WO2008069548A1 - Complex digital multimedia broadcasting receiver - Google Patents
Complex digital multimedia broadcasting receiver Download PDFInfo
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- WO2008069548A1 WO2008069548A1 PCT/KR2007/006250 KR2007006250W WO2008069548A1 WO 2008069548 A1 WO2008069548 A1 WO 2008069548A1 KR 2007006250 W KR2007006250 W KR 2007006250W WO 2008069548 A1 WO2008069548 A1 WO 2008069548A1
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- data
- wireless communication
- moving image
- dmb
- decoded
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- 238000004891 communication Methods 0.000 claims description 46
- 230000005236 sound signal Effects 0.000 claims description 26
- 230000035945 sensitivity Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000006870 function Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 229920001690 polydopamine Polymers 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/78—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations
- H04H60/80—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations characterised by transmission among terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/82—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself the transmission system being the Internet
- H04H60/83—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself the transmission system being the Internet accessed over telephonic networks
- H04H60/85—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself the transmission system being the Internet accessed over telephonic networks which are mobile communication networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
Definitions
- the present invention relates to a complex digital multimedia broadcast (DMB) receiver, and more particularly to a complex DMB receiver which not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network.
- DMB digital multimedia broadcast
- DMB Digital Multimedia Broadcasting
- radio radio
- TV video
- DMB was initially developed to provide digital radio services so that it could process audio data at a rate of up to 380kbps.
- DMB can provide moving image services since it can process data at a rate higher than 380kbps.
- DMB Digital multimedia broadcasting
- DMBs can be mainly divided into satellite DMBs and terrestrial DMBs. Like general TV broadcasts, terrestrial DMBs are transmitted by a transmitting station so that users view the DMBs by receiving the corresponding signals. Satellite DMBs are broadcast all over the country through satellites.
- the terrestrial DMBs provide various contents such as music, text, and moving images through mobile terminals such as small TVs or PDAs.
- Terrestrial DMBs can be implemented so as to be complementary with digital terrestrial TV broadcasts, so that services combined with mobile communication terminals will create great demand.
- the satellite DMBs provide multimedia broadcast services including audio, extra data, or moving images to a stationary, mobile, and portable receiver through satellites.
- the satellite DMBs can provide audio broadcast services of various qualities at a low cost and can cover a wide area and significantly increase the available broadcasting range using satellites.
- terrestrial and satellite DMBs are similar to the differences between general and satellite TV broadcasts. That is, terrestrial DMBs can be viewed for free while satellite DMBs are provided at some cost due to the usage fees of satellites. Another difference is that satellite DMBs are currently provided over tens of channels while terrestrial DMBs are provided over a smaller number of channels. However, it is expected that the number of channels of terrestrial DMBs will be gradually increased.
- FIG. 1 is a conceptual diagram of general digital broadcasting.
- signals such as video and audio signals produced at a broadcasting station are transmitted through a transmitting earth station and a geosynchronous satellite is used as a repeater to send the signals to a distant receiving earth station.
- a terrestrial digital broadcasting station transmits signals to a digital broadcasting satellite.
- the satellite receives the signals and transmits them as downstream signals through an S-band of 2GHz-4GHz.
- signals such as video and audio signals produced at a broadcasting station are transferred to a repeater, which then sends them as downstream signals through a UHF or VHF or L-band.
- Such digital broadcast signals are received by mobile and stationary digital broadcast receivers to allow users to view various moving images.
- Terrestrial DMB receivers currently available in this country can provide combinations of a PMP function for storing MPEG-4 moving images, an MP3 function, an electronic dictionary function for students, a digital camera function, and the like.
- any currently developed or productized technologies do not allow a DMB receiving module to transmit data to a counterpart Internet address through a wireless network or to receive various data from a counterpart terminal through a wireless network and then to store or display the received data. Disclosure of Invention Technical Problem
- the present invention has been made in view of the above problems, and it is an object of the present invention to provide a complex DMB receiver which not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network.
- a complex digital multimedia broadcast (DMB) receiver comprising an antenna for receiving DMB signals; a tuner that is tuned to and filters a specific frequency band of a DMB signal received from the antenna; a decoder for extracting moving image data and an audio signal included in the tuned frequency and then decoding and outputting the decoded moving image data and audio signal according to a preset format; an audio processor for converting the audio signal decoded by the decoder into an analog audio signal and outputting the analog audio signal; a video/graphics processor for converting the moving image data decoded by the decoder into an analog signal and outputting the analog signal; a display unit for displaying the moving image signal output from the video/graphics processor on a screen; a wireless communication module for receiving the data decoded by the decoder and storing the decoded data in storage means or transmitting the decoded data in real time to a specific Internet address through a wireless communication
- DMB digital multimedia broadcast
- the main controller measures transmission and reception sensitivities of the wireless communication antenna and displays the measured transmission and reception sensitivities on the display unit.
- the wireless communication module communicates wireless data with an external terminal using a wireless Internet including Wibro or HSDPA or using a mobile phone network including CDMA or GSM.
- the complex DMB receiver according to the invention not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network, thereby making it possible to provide two-way Internet services.
- FIG. 1 is a conceptual diagram of general digital broadcasting
- FIG. 2 illustrates the overall configuration of a complex DMB receiver according to an embodiment of the invention.
- a complex digital multimedia broadcast receiver includes a first storage unit 10, an antenna 5, a tuner 20, a decoder 30, an audio processor 40, a video/graphics processor 50, a main controller 60, a display unit 70, a second storage unit 80, and a wireless communication module 90.
- the first storage unit 10 stores an operating program through which the main controller operates an entire system of the DMB receiver.
- the antenna 5 receives digital multimedia broadcast (DMB) signals.
- the tuner 20 receives a frequency tuned according to a frequency tuning signal received from the main controller 60.
- the decoder 30 In response to a control signal received from the main controller 60, the decoder 30 extracts moving image data and an audio signal included in the tuned frequency and then decodes and outputs the moving image data and audio signal according to a preset format.
- the audio processor 40 converts the audio signal decoded by the decoder 30 into an analog audio signal and outputs the analog audio signal.
- the video/graphics processor 50 converts the moving image data decoded by the decoder 30 into an analog signal and outputs the analog signal.
- the display unit 70 displays the moving image signal output from the video/graphics processor 50 on a screen according to control of the main controller 60.
- the second storage unit 80 stores moving image data processed by the video/graphics processor 50.
- the wireless communication module 90 receives the data decoded by the decoder 30 and stores the decoded data in storage means 97 or transmits the decoded data in real time to a specific Internet address through a wireless communication antenna 95 or transmits data stored in the storage means 97 to a specific Internet address through the wireless communication antenna 95 or stores data received through the wireless communication antenna 95 in the storage means 97.
- the main controller 60 outputs the frequency tuning signal to the tuner 20 and controls the entire system according to the operating program stored in the first storage unit 10 so as to provide moving image data and an audio signal included in a frequency tuned by the tuner 20 to the user and also to allow the wireless communication module 90 to communicate (i.e., transmits and receives) wireless data through the wireless communication antenna 95.
- FIG. 2 illustrates the overall configuration of a complex DMB receiver according to an embodiment of the invention.
- the complex DMB receiver according to the invention is designed so as to receive and decode a DMB signal and output the decoded DMB signal through a display device or a speaker provided in the receiver in response to a request from a user or to communicate wireless data with an external terminal through an additionally-installed wireless communication module via a wireless Internet or a mobile phone network.
- the complex DMB receiver includes a first storage unit 10, an antenna 5, a tuner 20, a decoder 30, an audio processor 40, a video/graphics processor 50, a main controller 60, a display unit 70, a second storage unit 80, and a wireless communication module 90.
- the first storage unit 10 stores an operating program through which the main controller operates an entire system of the DMB receiver.
- the antenna 5 receives DMB signals.
- the tuner 20 receives a frequency tuned according to a frequency tuning signal received from the main controller 60.
- the decoder 30 In response to a control signal received from the main controller 60, the decoder 30 extracts moving image data and an audio signal included in the tuned frequency and then decodes and outputs the moving image data and audio signal according to a preset format.
- the audio processor 40 converts the audio signal decoded by the decoder 30 into an analog audio signal and outputs the analog audio signal.
- the video/graphics processor 50 converts the moving image data decoded by the decoder 30 into an analog signal and outputs the analog signal.
- the display unit 70 displays the moving image signal output from the video/graphics processor 50 on a screen according to control of the main controller 60.
- the second storage unit 80 stores moving image data processed by the video/graphics processor 50.
- the wireless communication module 90 receives the data decoded by the decoder 30 and stores the decoded data in storage means 97 or transmits the decoded data in real time to a specific Internet address through a wireless communication antenna 95 or transmits data stored in the storage means 97 to a specific Internet address through the wireless communication antenna 95 or stores data received through the wireless communication antenna 95 in the storage means 97.
- the main controller 60 outputs the frequency tuning signal to the tuner 20 and controls the entire system according to the operating program stored in the first storage unit 10 so as to provide moving image data and an audio signal included in a frequency tuned by the tuner 20 to the user and also to allow the wireless communication module 90 to communicate wireless data through the wireless communication antenna 95.
- the DMB receiver also includes a first port through which it outputs moving image data processed by the video/graphics processor 50.
- the first port is a USB port which allows the DMB receiver to transmit the moving image data received through the antenna to a computer system connected through the USB port.
- the DMB receiver includes a second port to output data for high-speed digital moving image processing.
- the second port is an RS 1394 port.
- the second storage unit 80 includes a hard disk, a flash memory, an external storage medium, and any other storage medium.
- the second storage unit 80 includes any of internal and external storage devices.
- the user of the DMB receiver can set a desired frequency band or channel and receive a digital multimedia broadcast received through the frequency band.
- the main controller 60 of the DMB receiver receives a key signal corresponding to the channel selected by the user and outputs a frequency tuning signal corresponding to the key signal to the tuner 20.
- the frequency tuning signal is provided to select the channel of the frequency band.
- the tuner 20 then receives only a signal of the channel corresponding to the frequency tuning signal of the main controller 60 among signals received through the antenna 5 and outputs the received signal to the decoder 30.
- the decoder 30 decodes the received signal into a channel, moving image data, and audio data according to a preset format and outputs the audio data to the audio processor 40 and outputs the moving image data to the video/graphics processor 50.
- the audio data which is to be decoded by the decoder 30, has been basically encoded according to MPEG 1 Layer 2 or MPEG 2 Layer 2 or advanced audio coding
- the decoder 30 converts a signal received from the tuner 20 into a digital signal and separates the digital signal into audio and video signals and outputs the audio and video signals to the audio processor 40 and the video/graphics processor 50, respectively.
- the decoder 30 separates a signal multiplexed according to the DAB standard into a digital audio signal, a digital moving image signal, a digital extra data signal, and the like and outputs the signals to their corresponding processing blocks.
- the audio processor 40 then converts the audio data into an analog signal and outputs the analog signal to L and R ports of the speaker.
- the video/graphics processor 50 performs signal processing of the decoded moving image data so that the moving image data can be output through the display unit 70 (i.e., an LCD).
- the video/graphics processor 50 also outputs the moving image signal to the USB port or the RS 1394 port provided on the DMB receiver 100.
- the USB port is connected to a computer system to allow the user to store received moving images in the computer system and then to again view them at a later time.
- the audio processor 40 separately performs audio processing so that audio data is output, together with moving image data, to the USB port, the RS 1394 port, and the second storage unit 80.
- the main controller 60 controls the video/graphics processor 50 to store moving image data and audio data decoded by the decoder 30 in the second storage unit 80.
- the decoder 30 and the video/graphics processor 50 according to the invention can process MPEG-4 compressed moving image data and also can process different types of moving images from the MPEG-4 images.
- the audio data in the invention has been encoded according to advance audio coding (AAC) compatible with MPEG-r moving images or has been encoded according to bit slice arithmetic coding (BSAC).
- AAC advance audio coding
- BSAC bit slice arithmetic coding
- the data decoded by the decoder 30 can be transferred to the wireless communication module 90 according to control of the main controller 60.
- the data input to the wireless communication module 90 can be stored in the third storage unit 97 or can be transmitted in real time to a wireless network through the wireless communication antenna 95 according to control of the main controller 60.
- the wireless communication module According to control of the main controller 60, the wireless communication module
- a wireless network for example through a wireless Internet such as Wibro or HSDPA or a mobile phone network such as CDMA or GSM.
- a wireless Internet such as Wibro or HSDPA
- a mobile phone network such as CDMA or GSM.
- the wireless communication module According to control of the main controller 60, the wireless communication module
- the 90 can transmit data stored in the third storage unit 97 to a specific Internet address through the wireless communication antenna 95.
- the stored data can be transmitted to a counterpart terminal (computer or mobile terminal) through the wireless network after the data is processed using an edit function provided by an OS installed on the wireless communication module 90.
- Wireless data received through the wireless communication antenna 95 can be stored in the third storage means 97 or the stored data can be displayed on the display unit 70 according to control of the main controller 60.
- the third storage means 97 may be one or two or more of an external memory, or a hard disk, and an SD card.
- the main controller 60 When transmitting and receiving wireless data to and from the counterpart terminal through the wireless communication module 90, the main controller 60 continuously measures transmission and reception sensitivities of the wireless communication antenna 95 and outputs the reception sensitivity to the (LCD) display unit 70 through the video/graphics processor 50.
- the main controller 60 checks the status of wireless Internet connection with the counterpart terminal by continuously measuring the transmission and reception sensitivities of the wireless communication antenna 90 and displays the checked result on the display unit 70.
- the main controller 60 controls the overall components of the complex DMB receiver according to the invention to allow the digital multimedia broadcast to be provided to the user through the display unit and to allow the wireless communication module to communicate wireless data through the wireless communication antenna so that the complex DMB receiver can provide two-way Internet services.
- the complex DMB receiver according to the preferred embodiments of the invention constructed as described above, is very useful in digital broadcast fields since it not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network, thereby making it possible to provide two-way Internet services.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A complex DMB receiver is provided which not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network and can receive various data from the counterpart terminal through the wireless network.
Description
Description
COMPLEX DIGITAL MULTIMEDIA BROADCASTING
RECEIVER
Technical Field
[1] The present invention relates to a complex digital multimedia broadcast (DMB) receiver, and more particularly to a complex DMB receiver which not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network. Background Art
[2] Digital Multimedia Broadcasting (DMB) is mobile multimedia broadcasting which allows users to enjoy high-quality audio (radio) and video (TV) services even while in motion. DMB was initially developed to provide digital radio services so that it could process audio data at a rate of up to 380kbps. Now, DMB can provide moving image services since it can process data at a rate higher than 380kbps.
[3] Although TV receivers were installed in some vehicles, they have problems such as scratches or disconnection since their reception is bad. Digital multimedia broadcasting (DMB), which is a type of mobile TV broadcasting, is being commercially developed to overcome the problems. Currently -provided DMB allows users to view high-quality broadcasts without disconnection. Now, users can view DMBs even by using their phones along with development of miniaturization technologies.
[4] DMBs can be mainly divided into satellite DMBs and terrestrial DMBs. Like general TV broadcasts, terrestrial DMBs are transmitted by a transmitting station so that users view the DMBs by receiving the corresponding signals. Satellite DMBs are broadcast all over the country through satellites.
[5] Due to their good mobile reception characteristics, the terrestrial DMBs provide various contents such as music, text, and moving images through mobile terminals such as small TVs or PDAs. Terrestrial DMBs can be implemented so as to be complementary with digital terrestrial TV broadcasts, so that services combined with mobile communication terminals will create great demand.
[6] The satellite DMBs provide multimedia broadcast services including audio, extra data, or moving images to a stationary, mobile, and portable receiver through satellites. The satellite DMBs can provide audio broadcast services of various qualities at a low cost and can cover a wide area and significantly increase the available broadcasting range using satellites.
[7] The differences between terrestrial and satellite DMBs are similar to the differences
between general and satellite TV broadcasts. That is, terrestrial DMBs can be viewed for free while satellite DMBs are provided at some cost due to the usage fees of satellites. Another difference is that satellite DMBs are currently provided over tens of channels while terrestrial DMBs are provided over a smaller number of channels. However, it is expected that the number of channels of terrestrial DMBs will be gradually increased.
[8] In consideration of current development of technologies, users will be able to view high-quality broadcasts using HD TVs at home and to view DMBs while they are in motion, i.e., when they are driving cars or using mobile phones or PDAs.
[9] FIG. 1 is a conceptual diagram of general digital broadcasting.
[10] As shown in FIG. 1, in the case of satellite broadcasting, signals such as video and audio signals produced at a broadcasting station are transmitted through a transmitting earth station and a geosynchronous satellite is used as a repeater to send the signals to a distant receiving earth station. Specifically, a terrestrial digital broadcasting station transmits signals to a digital broadcasting satellite. The satellite receives the signals and transmits them as downstream signals through an S-band of 2GHz-4GHz. On the other hand, in the case of terrestrial broadcasting, signals such as video and audio signals produced at a broadcasting station are transferred to a repeater, which then sends them as downstream signals through a UHF or VHF or L-band. Such digital broadcast signals are received by mobile and stationary digital broadcast receivers to allow users to view various moving images.
[11] Terrestrial DMB receivers currently available in this country can provide combinations of a PMP function for storing MPEG-4 moving images, an MP3 function, an electronic dictionary function for students, a digital camera function, and the like.
[12] However, any currently developed or productized technologies do not allow a DMB receiving module to transmit data to a counterpart Internet address through a wireless network or to receive various data from a counterpart terminal through a wireless network and then to store or display the received data. Disclosure of Invention Technical Problem
[13] Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a complex DMB receiver which not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network. Technical Solution
[14] In accordance with an aspect of the present invention, the above and other objects
can be accomplished by the provision of a complex digital multimedia broadcast (DMB) receiver comprising an antenna for receiving DMB signals; a tuner that is tuned to and filters a specific frequency band of a DMB signal received from the antenna; a decoder for extracting moving image data and an audio signal included in the tuned frequency and then decoding and outputting the decoded moving image data and audio signal according to a preset format; an audio processor for converting the audio signal decoded by the decoder into an analog audio signal and outputting the analog audio signal; a video/graphics processor for converting the moving image data decoded by the decoder into an analog signal and outputting the analog signal; a display unit for displaying the moving image signal output from the video/graphics processor on a screen; a wireless communication module for receiving the data decoded by the decoder and storing the decoded data in storage means or transmitting the decoded data in real time to a specific Internet address through a wireless communication antenna or transmitting data stored in the storage means to a specific Internet address through the wireless communication antenna or stores data received through the wireless communication antenna in the storage means; and a main controller for controlling overall components of the receiver to allow the DMB to be provided to the user through the display unit and to allow the wireless communication module to communicate wireless data through the wireless communication antenna.
[15] The main controller measures transmission and reception sensitivities of the wireless communication antenna and displays the measured transmission and reception sensitivities on the display unit.
[16] The wireless communication module communicates wireless data with an external terminal using a wireless Internet including Wibro or HSDPA or using a mobile phone network including CDMA or GSM.
Advantageous Effects
[17] As described above in the Technical Solution, the complex DMB receiver according to the invention not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network, thereby making it possible to provide two-way Internet services.
Brief Description of the Drawings
[18] FIG. 1 is a conceptual diagram of general digital broadcasting; and
[19] FIG. 2 illustrates the overall configuration of a complex DMB receiver according to an embodiment of the invention.
[20] * Description of Reference Numerals of Main Parts of the Drawings*
[21] 5: antenna 10: first storage unit
[22] 20: tuner 30: decoder
[23] 40: audio processor 50: video/graphics processor
[24] 60: main controller 70: display (LCD)
[25] 80: second storage 90: wireless communication module
[26] 95: wireless communication antenna 97: third storage
Best Mode for Carrying Out the Invention
[27] As shown in FIG. 2, a complex digital multimedia broadcast receiver according to the present invention includes a first storage unit 10, an antenna 5, a tuner 20, a decoder 30, an audio processor 40, a video/graphics processor 50, a main controller 60, a display unit 70, a second storage unit 80, and a wireless communication module 90. The first storage unit 10 stores an operating program through which the main controller operates an entire system of the DMB receiver. The antenna 5 receives digital multimedia broadcast (DMB) signals. The tuner 20 receives a frequency tuned according to a frequency tuning signal received from the main controller 60. In response to a control signal received from the main controller 60, the decoder 30 extracts moving image data and an audio signal included in the tuned frequency and then decodes and outputs the moving image data and audio signal according to a preset format. The audio processor 40 converts the audio signal decoded by the decoder 30 into an analog audio signal and outputs the analog audio signal. The video/graphics processor 50 converts the moving image data decoded by the decoder 30 into an analog signal and outputs the analog signal. The display unit 70 displays the moving image signal output from the video/graphics processor 50 on a screen according to control of the main controller 60. The second storage unit 80 stores moving image data processed by the video/graphics processor 50. The wireless communication module 90 receives the data decoded by the decoder 30 and stores the decoded data in storage means 97 or transmits the decoded data in real time to a specific Internet address through a wireless communication antenna 95 or transmits data stored in the storage means 97 to a specific Internet address through the wireless communication antenna 95 or stores data received through the wireless communication antenna 95 in the storage means 97. The main controller 60 outputs the frequency tuning signal to the tuner 20 and controls the entire system according to the operating program stored in the first storage unit 10 so as to provide moving image data and an audio signal included in a frequency tuned by the tuner 20 to the user and also to allow the wireless communication module 90 to communicate (i.e., transmits and receives) wireless data through the wireless communication antenna 95. Mode for the Invention
[28] Preferred embodiments of the complex digital multimedia broadcast (DMB)
receiver according to the invention, which includes the above components, will now be described in detail with reference to the accompanying drawings.
[29] FIG. 2 illustrates the overall configuration of a complex DMB receiver according to an embodiment of the invention.
[30] The complex DMB receiver according to the invention is designed so as to receive and decode a DMB signal and output the decoded DMB signal through a display device or a speaker provided in the receiver in response to a request from a user or to communicate wireless data with an external terminal through an additionally-installed wireless communication module via a wireless Internet or a mobile phone network.
[31] As shown in FIG. 2, the complex DMB receiver according to the invention includes a first storage unit 10, an antenna 5, a tuner 20, a decoder 30, an audio processor 40, a video/graphics processor 50, a main controller 60, a display unit 70, a second storage unit 80, and a wireless communication module 90. The first storage unit 10 stores an operating program through which the main controller operates an entire system of the DMB receiver. The antenna 5 receives DMB signals. The tuner 20 receives a frequency tuned according to a frequency tuning signal received from the main controller 60. In response to a control signal received from the main controller 60, the decoder 30 extracts moving image data and an audio signal included in the tuned frequency and then decodes and outputs the moving image data and audio signal according to a preset format. The audio processor 40 converts the audio signal decoded by the decoder 30 into an analog audio signal and outputs the analog audio signal. The video/graphics processor 50 converts the moving image data decoded by the decoder 30 into an analog signal and outputs the analog signal. The display unit 70 displays the moving image signal output from the video/graphics processor 50 on a screen according to control of the main controller 60. The second storage unit 80 stores moving image data processed by the video/graphics processor 50. The wireless communication module 90 receives the data decoded by the decoder 30 and stores the decoded data in storage means 97 or transmits the decoded data in real time to a specific Internet address through a wireless communication antenna 95 or transmits data stored in the storage means 97 to a specific Internet address through the wireless communication antenna 95 or stores data received through the wireless communication antenna 95 in the storage means 97. The main controller 60 outputs the frequency tuning signal to the tuner 20 and controls the entire system according to the operating program stored in the first storage unit 10 so as to provide moving image data and an audio signal included in a frequency tuned by the tuner 20 to the user and also to allow the wireless communication module 90 to communicate wireless data through the wireless communication antenna 95.
[32] The DMB receiver also includes a first port through which it outputs moving image
data processed by the video/graphics processor 50. The first port is a USB port which allows the DMB receiver to transmit the moving image data received through the antenna to a computer system connected through the USB port. [33] In addition to the USB port, the DMB receiver includes a second port to output data for high-speed digital moving image processing. Here, the second port is an RS 1394 port. [34] The second storage unit 80 includes a hard disk, a flash memory, an external storage medium, and any other storage medium. The second storage unit 80 includes any of internal and external storage devices. [35] The user of the DMB receiver can set a desired frequency band or channel and receive a digital multimedia broadcast received through the frequency band. [36] The main controller 60 of the DMB receiver receives a key signal corresponding to the channel selected by the user and outputs a frequency tuning signal corresponding to the key signal to the tuner 20. The frequency tuning signal is provided to select the channel of the frequency band. The signal described above is created by combining and processing, according to a specific scheme, digital audio signal processed according to the DAB method and moving image data encoded according to the
MPEG4. [37] The tuner 20 then receives only a signal of the channel corresponding to the frequency tuning signal of the main controller 60 among signals received through the antenna 5 and outputs the received signal to the decoder 30. [38] The decoder 30 decodes the received signal into a channel, moving image data, and audio data according to a preset format and outputs the audio data to the audio processor 40 and outputs the moving image data to the video/graphics processor 50. [39] Here, the audio data, which is to be decoded by the decoder 30, has been basically encoded according to MPEG 1 Layer 2 or MPEG 2 Layer 2 or advanced audio coding
(AAC) and may also have been encoded according to window media audio (WMA). [40] That is, the decoder 30 converts a signal received from the tuner 20 into a digital signal and separates the digital signal into audio and video signals and outputs the audio and video signals to the audio processor 40 and the video/graphics processor 50, respectively. [41] Specifically, the decoder 30 separates a signal multiplexed according to the DAB standard into a digital audio signal, a digital moving image signal, a digital extra data signal, and the like and outputs the signals to their corresponding processing blocks.
The audio processor 40 then converts the audio data into an analog signal and outputs the analog signal to L and R ports of the speaker. [42] The video/graphics processor 50 performs signal processing of the decoded moving image data so that the moving image data can be output through the display unit 70
(i.e., an LCD). The video/graphics processor 50 also outputs the moving image signal to the USB port or the RS 1394 port provided on the DMB receiver 100.
[43] The USB port is connected to a computer system to allow the user to store received moving images in the computer system and then to again view them at a later time. The audio processor 40 separately performs audio processing so that audio data is output, together with moving image data, to the USB port, the RS 1394 port, and the second storage unit 80.
[44] When there is a need to perform high-speed digital moving image processing which cannot be supported by the USB port, a corresponding processing system is connected to the RS 1394 port.
[45] In response to a storage key signal input according to the intention of the user, the main controller 60 controls the video/graphics processor 50 to store moving image data and audio data decoded by the decoder 30 in the second storage unit 80.
[46] The decoder 30 and the video/graphics processor 50 according to the invention can process MPEG-4 compressed moving image data and also can process different types of moving images from the MPEG-4 images. The audio data in the invention has been encoded according to advance audio coding (AAC) compatible with MPEG-r moving images or has been encoded according to bit slice arithmetic coding (BSAC). The AAC or BSAC provides the highest compression rate and sound quality among the existing audio coding methods.
[47] The data decoded by the decoder 30 can be transferred to the wireless communication module 90 according to control of the main controller 60. The data input to the wireless communication module 90 can be stored in the third storage unit 97 or can be transmitted in real time to a wireless network through the wireless communication antenna 95 according to control of the main controller 60.
[48] According to control of the main controller 60, the wireless communication module
90 can transmit the data to a specific Internet address through a wireless network, for example through a wireless Internet such as Wibro or HSDPA or a mobile phone network such as CDMA or GSM.
[49] According to control of the main controller 60, the wireless communication module
90 can transmit data stored in the third storage unit 97 to a specific Internet address through the wireless communication antenna 95. The stored data can be transmitted to a counterpart terminal (computer or mobile terminal) through the wireless network after the data is processed using an edit function provided by an OS installed on the wireless communication module 90.
[50] Wireless data received through the wireless communication antenna 95 can be stored in the third storage means 97 or the stored data can be displayed on the display unit 70 according to control of the main controller 60. As a result, two-way data
services can be provided through the wireless Internet. The third storage means 97 may be one or two or more of an external memory, or a hard disk, and an SD card.
[51] When transmitting and receiving wireless data to and from the counterpart terminal through the wireless communication module 90, the main controller 60 continuously measures transmission and reception sensitivities of the wireless communication antenna 95 and outputs the reception sensitivity to the (LCD) display unit 70 through the video/graphics processor 50.
[52] That is, the main controller 60 checks the status of wireless Internet connection with the counterpart terminal by continuously measuring the transmission and reception sensitivities of the wireless communication antenna 90 and displays the checked result on the display unit 70.
[53] As described above, the main controller 60 controls the overall components of the complex DMB receiver according to the invention to allow the digital multimedia broadcast to be provided to the user through the display unit and to allow the wireless communication module to communicate wireless data through the wireless communication antenna so that the complex DMB receiver can provide two-way Internet services. Industrial Applicability
[54] The complex DMB receiver according to the preferred embodiments of the invention, constructed as described above, is very useful in digital broadcast fields since it not only has a multimedia function but also can transmit a received digital multimedia broadcast to a counterpart Internet address through a wireless network or can receive various data from a counterpart terminal through a wireless network, thereby making it possible to provide two-way Internet services.
Claims
[1] A complex digital multimedia broadcast (DMB) receiver comprising: an antenna for receiving DMB signals; a tuner that is tuned to and filters a specific frequency band of DMB signals received from the antenna; a decoder for extracting moving image data and an audio signal included in the tuned frequency and then decoding and outputting the decoded the moving image data and audio signal according to a preset format; an audio processor for converting the audio signal decoded by the decoder into an analog audio signal and outputting the analog audio signal; a video/graphics processor for converting the moving image data decoded by the decoder into analog moving image signal and outputting the analog moving image signal; a display unit for displaying the analog moving image signal outputted from the video/graphics processor on a screen; a wireless communication module for receiving the data decoded by the decoder and storing the received data in storage means or transmitting the decoded data in real time to a specific Internet address through a wireless communication antenna or transmitting data stored in the storage means to a specific Internet address through the wireless communication antenna or stores data received through the wireless communication antenna in the storage means; and a main controller for controlling overall components of the receiver to allow the DMB to be provided to the user through the display unit and to allow the wireless communication module to transmit or receive wireless data through the wireless communication antenna.
[2] The complex DMB receiver apparatus according to claim 1, wherein the main controller measures transmission and reception sensitivities of the wireless communication antenna and displays the measured transmission and reception sensitivities on the display unit.
[3] The complex DMB receiver apparatus according to claim 1, wherein the wireless communication module communicates wireless data with an external terminal using a wireless Internet including Wibro or HSDPA or using a mobile phone network including CDMA or GSM.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0122362 | 2006-12-05 | ||
KR1020060122362A KR100857520B1 (en) | 2006-12-05 | 2006-12-05 | complex digital multimedea broadcasting receiver |
Publications (1)
Publication Number | Publication Date |
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WO2008069548A1 true WO2008069548A1 (en) | 2008-06-12 |
Family
ID=39492360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2007/006250 WO2008069548A1 (en) | 2006-12-05 | 2007-12-04 | Complex digital multimedia broadcasting receiver |
Country Status (2)
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KR (1) | KR100857520B1 (en) |
WO (1) | WO2008069548A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108199797A (en) * | 2018-03-02 | 2018-06-22 | 朱志国 | DMB+ Multimedia Mobile array terminals |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20050033304A (en) * | 2003-10-06 | 2005-04-12 | 엘지전자 주식회사 | Digital multimedia broadcasting receiver |
WO2005071964A1 (en) * | 2004-01-27 | 2005-08-04 | Matsushita Electric Industrial Co., Ltd. | Television receiver and digital broadcast system |
US20050177848A1 (en) * | 2004-02-05 | 2005-08-11 | Lg Electronics Inc. | Display device and method of managing list of channel information in video display device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20030062747A (en) * | 2002-01-18 | 2003-07-28 | (주)프리샛 코리아 | Digital Audio broadcasting Receiver having modem and storage equipment working together outer equipment |
KR100490258B1 (en) * | 2003-04-30 | 2005-05-17 | 실리샌드 주식회사 | Digital audio broadcasting receier and operating methode thereof |
-
2006
- 2006-12-05 KR KR1020060122362A patent/KR100857520B1/en not_active IP Right Cessation
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2007
- 2007-12-04 WO PCT/KR2007/006250 patent/WO2008069548A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050033304A (en) * | 2003-10-06 | 2005-04-12 | 엘지전자 주식회사 | Digital multimedia broadcasting receiver |
WO2005071964A1 (en) * | 2004-01-27 | 2005-08-04 | Matsushita Electric Industrial Co., Ltd. | Television receiver and digital broadcast system |
US20050177848A1 (en) * | 2004-02-05 | 2005-08-11 | Lg Electronics Inc. | Display device and method of managing list of channel information in video display device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108199797A (en) * | 2018-03-02 | 2018-06-22 | 朱志国 | DMB+ Multimedia Mobile array terminals |
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KR20080051389A (en) | 2008-06-11 |
KR100857520B1 (en) | 2008-09-08 |
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