CN202282825U - MHL (Mobile High-Definition Link) data conversion system - Google Patents
MHL (Mobile High-Definition Link) data conversion system Download PDFInfo
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- CN202282825U CN202282825U CN2011204155713U CN201120415571U CN202282825U CN 202282825 U CN202282825 U CN 202282825U CN 2011204155713 U CN2011204155713 U CN 2011204155713U CN 201120415571 U CN201120415571 U CN 201120415571U CN 202282825 U CN202282825 U CN 202282825U
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Abstract
The utility model belongs to the technical field of electronics, and provides an MHL (Mobile High-Definition Link) data conversion system. The MHL data conversion system comprises a main controller, a power supply management unit, a CBUS (Control BUS), an external controller, an MHL code receiving center, an MHL code switching engine and an HDMI (High-Definition Multimedia Interface) launching center, wherein an AV (Audio/Video) signal in an MHL format is received by the MHL code receiving center and then switched into a signal in an HDMI format after entering into the MHL code switching engine, the signal in the HDMI format enters into the HDMI launching center and then is mixed with control signals, which are generated by a CBUS controller and a CBUS coder and processed by the main controller, to generate a standard HDMI signal, and the HDMI signal is output to a TV (Television) or a projector for playing, by the HDMI launching center. The MHL data conversion system provided by the utility model has the advantages that MHL signals which are transmitted by utilizing a 5-PIN MICRO USB (Universal Serial Bus) in a mobile phone or a PS3 (Player Station 3) are switched into 19-PIN HDMI signals which are frequently used in a common high-definition TV, a high-definition projector and a PC (Personal Computer), and AV playing is available.
Description
Technical field
The utility model belongs to electronic technology field, relates to a kind of data conversion system, is specifically related to a kind of MHL data conversion system.
Background technology
The present fashionable whole world of smart mobile phone; Its operating system speed is also more and more faster; Various high-definition multimedia programs progressively get into smart mobile phone; Its memory capacity is increasing, if can combine the content of storing on the personal mobile phone with HDTV, just can bring high-quality Voice & Video effect.We can realize this point through the HDMI interface; But the interface of mobile phone is often very little, and the pin number can not be many, if to the TV of high definition, have certain difficulty to the content play on the mobile phone like this; To challenge this difficulty and perfect realization this point just and release a MHL of crying interfacing; The MHL interface specification is to reflect company, Sony and Toshiba by Nokia, Samsung, silicon to develop jointly, and it can be reduced to 5 pins with HDMI 19 pin mouths, and signal does not have the transmission of compression ground; Can keep high definition image and audio quality like this; But do not have corresponding converting system control MHL in the reality, and can convert mobile phone signal to the HDMI signal, be transferred on the TV and play.
Summary of the invention
The utility model technical problem to be solved is the present situation to prior art; And a kind of MHL data conversion system is provided; Be applied to the MHL interface specification on the mobile phone; Utilize micro USB interface on the mobile phone as MHL output (MHL and micro USB shared interface), convert the HDMI signal to, be transferred in TV or the projector and play through native system.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of MHL data conversion system; It is characterized in that; Comprise master controller, PMU, CBUS controller, MHL code receiving center, MHL code-switching engine, HDMI launching centre and external control signal; Described PMU is connected with master controller and is used for to whole system electric energy being provided; Described master controller is connected with MHL code receiving center, HDMI launching centre and each external control signal respectively; Between MHL code receiving center and HDMI launching centre, be connected with the MHL code-switching engine; The audio-video signal that described MHL code receiving center receives the MHL form of mobile phone transmission enters into the signal that the MHL code-switching engine converts the MHL format signal to the HDMI form again; Enter into the HDMI launching centre again, mix the HDMI signal of generation standard mutually with handling generation HDMI control signal through master controller then, in TV or projector, play by HDMI launching centre output HDMI signal from CBUS controller, CBUS encoder.
The measure of taking for the optimization such scheme specifically comprises:
In above-mentioned a kind of MHL data conversion system; Described output HDMI signal has 19 the tunnel; Described mobile phone input list is organized data input signal RX+, RX-in MHL code receiving center, and converts four groups of data output signal TX2+, TX2-, TX2 ground signalling, TX1+, TX1-, TX1 ground signalling, TX0+, TX0-, TX0 ground signalling, TXC+, TXC-, TXC ground signallings of totally 12 tunnel to through MHL code-switching engine and HDMI launching centre.
In above-mentioned a kind of MHL data conversion system; Described data input signal RX+, RX-to the cable run distance of MHL code receiving center less than 10MM; Live width is controlled at 0.2mm, and does not allow any cabling in the 0.3mm scope around, and this section cabling is shielded.Can realize the transmission of MHL signal so better.
In above-mentioned a kind of MHL data conversion system; Described master controller also is connected with the CBUS control bus; The CBUS control bus comprises interconnective CBUS controller and CBUS encoder; Described CBUS control bus produces the HDMI control signal through the processing of master controller, comprising 3 road signals of DSCL, DSDA and CEC-A.
In above-mentioned a kind of MHL data conversion system, described output HDMI signal comprises that also 4 road signals are respectively HPD, GND, 5Vpower and stick signal reserved.
In above-mentioned a kind of MHL data conversion system, described data input/output signal adopts differential signal, 100 ohm of differential impedances, and 30 ohm of earth impedance, PCB layout adopts four laminates, and wherein the intermediate layer is bus plane and ground plane.Can improve antijamming capability like this, guarantee the accurate transmission of signal.
In above-mentioned a kind of MHL data conversion system; Described PMU comprises the input of 5V power supply, charge controller and 1.2V stabilized voltage power supply; Described 1.2V stabilized voltage power supply is connected with master controller; The power supply input of 5V is connected with charge controller, and charge controller is connected with master controller.
In above-mentioned a kind of MHL data conversion system; Described MHL code receiving center and HDMI launching centre receive the main controller controls under the control of CBUS control bus, and described external control signal comprises that the input of multichannel detection signal is respectively GPIO0 and the GPIO1 interface and the interrupt interface INT# of HDMI-DET, PWR5V-DET, PS-CTRL, two-way.
In above-mentioned a kind of MHL data conversion system, described master controller also is connected with the local I2C circuit of the control that is used for being connected with single-chip microcomputer.Here can connect single-chip microcomputer through local I2C circuit controls whole converting system.
Compared with prior art, the advantage of the utility model is:
1, solves the HDMI signal that MHL conversion of signals that the MICRO USB that utilizes 5PIN among mobile phone, the PS3 transmits becomes 19PIN commonly used among common HDTV, high definition projector, the PC, and can carry out audio frequency and video and play, the highlyest can support 1080p;
2, can support the audio transmission of 192kHz, the highest 7.1 sound channel LPCM (linear impulsive coded modulation) can be provided surround sound and compressed audio;
3,5V voltage and 500mA electric current are provided, coming constantly provides power and charging for mobile phone;
4, support HDCP (HDCP) technology.
Description of drawings
Fig. 1 is this MHL data conversion system user mode sketch map;
Fig. 2 is this MHL data conversion system circuit block diagram.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technical scheme of the utility model is done further to describe, but the utility model is not limited to these embodiment.
Among the figure, master controller 1; PMU 2; 5V power supply input 21; 1.2V stabilized voltage power supply 22; Charge controller 23; External control signal 3; MHL code receiving center 4; MHL code-switching engine 5; HDMI launching centre 6; CBUS control bus 7; CBUS controller 71; CBUS encoder 72; Local I2C circuit 8.
As depicted in figs. 1 and 2; This MHL data conversion system mainly is to be used for utilizing micro USB interface on the mobile phone as MHL output (MHL and micro USB shared interface); Convert 19 tunnel HDMI signal to through native system; Be transferred in TV or the projector and play, mainly comprise master controller 1, PMU 2, external control signal 3, MHL code receiving center 4, MHL code-switching engine 5 and HDMI launching centre 6, master controller 1 also is connected with CBUS control bus 7; CBUS control bus 7 comprises interconnective CBUS controller 71 and CBUS encoder 72; Here master controller 1 main employing Silicon Image application-specific integrated circuit is a master chip, and PMU 2 is connected with master controller 1 and is used for to whole system electric energy being provided, and PMU 2 comprises 5V power supply input 21, charge controller 23 and 1.2V stabilized voltage power supply 22; The power supply input of 5V all is connected with charge controller 23 with the stabilized voltage power supply of 1.2V; Charge controller 23 is connected with master controller 1, and 1.2V stabilized voltage power supply 22 is connected with master controller 1, can constantly for mobile phone power and charging be provided through charge controller 23 here; Voltage stabilizing simultaneously can guarantee the stable operation of whole system at 1.2V.
Master controller 1 is connected with MHL code receiving center 4, HDMI launching centre 6 and each external control signal 3 respectively; MHL code receiving center 4 receives the main controller controls under the control of CBUS control bus with HDMI launching centre 6, and external control signal 3 comprises that the input of multichannel detection signal is respectively GPIO0 and the GPIO1 interface and the interrupt interface INT# of HDMI-DET, PWR5V-DET, PS-CTRL, two-way.
Between MHL code receiving center 4 and HDMI launching centre 6, be connected with MHL code-switching engine 5; The audio-video signal that MHL code receiving center 4 receives the MHL form of mobile phone transmission enters into the signal that MHL code-switching engine 5 converts the MHL format signal to the HDMI form again; Enter into HDMI launching centre 6 again; Mix the HDMI signal of generation standard mutually with handling generation HDMI control signal through master controller then from CBUS controller, CBUS encoder; Play in TV or projector by HDMI launching centre 6 output HDMI signals; Output HDMI signal has 19 the tunnel; Mobile phone is exported differential data input signal RX+, RX-in MHL code receiving center 4, and converts four groups of data output signal TX2+, TX2-, TX2 ground signalling, TX1+, TX1-, TX1 ground signalling, TX0+, TX0-, TX0 ground signalling, TXC+, TXC-, TXC ground signallings of totally 12 tunnel to through MHL code-switching engine 5 and HDMI launching centre 6, and wherein TXC is a clock signal; In order to realize transmission signals better; The MHL signal RX+, the RX-cable run distance that are input to MHL code receiving center should be less than 10MM, and live width is controlled at 0.2mm, and do not allow any cabling in the 0.3mm scope around; CBUS control bus 7 is used to control master controller work; Also produce the HDMI control signal simultaneously; 3 road signals comprising DSCL, DSDA and CEC-A; Output HDMI signal comprises that also 4 road signals are respectively HPD, GND, 5Vpower and stick signal reserved, and wherein stick signal reserved is used for HDMI1.4 and can realizes the 3D video transmission.
For ease master controller 1 is controlled, master controller 1 also is connected with the local I2C circuit 8 of the control that is used for being connected with single-chip microcomputer, can connect single-chip microcomputers through local I2C circuit 8 here and control whole converting system.
In order to improve antijamming capability, guarantee the accurate transmission of signal in addition, the data input/output signal adopts differential signal, 100 ohm of differential impedances, and 30 ohm of earth impedance, PCB layout adopts four laminates, and wherein the intermediate layer is bus plane and ground plane.
Claims (9)
1. MHL data conversion system; It is characterized in that; Comprise master controller (1), PMU (2), CBUS controller (71), MHL code receiving center (4), MHL code-switching engine (5), HDMI launching centre (6) and external control signal (3); Described PMU (2) is connected with master controller (1) and is used for to whole system electric energy being provided; Described master controller (1) is connected with MHL code receiving center (4), HDMI launching centre (6) and each external control signal (3) respectively; Between MHL code receiving center (4) and HDMI launching centre (6), be connected with MHL code-switching engine (5); The audio-video signal that described MHL code receiving center (4) receives the MHL form of mobile phone transmission enters into the signal that MHL code-switching engine (5) converts the MHL format signal to the HDMI form again; Enter into HDMI launching centre (6) again, mix the HDMI signal of generation standard mutually with handling generation HDMI control signal through master controller (1) then, in TV or projector, play by HDMI launching centre (6) output HDMI signal from CBUS controller (71), CBUS encoder (72).
2. a kind of MHL data conversion system according to claim 1; It is characterized in that; Described output HDMI signal has 19 the tunnel; Described mobile phone input list is organized data input signal RX+, RX-in MHL code receiving center (4), and converts four groups of data output signal TX2+, TX2-, TX2 ground signalling, TX1+, TX1-, TX1 ground signalling, TX0+, TX0-, TX0 ground signalling, TXC+, TXC-, TXC ground signallings of totally 12 tunnel to through MHL code-switching engine (5) and HDMI launching centre (6).
3. a kind of MHL data conversion system according to claim 2; It is characterized in that; Less than 10MM, live width is controlled at 0.2mm, and does not allow any cabling in the 0.3mm scope around to the cable run distance of MHL code receiving center (4) for described data input signal RX+, RX-; And this section cabling shielded, can realize the transmission of MHL signal so better.
4. a kind of MHL data conversion system according to claim 3; It is characterized in that; Described master controller (1) also is connected with CBUS control bus (7); CBUS control bus (7) comprises interconnective CBUS controller (71) and CBUS encoder (72), and described CBUS control bus (7) produces the HDMI control signal through the processing of master controller (1), comprising 3 road signals of DSCL, DSDA and CEC-A.
5. a kind of MHL data conversion system according to claim 4 is characterized in that, described output HDMI signal comprises that also 4 road signals are respectively HPD, GND, 5Vpower and stick signal reserved.
6. according to each described a kind of MHL data conversion system of claim 1 to 5, it is characterized in that described data input/output signal adopts differential signal; 100 ohm of differential impedances; 30 ohm of earth impedance, PCB layout adopts four laminates, and wherein the intermediate layer is bus plane and ground plane; Can improve antijamming capability like this, guarantee the accurate transmission of signal.
7. a kind of MHL data conversion system according to claim 1; It is characterized in that; Described PMU (2) comprises the input of 5V power supply (21), charge controller (23) and 1.2V stabilized voltage power supply (22); Described 1.2V stabilized voltage power supply (22) is connected with master controller (1), and the power supply input of 5V is connected with charge controller (23), and charge controller (23) is connected with master controller (1).
8. a kind of MHL data conversion system according to claim 1; It is characterized in that; Described MHL code receiving center (4) and HDMI launching centre (6) receive master controller (1) control under CBUS control bus (7) control, and described external control signal (3) comprises that the input of multichannel detection signal is respectively GPIO0 and the GPIO1 interface and the interrupt interface INT# of HDMI-DET, PWR5V-DET, PS-CTRL, two-way.
9. a kind of MHL data conversion system according to claim 1 is characterized in that, described master controller (1) also is connected with the local I2C circuit (8) of the control that is used for being connected with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204155713U CN202282825U (en) | 2011-10-27 | 2011-10-27 | MHL (Mobile High-Definition Link) data conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204155713U CN202282825U (en) | 2011-10-27 | 2011-10-27 | MHL (Mobile High-Definition Link) data conversion system |
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| CN202282825U true CN202282825U (en) | 2012-06-20 |
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| CN2011204155713U Expired - Fee Related CN202282825U (en) | 2011-10-27 | 2011-10-27 | MHL (Mobile High-Definition Link) data conversion system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377970A (en) * | 2011-10-27 | 2012-03-14 | 浙江一舟电子科技股份有限公司 | MHL (Mobile High-Definition Link) data conversion system |
| CN102833513A (en) * | 2012-06-29 | 2012-12-19 | 惠州市德赛视听科技有限公司 | High-definition player |
| CN102932683A (en) * | 2012-10-26 | 2013-02-13 | 深圳Tcl新技术有限公司 | Mobile high-definition link (MHL) realizing method and video playing device |
| CN105868130A (en) * | 2015-12-08 | 2016-08-17 | 乐视移动智能信息技术（北京）有限公司 | Method and mobile terminal for controlling interface application program |
-
2011
- 2011-10-27 CN CN2011204155713U patent/CN202282825U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377970A (en) * | 2011-10-27 | 2012-03-14 | 浙江一舟电子科技股份有限公司 | MHL (Mobile High-Definition Link) data conversion system |
| CN102377970B (en) * | 2011-10-27 | 2014-01-15 | 浙江一舟电子科技股份有限公司 | MHL (Mobile High-Definition Link) data conversion system |
| CN102833513A (en) * | 2012-06-29 | 2012-12-19 | 惠州市德赛视听科技有限公司 | High-definition player |
| CN102833513B (en) * | 2012-06-29 | 2015-10-28 | 惠州市德赛视听科技有限公司 | High definition player |
| CN102932683A (en) * | 2012-10-26 | 2013-02-13 | 深圳Tcl新技术有限公司 | Mobile high-definition link (MHL) realizing method and video playing device |
| CN105868130A (en) * | 2015-12-08 | 2016-08-17 | 乐视移动智能信息技术（北京）有限公司 | Method and mobile terminal for controlling interface application program |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20141027 |
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| EXPY | Termination of patent right or utility model |