CN203057337U - Video receiving end - Google Patents
Video receiving end Download PDFInfo
- Publication number
- CN203057337U CN203057337U CN 201220749732 CN201220749732U CN203057337U CN 203057337 U CN203057337 U CN 203057337U CN 201220749732 CN201220749732 CN 201220749732 CN 201220749732 U CN201220749732 U CN 201220749732U CN 203057337 U CN203057337 U CN 203057337U
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- hdmi
- mhl
- interface
- power
- rechargeable battery
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- Expired - Lifetime
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- 230000006978 adaptation Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 8
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides a video receiving end, comprising an MHL-HDMI commutator and a power supply module, wherein the MHL-HDMI commutator comprises an MHL-HDMI multiplexing interface and an HDMI interface. A power supply port of the MHL-HDMI multiplexing interface is connected with a power supply port of the HDMI interface. The power supply module supplies electricity for the power supply port of the HDMI interface and comprises a rechargeable battery, a power-supply adaption circuit and a boost circuit, wherein the power-supply adaption circuit is respectively connected with the power supply port of the HDMI interface and the rechargeable battery and is used for respectively converting external voltage to standard voltage of the power supply port of the HDMI interface and voltage charging for the rechargeable battery, and the boost circuit is respectively connected with the rechargeable battery and the power supply port of the HDMI interface and is used for converting voltage output by the rechargeable battery to the standard voltage of the power supply port of the HDMI interface. Whether the video receiving end is turned on, reverse power supply to a video transmitting end can be performed.
Description
Technical field
The utility model relates to a kind of video receiver.
Background technology
Mobile high definition connects (MHL, Mobile High-Definition Link) interface is that U.S.'s crystalline substance is as the audio-visual standard interface that is used for connecting portable consumer electronic device of company's research and development, no matter be video sending end such as mobile phone, digital camera, digital camera, all can be by existing standard HDMI interface or Micro USB interface, the quality digital high resolution audio and video information of 1080p resolution is directly transferred on the video receiver, and do not damage the high-resolution effect of film.Yet, support the video sending end of MHL interface to have the not long problem of stand-by time at present, in the prior art, when video receiver is connected with external power source, can directly oppositely power to video sending end, yet when video receiver and external power source cut-out, can't power to video sending end again.
The utility model content
For addressing the above problem, the utility model provides a kind of video receiver, and no matter whether this video receiver is opened, and all can oppositely power to video sending end.
The utility model provides a kind of video receiver, comprises that MHL-HDMI adapter, described MHL-HDMI adapter comprise MHL/HDMI multiplex interface and HDMI interface, and the power port of described MHL/HDMI multiplex interface is connected with the power port of HDMI interface; Also be included as the power module of the power port power supply of HDMI interface,
Described power module comprises:
Rechargeable battery;
Power adapter circuit is connected respectively with rechargeable battery with the power port of HDMI interface, is used for the voltage that external voltage is converted to the power port normal voltage of HDMI interface respectively and charges for rechargeable battery; With
Booster circuit is connected respectively with the power port of rechargeable battery with the HDMI interface, and the voltage transitions that is used for rechargeable battery output is the normal voltage of the power port of HDMI interface.
By last, no matter whether this video receiver is opened, and all can oppositely power to video sending end, and when video receiver was normally opened, power adapter circuit directly carried out external voltage adaptive back and exported by the MHL-HDMI adapter; When video receiver is closed, can outwards export power supply by rechargeable battery in addition.
Optionally, described MHL-HDMI adapter comprises:
MHL-HDMI two-way bridge-jointing unit is connected with the HDMI interface with the MHL/HDMI multiplex interface respectively;
The power adaptation unit, be connected with MHL-HDMI two-way bridge-jointing unit with the power port of MHL/HDMI multiplex interface, the power port of HDMI interface respectively, being used for the voltage transmission of the power port of HDMI interface is the operating voltage of MHL-HDMI two-way bridge-jointing unit to the power port of MHL/HDMI multiplex interface with the voltage transitions of the power port of HDMI interface.
Preferable, also comprise between described power adapter circuit and the rechargeable battery: charge management circuit is used for the voltage of the described charging of control and/or stablizing of electric current.
Optionally, described charge management circuit is to comprise that model is the circuit of CN3066, PT4056 or PX40 chip.
By last, charge management circuit can be realized to rechargeable battery powered safety.
Optionally, described rechargeable battery is lithium battery, and capacity is at least 5000mAh.
Description of drawings
Fig. 1 is the principle schematic of the utility model MHL-HDMI electric power system;
Fig. 2 is the principle schematic of the utility model MHL-HDMI adapter;
Fig. 3 is the principle schematic of the utility model video receiver middle pitch video processing unit.
Embodiment
The utility model embodiment provides a kind of MHL-HDMI electric power system, as shown in Figure 1, in the time of described video receiver 20 receives and display video transmitting terminal 10 sends high resolution audio and video information, to video sending end 10 power supplies, breaking video sending end 10 thus must be by the limitation of power supply adaptor power supply.In the present embodiment, video sending end 10 comprises smart mobile phone, PAD or digital camera (Digital Video) etc. for having the multimedia equipment of MHL/HDMI multiplex interface.Video receiver 20 is for having television set or the display of corresponding MHL/HDMI multiplex interface, and following embodiment is smart mobile phone with video sending end 10, and video receiver 20 is that example describes for television set.
The MHL interface is a kind of new interface, comprises 5 ports, with micro USB interface general connector.In addition, the MHL interface also can be used standard HDMI interface, multiplexing wherein 5 ports.The corresponding relation of Micro USB interface, HDMI interface and MHL interface is as shown in table 1 below.In the MHL interface, 4 ports are used for transmission of audio and video information, and another port is the control command transmit port, by the control information of CBUS bus transmitted in both directions.
Table 1
The audio/video information that video receiver 20 is used for receiving and display video transmitting terminal 10 sends, and to video sending end 10 output 5V supply power voltages.Described video receiver 20 comprises interconnective MHL-HDMI adapter 201 and audio frequency and video processing unit 202, the loud speaker 203 that is connected with audio frequency and video processing unit 202 and display 204, and to the power module 205 of said apparatus power supply.
MHL-HDMI adapter 201 is used for video sending end 10 output audio/video informations are carried out being sent to audio frequency and video processing unit 202 after the protocol conversion.As shown in Figure 2, MHL-HDMI adapter 201 inside comprise MHL/HDMI multiplex interface, MHL-HDMI two-way bridge-jointing unit 2011 and the HDMI interface that connects successively, also comprise the power adaptation unit 2012 that is connected with MHL-HDMI two-way bridge-jointing unit 2011.
MHL-HDMI two-way bridge-jointing unit 2011 is used for carrying out protocol conversion according to the interface protocol of the high resolution audio and video information that receives.Specifically, when the high resolution audio and video information of being received as MHL interface protocol, MHL-HDMI two-way bridge-jointing unit 2011 is the HDMI interface protocol with this high resolution audio and video information translation, and the audio frequency and video transmit port output by the HDMI interface; When the high resolution audio and video information of being received as HDMI interface protocol, MHL-HDMI two-way bridge-jointing unit 2011 is directly with the audio frequency and video transmit port output by the HDMI interface of the high resolution audio and video information of HDMI interface protocol.The function of described MHL-HDMI two-way bridge-jointing unit 2011 can be the circuit realization of SiI1292 chip by comprising model.
The 5V voltage that power adaptation unit 2012 receives for the power port with described HDMI interface carries out adaptive, reduces to 1.2V voltage, and to 2011 power supplies of MHL-HDMI two-way bridge-jointing unit.In addition, described power adaptation unit 2012 also is used for the 5V voltage that the power port with described HDMI interface receives and directly exports video sending end 10 to by the power port of MHL/HDMI multiplex interface.Described 5V voltage will be narrated later by power module 205 outputs.In addition, the power port of described HDMI interface also can directly be connected with the power port of MHL/HDMI multiplex interface.
The principle schematic of having shown audio frequency and video processing unit 202 as Fig. 3, comprise: master chip 2021, the HDMI interface that is connected with master chip 2021, demodulator 2022, audio coding module 2023 and video encoding module 2024, also comprise the TV port that is connected with demodulator 2022, the audio output port that is connected with audio coding module 2023 and the video-out port that is connected with video encoding module 2024.
Wherein, TV signal is by the input of TV port, and demodulator 2022 is used for that the TV signal that receives is carried out encoding and decoding to be handled, and generates the TS transport stream, exports master chip 2021 to.It is the chip of ATBM884x that demodulator 2022 can adopt model.
Described power module 205 inside comprise the power adapter circuit that connects successively, charge management circuit, rechargeable battery and booster circuit.
Wherein, power adapter circuit is connected with external power source, is used for external power source is carried out adaptation processing, and step-down is the supply power voltage (5V) of video receiver 20 inner each unit and the charging voltage (4.2V) of rechargeable battery.In addition, the 5V output of described power adapter circuit also is connected with the power port of HDMI interface in the MHL-HDMI adapter 201, output 5V voltage.
Described charge management circuit is connected between power adapter circuit and the rechargeable battery, be used for control to voltage and/or the current constant of rechargeable battery charging, the function of described charge management circuit can be the circuit realization of CN3066, PT4056 or PX40 chip by comprising model.
Described booster circuit is used for the voltage that rechargeable battery the is exported processing of boosting is risen to 5V.The 5V output of described booster circuit is connected with the power port of HDMI interface in the MHL-HDMI adapter 201, output 5V voltage.
Preferable, described rechargeable battery is lithium battery, capacity is at least 5000mAh.
When video receiver 20 operate as normal, the power adapter circuit in the power module 205 carries out adaptive back with external power source powers to each unit in the video receiver 20, simultaneously 5V voltage is exported by MHL-HDMI adapter 201.In addition, the rechargeable battery in the power module 205 is connected with 4.2V output in the power adapter circuit, charges.Thus, when video receiver 20 is closed, cut off with after external power source is connected, power module 205 is exportable power supply still, and described supply current passes through MHL-HDMI adapter 201 and powers to video sending end 10.
The above only is preferred embodiment of the present utility model; not in order to limit the range of application of the utility model in all kinds of motors; in a word; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. a video receiver is characterized in that, comprises that MHL-HDMI adapter, described MHL-HDMI adapter comprise MHL/HDMI multiplex interface and HDMI interface, and the power port of described MHL/HDMI multiplex interface is connected with the power port of HDMI interface; Also be included as the power module of the power port power supply of HDMI interface,
Described power module comprises:
Rechargeable battery;
Power adapter circuit is connected respectively with rechargeable battery with the power port of HDMI interface, is used for the voltage that external voltage is converted to the power port normal voltage of HDMI interface respectively and charges for rechargeable battery; With
Booster circuit is connected respectively with the power port of rechargeable battery with the HDMI interface, and the voltage transitions that is used for rechargeable battery output is the normal voltage of the power port of HDMI interface.
2. video receiver according to claim 1 is characterized in that, described MHL-HDMI adapter comprises:
MHL-HDMI two-way bridge-jointing unit is connected with the HDMI interface with the MHL/HDMI multiplex interface respectively;
The power adaptation unit, be connected with MHL-HDMI two-way bridge-jointing unit with the power port of MHL/HDMI multiplex interface, the power port of HDMI interface respectively, being used for the voltage transmission of the power port of HDMI interface is the operating voltage of MHL-HDMI two-way bridge-jointing unit to the power port of MHL/HDMI multiplex interface with the voltage transitions of the power port of HDMI interface.
3. video receiver according to claim 1 is characterized in that, also comprises between described power adapter circuit and the rechargeable battery: charge management circuit is used for the voltage of the described charging of control and/or stablizing of electric current.
4. video receiver according to claim 3 is characterized in that, described charge management circuit is to comprise that model is the circuit of CN3066, PT4056 or PX40 chip.
5. video receiver according to claim 1 is characterized in that, described rechargeable battery is lithium battery, and capacity is at least 5000mAh.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220749732 CN203057337U (en) | 2012-12-29 | 2012-12-29 | Video receiving end |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220749732 CN203057337U (en) | 2012-12-29 | 2012-12-29 | Video receiving end |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203057337U true CN203057337U (en) | 2013-07-10 |
Family
ID=48740250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201220749732 Expired - Lifetime CN203057337U (en) | 2012-12-29 | 2012-12-29 | Video receiving end |
Country Status (1)
Country | Link |
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CN (1) | CN203057337U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106463097A (en) * | 2014-06-19 | 2017-02-22 | 谷歌公司 | Method for producing a printed circuit board with an embedded sensor chip, and printed circuit board |
-
2012
- 2012-12-29 CN CN 201220749732 patent/CN203057337U/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106463097A (en) * | 2014-06-19 | 2017-02-22 | 谷歌公司 | Method for producing a printed circuit board with an embedded sensor chip, and printed circuit board |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20130710 |