CN202939969U - Decoding circuit suitable for vehicle-mounted audio and video circuit - Google Patents
Decoding circuit suitable for vehicle-mounted audio and video circuit Download PDFInfo
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- CN202939969U CN202939969U CN 201220694978 CN201220694978U CN202939969U CN 202939969 U CN202939969 U CN 202939969U CN 201220694978 CN201220694978 CN 201220694978 CN 201220694978 U CN201220694978 U CN 201220694978U CN 202939969 U CN202939969 U CN 202939969U
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Abstract
The utility model relates to a decoding circuit suitable for a vehicle-mounted audio and video circuit. The decoding circuit comprises an audio and video decoding module, an audio and video signal switching circuit and a communication conversion circuit, wherein the audio and video decoding module is connected with an IPOD/IPHONE interface circuit, a USB interface circuit and a SD/TF card interface circuit; the audio and video signal switching circuit is suitable for switching audio and video signals output by the vehicle-mounted audio and video circuit and the audio and video signals output by the audio and video decoding module and the switched audio and video signals are transmitted to an audio and video signal input terminal of a vehicle-mounted master control circuit; the communication conversion circuit is connected with a communication interface of the vehicle-mounted master control circuit and the communication interface of the vehicle-mounted audio and video circuit respectively and is suitable for the following condition that the vehicle-mounted master control circuit switches and controls the vehicle-mounted audio and video circuit and the decoding circuit. By using the circuit of the utility model, under the condition that an original function of a vehicle-mounted system is not lost, expansion is performed on the system so that the vehicle-mounted system enriches the interfaces.
Description
Technical field
This practicality relates to a kind of decoding circuit that is applicable to vehicle-mounted audio frequency and video circuit
Background technology
Now automobile progresses into daily life, and function is not as just walking-replacing tool, and people can select to play music and alleviate fatigue in the driving process in the process of driving, and can also play corresponding video to satisfy passenger's needs; But in existing vehicle, often adopt the form of the CDs such as CD, DVD to realize, namely the sound of CD-ROM drive element circuit, look signal output interface and CD-ROM drive communication interface respectively with the sound of vehicle-mounted governor circuit, look signal input interface and be connected with communication interface; Universal along with USB, SD/TF card, IPOD/IPHONE, only with the form of CD can't satisfy people's needs, so for not with the vehicle-mounted original-pack sound equipment of USB, SD card interface, need to develop a kind of decoding circuit, on the basis that does not affect original onboard system function, realize that USB, SD/TF card, IPOD/IPHONE access playing function, reach the vehicle-mounted governor circuit slitless connection with former car, such as bearing circle selection, the original push-botton operation of sound equipment, car running computer demonstration, screen display and operation etc.
The utility model content
The technical problems to be solved in the utility model is to provide and a kind ofly is applicable to connect peripheral hardware with the decoding circuit of the vehicle-mounted audio frequency and video circuit of playing sound, video.
In order to solve the problems of the technologies described above, the utility model provides a kind of decoding circuit that is applicable to vehicle-mounted audio frequency and video circuit, it is characterized in that comprising:
Audio/video decoding module, described audio/video decoding module are connected with IPOD/IPHONE interface circuit, usb circuit, SD/TF card interface circuit respectively; Sound, vision signal commutation circuit, described sound, vision signal commutation circuit are suitable for switching the sound, vision signal of vehicle-mounted sound, video circuit output and sound, the vision signal of described audio/video decoding module output, and the sound after switching, video signal transmission extremely sound, the video signal input terminal of vehicle-mounted governor circuit; Communication switching circuit, described communication switching circuit are connected with the communication interface of described vehicle-mounted governor circuit respectively and are connected with the communication interface of vehicle-mounted sound, video circuit, are suitable for by the vehicle-mounted sound of described vehicle-mounted governor circuit switching controls, video circuit and decoding circuit.
Further, in order to facilitate the connection of wireless device, this decoding circuit also comprises: be suitable for receiving the radio receiver of the audio-video signal of wireless device, this radio receiver is connected with described audio/video decoding module.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) this novel can expansion system on the basis of not losing the onboard system original function, make onboard system enrich interface; (2) by the connection of communication interface, make decoding circuit and former truck system seamless link, namely utilize former truck system to carry out corresponding control to this decoding circuit; (3) add radio receiver, made connected mode abundanter, utilized the wifi function of mobile phone just can carry out the broadcast of media; (4) this decoding circuit is simple in structure, and extendability is strong.
Description of drawings
For content of the present utility model is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is the electrical block diagram of the decoding circuit of vehicle-mounted audio frequency and video circuit of the present utility model;
Fig. 2 is the connection diagram of circuit of the decoding circuit of vehicle-mounted audio frequency and video circuit of the present utility model.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
See Fig. 1,2, the decoding circuit that is applicable to vehicle-mounted audio frequency and video circuit of the present embodiment comprises: audio/video decoding module, described audio/video decoding module are connected with IPOD/IPHONE interface circuit, usb circuit, SD/TF card interface circuit respectively; Sound, vision signal commutation circuit, described sound, vision signal commutation circuit are suitable for switching the sound, vision signal of vehicle-mounted sound, video circuit output and sound, the vision signal of described audio/video decoding module output, and the sound after switching, video signal transmission extremely sound, the video signal input terminal of vehicle-mounted governor circuit; Communication switching circuit, described communication switching circuit are connected with the communication interface of described vehicle-mounted governor circuit and the communication interface of vehicle-mounted sound, video circuit respectively, are suitable for by the vehicle-mounted sound of described vehicle-mounted governor circuit switching controls, video circuit and decoding circuit.
IPOD is a kind of large capacity MP3 player that APPLE releases, and IPHONE is the Mobile phone that APPLE releases, and corresponding data-interface is both arranged.
Make described decoding circuit to carry out corresponding control by the control system of former car by described communication switching circuit, and do not affect original vehicle-mounted sound, video circuit.
Described vehicle-mounted sound, video circuit are the disc-playing systems such as the DVD of former car or CD, perhaps other similar multimedia play systems.
Described audio/video decoding module can adopt the processors such as arm to complete.
Described vehicle-mounted governor circuit comprises: the circuit such as former car power supply, power amplifier, audio frequency and video DAC, control, demonstration, communication.
The decoding circuit of vehicle-mounted audio frequency and video circuit also comprises: be suitable for receiving the radio receiver of the audio-video signal of wireless device, this radio receiver is connected with described audio/video decoding module.
Described radio receiver can adopt the wifi receiving trap, can be connected with wireless devices such as mobile phone, notebooks, plays corresponding audio-video document.
Obviously, above-described embodiment is only for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that spirit of the present utility model extended out and still are among protection domain of the present utility model.
Claims (2)
1. decoding circuit that is applicable to vehicle-mounted audio frequency and video circuit is characterized in that comprising:
The audio/video decoding module, it is connected with IPOD/IPHONE interface circuit, usb circuit, SD/TF card interface circuit respectively;
Sound, vision signal commutation circuit, it is suitable for switching the sound, vision signal of vehicle-mounted sound, video circuit output and sound, the vision signal of described audio/video decoding module output, and the sound after switching, video signal transmission extremely sound, the video signal input terminal of vehicle-mounted governor circuit;
Communication switching circuit, it is connected with the communication interface of described vehicle-mounted governor circuit and the communication interface of vehicle-mounted sound, video circuit respectively, is suitable for by the vehicle-mounted sound of described vehicle-mounted governor circuit switching controls, video circuit and decoding circuit.
2. the decoding circuit that is applicable to vehicle-mounted audio frequency and video circuit according to claim 1 characterized by further comprising: be suitable for receiving the radio receiver of the audio-video signal of wireless device, this radio receiver is connected with described audio/video decoding module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220694978 CN202939969U (en) | 2012-12-12 | 2012-12-12 | Decoding circuit suitable for vehicle-mounted audio and video circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220694978 CN202939969U (en) | 2012-12-12 | 2012-12-12 | Decoding circuit suitable for vehicle-mounted audio and video circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939969U true CN202939969U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220694978 Expired - Fee Related CN202939969U (en) | 2012-12-12 | 2012-12-12 | Decoding circuit suitable for vehicle-mounted audio and video circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939969U (en) |
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2012
- 2012-12-12 CN CN 201220694978 patent/CN202939969U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20151212 |