CN203279031U - MHL-HDMI converting and receiving unit and television with same - Google Patents
MHL-HDMI converting and receiving unit and television with same Download PDFInfo
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- CN203279031U CN203279031U CN 201220712814 CN201220712814U CN203279031U CN 203279031 U CN203279031 U CN 203279031U CN 201220712814 CN201220712814 CN 201220712814 CN 201220712814 U CN201220712814 U CN 201220712814U CN 203279031 U CN203279031 U CN 203279031U
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Abstract
The utility model provides an MHL-HDMI converting and receiving unit and a television with the same. The MHL-HDMI converting and receiving unit comprises an MHL/HDMI multi-use interface; a HDMI interface; an audio and video format identification unit which is connected with the MHL/HDMI multi-use interface and used for identifying whether audio and video information received by the MHL/HDMI multi-use interface is an MHL interface protocol; and an MHL-HDMI double channel bridging unit which is respectively connected with the MHL/HDMI multi-use interface, the HDMI interface and the audio and video format identification unit, and used for converting the audio and video information received by the MHL/HDMI multi-use interface to an HDMI interface protocol and transmitting via the HDMI interface, and converting a control instruction received by the HDMI interface to an MHL interface protocol and transmitting via the MHL/HDMI multi-use interface. The MHL-HDMI converting and receiving unit identifies formats of audio and video information automatically and transmits the audio and video information to the television; and a remote controller of the television can access and operate external connection devices.
Description
Technical field
The utility model relates to the data conversion technique field, particularly a kind of MHL-HDMI adapter unit and the television set that comprises this unit.
Background technology
Present television product function is more and more, and not only network enabled is watched audio/video program online, can shopping online etc., and can also download games, game on-line.In addition, some intelligent TV sets can arbitrarily download and install application as mobile phone, support mouse control, Sound control or gesture control operation.
Existing solution comprises: the external equipment (for example smart mobile phone or PAD) that will have network function is received on television set, allows television set just serve as display.But because smart mobile phone or PAD and television set are two equipment fully independently, such expanded function mode certainly exists deficiency: smart mobile phone or PAD need power supply separately, cause waste of energy; Both need to control separately, mobile phone or PAD still need to control by touch-screen, and the used as television remote controller is controlled, inconvenient operation when causing the user to use.
The utility model content
In view of this, main purpose of the present utility model is, the television set that a kind of MHL-HDMI adapter unit is provided and comprises this unit, automatically identify institute's transmission tone video information form of external equipment, audio/video information is sent to television set, also can realizes with TV remote controller access and operation external equipment.
MHL-HDMI adapter unit provided by the utility model comprises:
The MHL/HDMI multiplex interface;
The HDMI interface;
Audio frequency and video format identification unit is connected with the MHL/HDMI multiplex interface, and whether the audio/video information that is used for the reception of identification MHL/HDMI multiplex interface adopts the MHL interface protocol;
MHL-HDMI two-way bridge-jointing unit, be connected respectively with MHL/HDMI multiplex interface, HDMI interface and audio frequency and video format identification unit, be used for when the described audio/video information of audio frequency and video format identification unit identification adopts the MHL interface protocol, export by the HDMI interface after being converted to by the audio/video information that the MHL/HDMI multiplex interface receives the HDMI interface protocol, and export by the MHL/HDMI multiplex interface after being converted to by the control command that the HDMI interface receives the MHL interface protocol
By upper, the MHL-HDMI adapter unit can be identified institute's transmission tone video information form of external equipment automatically, and audio/video information is sent to television set, also can realize with TV remote controller access and operation external equipment.
Optionally, described audio frequency and video format identification unit is connected with the display data transmissions port of described MHL/HDMI multiplex interface, is used for according to this port level described employing MHL of identification or HDMI interface protocol; With
When described employing MHL interface protocol, the control command transmit port of described HDMI interface and the control command transmit port of described MHL/HDMI multiplex interface are for being used for exporting the port of described control command.
Optionally, also comprise a power switch unit that is connected with feeder ear,
Described MHL-HDMI two-way bridge-jointing unit also is connected with power switch unit, also be used for obtaining from power switch unit the power supply output port that power supply is communicated to the MHL/HDMI multiplex interface when the described audio/video information of audio frequency and video format identification unit identification adopts the MHL interface protocol.
Optionally, described power switch unit is to comprise that model is the circuit of G547G2TB chip, and the enable port of G547G2TB chip is connected with described MHL-HDMI two-way bridge-jointing unit, and the power supply output port is connected with external equipment 10;
By upper, also can realize by described MHL-HDMI adapter unit to charging external equipment.
Optionally, the described audio frequency and video format identification unit circuit that draws power supply and resistance to be composed in series on serving as reasons;
Between the display data transmissions port of described MHL/HDMI multiplex interface and level output end mouth, pull-up resistor is set;
The described level output end mouth of MHL/HDMI multiplex interface is the corresponding output of difference high-low level when adopting MHL or HDMI interface protocol.
Optionally, described MHL-HDMI two-way bridge-jointing unit is to comprise that model is the circuit of Msg1201 chip.
In addition, the utility model also provides a kind of television set, comprises above-mentioned MHL-HDMI adapter unit;
The HDMI interface of described MHL-HDMI adapter unit is connected with the outside HDMI interface of television set, and the audio/video decoding unit of the HDMI interface of described MHL-HDMI adapter unit and television set is connected;
Described power switch unit is connected with the feeder ear of television set power supply unit.
By upper, this television set is identified institute's transmission tone video information form of external equipment automatically, and carries out simultaneous display, also can realize with TV remote controller access and operation external equipment, and to external power devices.
Description of drawings
Fig. 1 is the operation principle schematic diagram of MHL-HDMI adapter unit in the first embodiment;
Fig. 2 is the circuit theory diagrams of signal recognition unit;
Fig. 3 is the circuit theory diagrams of MHL-HDMI two-way bridge-jointing unit;
Fig. 4 is the circuit theory diagrams of power switch unit;
Fig. 5 is the operation principle schematic diagram of television set and external equipment in the second embodiment.
Embodiment
With reference to the accompanying drawings the embodiment of MHL-HDMI adapter unit 20 described in the utility model is described in detail.The first embodiment as shown in Figure 1, MHL-HDMI adapter unit 20 connects external equipment 10 and television sets 30, and the audio/video information synchronous damage-free in external equipment 10 is transferred to television set 30.In addition, the control command of the MHL-HDMI adapter unit 20 control external equipment 10 that also can send to external equipment 10 power supply and TV transmission set remote-controller.
Wherein, external equipment 10 is smart mobile phone, digital camera or the PAD etc. with mobile terminal high-definition audio and video standard interface (MHL, Mobile High-Definition Link).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
MHL-HDMI adapter unit 20 is used for to the audio/video information of television set 30 transmission external equipments 10, and the control command information of sending to external equipment 10 power supplies and TV transmission set remote-controller.
Described MHL-HDMI adapter unit 20 is connected with external equipment 10 by the MHL/HDMI multiplex interface, inside comprises successively MHL/HDMI multiplex interface, audio frequency and video format identification unit 201 and the MHL-HDMI two-way bridge-jointing unit 203 that connects, and also comprises with audio frequency and video format identification unit 201 being connected the power switch unit 202 that is connected respectively with MHL-HDMI two-way bridge-jointing unit.
Described audio frequency and video format identification unit 201 is used for the form of 10 transmission tone video informations of identification external equipment, namely identifies the interface protocol that this audio/video information adopts, and the corresponding high-low level that generates expression different audio-video form.
The circuit theory diagrams of audio frequency and video format identification unit 201 as shown in Figure 2, wherein testing circuit is connected with the display data transmissions port (DDC CLK) of MHL/HDMI multiplex interface, testing circuit comprises the resistance (R1, R4) that draws power supply and series connection with it on 5V, and described resistance (R1, R4) also is connected with described display data transmissions port.MHL/HDMI multiplex interface inside is provided with the pull-up resistor that resistance is 3.3K (not shown), this pull-up resistor connects display data transmissions port and level output end mouth (D2 Shield), external equipment 10 is connected with MHL-HDMI adapter unit 20 by the MHL/HDMI multiplex interface, when exporting the audio/video information of MHL interface protocol, described level output end mouth produces high level; Otherwise when external equipment 10 was exported the audio/video information of HDMI interface protocols, the level output end mouth produced low level.Described high-low level by the RC circuit transmission in parallel that is connected with the level output end mouth to hereinafter described MHL-HDMI two-way bridge-jointing unit 203.
MHL-HDMI two-way bridge-jointing unit 203 is converted to the audio/video information of HDMI interface protocol for the audio/video information that adopts the MHL interface protocol, and export television set 30 to by the audio video transmission port of HDMI interface, or the audio video transmission port repeat of the audio/video information that directly will adopt the HDMI interface protocol by the HDMI interface exports television set 30 to.
MHL-HDMI two-way bridge-jointing unit 203 inside comprise control module, and the connected MHL-HDMI protocol conversion module of difference and control command protocol conversion module (all not shown).Described control module is used for controlling the work schedule of MHL-HDMI protocol conversion module and control command protocol conversion module.
Specifically, the high-low level of the audio/video information form of the expression external equipment 10 that control module reception audio frequency and video format identification unit 201 detects and the audio/video information that the MHL/HDMI multiplex interface transmits, when institute is received as high level, represent that this audio/video information form is MHL, control module control MHL-HDMI protocol conversion module will adopt the audio/video information of MHL interface protocol to be converted to the HDMI interface protocol, export television set 30 to by the HDMI interface; If when institute was received as low level, the form that represents this audio/video information was HDMI, control module is controlled the MHL-HDMI protocol conversion module and is directly exported the audio/video information of HDMI interface protocol to television set 30 by the HDMI interface.
In addition, described control module is exported different control informations to power switch unit 202 according to the high-low level that receives.Specifically, when control module is received as high level, output low level; When otherwise institute is received as low level, the output high level.
In addition, described control module also exports by the control command transmit port reception television set 30 of HDMI interface the control command information of passing through DDC bus, CEC bus, the control command protocol conversion module carries out protocol conversion process with above-mentioned control command information, control command transmit port output by the MHL/HDMI multiplex interface exports external equipment 10 to by the C-BUS control bus.
As shown in Figure 3, in the present embodiment, the function that MHL-HDMI two-way bridge-jointing unit 203 is realized can be the circuit realization of Msg1201 chip by comprising model.
After television set 30 passes through MHL-HDMI adapter unit 20 and external equipment 10 is connected, synchronously play the audio-video frequency content in external equipment 10.
Described television set 30 comprises: the HDMI interface, comprise 19 road ports, and be used for the output control information comprising 12 tunnel audio/video informations, 3 tunnel that are used for receiving the HDMI form.
The audio/video decoding unit is connected with the HDMI interface, for processing that the audio/video information of HDMI form is decoded, to export display and loud speaker to.
Wireless transmit/receive units is used for carrying out the transmission of wireless data with TV remote controller.Can adopt the RF Transmit-Receive Unit of standard.
Main control unit, be connected with the HDMI interface with wireless transmit/receive units, audio/video decoding unit respectively, control object according to the current interface judgement TV remote controller of television set, for example television set is current when being the TV interface, 30 playing audio-videos of television set are for to demodulate audio-video signal by TV tuner (not shown), this moment TV remote controller control object be television set 30, export the audio/video decoding unit after main control unit is identified control command to; And television set is current when being the HDMI interface, control object is external equipment 10, main control unit identifies TV remote controller and controls the corresponding control command code value of button, and above-mentioned code value is carried out exporting MHL-HDMI adapter unit 20 to by the HDMI interface after protocol conversion.For instance, TV remote controller control upper and lower, left and right in button, F.F.+, rewind down-, determine, return eight corresponding code values of button and be respectively 0x01,0x02,0x03,0x04,0x49,0x48,0x00,0x0D.
In addition, as shown in Figure 5, the utility model also provides the second embodiment, the difference of the second embodiment and the first embodiment is: MHL-HDMI adapter unit 20 is integrated in inside television, power switch unit 202 in MHL-HDMI adapter unit 20 is connected with power supply unit in television set 30, receives the 5V power supply.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
For example, MHL-HDMI adapter unit 20 provided by the utility model is the switching that one road MHL input is exported one road HDMI, in addition, also can be set to multichannel MHL input to one road HDMI output.
Claims (7)
1. a MHL-HDMI adapter unit, is characterized in that, comprising:
The MHL/HDMI multiplex interface;
The HDMI interface;
Whether the audio/video information that is used for the reception of identification MHL/HDMI multiplex interface adopts the audio frequency and video format identification unit (201) of MHL interface protocol, is connected with the MHL/HDMI multiplex interface;
MHL-HDMI two-way bridge-jointing unit (203), be connected 201 with MHL/HDMI multiplex interface, HDMI interface with audio frequency and video format identification unit) be connected respectively, export by the HDMI interface after being used for to be converted to by the audio/video information that the MHL/HDMI multiplex interface receives the HDMI interface protocol, and export by the MHL/HDMI multiplex interface after being converted to by the control command that the HDMI interface receives the MHL interface protocol.
2. MHL-HDMI adapter unit according to claim 1, it is characterized in that, described audio frequency and video format identification unit (201) is connected with the display data transmissions port of described MHL/HDMI multiplex interface, is used for according to this port level described employing MHL of identification or HDMI interface protocol; With
When being the MHL interface protocol, the control command transmit port of described HDMI interface and the control command transmit port of described MHL/HDMI multiplex interface are for being used for exporting the port of described control command.
3. MHL-HDMI adapter unit according to claim 2, is characterized in that,
Also comprise a power switch unit that is connected with feeder ear (202),
Described MHL-HDMI two-way bridge-jointing unit (203) also is connected with power switch unit (202), also be used for obtaining from power switch unit (202) the power supply output port that power supply is communicated to the MHL/HDMI multiplex interface when audio/video information adopts the MHL interface protocol.
4. MHL-HDMI adapter unit according to claim 3, it is characterized in that, described power switch unit (202) is to comprise that model is the circuit of G547G2TB chip, and the enable port of G547G2TB chip is connected with described MHL-HDMI two-way bridge-jointing unit (203).
5. MHL-HDMI adapter unit according to claim 2, is characterized in that, the circuit that described audio frequency and video format identification unit (201) draws power supply and resistance to be composed in series on being;
Between the display data transmissions port of described MHL/HDMI multiplex interface and level output end mouth, pull-up resistor is set;
The described level output end mouth of MHL/HDMI multiplex interface is the corresponding output of difference high-low level when adopting MHL or HDMI interface protocol.
6. MHL-HDMI adapter unit according to claim 1, is characterized in that, described MHL-HDMI two-way bridge-jointing unit (203) is to comprise that model is the circuit of Msg1201 chip.
7. a television set, is characterized in that, comprises arbitrary described MHL-HDMI adapter unit in the claims 3,4;
The MHL/HDMI multiplex interface of described MHL-HDMI adapter unit is connected with the outside HDMI interface of television set, and the audio/video decoding unit of the HDMI interface of described MHL-HDMI adapter unit and television set is connected;
Described power switch unit (202) is connected with the feeder ear of television set power supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712814 CN203279031U (en) | 2012-12-21 | 2012-12-21 | MHL-HDMI converting and receiving unit and television with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712814 CN203279031U (en) | 2012-12-21 | 2012-12-21 | MHL-HDMI converting and receiving unit and television with same |
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| Publication Number | Publication Date |
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| CN203279031U true CN203279031U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220712814 Expired - Fee Related CN203279031U (en) | 2012-12-21 | 2012-12-21 | MHL-HDMI converting and receiving unit and television with same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763595A (en) * | 2013-12-24 | 2014-04-30 | 康佳集团股份有限公司 | Remote control video game terminal system based on MHL |
| CN105975414A (en) * | 2015-10-26 | 2016-09-28 | 乐视移动智能信息技术（北京）有限公司 | Method and device for controlling mobile terminal |
| CN108205512A (en) * | 2016-12-16 | 2018-06-26 | 佛山市顺德区顺达电脑厂有限公司 | High-definition multimedia interface device and its control method |
| CN109473081A (en) * | 2018-10-17 | 2019-03-15 | 歌尔科技有限公司 | A kind of interface circuit, display methods and display equipment |
-
2012
- 2012-12-21 CN CN 201220712814 patent/CN203279031U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763595A (en) * | 2013-12-24 | 2014-04-30 | 康佳集团股份有限公司 | Remote control video game terminal system based on MHL |
| CN103763595B (en) * | 2013-12-24 | 2018-03-20 | 康佳集团股份有限公司 | A kind of RTV remote television game terminal system based on MHL |
| CN105975414A (en) * | 2015-10-26 | 2016-09-28 | 乐视移动智能信息技术（北京）有限公司 | Method and device for controlling mobile terminal |
| CN108205512A (en) * | 2016-12-16 | 2018-06-26 | 佛山市顺德区顺达电脑厂有限公司 | High-definition multimedia interface device and its control method |
| CN109473081A (en) * | 2018-10-17 | 2019-03-15 | 歌尔科技有限公司 | A kind of interface circuit, display methods and display equipment |
| CN109473081B (en) * | 2018-10-17 | 2023-11-21 | 歌尔科技有限公司 | Interface circuit, display method and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 266101 Haier Information Park, 1 Haier Road, hi tech park, Laoshan District, Qingdao, Shandong Patentee after: Qingdao Haier Electric Appliance Co., Ltd. Patentee after: haier group corporation Patentee after: QINGDAO HAIER MULTI-MEDIA CO., LTD. Address before: 266101 Haier Information Park, 1 Haier Road, hi tech park, Laoshan District, Qingdao, Shandong Patentee before: Qingdao Haier Electric Appliance Co., Ltd. Patentee before: haier group corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20201221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |