 CN 2010079934 W CN2010079934 W CN 2010079934W WO 2012079244 A1 WO2012079244 A1 WO 2012079244A1
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WO
WIPO (PCT)
Prior art keywords
multimedia
signal
output signal
vehicle
control chip
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Application number
PCT/CN2010/079934
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French (fr)
Chinese (zh)
Inventor
刘江
万勇
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联发科技（新加坡）私人有限公司
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Application filed by 联发科技（新加坡）私人有限公司 filed Critical 联发科技（新加坡）私人有限公司
Priority to CN2010800163013A priority Critical patent/CN102725795A/en
Priority to PCT/CN2010/079934 priority patent/WO2012079244A1/en
Priority to TW100101352A priority patent/TW201227497A/en
Publication of WO2012079244A1 publication Critical patent/WO2012079244A1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs

Definitions

  • the invention relates to multimedia playing, in particular to a vehicle multimedia playing control chip and a method for driving an in-vehicle multimedia playing device. Background technique
  • the playback system watches/listens to the video/audio content presented by the multimedia playback during the journey.
  • the current practice is to configure individual control chips for the front display screen and the rear display screen, that is, the first control chip is responsible for driving the front display screen to play video content,
  • the second control chip is responsible for driving the rear seat display screen to play the video content. Therefore, the video source and the control chip must be properly connected through an external connection line.
  • the video source may include an optical disc player and a television tuner. Therefore, the output ports of the optical disc drive are respectively connected to the first control chip and the second control chip via an external connection line.
  • the output port of the TV tuner also needs to be respectively connected to the first control chip and the second control chip via an external connection line, so that when the first control chip drives the front seat display screen according to the output of the optical drive to play the recorded on the optical disc
  • the second control chip can drive the rear seat display screen according to the output of the television tuner to play the program content of the selected television channel or drive the rear seat display screen based on the same optical drive output to play the recorded on the optical disc. content.
  • the first control chip and the second control chip are provided with an external connection line (which serves as a data transmission line between the first control chip and the second control chip), and an output port of the optical drive.
  • an external connection line which serves as a data transmission line between the first control chip and the second control chip
  • an output port of the optical drive Connected to a single control chip (eg, the first control chip) via an external connection line, and the output port of the TV tuner is also connected to a single control chip (eg, a second control chip) via an external connection line, thus, currently When both the display screen and the rear display screen are to play the content recorded on the optical disc, the data received by the first control chip from the optical drive is transmitted to the second through the data transmission line between the first control chip and the second control chip.
  • the control chip in this way, the first control chip and the second control chip can respectively drive the front seat display screen and the rear seat display screen according to the output of the optical drive.
  • a conventional in-vehicle multimedia playback system requires a complicated external connection line to properly connect a plurality of control chips and a plurality of sources. Therefore, in addition to high production cost, signals due to external connection lines are extremely easy. Attenuation affects the actual multimedia playback quality.
  • the invention provides a vehicle multimedia playback control chip and a method for driving the vehicle multimedia playback device, wherein the optical drive control circuit is integrated in the vehicle multimedia playback control chip, so that signal switching can be completed inside the same chip, so the signal can be effectively reduced. Loss and improve playback quality.
  • the optical drive control circuit is integrated in the vehicle multimedia playback control chip, so that signal switching can be completed inside the same chip, so the signal can be effectively reduced. Loss and improve playback quality.
  • it is easy to control multiple car multimedia playback devices (such as front seat display screen and rear seat display screen) to play the same or different content, thus increasing the use.
  • the flexibility of the above in addition, by integrating the optical drive control circuit with other circuit components in a single chip, the production cost can be greatly reduced.
  • an in-vehicle multimedia playback control chip comprises an optical drive control circuit, a signal input interface, a processing circuit and a drive circuit.
  • the optical drive control circuit is configured to control the optical drive servo operation and process the stored information read from the optical disk to generate the first multimedia input signal.
  • the signal input interface is configured to receive a second multimedia input signal.
  • the processing circuit is coupled to the optical drive control circuit and the signal input interface. When the processing circuit receives at least one of the first multimedia output signal and the second multimedia input signal, the processing circuit generates at least one multimedia output signal accordingly.
  • the driving circuit is coupled to the processing circuit for driving at least one in-vehicle multimedia playing device according to the at least one multimedia output signal.
  • a method of driving an in-vehicle multimedia playing device comprises the following steps: setting a vehicle multimedia playback control chip, wherein the optical drive control circuit and the signal input interface are integrated in the vehicle multimedia playback control chip, wherein the optical drive control circuit is configured to control the optical disk drive operation and process the read from the optical disk. And storing the information to generate a first multimedia input signal, and the signal input interface is configured to receive the second multimedia input signal; and when receiving the first multimedia output signal and the second multimedia input signal At least one of the times, the in-vehicle multimedia playback control chip is used to generate at least one multimedia output signal, and at least one in-vehicle multimedia playback device is driven according to the at least one multimedia output signal.
  • FIG. 1 is a schematic diagram of an in-vehicle multimedia playing system to which the in-vehicle multimedia playback control chip of the present invention is applied.
  • FIG. 2 is a schematic diagram of a first operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 3 is a schematic diagram of a second operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 4 is a schematic diagram showing a third operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 5 is a schematic diagram of a fourth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 6 is a schematic diagram of a fifth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 7 is a schematic diagram of a sixth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 8 is a schematic diagram of a seventh operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 9 is a schematic diagram showing an eighth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 10 is a schematic diagram showing a ninth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
  • FIG. 11 is a schematic diagram of a tenth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1. detailed description
  • FIG. 1 is a schematic diagram of an in-vehicle multimedia playing system to which an in-vehicle multimedia playback control chip of the present invention is applied.
  • the in-vehicle multimedia playing system 100 includes, but is not limited to, an in-vehicle multimedia playing control chip 102, at least one in-vehicle multimedia playing device (such as a front seat display screen 104 and a rear seat display screen 106), an optical disk accessing mechanism 108, and at least one external receiving source.
  • the in-vehicle multimedia playback control chip 102 includes at least the optical disc drive control circuit 122, the signal.
  • Input interface 124, processing circuit 126, and drive circuit 128 optical drive control circuit 122 may include circuitry (e.g., servo control circuitry) required to control optical disc access mechanism 108 and processing from optical discs (e.g., Blu-ray Disc (Blu-ray Disc, a circuit for storing information (for example, a decoding circuit) read by a BD) or a digital versatile disc (DVD).
  • circuitry e.g., servo control circuitry
  • optical discs e.g., Blu-ray Disc (Blu-ray Disc, a circuit for storing information (for example, a decoding circuit) read by a BD) or a digital versatile disc (DVD).
  • Blu-ray Disc Blu-ray Disc
  • DVD digital versatile disc
  • the optical disc drive control circuit 122 is for controlling the operation of the optical disc drive and processing the optical disc.
  • the stored stored information (eg, video content) is used to generate a first multimedia input signal S1.
  • the optical disc access mechanism 108 includes any component that reads the stored information recorded on the optical disc.
  • the optical disc access mechanism 108 may include an optical pick-up unit (OPU), optical optical reading and writing.
  • OPU optical pick-up unit
  • the signal input interface 124 can be used to receive information output by other sources than the optical disc (such as the content of the television program output by the television tuner 110, the positioning information provided by the global positioning system receiver 112, or the memory card 114). The stored data), and accordingly generates a second multimedia input signal S2.
  • the processing circuit 126 is coupled to the optical drive control circuit 122 and the signal input interface 124, and receives the first multimedia output signal S1 and the second multimedia input. At least one of the incoming signals S2, the processing circuit 126 generates at least one multimedia output signal accordingly.
  • the processing circuit 126 includes a first processing unit 132 and a second processing unit 134, and when the first processing unit 132 Upon receiving the first multimedia input signal S1, the first processing unit 132 generates a first multimedia output signal S3_1 according to the received first multimedia input signal S1.
  • the first processing unit 132 may The first multimedia input signal S1 performs image scaling processing such that the image resolution of the first multimedia output signal S3_1 conforms to the actual playback requirement. Please note that if the first multimedia input signal S1 The image processing resolution originally meets the actual playback requirement.
  • the first processing unit 132 receives the first multimedia input signal S1, the first processing unit 132 can bypass the first multimedia input signal S1.
  • the first multimedia input signal S1 is directly outputted as the first multimedia output signal S3_1.
  • the processing unit 132 may have other according to the actual needs of signal processing capabilities (e.g., PIP (Picture-In-Picture, PIP) processing capability).
  • PIP Picture-In-Picture, PIP
  • the second processing unit 134 when receiving the second multimedia input signal S2, the second processing unit 134 generates the second multimedia output signal S3_2 according to the received second multimedia input signal S2.
  • the second processing unit 134 decodes the second multimedia input signal S2 (if the second multimedia input signal S2 delivers the encoded processed information) and/or the image scaling process (if the first The image resolution of the second multimedia input signal S2 does not meet the actual playback requirements.
  • the second processing unit 134 may also have other signals according to actual needs. Processing power (such as the processing power of picture-in-picture).
  • the driving circuit 128 is coupled to the processing circuit 126 for driving at least one in-vehicle multimedia playback device (eg, the front seat display screen 104 and/or the rear according to at least one multimedia output signal (eg, S3_1 and/or S3_2) output by the processing circuit 126.
  • the display screen 106 The driving circuit 128 includes a first switching unit 136, a second switching unit 138, a first playing unit 140, and a second playing unit 142.
  • the first switching unit 136 has a first input terminal N11, a second input terminal N12, and an output terminal N13, and the first input terminal Ni1 and the second input terminal N12 are respectively coupled to the first processing unit 132 and The second processing unit 134, therefore, the output terminal N13 of the first switching unit 136 can selectively output the first multimedia output signal S3_1 or the second multimedia output signal S3_2 ; likewise, the second switching unit 138 has the An input terminal N21, a second input terminal N22, and an output terminal N23, and the first input terminal N21 and the second input terminal N22 are respectively coupled to the first processing unit 132 and the second processing unit 134.
  • the second switching unit 138 The output terminal N23 can selectively output the first multimedia output signal S3_1 or the second multimedia output signal S3_2.
  • the first playing unit 140 is coupled to the output end N13 of the first switching unit 136 for driving the first in-vehicle multimedia playing device (for example, the front seat display screen 104) according to the output of the first switching unit 136, and further, the second playing.
  • the unit 142 is coupled to the output end N23 of the second switch unit 138.
  • the second in-vehicle multimedia playback device eg, the rear seat display screen 106) is driven in accordance with the output of the second switch unit 138.
  • the in-vehicle multimedia playback control chip 102 can also set other components according to actual requirements.
  • the in-vehicle multimedia playback control in this embodiment The chip 102 further includes a system bus 121 and a microprocessor 123.
  • the microprocessor 123 can control the overall operation of the in-vehicle multimedia playback control chip 102 through the system bus 121.
  • the microprocessor 123 The first processing unit 132 can be controlled to bypass the received first multimedia input signal S1.
  • the in-vehicle multimedia playing system 100 may further provide a storage component (for example, the memory 116) externally connected to the in-vehicle multimedia playback control chip 102. Therefore, the first processing unit 132 and the second processing unit 134 may utilize the memory 116 external to the chip. To temporarily store the data to be processed and the results produced during the signal processing/data operation.
  • a storage component for example, the memory 116
  • the in-vehicle multimedia playback control chip 102 can be used to drive two in-vehicle multimedia playback devices (such as the front seat display screen 104 and the rear seat display screen 106).
  • the present invention is not limited thereto.
  • the in-vehicle multimedia playback control chip 102 can also be used to drive more than two in-vehicle multimedia playback devices (in this case, the processing circuit 126 will provide more than two processing units, and the driving circuit 128). More than two switch units and more than two play units will be set.
  • FIG. 2 is a schematic diagram of a first operation example of the in-vehicle multimedia playback control chip 102 shown in FIG.
  • the optical disc drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and
  • the first multimedia input signal S1 is outputted to the first processing unit 132.
  • the first processing unit 132 generates the first multimedia output signal S3_1 according to the first multimedia input signal S1.
  • the first switching unit 136 and the second switching unit 138 may be controlled according to current user settings via appropriate control (the first switching unit 136 is connected to the first input terminal Ni). l and the output terminal N13, and the second switch unit 138 are connected to the first input terminal N21 and the output terminal N23, such that the output terminals N13, N23 of the first switch unit 136 and the second switch unit 138 will output the first Multimedia output signal S3_l.
  • FIG. 3 is a schematic diagram of a second operation example of the in-vehicle multimedia playback control chip 102 shown in FIG.
  • the signal input interface 124 receives and outputs the first Two multimedia input signals S2 (such as television signals output by the television tuner 110) to the second processing unit 134, and then, the second processing unit 134 generates the second multimedia according to the second multimedia input signal S2.
  • the signal S3_2 is output.
  • the first switch unit 136 and the second switch unit 138 can be controlled according to current user settings via appropriate control (1, the first switch unit 136 is connected to the second input terminal N12).
  • the second input terminal N22 and the output terminal N23 are connected to the output terminal N13, and the second switch unit 138, so that the output terminals N13 and N23 of the first switch unit 136 and the second switch unit 138 output the second most The media outputs a signal S3_2. Since the first playback unit 140 and the second playback unit 142 respectively drive the front seat display screen 104 and the rear seat display screen 106 according to the same input signal (ie, the second multimedia output signal S3_2), the front seat passenger and the rear seat The passenger can view the video content provided by the same external signal through the front seat display screen 104 and the rear seat display screen 106.
  • FIG. 4 is a schematic diagram of a third operation example of the in-vehicle multimedia playback control chip 102 shown in FIG.
  • the optical drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the first multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs the second multimedia input signal S2.
  • the first processing unit 132 generates the first multimedia output signal S3_1 and the second processing according to the first multimedia input signal S1.
  • the unit 134 generates the second multimedia output signal S3_2 according to the second multimedia input signal S2.
  • the first switching unit 136 and the second switching unit 138 may be controlled according to current user settings via appropriate control (the first switching unit 136 is connected to the first input terminal Ni).
  • the second switch unit 138 is connected to the second input terminal N22 and the output terminal N23, such that the output terminal N13 of the first switch unit 136 outputs the first multimedia output signal S3_l, and The output terminal N23 of the second switching unit 138 outputs a second multimedia output signal S3_2. Since the first playing unit 140 and the second playing unit 142 respectively receive the first multimedia output signal S3_1 and the second multimedia output signal S3_2, the front seat passenger can view the recorded in the optical disc through the front seat display screen 104. The video content, as well as the rear seat passengers, can view the video content provided by the external source through the rear seat display screen 106.
  • FIG. 5 is a fourth type of the vehicle multimedia playback control chip 102 shown in FIG. Schematic diagram of the operation example.
  • the optical drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the first multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs the second multimedia input signal S2.
  • the first processing unit 132 generates the first multimedia output signal S3_1 and the second processing according to the first multimedia input signal S1.
  • the unit 134 generates the second multimedia output signal S3_2 according to the second multimedia input signal S2.
  • the first switch unit 136 and the second switch unit 138 can be controlled according to the current user settings via appropriate control.
  • the first switch unit 136 is connected to the second input terminal N12.
  • the first input terminal N21 and the output terminal N23 are connected to the output terminal N13, and the second switch unit 138.
  • the output terminal N13 of the first switch unit 136 outputs the second multimedia output signal S3_2, and the second The output terminal N23 of the switching unit 138 outputs a first multimedia output signal S3_1. Since the first playing unit 140 and the second playing unit 142 respectively receive the second multimedia output signal S3_2 and the first multimedia output signal S3_1, the rear seat passenger can watch the recorded in the optical disc through the rear seat display screen 106. The video content, as well as the front seat passengers, can view the video content provided by the external source through the front seat display screen 104.
  • the processing circuit 126 (for example, a video processing circuit) in the in-vehicle multimedia playback control chip 102 can also support the picture-in-picture processing.
  • the processing circuit 126 receives the first multimedia input signal S1 at the same time. And the second multimedia input signal S2, the processing circuit 126 performs a picture-in-picture process on the received first multimedia output signal S1 and the second multimedia input signal S2 to generate at least one multimedia output signal ( For example, S3_l and / or S3-2).
  • FIG. 6 is a schematic diagram of a fifth operation example of the in-vehicle multimedia playback control chip 102 shown in FIG.
  • the current seat passenger wants to watch the video content recorded on the optical disc through the main screen (the mother screen) of the front seat display screen 104, and also wants to watch the video other than the optical disc in the secondary screen (sub screen) of the front seat display screen 104.
  • the optical disc drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the video.
  • a multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs a second multimedia input signal S2 (eg, a television signal output by the television tuner 110) S2 to the second processing unit 134.
  • a second multimedia input signal S2 eg, a television signal output by the television tuner 110
  • the first processing unit 132 and the second processing unit 134 are both coupled to the system bus 121 , and therefore, the first processing The unit 132 can further transmit the received first multimedia input signal S1 to the second processing unit 134 through the system bus 121. Similarly, the second processing unit 132 can further receive the received second multimedia through the system bus 121.
  • the body input signal S2 is transmitted to the first processing unit 132, and then the first processing unit 132 performs a picture-in-picture process for the first multimedia input signal S1 and the second multimedia input signal S2, so that the first multimedia A portion of the original image frame of the input signal S1 is covered by the reduced image frame of the second multimedia input signal S2, and the second processing unit 134 also targets the first multimedia input signal S1 and the second
  • the multimedia input signal S2 performs a picture-in-picture process such that a portion of the original image frame of the second multimedia input signal S2 is covered by the reduced image frame of the first multimedia input signal S1.
  • the first switching unit 136 and the second switching unit 138 can be controlled according to the current user settings via appropriate control (the microprocessor 123 is connected to the first input terminal Ni). l and the output terminal N13, and the second switch unit 138 are connected to the second input terminal N22 and the output terminal N23, such that the output terminal N13 of the first switch unit 136 outputs the first processing unit 132 through the picture-in-picture processing
  • the first multimedia output signal S3_1 is generated, and the output terminal N23 of the second switching unit 138 outputs the second multimedia output signal S3_2 generated by the second processing unit 134 through the picture-in-picture processing.
  • the front seat passenger can watch the picture-in-picture playback through the front seat display screen 104. (where the mother screen displays the video content recorded on the disc, and the sub screen displays the video content provided by the external source), and the rear seat passenger can watch the picture-in-picture playback through the rear seat display screen 106 (where the mother screen is displayed)
  • the video content provided by the external source, and the sub-picture shows the content of the video recorded on the disc).
  • FIG. 7 is a schematic diagram of a sixth operation example of the in-vehicle multimedia playback control chip 102 shown in FIG.
  • the rear seat passenger wants to view the movie content recorded in the optical disc through the main screen (; mother screen) of the rear seat display screen 106, it is also desired to be viewed from the secondary screen (sub-screen) of the rear seat display screen 106.
  • the optical disc drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the video.
  • a multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs a second multimedia input signal S2 (eg, a television signal output by the television tuner 110) to the second processing unit 134.
  • the first processing unit 132 can further transmit the received first multimedia input signal S1 to the second processing unit 134 through the system bus 121, and the second processing unit 132 can also use the system bus 121 to
  • the received second multimedia input signal S2 is transmitted to the first processing unit 132, and then, the first processing unit 132 inputs the first multimedia.
  • the input signal SI and the second multimedia input signal S2 perform picture-in-picture processing, so that a part of the original image frame of the first multimedia input signal S1 is reduced by the second multimedia input signal S2.
  • the second processing unit 134 also performs a picture-in-picture process for the first multimedia input signal S1 and the second multimedia input signal S2, so that the second multimedia input signal S2 is in the original image frame.
  • the first switch unit 136 and the second switch unit 138 can be controlled according to the current user settings via appropriate control.
  • the first switch unit 136 is connected to the second input terminal N12.
  • the first input terminal N21 and the output terminal N23 are connected to the output terminal N13, and the second switch unit 138, so that the output terminal N13 of the first switch unit 136 outputs the second processing unit 134 to generate the process by the picture-in-picture process.
  • the second multimedia output signal S3_2, and the output terminal N23 of the second switching unit 138 outputs the first multimedia output signal S3_1 generated by the first processing unit 132 through the picture-in-picture processing.
  • the rear seat passenger can view the picture-in-picture through the rear seat display screen 106.
  • Playback where the mother screen displays the video content recorded on the disc, and the sub screen displays the video content provided by the external source
  • the front seat passenger can watch the picture-in-picture playback through the front seat display screen 104 (where the mother screen is displayed)
  • the video content provided by the external source, and the sub-picture shows the content of the video recorded on the disc).
  • both the front seat display screen 104 and the rear seat display screen 106 simultaneously display the output of the picture-in-picture
  • the chip 102 driving one of the front seat display screen 104 and the rear seat display screen 106 to display the output of the picture-in-picture is also in accordance with the spirit of the present invention, as shown in FIG. 8 to FIG. 11 , and FIG. 8 to FIG.
  • a seventh operational example of the illustrated vehicle multimedia playback control chip 102 - a schematic diagram of a tenth operational example. Since the operation of each of the operation examples in FIGS. 8 to 11 can be easily understood by those skilled in the art based on the above paragraphs, no further details are provided herein.
  • the in-vehicle multimedia playback control chip 102 simultaneously drives a plurality of in-vehicle multimedia playback devices (for example, the front seat display screen 104 and the rear seat display screen 106).
  • a plurality of in-vehicle multimedia playback devices for example, the front seat display screen 104 and the rear seat display screen 106.
  • the in-vehicle multimedia playback control chip 102 only needs to drive the front seat.
  • One of the display screen 104 and the rear seat display screen 106 for example, at least one of the first processing circuit 132, the first switching unit 136, and the first playback unit 140 corresponding to the front seat display screen 104 is disabled (disabled Or at least one of the second processing circuit 134, the second switching unit 138, and the second playback unit 142 corresponding to the rear seat display screen 106 is disabled, so that only one display screen (front seat)
  • the display screen 104 or the rear seat display screen 106) will be driven, however, the above is merely illustrative, and It is also possible to control whether the front seat display screen 104 and the rear seat display screen 106 are to be driven.
  • video playback is used (that is, the processing circuit 126 is a video processing circuit, the driving circuit 128 is a video driving circuit, and the first and second processing units 132 and 134 are video processing units, and The second playback unit 140, 142 is a video playback unit.
  • the in-vehicle multimedia playback control chip 102 disclosed in the present invention is not limited to this application, that is, without in violation of the spirit of the present invention, the vehicle multimedia The playback control chip 102 can also be applied to audio playback.
  • the in-vehicle multimedia playback device driven by the first playback unit 140 and the second playback unit 142 is an audio playback device (eg, a speaker), so that the first switch unit 140 and the second switch unit are used.
  • an audio playback device eg, a speaker
  • different audio playback devices can play the same audio content or different audio content, and this design change is also within the scope of the present invention in accordance with the spirit of the present invention.
  • in-vehicle is not intended to limit the chip architecture disclosed in the present invention, and can be applied only to the automotive field, that is, other vehicles that implement the multimedia playback control chip using the chip architecture of the present invention. It can also be considered that the in-vehicle multimedia playback control chip disclosed in the present invention is used.
  • the vehicle multimedia playing control chip is set, wherein the optical drive control circuit and the signal input interface are integrated in the vehicle multimedia playing control chip, and the optical drive control circuit is used for Controlling the optical disk drive operation and processing the stored information read from the optical disk to generate a first multimedia input signal, and the signal input interface is configured to receive the second multimedia input signal; and when the first multimedia is received
  • the at least one of the output signal and the second multimedia input signal is used to generate at least one multimedia output signal according to the at least one multimedia output signal, and to drive at least one in-vehicle multimedia playback device according to the at least one multimedia output signal.
  • the method for driving the in-vehicle multimedia playing device of the present invention can also support the processing of the picture-in-picture. Therefore, when the first multimedia input signal and the second multimedia input signal are simultaneously received, the received The first multimedia output signal and the second multimedia input signal perform a picture-in-picture process to generate the at least one multimedia output signal.
  • the invention integrates the optical drive control circuit into the vehicle multimedia playback control chip. Since the vehicle multimedia playback control chip itself also has a signal input interface, the signal switching can be completed inside the same chip, and is effective. Reduce the loss of signal and improve the playback quality. In addition, through the internal signal switching of the same chip, it is easy to control multiple car multimedia playback devices (such as front seat display screen and rear seat display screen) to play the same or different content. The flexibility of use can be increased. Furthermore, by integrating the optical drive control circuit with other circuit components in a single chip, the production cost can be greatly reduced.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

A vehicle multimedia player control chip and a drive method thereof are provided. The vehicle multimedia player control chip (102) comprises: a drive control circuit (122), a signal input interface (124), a processing circuit (126) and a drive circuit (128). The drive control circuit (122) is used to control the drive servo operation and process stored information read by a Compact Disc (CD) for generating a first multimedia input signal. The signal input interface (124) is used to receive a second multimedia input signal. The processing circuit (126) is coupled to the drive control circuit (122) and the signal input interface (124). When the processing circuit (126) receives at least one of the first multimedia output signal and the second multimedia input signal, the processing circuit (126) therefore generates at least one multimedia output signal. The drive circuit (128) is coupled to the processing circuit (126), and used to drive at least one vehicle multimedia player device according to at least one multimedia output signal. With the present solution, the signal loss is effectively reduced, the playing quality is improved, the use flexibility is enhanced, and the production cost is significantly reduced.

Description

车载多媒体播放控制芯片以及驱动方法 技术领域  Vehicle multimedia playback control chip and driving method
本发明有关于多媒体播放， 尤指一种车载多媒体播放控制芯片以及驱动车载多媒体 播放装置的方法。 背景技术  The invention relates to multimedia playing, in particular to a vehicle multimedia playing control chip and a method for driving an in-vehicle multimedia playing device. Background technique
随着科技的进步， 多媒体播放***的应用已延伸至汽车领域， 近年来， 除了前座显 示屏幕之外， 后座显示屏幕的设置也逐渐普遍， 因此， 前座乘客以及后座乘客均能通过 车载多媒体播放***于旅程中观赏 /聆听多媒体播放所呈现的视频 /音频内容。  With the advancement of technology, the application of multimedia playback systems has been extended to the automotive field. In recent years, in addition to the front display screens, the rear seat display screens have become more common. Therefore, front-seat passengers and rear-seat passengers can pass the vehicle multimedia. The playback system watches/listens to the video/audio content presented by the multimedia playback during the journey.
对于通常的车载多媒体播放***而言， 目前的作法是针对前座显示屏幕以及后座显 示屏幕分别配置个别的控制芯片， 亦即， 由第一控制芯片负责驱动前座显示屏幕以播放 视频内容， 而由第二控制芯片负责驱动后座显示屏幕以播放视频内容， 因此， 视频源 (video source)与这些控制芯片之间必须通过外部连接线来进行适当连接。 举例来说， 视 频源可包括光驱 (optical disc player)与电视调谐器 (television tuner), 因此， 光驱的输出端 口需经由外部连接线分别连接至第一控制芯片与第二控制芯片， 同样地， 电视调谐器的 输出端口亦需经由外部连接线分别连接至第一控制芯片与第二控制芯片， 如此一来， 当 第一控制芯片依据光驱的输出来驱动前座显示屏幕以播放光盘上所记录的内容时， 第二 控制芯片便可依据电视调谐器的输出来驱动后座显示屏幕以播放所选取的电视频道的节 目内容或者基于相同的光驱输出来驱动后座显示屏幕以播放光盘上所记录的内容。  For the conventional in-vehicle multimedia playback system, the current practice is to configure individual control chips for the front display screen and the rear display screen, that is, the first control chip is responsible for driving the front display screen to play video content, The second control chip is responsible for driving the rear seat display screen to play the video content. Therefore, the video source and the control chip must be properly connected through an external connection line. For example, the video source may include an optical disc player and a television tuner. Therefore, the output ports of the optical disc drive are respectively connected to the first control chip and the second control chip via an external connection line. The output port of the TV tuner also needs to be respectively connected to the first control chip and the second control chip via an external connection line, so that when the first control chip drives the front seat display screen according to the output of the optical drive to play the recorded on the optical disc In the content, the second control chip can drive the rear seat display screen according to the output of the television tuner to play the program content of the selected television channel or drive the rear seat display screen based on the same optical drive output to play the recorded on the optical disc. content.
此外， 于另一通常作法中， 第一控制芯片与第二控制芯片彼此之间设置有外部连接 线 （其作为第一控制芯片与第二控制芯片之间的数据传输线） ， 而光驱的输出端口则经 由外部连接线而仅连接至单一控制芯片 （例如第一控制芯片） ， 以及电视调谐器的输出 端口亦经由外部连接线而仅连接至单一控制芯片 （例如第二控制芯片） ， 因此， 当前座 显示屏幕与后座显示屏幕均要播放光盘上所记录的内容时， 第一控制芯片自光驱所接收 的数据会通过第一控制芯片与第二控制芯片之间的数据传输线而传输至第二控制芯片， 如此一来， 第一控制芯片与第二控制芯片便可依据光驱的输出来分别驱动前座显示屏幕 与后座显示屏幕。  In addition, in another common method, the first control chip and the second control chip are provided with an external connection line (which serves as a data transmission line between the first control chip and the second control chip), and an output port of the optical drive. Connected to a single control chip (eg, the first control chip) via an external connection line, and the output port of the TV tuner is also connected to a single control chip (eg, a second control chip) via an external connection line, thus, currently When both the display screen and the rear display screen are to play the content recorded on the optical disc, the data received by the first control chip from the optical drive is transmitted to the second through the data transmission line between the first control chip and the second control chip. The control chip, in this way, the first control chip and the second control chip can respectively drive the front seat display screen and the rear seat display screen according to the output of the optical drive.
由上可知， 通常的车载多媒体播放***需要复杂的外部连接线来适当地连接多个控 制芯片与多个讯源， 因此， 除了生产成本较高以外， 也极容易因为外部连接线所造成的 信号衰减而影响实际的多媒体播放质量。 发明内容 As can be seen from the above, a conventional in-vehicle multimedia playback system requires a complicated external connection line to properly connect a plurality of control chips and a plurality of sources. Therefore, in addition to high production cost, signals due to external connection lines are extremely easy. Attenuation affects the actual multimedia playback quality. Summary of the invention
本发明提供一种车载多媒体播放控制芯片以及驱动车载多媒体播放装置的方法， 其 中光驱控制电路整合于车载多媒体播放控制芯片中， 因此， 信号切换可于同一芯片的内 部完成， 故可有效地降低信号的耗损并提升播放质量， 此外， 通过同一芯片的内部的信 号切换， 可轻易地控制多个车载多媒体播放装置 （例如前座显示屏幕及后座显示屏幕） 播放相同或不同的内容， 因而可增加使用上的弹性， 再者， 通过将光驱控制电路与其它 电路元件整合于单一芯片中， 生产成本亦可大幅降低。  The invention provides a vehicle multimedia playback control chip and a method for driving the vehicle multimedia playback device, wherein the optical drive control circuit is integrated in the vehicle multimedia playback control chip, so that signal switching can be completed inside the same chip, so the signal can be effectively reduced. Loss and improve playback quality. In addition, through the internal signal switching of the same chip, it is easy to control multiple car multimedia playback devices (such as front seat display screen and rear seat display screen) to play the same or different content, thus increasing the use. The flexibility of the above, in addition, by integrating the optical drive control circuit with other circuit components in a single chip, the production cost can be greatly reduced.
依据本发明的实施例， 其揭露一种车载多媒体播放控制芯片。 该车载多媒体播放控 制芯片包括光驱控制电路、 信号输入接口、 处理电路以及驱动电路。 该光驱控制电路用 以控制光驱伺服运作， 并处理自光盘所读取的储存信息来产生第一多媒体输入信号。 该 信号输入接口用以接收第二多媒体输入信号。 该处理电路耦接于该光驱控制电路以及该 信号输入接口。 当该处理电路接收到该第一多媒体输出信号以及该第二多媒体输入信号 中至少其一时， 该处理电路据此产生至少一多媒体输出信号。 该驱动电路耦接于该处理 电路， 用以依据该至少一多媒体输出信号来驱动至少一车载多媒体播放装置。  According to an embodiment of the present invention, an in-vehicle multimedia playback control chip is disclosed. The in-vehicle multimedia playback control chip comprises an optical drive control circuit, a signal input interface, a processing circuit and a drive circuit. The optical drive control circuit is configured to control the optical drive servo operation and process the stored information read from the optical disk to generate the first multimedia input signal. The signal input interface is configured to receive a second multimedia input signal. The processing circuit is coupled to the optical drive control circuit and the signal input interface. When the processing circuit receives at least one of the first multimedia output signal and the second multimedia input signal, the processing circuit generates at least one multimedia output signal accordingly. The driving circuit is coupled to the processing circuit for driving at least one in-vehicle multimedia playing device according to the at least one multimedia output signal.
依据本发明的实施例， 其另揭露一种驱动车载多媒体播放装置的方法。 该方法包括 下列步骤： 设置一车载多媒体播放控制芯片， 其中光驱控制电路以及信号输入接口均整 合于该车载多媒体播放控制芯片中， 该光驱控制电路用以控制光驱伺服运作并处理自光 盘所读取的储存信息来产生第一多媒体输入信号， 以及该信号输入接口用以接收第二多 媒体输入信号； 以及当接收到该第一多媒体输出信号以及该第二多媒体输入信号中至少 其一时， 使用该车载多媒体播放控制芯片来据此产生至少一多媒体输出信号， 并依据该 至少一多媒体输出信号来驱动至少一车载多媒体播放装置。 附图说明  According to an embodiment of the present invention, a method of driving an in-vehicle multimedia playing device is further disclosed. The method comprises the following steps: setting a vehicle multimedia playback control chip, wherein the optical drive control circuit and the signal input interface are integrated in the vehicle multimedia playback control chip, wherein the optical drive control circuit is configured to control the optical disk drive operation and process the read from the optical disk. And storing the information to generate a first multimedia input signal, and the signal input interface is configured to receive the second multimedia input signal; and when receiving the first multimedia output signal and the second multimedia input signal At least one of the times, the in-vehicle multimedia playback control chip is used to generate at least one multimedia output signal, and at least one in-vehicle multimedia playback device is driven according to the at least one multimedia output signal. DRAWINGS
图 1为应用本发明车载多媒体播放控制芯片的车载多媒体播放***的示意图。  1 is a schematic diagram of an in-vehicle multimedia playing system to which the in-vehicle multimedia playback control chip of the present invention is applied.
图 2为图 1所示车载多媒体播放控制芯片的第一种操作范例的示意图。  FIG. 2 is a schematic diagram of a first operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 3为图 1所示车载多媒体播放控制芯片的第二种操作范例的示意图。  FIG. 3 is a schematic diagram of a second operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 4为图 1所示车载多媒体播放控制芯片的第三种操作范例的示意图。  4 is a schematic diagram showing a third operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 5为图 1所示车载多媒体播放控制芯片的第四种操作范例的示意图。  FIG. 5 is a schematic diagram of a fourth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 6为图 1所示车载多媒体播放控制芯片的第五种操作范例的示意图。  FIG. 6 is a schematic diagram of a fifth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 7为图 1所示车载多媒体播放控制芯片的第六种操作范例的示意图。  FIG. 7 is a schematic diagram of a sixth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 8为图 1所示车载多媒体播放控制芯片的第七种操作范例的示意图。 图 9为图 1所示车载多媒体播放控制芯片的第八种操作范例的示意图。 FIG. 8 is a schematic diagram of a seventh operation example of the in-vehicle multimedia playback control chip shown in FIG. 1. FIG. 9 is a schematic diagram showing an eighth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 10为图 1所示车载多媒体播放控制芯片的第九种操作范例的示意图。  FIG. 10 is a schematic diagram showing a ninth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1.
图 11为图 1所示车载多媒体播放控制芯片的第十种操作范例的示意图。 具体实施方式  FIG. 11 is a schematic diagram of a tenth operation example of the in-vehicle multimedia playback control chip shown in FIG. 1. detailed description
在说明书及后续的权利要求当中使用了某些词汇来指称特定的元件。 所属领域的技 术人员应可理解， 制造商可能会用不同的名词来称呼同样的元件。 本说明书及前附的权 利要求书并不以名称的差异来作为区分元件的方式， 而是以元件在功能上的差异来作为 区分的基准。 在通篇说明书及前附的权利要求书当中所提及的 "包括" 为开放式的用 语， 故应解释成 "包括但不限定于" 。 另外， "耦接"一词在此包括任何直接及间接的 电气连接手段。 因此， 若文中描述第一装置耦接于第二装置， 则代表该第一装置可直接 电气连接于该第二装置， 或通过其他装置或连接手段间接地电气连接至该第二装置。  Certain terms are used throughout the description and following claims to refer to particular elements. It will be understood by those skilled in the art that manufacturers may refer to the same components by different nouns. The present specification and the appended claims do not use the difference in the name as the means for distinguishing the elements, but the difference in function of the elements as the basis for the distinction. The term "including" as used throughout the specification and the appended claims is an open term and should be interpreted as "including but not limited to". In addition, the term "coupled" is used herein to include any direct and indirect electrical connection. Thus, if the first device is described as being coupled to the second device, it is meant that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device by other means or means.
请参阅图 1， 图 1为应用本发明车载 (in-vehicle)多媒体播放控制芯片的车载多媒体播 放***的示意图。 车载多媒体播放*** 100包括 (但不局限于)车载多媒体播放控制芯片 102、 至少一车载多媒体播放装置 （例如前座显示屏幕 104与后座显示屏幕 106) 、 光盘 存取机构 108 以及至少一外接讯源 （例如电视调谐器 110、 全球定位***接收机 (GPS reCeiver)112以及存储卡 (例如 SD卡) 114等等） 本实施例中， 车载多媒体播放控制芯片 102至少包括光驱控制电路 122、 信号输入接口 124、 处理电路 126以及驱动电路 128 光驱控制电路 122可包括控制光盘存取机构 108所需的电路 （例如伺服 (servo)控制电 路） 以及处理自光盘 (例如蓝光光盘 (Blu-ray Disc, BD)或数字多功能光盘 (Digital Versatile Disc, DVD))所读取的储存信息的电路 (例如译码电路） ， 换句话说， 光驱控制电路 122是 用以控制光驱伺服运作， 并处理自光盘所读取的储存信息 (例如视频内容)来产生第一多 媒体输入信号 Sl。 请注意， 光盘存取机构 108包括将光盘上所记录的储存信息读取出来 的任何元件， 例如光盘存取机构 108可包括光学读写头 (optical pick-up unit, OPU)、 承载 光学读写头的滑车 (sled)、 控制滑车移动的滑车马达 (sled motor), 控制光学读写头的聚焦 (focusing)与循轨 (tracking)的致动器 (actuator)以及带动光盘旋转的转轴马达 (spindle motor) 信号输入接口 124可用来接收除了光盘之外的其他讯源所输出的信息 （例如电视调 谐器 110所输出的电视节目内容、 全球定位***接收机 112所提供的定位信息或存储卡 114所储存的数据)， 并据此产生第二多媒体输入信号 S2。 处理电路 126耦接于光驱控制 电路 122以及信号输入接口 124， 并于接收到第一多媒体输出信号 S1以及第二多媒体输 入信号 S2中至少其一时， 处理电路 126便据此产生至少一多媒体输出信号， 于本实施例 中， 处理电路 126包括第一处理单元 132以及第二处理单元 134， 而当第一处理单元 132 接收到第一多媒体输入信号 S1时， 第一处理单元 132会依据所接收的第一多媒体输入信 号 S1来产生第一多媒体输出信号 S3_l， 例如， 第一处理单元 132会对第一多媒体输入 信号 S1 进行影像缩放 (scaling)处理， 以使得第一多媒体输出信号 S3_l 的影像分辨率 (resolution)符合实际播放需求， 请注意， 假若第一多媒体输入信号 S1 的影像分辨率原本 就符合实际播放需求， 则于第一处理单元 132接收到第一多媒体输入信号 S1时， 第一处 理单元 132可旁通 (bypass)第一多媒体输入信号 Sl， 使得第一多媒体输入信号 S1直接输 出而作为第一多媒体输出信号 S3_l， 然而， 此仅作为范例说明， 并非本发明的限制， 亦 BP , 第一处理单元 132亦可依据实际需求而具有其它的信号处理能力 （例如画中画 (Picture-In-Picture, PIP)的处理能力） 。 对于第二处理单元 134而言， 当接收到第二多媒 体输入信号 S2时， 第二处理单元 134会依据所接收的第二多媒体输入信号 S2来产生第 二多媒体输出信号 S3_2， 例如， 第二处理单元 134会对第二多媒体输入信号 S2进行译 码 (若第二多媒体输入信号 S2所传递的是编码处理过的信息)及 /或影像缩放处理 （若第二 多媒体输入信号 S2的影像分辨率不符合实际播放需求） ， 然而， 此仅作为范例说明， 并 非本发明的限制， 亦即， 第二处理单元 134亦可依据实际需求而具有其它的信号处理能 力 （例如画中画的处理能力） 。 Please refer to FIG. 1. FIG. 1 is a schematic diagram of an in-vehicle multimedia playing system to which an in-vehicle multimedia playback control chip of the present invention is applied. The in-vehicle multimedia playing system 100 includes, but is not limited to, an in-vehicle multimedia playing control chip 102, at least one in-vehicle multimedia playing device (such as a front seat display screen 104 and a rear seat display screen 106), an optical disk accessing mechanism 108, and at least one external receiving source. (For example, the television tuner 110, the GPS reC ei ver 112, and the memory card (such as the SD card) 114, etc.) In this embodiment, the in-vehicle multimedia playback control chip 102 includes at least the optical disc drive control circuit 122, the signal. Input interface 124, processing circuit 126, and drive circuit 128 optical drive control circuit 122 may include circuitry (e.g., servo control circuitry) required to control optical disc access mechanism 108 and processing from optical discs (e.g., Blu-ray Disc (Blu-ray Disc, a circuit for storing information (for example, a decoding circuit) read by a BD) or a digital versatile disc (DVD). In other words, the optical disc drive control circuit 122 is for controlling the operation of the optical disc drive and processing the optical disc. The stored stored information (eg, video content) is used to generate a first multimedia input signal S1. Please note that the optical disc access mechanism 108 includes any component that reads the stored information recorded on the optical disc. For example, the optical disc access mechanism 108 may include an optical pick-up unit (OPU), optical optical reading and writing. The sled of the head, the sled motor that controls the movement of the trolley, the focusing and tracking actuators that control the optical head, and the spindle motor that drives the rotation of the disc (spindle) The signal input interface 124 can be used to receive information output by other sources than the optical disc (such as the content of the television program output by the television tuner 110, the positioning information provided by the global positioning system receiver 112, or the memory card 114). The stored data), and accordingly generates a second multimedia input signal S2. The processing circuit 126 is coupled to the optical drive control circuit 122 and the signal input interface 124, and receives the first multimedia output signal S1 and the second multimedia input. At least one of the incoming signals S2, the processing circuit 126 generates at least one multimedia output signal accordingly. In the present embodiment, the processing circuit 126 includes a first processing unit 132 and a second processing unit 134, and when the first processing unit 132 Upon receiving the first multimedia input signal S1, the first processing unit 132 generates a first multimedia output signal S3_1 according to the received first multimedia input signal S1. For example, the first processing unit 132 may The first multimedia input signal S1 performs image scaling processing such that the image resolution of the first multimedia output signal S3_1 conforms to the actual playback requirement. Please note that if the first multimedia input signal S1 The image processing resolution originally meets the actual playback requirement. When the first processing unit 132 receives the first multimedia input signal S1, the first processing unit 132 can bypass the first multimedia input signal S1. The first multimedia input signal S1 is directly outputted as the first multimedia output signal S3_1. However, this is only an example and is not a limitation of the present invention. The processing unit 132 may have other according to the actual needs of signal processing capabilities (e.g., PIP (Picture-In-Picture, PIP) processing capability). For the second processing unit 134, when receiving the second multimedia input signal S2, the second processing unit 134 generates the second multimedia output signal S3_2 according to the received second multimedia input signal S2. For example, the second processing unit 134 decodes the second multimedia input signal S2 (if the second multimedia input signal S2 delivers the encoded processed information) and/or the image scaling process (if the first The image resolution of the second multimedia input signal S2 does not meet the actual playback requirements. However, this is only an example and is not a limitation of the present invention. That is, the second processing unit 134 may also have other signals according to actual needs. Processing power (such as the processing power of picture-in-picture).
驱动电路 128耦接于处理电路 126， 用以依据处理电路 126所输出的至少一多媒体 输出信号 (例如 S3_l 及 /或 S3_2)来驱动至少一车载多媒体播放装置 (例如前座显示屏幕 104及 /或后座显示屏幕 106)。 于本实施例中， 驱动电路 128包括第一开关单元 136、 第 二开关单元 138、 第一播放单元 140 以及第二播放单元 142。 如图所示， 第一开关单元 136具有第一输入端 Nll、 第二输入端 N12以及输出端 N13， 而第一输入端 Ni l与第二 输入端 N12分别耦接于第一处理单元 132与第二处理单元 134， 因此， 第一开关单元 136的输出端 N13可以选择性地输出第一多媒体输出信号 S3_l 或第二多媒体输出信号 S3_2; 同样地， 第二开关单元 138具有第一输入端 N21、 第二输入端 N22 以及输出端 N23, 而第一输入端 N21与第二输入端 N22分别耦接于第一处理单元 132与第二处理单 元 134， 因此， 第二开关单元 138的输出端 N23便可以选择性地输出第一多媒体输出信 号 S3_l或第二多媒体输出信号 S3_2。 第一播放单元 140耦接于第一开关单元 136的输 出端 N13， 用以依据第一开关单元 136的输出， 来驱动第一车载多媒体播放装置 (例如前 座显示屏幕 104)， 此外， 第二播放单元 142耦接于第二开关单元 138的输出端 N23， 用 以依据第二开关单元 138 的输出， 来驱动第二车载多媒体播放装置 (例如后座显示屏幕 106 )。 The driving circuit 128 is coupled to the processing circuit 126 for driving at least one in-vehicle multimedia playback device (eg, the front seat display screen 104 and/or the rear according to at least one multimedia output signal (eg, S3_1 and/or S3_2) output by the processing circuit 126. The display screen 106). In the embodiment, the driving circuit 128 includes a first switching unit 136, a second switching unit 138, a first playing unit 140, and a second playing unit 142. As shown in the figure, the first switching unit 136 has a first input terminal N11, a second input terminal N12, and an output terminal N13, and the first input terminal Ni1 and the second input terminal N12 are respectively coupled to the first processing unit 132 and The second processing unit 134, therefore, the output terminal N13 of the first switching unit 136 can selectively output the first multimedia output signal S3_1 or the second multimedia output signal S3_2 ; likewise, the second switching unit 138 has the An input terminal N21, a second input terminal N22, and an output terminal N23, and the first input terminal N21 and the second input terminal N22 are respectively coupled to the first processing unit 132 and the second processing unit 134. Therefore, the second switching unit 138 The output terminal N23 can selectively output the first multimedia output signal S3_1 or the second multimedia output signal S3_2. The first playing unit 140 is coupled to the output end N13 of the first switching unit 136 for driving the first in-vehicle multimedia playing device (for example, the front seat display screen 104) according to the output of the first switching unit 136, and further, the second playing. The unit 142 is coupled to the output end N23 of the second switch unit 138. The second in-vehicle multimedia playback device (eg, the rear seat display screen 106) is driven in accordance with the output of the second switch unit 138.
请注意， 除了以上所提及跟本发明技术内容有关的元件之外， 车载多媒体播放控制 芯片 102亦可依据实际上的需求来设置其他元件， 举例来说， 本实施例中的车载多媒体 播放控制芯片 102另包括***总线 (system bus)121 以及微处理器 (microprocessor)123， 而 微处理器 123可通过***总线 121来控制车载多媒体播放控制芯片 102的整体运作， 举例 来说， 微处理器 123可控制第一处理单元 132旁通所接收的第一多媒体输入信号 S l。 此 夕卜， 车载多媒体播放*** 100另可设置一个外接于车载多媒体播放控制芯片 102的储存 元件 （例如存储器 116) ， 因此， 第一处理单元 132与第二处理单元 134可利用芯片外 部的存储器 116来暂存所要处理的数据以及信号处理 /数据运算过程中所产生的结果。  Please note that in addition to the above-mentioned components related to the technical content of the present invention, the in-vehicle multimedia playback control chip 102 can also set other components according to actual requirements. For example, the in-vehicle multimedia playback control in this embodiment The chip 102 further includes a system bus 121 and a microprocessor 123. The microprocessor 123 can control the overall operation of the in-vehicle multimedia playback control chip 102 through the system bus 121. For example, the microprocessor 123 The first processing unit 132 can be controlled to bypass the received first multimedia input signal S1. In addition, the in-vehicle multimedia playing system 100 may further provide a storage component (for example, the memory 116) externally connected to the in-vehicle multimedia playback control chip 102. Therefore, the first processing unit 132 and the second processing unit 134 may utilize the memory 116 external to the chip. To temporarily store the data to be processed and the results produced during the signal processing/data operation.
请注意， 图 1 中仅显示出车载多媒体播放控制芯片 102可用以驱动两个车载多媒体 播放装置 (例如前座显示屏幕 104与后座显示屏幕 106)， 然而， 本发明并不以此为限， 举 例来说， 在不违背本发明精神之下， 车载多媒体播放控制芯片 102亦可用以驱动两个以 上的车载多媒体播放装置 （此时， 处理电路 126会设置两个以上的处理单元， 以及驱动 电路 128会设置两个以上的开关单元以及两个以上的播放单元） 。  Please note that only the in-vehicle multimedia playback control chip 102 can be used to drive two in-vehicle multimedia playback devices (such as the front seat display screen 104 and the rear seat display screen 106). However, the present invention is not limited thereto. In other words, the in-vehicle multimedia playback control chip 102 can also be used to drive more than two in-vehicle multimedia playback devices (in this case, the processing circuit 126 will provide more than two processing units, and the driving circuit 128). More than two switch units and more than two play units will be set.
为了使本发明的技术特点更加明确， 以下分别以不同的操作范例来说明车载多媒体 播放控制芯片 102的运作。  In order to clarify the technical features of the present invention, the operation of the in-vehicle multimedia playback control chip 102 will be described below with different operational examples.
请一并参阅图 1以及图 2， 图 2为图 1所示的车载多媒体播放控制芯片 102的第一 种操作范例的示意图。 当前座乘客以及后座乘客想要分别通过前座显示屏幕 104 以及后 座显示屏幕 106观看同一光盘中所记录的影片内容时， 则光驱控制电路 122会控制光盘 存取机构 108来读取光盘， 并相对应地输出第一多媒体输入信号 S1 至第一处理单元 132， 接着， 第一处理单元 132会依据第一多媒体输入信号 S 1来产生第一多媒体输出信 号 S3_l。 于此操作范例中， 经由适当的控制 （例如微处理器 123可依据目前的用户设定 来控制第一开关单元 136与第二开关单元 138 ) ， 第一开关单元 136会连接第一输入端 Ni l与输出端 N13， 以及第二开关单元 138会连接第一输入端 N21与输出端 N23， 如此 一来， 第一开关单元 136与第二开关单元 138的输出端 N13、 N23皆会输出第一多媒体 输出信号 S3_l。 由于第一播放单元 140以及第二播放单元 142均依据同一信号输入 （亦 即第一多媒体输出信号 S3_l ) 来分别驱动前座显示屏幕 104以及后座显示屏幕 106， 因 此， 前座乘客以及后座乘客便可通过前座显示屏幕 104以及后座显示屏幕 106观看同一 光盘中所记录的影片内容。 请一并参阅图 1以及图 3， 图 3为图 1所示车载多媒体播放控制芯片 102的第二种 操作范例的示意图。 当前座乘客以及后座乘客均想分别通过前座显示屏幕 104 以及后座 显示屏幕 106观看光盘以外的同一外接讯源的输出内容 （例如同一电视节目） 时， 则信 号输入接口 124会接收并输出第二多媒体输入信号 S2(例如电视调谐器 110所输出的电视 信号)至第二处理单元 134， 接着， 第二处理单元 134会依据第二多媒体输入信号 S2来 产生第二多媒体输出信号 S3_2。 于此操作范例中， 经由适当的控制 （例如微处理器 123 可依据目前的用户设定来控制第一开关单元 136与第二开关单元 138 ) ， 第一开关单元 136会连接第二输入端 N12与输出端 N13， 以及第二开关单元 138会连接第二输入端 N22与输出端 N23， 如此一来， 第一开关单元 136与第二开关单元 138的输出端 N13、 N23皆会输出第二多媒体输出信号 S3_2。 由于第一播放单元 140以及第二播放单元 142 均依据同一输入信号 （亦即第二多媒体输出信号 S3_2) 来分别驱动前座显示屏幕 104以 及后座显示屏幕 106， 因此， 前座乘客以及后座乘客便可通过前座显示屏幕 104 以及后 座显示屏幕 106观看同一外接信号所提供的视频内容。 Please refer to FIG. 1 and FIG. 2 together. FIG. 2 is a schematic diagram of a first operation example of the in-vehicle multimedia playback control chip 102 shown in FIG. When the front seat passenger and the rear seat passenger want to view the movie content recorded on the same optical disc through the front seat display screen 104 and the rear seat display screen 106, respectively, the optical disc drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and Correspondingly, the first multimedia input signal S1 is outputted to the first processing unit 132. Then, the first processing unit 132 generates the first multimedia output signal S3_1 according to the first multimedia input signal S1. In this example of operation, the first switching unit 136 and the second switching unit 138 may be controlled according to current user settings via appropriate control (the first switching unit 136 is connected to the first input terminal Ni). l and the output terminal N13, and the second switch unit 138 are connected to the first input terminal N21 and the output terminal N23, such that the output terminals N13, N23 of the first switch unit 136 and the second switch unit 138 will output the first Multimedia output signal S3_l. Since the first playback unit 140 and the second playback unit 142 respectively drive the front seat display screen 104 and the rear seat display screen 106 according to the same signal input (ie, the first multimedia output signal S3_1), the front seat passenger and the rear seat The passenger can view the video content recorded on the same disc through the front seat display screen 104 and the rear seat display screen 106. Please refer to FIG. 1 and FIG. 3 together. FIG. 3 is a schematic diagram of a second operation example of the in-vehicle multimedia playback control chip 102 shown in FIG. When both the front seat passenger and the rear seat passenger want to view the output content (for example, the same television program) of the same external source other than the optical disc through the front seat display screen 104 and the rear seat display screen 106, the signal input interface 124 receives and outputs the first Two multimedia input signals S2 (such as television signals output by the television tuner 110) to the second processing unit 134, and then, the second processing unit 134 generates the second multimedia according to the second multimedia input signal S2. The signal S3_2 is output. In this example of operation, the first switch unit 136 and the second switch unit 138 can be controlled according to current user settings via appropriate control (1, the first switch unit 136 is connected to the second input terminal N12). The second input terminal N22 and the output terminal N23 are connected to the output terminal N13, and the second switch unit 138, so that the output terminals N13 and N23 of the first switch unit 136 and the second switch unit 138 output the second most The media outputs a signal S3_2. Since the first playback unit 140 and the second playback unit 142 respectively drive the front seat display screen 104 and the rear seat display screen 106 according to the same input signal (ie, the second multimedia output signal S3_2), the front seat passenger and the rear seat The passenger can view the video content provided by the same external signal through the front seat display screen 104 and the rear seat display screen 106.
请一并参阅图 1以及图 4， 图 4为图 1所示车载多媒体播放控制芯片 102的第三种 操作范例的示意图。 当前座乘客想通过前座显示屏幕 104观看光盘中所记录的影片内 容， 以及后座乘客想通过后座显示屏幕 106观看光盘以外的外接讯源的输出内容 （例如 电视节目） 时， 则光驱控制电路 122会控制光盘存取机构 108来读取光盘， 并相对应地 输出第一多媒体输入信号 S1至第一处理单元 132， 以及信号输入接口 124会接收并输出 第二多媒体输入信号 S2(例如电视调谐器 110所输出的电视信号)至第二处理单元 134， 接着， 第一处理单元 132会依据第一多媒体输入信号 S1 来产生第一多媒体输出信号 S3_l 以及第二处理单元 134会依据第二多媒体输入信号 S2来产生第二多媒体输出信号 S3_2。 于此操作范例中， 经由适当的控制 （例如微处理器 123可依据目前的用户设定来 控制第一开关单元 136与第二开关单元 138 ) ， 第一开关单元 136会连接第一输入端 Ni l与输出端 N13， 以及第二开关单元 138会连接第二输入端 N22与输出端 N23， 如此 一来， 第一开关单元 136的输出端 N13会输出第一多媒体输出信号 S3_l， 而第二开关单 元 138的输出端 N23则会输出第二多媒体输出信号 S3_2。 由于第一播放单元 140以及第 二播放单元 142分别接收到第一多媒体输出信号 S3_l 以及第二多媒体输出信号 S3_2， 因此， 前座乘客便可通过前座显示屏幕 104观看光盘中所记录的影片内容， 以及后座乘 客可通过后座显示屏幕 106观看外接讯源所提供的视频内容。  Please refer to FIG. 1 and FIG. 4 together. FIG. 4 is a schematic diagram of a third operation example of the in-vehicle multimedia playback control chip 102 shown in FIG. When the current seat passenger wants to view the video content recorded on the optical disk through the front seat display screen 104, and the rear seat passenger wants to view the output content (for example, a television program) of the external communication source other than the optical disk through the rear seat display screen 106, the optical drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the first multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs the second multimedia input signal S2. (for example, the television signal output by the television tuner 110) to the second processing unit 134, then, the first processing unit 132 generates the first multimedia output signal S3_1 and the second processing according to the first multimedia input signal S1. The unit 134 generates the second multimedia output signal S3_2 according to the second multimedia input signal S2. In this example of operation, the first switching unit 136 and the second switching unit 138 may be controlled according to current user settings via appropriate control (the first switching unit 136 is connected to the first input terminal Ni). l and the output terminal N13, and the second switch unit 138 is connected to the second input terminal N22 and the output terminal N23, such that the output terminal N13 of the first switch unit 136 outputs the first multimedia output signal S3_l, and The output terminal N23 of the second switching unit 138 outputs a second multimedia output signal S3_2. Since the first playing unit 140 and the second playing unit 142 respectively receive the first multimedia output signal S3_1 and the second multimedia output signal S3_2, the front seat passenger can view the recorded in the optical disc through the front seat display screen 104. The video content, as well as the rear seat passengers, can view the video content provided by the external source through the rear seat display screen 106.
请一并参阅图 1以及图 5， 图 5为图 1所示车载多媒体播放控制芯片 102的第四种 操作范例的示意图。 当后座乘客想通过后座显示屏幕 106观看光盘中所记录的影片内 容， 以及前座乘客想通过前座显示屏幕 104观看光盘以外的外接讯源的输出内容 （例如 电视节目） 时， 则光驱控制电路 122会控制光盘存取机构 108来读取光盘， 并相对应地 输出第一多媒体输入信号 S1至第一处理单元 132， 以及信号输入接口 124会接收并输出 第二多媒体输入信号 S2(例如电视调谐器 110所输出的电视信号)至第二处理单元 134， 接着， 第一处理单元 132会依据第一多媒体输入信号 S1 来产生第一多媒体输出信号 S3_l 以及第二处理单元 134会依据第二多媒体输入信号 S2来产生第二多媒体输出信号 S3_2。 于此操作范例中， 经由适当的控制 （例如微处理器 123可依据目前的用户设定来 控制第一开关单元 136与第二开关单元 138 ) ， 第一开关单元 136会连接第二输入端 N12与输出端 N13， 以及第二开关单元 138会连接第一输入端 N21与输出端 N23， 如此 一来， 第一开关单元 136的输出端 N13会输出第二多媒体输出信号 S3_2， 而第二开关单 元 138的输出端 N23则会输出第一多媒体输出信号 S3_l。 由于第一播放单元 140以及第 二播放单元 142分别接收到第二多媒体输出信号 S3_2以及第一多媒体输出信号 S3_l， 因此， 后座乘客可通过后座显示屏幕 106观看光盘中所记录的影片内容， 以及前座乘客 便可通过前座显示屏幕 104观看外接讯源所提供的视频内容。 Please refer to FIG. 1 and FIG. 5 together. FIG. 5 is a fourth type of the vehicle multimedia playback control chip 102 shown in FIG. Schematic diagram of the operation example. When the rear seat passenger wants to view the video content recorded on the optical disc through the rear seat display screen 106, and the front seat passenger wants to view the output content (for example, a television program) of the external communication source other than the optical disk through the front seat display screen 104, the optical drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the first multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs the second multimedia input signal S2. (for example, the television signal output by the television tuner 110) to the second processing unit 134, then, the first processing unit 132 generates the first multimedia output signal S3_1 and the second processing according to the first multimedia input signal S1. The unit 134 generates the second multimedia output signal S3_2 according to the second multimedia input signal S2. In this example of operation, the first switch unit 136 and the second switch unit 138 can be controlled according to the current user settings via appropriate control. The first switch unit 136 is connected to the second input terminal N12. The first input terminal N21 and the output terminal N23 are connected to the output terminal N13, and the second switch unit 138. Thus, the output terminal N13 of the first switch unit 136 outputs the second multimedia output signal S3_2, and the second The output terminal N23 of the switching unit 138 outputs a first multimedia output signal S3_1. Since the first playing unit 140 and the second playing unit 142 respectively receive the second multimedia output signal S3_2 and the first multimedia output signal S3_1, the rear seat passenger can watch the recorded in the optical disc through the rear seat display screen 106. The video content, as well as the front seat passengers, can view the video content provided by the external source through the front seat display screen 104.
如前所示， 车载多媒体播放控制芯片 102中的处理电路 126(例如视频处理电路)亦可 支持画中画的处理， 简单来说， 当处理电路 126同时接收到第一多媒体输入信号 S1与第 二多媒体输入信号 S2， 则处理电路 126会针对所接收的第一多媒体输出信号 S1及第二 多媒体输入信号 S2执行画中画处理， 来产生至少一多媒体输出信号 （例如 S3_l 及 /或 S3—2) 。  As shown in the foregoing, the processing circuit 126 (for example, a video processing circuit) in the in-vehicle multimedia playback control chip 102 can also support the picture-in-picture processing. In brief, when the processing circuit 126 receives the first multimedia input signal S1 at the same time. And the second multimedia input signal S2, the processing circuit 126 performs a picture-in-picture process on the received first multimedia output signal S1 and the second multimedia input signal S2 to generate at least one multimedia output signal ( For example, S3_l and / or S3-2).
请一并参阅图 1以及图 6， 图 6为图 1所示车载多媒体播放控制芯片 102的第五种 操作范例的示意图。 当前座乘客除了想通过前座显示屏幕 104 的主要画面 (；母画面)中观 看光盘中所记录的影片内容以外， 另想要由前座显示屏幕 104 的次要画面 (子画面)中观 看光盘以外的外接讯源的输出内容 （例如电视节目） ， 以及后座乘客除了想通过后座显 示屏幕 106 的主要画面 (母画面)中观看光盘以外的外接讯源的输出内容 （例如电视节 目） 以外， 另想要由后座显示屏幕 106 的次要画面 (子画面)中观看光盘中所记录的影片 内容时， 则光驱控制电路 122会控制光盘存取机构 108来读取光盘， 并相对应地输出第 一多媒体输入信号 S1至第一处理单元 132， 以及信号输入接口 124会接收并输出第二多 媒体输入信号 S2(例如电视调谐器 110所输出的电视信号) S2至第二处理单元 134。 如图 1所示， 第一处理单元 132与第二处理单元 134均耦接于***总线 121， 因此， 第一处理 单元 132另可通过***总线 121将所接收的第一多媒体输入信号 S1传送至第二处理单元 134, 同样地， 第二处理单元 132另可通过***总线 121将所接收的第二多媒体输入信号 S2传送至第一处理单元 132， 接着， 第一处理单元 132会针对第一多媒体输入信号 S1以 及第二多媒体输入信号 S2进行画中画处理， 使得第一多媒体输入信号 S1的原本影像画 面中的一部分区域被第二多媒体输入信号 S2的缩小后的影像画面所覆盖， 此外， 第二处 理单元 134亦会针对第一多媒体输入信号 S1以及第二多媒体输入信号 S2进行画中画处 理， 使得第二多媒体输入信号 S2的原本影像画面中的一部分区域被第一多媒体输入信号 S1 的缩小后的影像画面所覆盖。 于此操作范例中， 经由适当的控制 （例如微处理器 123 可依据目前的用户设定来控制第一开关单元 136与第二开关单元 138 ) ， 第一开关单元 136会连接第一输入端 Ni l 与输出端 N13， 以及第二开关单元 138会连接第二输入端 N22与输出端 N23， 如此一来， 第一开关单元 136的输出端 N13会输出第一处理单元 132通过画中画处理所产生的第一多媒体输出信号 S3_l， 而第二开关单元 138的输出端 N23则会输出第二处理单元 134通过画中画处理所产生的第二多媒体输出信号 S3_2。 由 于第一播放单元 140以及第二播放单元 142分别接收到第一多媒体输出信号 S3_l以及第 二多媒体输出信号 S3_2， 因此， 前座乘客便可通过前座显示屏幕 104观看画中画的播放 (其中母画面显示光盘中所记录的影片内容， 而子画面则显示外接讯源所提供的视频内 容） ， 以及后座乘客可通过后座显示屏幕 106观看画中画的播放 （其中母画面显示外接 讯源所提供的视频内容， 而子画面则显示光盘中所记录的影片内容） 。 Please refer to FIG. 1 and FIG. 6. FIG. 6 is a schematic diagram of a fifth operation example of the in-vehicle multimedia playback control chip 102 shown in FIG. The current seat passenger wants to watch the video content recorded on the optical disc through the main screen (the mother screen) of the front seat display screen 104, and also wants to watch the video other than the optical disc in the secondary screen (sub screen) of the front seat display screen 104. The output content of the external source (for example, a television program), and the rear seat passenger, in addition to the output of the external source (such as a television program) other than the optical disc in the main screen (mother screen) of the rear seat display screen 106, When the movie content recorded on the optical disc is to be viewed from the secondary screen (sub-picture) of the rear seat display screen 106, the optical disc drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the video. A multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs a second multimedia input signal S2 (eg, a television signal output by the television tuner 110) S2 to the second processing unit 134. . As shown in FIG. 1 , the first processing unit 132 and the second processing unit 134 are both coupled to the system bus 121 , and therefore, the first processing The unit 132 can further transmit the received first multimedia input signal S1 to the second processing unit 134 through the system bus 121. Similarly, the second processing unit 132 can further receive the received second multimedia through the system bus 121. The body input signal S2 is transmitted to the first processing unit 132, and then the first processing unit 132 performs a picture-in-picture process for the first multimedia input signal S1 and the second multimedia input signal S2, so that the first multimedia A portion of the original image frame of the input signal S1 is covered by the reduced image frame of the second multimedia input signal S2, and the second processing unit 134 also targets the first multimedia input signal S1 and the second The multimedia input signal S2 performs a picture-in-picture process such that a portion of the original image frame of the second multimedia input signal S2 is covered by the reduced image frame of the first multimedia input signal S1. In this example of operation, the first switching unit 136 and the second switching unit 138 can be controlled according to the current user settings via appropriate control (the microprocessor 123 is connected to the first input terminal Ni). l and the output terminal N13, and the second switch unit 138 are connected to the second input terminal N22 and the output terminal N23, such that the output terminal N13 of the first switch unit 136 outputs the first processing unit 132 through the picture-in-picture processing The first multimedia output signal S3_1 is generated, and the output terminal N23 of the second switching unit 138 outputs the second multimedia output signal S3_2 generated by the second processing unit 134 through the picture-in-picture processing. Since the first playback unit 140 and the second playback unit 142 respectively receive the first multimedia output signal S3_1 and the second multimedia output signal S3_2, the front seat passenger can watch the picture-in-picture playback through the front seat display screen 104. (where the mother screen displays the video content recorded on the disc, and the sub screen displays the video content provided by the external source), and the rear seat passenger can watch the picture-in-picture playback through the rear seat display screen 106 (where the mother screen is displayed) The video content provided by the external source, and the sub-picture shows the content of the video recorded on the disc).
请一并参阅图 1以及图 7， 图 7为图 1所示的车载多媒体播放控制芯片 102的第六 种操作范例的示意图。 当后座乘客除了想通过后座显示屏幕 106 的主要画面 (；母画面)中 观看光盘中所记录的影片内容以外， 另想要由后座显示屏幕 106 的次要画面 (子画面)中 观看光盘以外的外接讯源的输出内容 （例如电视节目） ， 以及前座乘客除了想通过前座 显示屏幕 104 的主要画面 (母画面)中观看光盘以外的外接讯源的输出内容 （例如电视节 目） 以外， 另想要由前座显示屏幕 104 的次要画面 (子画面)中观看光盘中所记录的影片 内容时， 则光驱控制电路 122会控制光盘存取机构 108来读取光盘， 并相对应地输出第 一多媒体输入信号 S1至第一处理单元 132， 以及信号输入接口 124会接收并输出第二多 媒体输入信号 S2(例如电视调谐器 110所输出的电视信号)至第二处理单元 134。 如前所 述， 第一处理单元 132另可通过***总线 121将所接收的第一多媒体输入信号 S1传送至 第二处理单元 134， 以及第二处理单元 132另可通过***总线 121将所接收的第二多媒 体输入信号 S2传送至第一处理单元 132， 接着， 第一处理单元 132会针对第一多媒体输 入信号 SI 以及第二多媒体输入信号 S2进行画中画处理， 使得第一多媒体输入信号 S1 的原本影像画面中的一部分区域被第二多媒体输入信号 S2的缩小后的影像画面所覆盖， 此外， 第二处理单元 134亦会针对第一多媒体输入信号 S1 以及第二多媒体输入信号 S2 进行画中画处理， 使得第二多媒体输入信号 S2的原本影像画面中的一部分区域被第一多 媒体输入信号 S1的缩小后的影像画面所覆盖。 于此操作范例中， 经由适当的控制 （例如 微处理器 123可依据目前的用户设定来控制第一开关单元 136与第二开关单元 138 ) ， 第一开关单元 136会连接第二输入端 N12与输出端 N13， 以及第二开关单元 138会连接 第一输入端 N21与输出端 N23， 如此一来， 第一开关单元 136的输出端 N13会输出第二 处理单元 134通过画中画处理所产生的第二多媒体输出信号 S3_2， 而第二开关单元 138 的输出端 N23则会输出第一处理单元 132通过画中画处理所产生的第一多媒体输出信号 S3_l。 由于第一播放单元 140 以及第二播放单元 142分别接收到第二多媒体输出信号 S3_2 以及第一多媒体输出信号 S3_l， 因此， 后座乘客便可通过后座显示屏幕 106观看 画中画的播放 （其中母画面显示光盘中所记录的影片内容， 而子画面则显示外接讯源所 提供的视频内容） ， 以及前座乘客可通过前座显示屏幕 104观看画中画的播放 （其中母 画面显示外接讯源所提供的视频内容， 而子画面则显示光盘中所记录的影片内容） 。 Please refer to FIG. 1 and FIG. 7. FIG. 7 is a schematic diagram of a sixth operation example of the in-vehicle multimedia playback control chip 102 shown in FIG. When the rear seat passenger wants to view the movie content recorded in the optical disc through the main screen (; mother screen) of the rear seat display screen 106, it is also desired to be viewed from the secondary screen (sub-screen) of the rear seat display screen 106. The output content of the external source other than the optical disc (for example, a television program), and the front seat passenger, in addition to the output content (for example, a television program) of the external source other than the optical disc in the main screen (mother screen) of the front seat display screen 104, When it is desired to view the video content recorded on the optical disc from the secondary screen (sub-picture) of the front display screen 104, the optical disc drive control circuit 122 controls the optical disc access mechanism 108 to read the optical disc, and correspondingly outputs the video. A multimedia input signal S1 to the first processing unit 132, and the signal input interface 124 receives and outputs a second multimedia input signal S2 (eg, a television signal output by the television tuner 110) to the second processing unit 134. As described above, the first processing unit 132 can further transmit the received first multimedia input signal S1 to the second processing unit 134 through the system bus 121, and the second processing unit 132 can also use the system bus 121 to The received second multimedia input signal S2 is transmitted to the first processing unit 132, and then, the first processing unit 132 inputs the first multimedia. The input signal SI and the second multimedia input signal S2 perform picture-in-picture processing, so that a part of the original image frame of the first multimedia input signal S1 is reduced by the second multimedia input signal S2. In addition, the second processing unit 134 also performs a picture-in-picture process for the first multimedia input signal S1 and the second multimedia input signal S2, so that the second multimedia input signal S2 is in the original image frame. A portion of the area is covered by the reduced image frame of the first multimedia input signal S1. In this example of operation, the first switch unit 136 and the second switch unit 138 can be controlled according to the current user settings via appropriate control. The first switch unit 136 is connected to the second input terminal N12. The first input terminal N21 and the output terminal N23 are connected to the output terminal N13, and the second switch unit 138, so that the output terminal N13 of the first switch unit 136 outputs the second processing unit 134 to generate the process by the picture-in-picture process. The second multimedia output signal S3_2, and the output terminal N23 of the second switching unit 138 outputs the first multimedia output signal S3_1 generated by the first processing unit 132 through the picture-in-picture processing. Since the first playback unit 140 and the second playback unit 142 respectively receive the second multimedia output signal S3_2 and the first multimedia output signal S3_1, the rear seat passenger can view the picture-in-picture through the rear seat display screen 106. Playback (where the mother screen displays the video content recorded on the disc, and the sub screen displays the video content provided by the external source), and the front seat passenger can watch the picture-in-picture playback through the front seat display screen 104 (where the mother screen is displayed) The video content provided by the external source, and the sub-picture shows the content of the video recorded on the disc).
于图 6与图 7所示的操作范例中， 前座显示屏幕 104与后座显示屏幕 106均会同时显 示画中画的输出， 然而， 此非本发明的限制， 亦即， 只要车载多媒体播放控制芯片 102 驱动前座显示屏幕 104与后座显示屏幕 106的其中之一来显示画中画的输出亦符合本发 明的精神， 如图 8〜图 11所示， 图 8〜图 11分别为图 1所示的车载多媒体播放控制芯片 102 的第七种操作范例〜第十种操作范例的示意图。 由于所属领域的技术人员可轻易地 依据上述段落而轻易地了解图 8〜图 11中各个操作范例的运作， 故于此便不另赘述。  In the operation examples shown in FIG. 6 and FIG. 7, both the front seat display screen 104 and the rear seat display screen 106 simultaneously display the output of the picture-in-picture, however, this is not a limitation of the present invention, that is, as long as the vehicle multimedia playback control The chip 102 driving one of the front seat display screen 104 and the rear seat display screen 106 to display the output of the picture-in-picture is also in accordance with the spirit of the present invention, as shown in FIG. 8 to FIG. 11 , and FIG. 8 to FIG. A seventh operational example of the illustrated vehicle multimedia playback control chip 102 - a schematic diagram of a tenth operational example. Since the operation of each of the operation examples in FIGS. 8 to 11 can be easily understood by those skilled in the art based on the above paragraphs, no further details are provided herein.
于上述的操作范例中， 车载多媒体播放控制芯片 102会同时驱动多个车载多媒体播 放装置 (例如前座显示屏幕 104以及后座显示屏幕 106)， 然而， 此仅作为范例说明， 并非 本发明的限制， 举例来说， 当仅有前座乘客需要观看前座显示屏幕 104所播放的视频内 容或仅有后座乘客需要观看后座显示屏幕 106所播放的视频内容时， 车载多媒体播放控 制芯片 102仅需驱动前座显示屏幕 104与后座显示屏幕 106两者的其中之一， 例如， 对应 前座显示屏幕 104的第一处理电路 132、 第一开关单元 136及第一播放单元 140中至少其 一会被关闭 (disabled), 或者对应后座显示屏幕 106的第二处理电路 134、 第二开关单元 138及第二播放单元 142中至少其一会被关闭 (disabled), 如此一来， 仅会有一个显示屏幕 (前座显示屏幕 104或后座显示屏幕 106) 会被驱动， 然而， 上述仅作为范例说明， 其 它可控制前座显示屏幕 104与后座显示屏幕 106是否会被驱动的方式亦是可行的。 In the above operation example, the in-vehicle multimedia playback control chip 102 simultaneously drives a plurality of in-vehicle multimedia playback devices (for example, the front seat display screen 104 and the rear seat display screen 106). However, this is merely an example and is not a limitation of the present invention. For example, when only the front seat passenger needs to view the video content played by the front seat display screen 104 or only the rear seat passenger needs to view the video content played by the rear seat display screen 106, the in-vehicle multimedia playback control chip 102 only needs to drive the front seat. One of the display screen 104 and the rear seat display screen 106, for example, at least one of the first processing circuit 132, the first switching unit 136, and the first playback unit 140 corresponding to the front seat display screen 104 is disabled (disabled Or at least one of the second processing circuit 134, the second switching unit 138, and the second playback unit 142 corresponding to the rear seat display screen 106 is disabled, so that only one display screen (front seat) The display screen 104 or the rear seat display screen 106) will be driven, however, the above is merely illustrative, and It is also possible to control whether the front seat display screen 104 and the rear seat display screen 106 are to be driven.
另外， 上述的实施方式中均以视频播放来说明 (亦即处理电路 126为视频处理电路， 驱动电路 128为视频驱动电路， 第一、 第二处理单元 132、 134均为视频处理单元， 以及 第一、 第二播放单元 140、 142均为视频播放单元)， 然而， 本发明所揭露的车载多媒体 播放控制芯片 102并不局限于此应用， 亦即， 在不违背本发明精神之下， 车载多媒体播 放控制芯片 102亦可应用于音频播放， 因此， 第一播放单元 140以及第二播放单元 142 所驱动的车载多媒体播放装置是音频播放装置 （例如喇叭） ， 故通过第一开关单元 140 与第二开关单元 138 的适当控制， 不同的音频播放装置可播放相同音频内容或不同音频 内容， 此一设计上的变化亦符合本发明的精神而落入本发明的范畴。  In addition, in the foregoing embodiments, video playback is used (that is, the processing circuit 126 is a video processing circuit, the driving circuit 128 is a video driving circuit, and the first and second processing units 132 and 134 are video processing units, and The second playback unit 140, 142 is a video playback unit. However, the in-vehicle multimedia playback control chip 102 disclosed in the present invention is not limited to this application, that is, without in violation of the spirit of the present invention, the vehicle multimedia The playback control chip 102 can also be applied to audio playback. Therefore, the in-vehicle multimedia playback device driven by the first playback unit 140 and the second playback unit 142 is an audio playback device (eg, a speaker), so that the first switch unit 140 and the second switch unit are used. With appropriate control of the switch unit 138, different audio playback devices can play the same audio content or different audio content, and this design change is also within the scope of the present invention in accordance with the spirit of the present invention.
再者， 上述 "车载 (in-vehicle) " —词并非用来限定本发明所揭露的芯片架构仅能应 用于汽车领域， 亦即， 其它采用本发明芯片架构来实现多媒体播放控制芯片的交通工具 亦可视为使用了本发明所揭露的车载多媒体播放控制芯片。  Furthermore, the above-mentioned "in-vehicle" is not intended to limit the chip architecture disclosed in the present invention, and can be applied only to the automotive field, that is, other vehicles that implement the multimedia playback control chip using the chip architecture of the present invention. It can also be considered that the in-vehicle multimedia playback control chip disclosed in the present invention is used.
依据上述内容， 本发明驱动车载多媒体播放装置的方法可简要归纳如下： 设置车载 多媒体播放控制芯片， 其中光驱控制电路以及信号输入接口均整合于该车载多媒体播放 控制芯片中， 该光驱控制电路用以控制光驱伺服运作并处理自光盘所读取的储存信息来 产生第一多媒体输入信号， 以及该信号输入接口用以接收第二多媒体输入信号； 以及当 接收到该第一多媒体输出信号以及该第二多媒体输入信号中至少其一时， 使用该车载多 媒体播放控制芯片来据此产生至少一多媒体输出信号， 并依据该至少一多媒体输出信号 来驱动至少一车载多媒体播放装置。 此外， 本发明驱动车载多媒体播放装置的方法亦可 支持画中画的处理， 因此， 于同时接收到该第一多媒体输入信号与该第二多媒体输入信 号时， 会针对所接收的该第一多媒体输出信号及该第二多媒体输入信号执行画中画处理 来产生该至少一多媒体输出信号。  According to the above content, the method for driving the vehicle multimedia playing device of the present invention can be summarized as follows: The vehicle multimedia playing control chip is set, wherein the optical drive control circuit and the signal input interface are integrated in the vehicle multimedia playing control chip, and the optical drive control circuit is used for Controlling the optical disk drive operation and processing the stored information read from the optical disk to generate a first multimedia input signal, and the signal input interface is configured to receive the second multimedia input signal; and when the first multimedia is received The at least one of the output signal and the second multimedia input signal is used to generate at least one multimedia output signal according to the at least one multimedia output signal, and to drive at least one in-vehicle multimedia playback device according to the at least one multimedia output signal. In addition, the method for driving the in-vehicle multimedia playing device of the present invention can also support the processing of the picture-in-picture. Therefore, when the first multimedia input signal and the second multimedia input signal are simultaneously received, the received The first multimedia output signal and the second multimedia input signal perform a picture-in-picture process to generate the at least one multimedia output signal.
综上所述， 本发明是将光驱控制电路整合于车载多媒体播放控制芯片中， 由于车载 多媒体播放控制芯片本身亦会具有信号输入接口， 因此， 信号切换便可于同一芯片的内 部完成， 而有效地降低信号的耗损并提升播放质量， 此外， 通过同一芯片的内部的信号 切换， 可轻易地控制多个车载多媒体播放装置 （例如前座显示屏幕及后座显示屏幕） 播 放相同或不同的内容， 因而可增加使用上的弹性， 再者， 通过将光驱控制电路与其它电 路元件整合于单一芯片中， 生产成本亦可大幅降低。  In summary, the invention integrates the optical drive control circuit into the vehicle multimedia playback control chip. Since the vehicle multimedia playback control chip itself also has a signal input interface, the signal switching can be completed inside the same chip, and is effective. Reduce the loss of signal and improve the playback quality. In addition, through the internal signal switching of the same chip, it is easy to control multiple car multimedia playback devices (such as front seat display screen and rear seat display screen) to play the same or different content. The flexibility of use can be increased. Furthermore, by integrating the optical drive control circuit with other circuit components in a single chip, the production cost can be greatly reduced.
以上所述仅为本发明的较佳实施例， 凡依本发明权利要求所做的等同更动或润饰， 皆应属本发明所保护的范围。  The above description is only a preferred embodiment of the present invention, and equivalent modifications or modifications made in accordance with the claims of the present invention are intended to be within the scope of the present invention.

Claims

权利要求书 Claim
1.一种车载多媒体播放控制芯片， 其特征在于， 包括：  An in-vehicle multimedia playback control chip, comprising:
光驱控制电路， 用以控制光驱伺服运作， 并处理自光盘所读取的储存信息来产生第 一多媒体输入信号；  The optical drive control circuit is configured to control the optical drive servo operation, and process the stored information read from the optical disc to generate the first multimedia input signal;
信号输入接口， 用以产生第二多媒体输入信号；  a signal input interface for generating a second multimedia input signal;
处理电路， 耦接于所述光驱控制电路以及所述信号输入接口， 其中当所述处理电路 接收到所述第一多媒体输出信号以及所述第二多媒体输入信号中至少其一时， 所述处理 电路据此产生至少一多媒体输出信号； 以及  a processing circuit, coupled to the optical drive control circuit and the signal input interface, wherein when the processing circuit receives at least one of the first multimedia output signal and the second multimedia input signal, The processing circuit generates at least one multimedia output signal accordingly;
驱动电路， 耦接于所述处理电路， 用以依据所述至少一多媒体输出信号来驱动至少 一车载多媒体播放装置。  The driving circuit is coupled to the processing circuit for driving at least one in-vehicle multimedia playing device according to the at least one multimedia output signal.
2.如权利要求 1所述的车载多媒体播放控制芯片， 其特征在于- 所述处理电路包括：  The in-vehicle multimedia playback control chip according to claim 1, wherein the processing circuit comprises:
第一处理单元， 耦接于所述光驱控制电路， 用以于接收到所述第一多媒体输入 信号时， 依据所接收的所述第一多媒体输入信号来产生第一多媒体输出信号； 以及  a first processing unit, coupled to the optical disc drive control circuit, configured to generate the first multimedia according to the received first multimedia input signal when receiving the first multimedia input signal Output signal;
第二处理单元， 耦接于所述信号输入接口， 用以于接收到所述第二多媒体输入 信号时， 依据所接收的所述第二多媒体输入信号来产生第二多媒体输出信号；  a second processing unit, coupled to the signal input interface, configured to generate the second multimedia according to the received second multimedia input signal when receiving the second multimedia input signal output signal;
所述驱动电路包括：  The driving circuit includes:
第一开关单元， 具有第一输入端、 第二输入端以及输出端， 所述第一开关单元 的所述第一输入端与所述第二输入端分别耦接于所述第一处理单元与所述第二处理单 元， 所述第一开关单元的所述输出端选择性地输出所述第一多媒体输出信号或所述第二 多媒体输出信号；  The first switching unit has a first input end, a second input end, and an output end, and the first input end and the second input end of the first switch unit are respectively coupled to the first processing unit and The second processing unit, the output end of the first switching unit selectively outputs the first multimedia output signal or the second multimedia output signal;
第二开关单元， 具有第一输入端、 第二输入端以及输出端， 所述第二开关单元 的所述第一输入端与所述第二输入端分别耦接于所述第一处理单元与所述第二处理单 元， 所述第二开关单元的所述输出端选择性地输出所述第一多媒体输出信号或所述第二 多媒体输出信号；  a second switching unit having a first input end, a second input end, and an output end, wherein the first input end and the second input end of the second switch unit are respectively coupled to the first processing unit and The second processing unit, the output end of the second switching unit selectively outputs the first multimedia output signal or the second multimedia output signal;
第一播放单元， 耦接于所述第一开关单元的所述输出端， 用以依据所述第一开 关单元的输出， 来驱动第一车载多媒体播放装置； 以及  a first playing unit, coupled to the output end of the first switching unit, for driving the first in-vehicle multimedia playing device according to the output of the first switching unit;
第二播放单元， 耦接于所述第二开关单元的所述输出端， 用以依据所述第二开 关单元的输出， 来驱动第二车载多媒体播放装置。  The second playing unit is coupled to the output end of the second switching unit for driving the second in-vehicle multimedia playing device according to the output of the second switching unit.
3.如权利要求 2所述的车载多媒体播放控制芯片， 其特征在于， 所述第一开关单元 与所述第二开关单元会同时输出所述第一多媒体输出信号。 The vehicle multimedia playback control chip according to claim 2, wherein the first switch unit The first multimedia output signal is simultaneously outputted with the second switching unit.
4.如权利要求 2所述的车载多媒体播放控制芯片， 其特征在于， 所述第一开关单元 与所述第二开关单元会同时输出所述第二多媒体输出信号。  The in-vehicle multimedia playback control chip according to claim 2, wherein the first switching unit and the second switching unit simultaneously output the second multimedia output signal.
5.如权利要求 2所述的车载多媒体播放控制芯片， 其特征在于， 所述第一开关单元 与所述第二开关单元会同时且分别地输出所述第一多媒体输出信号与所述第二多媒体输 出信号之一以及所述第一多媒体输出信号与所述第二多媒体输出信号的另一个。  The in-vehicle multimedia playback control chip according to claim 2, wherein the first switching unit and the second switching unit simultaneously and separately output the first multimedia output signal and the One of the second multimedia output signals and the other of the first multimedia output signal and the second multimedia output signal.
6.如权利要求 2所述的车载多媒体播放控制芯片， 其特征在于， 所述第一处理单元 与所述第二处理单元均为视频处理单元， 所述第一播放单元与所述第二播放单元均为视 频播放单元， 所述第一车载多媒体播放装置为前座显示屏幕， 以及所述第二车载多媒体 播放装置为后座显示屏幕。  The vehicle-mounted multimedia playback control chip according to claim 2, wherein the first processing unit and the second processing unit are both video processing units, the first playback unit and the second playback The units are all video playing units, the first in-vehicle multimedia playing device is a front seat display screen, and the second in-vehicle multimedia playing device is a rear seat display screen.
7.如权利要求 1所述的车载多媒体播放控制芯片， 其特征在于， 所述处理电路为视 频处理电路， 以及所述驱动电路为视频驱动电路。  The in-vehicle multimedia playback control chip according to claim 1, wherein the processing circuit is a video processing circuit, and the driving circuit is a video driving circuit.
8.如权利要求 7所述的车载多媒体播放控制芯片， 其特征在于， 当所述视频处理电 路同时接收到所述第一多媒体输入信号与所述第二多媒体输入信号， 所述视频处理电路 针对所接收的所述第一多媒体输出信号及所述第二多媒体输入信号执行画中画处理， 来 产生所述至少一多媒体输出信号。  The in-vehicle multimedia playback control chip according to claim 7, wherein when the video processing circuit simultaneously receives the first multimedia input signal and the second multimedia input signal, The video processing circuit performs a picture-in-picture process on the received first multimedia output signal and the second multimedia input signal to generate the at least one multimedia output signal.
9.一种驱动车载多媒体播放装置的方法， 其特征在于， 所述方法包括：  A method for driving an in-vehicle multimedia playback device, the method comprising:
设置车载多媒体播放控制芯片， 其中光驱控制电路以及信号输入接口均整合于所述 车载多媒体播放控制芯片中， 所述光驱控制电路用以控制光驱伺服运作并处理自光盘所 读取的储存信息来产生第一多媒体输入信号， 以及所述信号输入接口用以产生第二多媒 体输入信号； 以及  Providing a vehicle multimedia playback control chip, wherein the optical drive control circuit and the signal input interface are integrated in the vehicle multimedia playback control chip, wherein the optical drive control circuit is configured to control the optical disk drive operation and process the stored information read from the optical disk to generate a first multimedia input signal, and the signal input interface for generating a second multimedia input signal;
当接收到所述第一多媒体输出信号以及所述第二多媒体输入信号中至少其一时， 使 用所述车载多媒体播放控制芯片来据此产生至少一多媒体输出信号， 并依据所述至少一 多媒体输出信号来驱动至少一车载多媒体播放装置。  When the at least one of the first multimedia output signal and the second multimedia input signal is received, the at least one multimedia output signal is generated according to the vehicle multimedia playback control chip, and according to the at least A multimedia output signal drives at least one in-vehicle multimedia playback device.
10.如权利要求 9所述的方法， 其特征在于， 使用所述车载多媒体播放控制芯片来据 此产生所述至少一多媒体输出信号的步骤包括：  The method according to claim 9, wherein the step of generating the at least one multimedia output signal by using the in-vehicle multimedia playback control chip comprises:
于同时接收到所述第一多媒体输入信号与所述第二多媒体输入信号时， 针对所接收 的所述第一多媒体输出信号及所述第二多媒体输入信号执行画中画处理， 来产生所述至 少一多媒体输出信号。  Performing drawing on the received first multimedia output signal and the second multimedia input signal when receiving the first multimedia input signal and the second multimedia input signal simultaneously The middle picture processing processes to generate the at least one multimedia output signal.
PCT/CN2010/079934 2010-12-17 2010-12-17 Vehicle multimedia player control chip and drive method thereof WO2012079244A1 (en)

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