CN206878977U - A kind of audio frequency and video piece-rate system based on HDMI input interfaces - Google Patents
A kind of audio frequency and video piece-rate system based on HDMI input interfaces Download PDFInfo
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- CN206878977U CN206878977U CN201720799690.0U CN201720799690U CN206878977U CN 206878977 U CN206878977 U CN 206878977U CN 201720799690 U CN201720799690 U CN 201720799690U CN 206878977 U CN206878977 U CN 206878977U
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Abstract
The utility model provides a kind of audio frequency and video piece-rate system based on HDMI input interfaces, including audio frequency and video separating chips, the audio frequency and video separating chips are provided with HDMI, and audio-video source to be separated is sent to audio frequency and video separating chips by PC by HDMI buses and the HDMI；The audio isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by D/A change-over circuits；The video isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by A/D change-over circuits.Audio frequency and video piece-rate system described in the utility model based on HDMI input interfaces can input high-resolution vision signal；Input wire rod is reduced, only needs one can complete audio-visual synchronization input with HDMI wire；Field wiring is simple, and construction is easy, and reliability is higher.
Description
Technical field
The utility model belongs to video equipment technical field, more particularly, to a kind of audio frequency and video based on HDMI input interfaces
Piece-rate system.
Background technology
High definition is inquested and court's trial main frame is to use embedded scheme, the special industry master developed for public security organs' industry
Machine, main frame are that SDI digital high-definitions and network high-definition signal can be supported to mix access, and the progress of its vision signal is local defeated
Go out echo and coding, be locally stored, the embedded device that real-time CD recording and network real-time video are propagated.
High definition is inquested with court's trial main frame in actual use, generally requires to input audio frequency and video evidence, and evidence is regarded
Frequency is output to high-clear display, and evidence audio is played by local audio amplifier, while also to carry out the backed up in synchronization of audio frequency and video evidence
Imprinting.
Existing evidence input mainly uses USB interface, and video is inputted by VGA, and audio is inputted by 3.5MM interfaces,
The shortcomings of there is wiring complexity in this input mode, input video resolution ratio is low, and area occupied is big.The present invention passes through HDMI
Audio frequency and video are inputted, HDMI is to belong to high-definition digital interface, can input audio frequency and video simultaneously, it is defeated to compensate for existing USB interface
Enter the shortcomings that existing.
The content of the invention
In view of this, the utility model is directed to a kind of audio frequency and video piece-rate system based on HDMI input interfaces, with solution
It is USB interface that certainly the input of existing evidence is most of, and the audio frequency and video of evidence need separately input, and main deficiency has and can only input mould
Intend video, wiring is cumbersome, complex operation, situations such as being unfavorable for site installation test.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of audio frequency and video piece-rate system based on HDMI input interfaces, including audio frequency and video separating chips, the audio frequency and video point
Off-chip piece is provided with HDMI, and audio-video source to be separated is sent to sound by PC by HDMI buses and the HDMI
Video separation chip；
The audio isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by D/A change-over circuits；
The video isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by A/D change-over circuits.
Further, the coding compression acquisition chip is also connected with power amplifier, and the power amplifier connects audio amplifier.
Further, the coding compression acquisition chip is also connected with LCD display.
Further, the coding compression acquisition chip connects disc recording apparatus by SATA interface.
Further, the coding compression acquisition chip connects storage hard disk by SATA interface.
Relative to prior art, the audio frequency and video piece-rate system described in the utility model based on HDMI input interfaces have with
Lower advantage：
Audio frequency and video piece-rate system described in the utility model based on HDMI input interfaces, can input high-resolution regard
Frequency signal；Input wire rod is reduced, only needs one can complete audio-visual synchronization input with HDMI wire；Field wiring is simple, and construction is held
Easily, reliability is higher.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the audio frequency and video piece-rate system theory structure based on HDMI input interfaces described in the utility model embodiment
Figure；
Fig. 2 is the HDMI of the audio frequency and video piece-rate system based on HDMI input interfaces described in the utility model embodiment
Circuit diagram；
Fig. 3 is the audio frequency and video piece-rate system LT8511 chips based on HDMI input interfaces described in the utility model embodiment
Circuit diagram；
Fig. 4 is the audio frequency and video piece-rate system CS4344 chips based on HDMI input interfaces described in the utility model embodiment
Circuit diagram.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Such as Fig. 1, shown in Fig. 2, a kind of audio frequency and video piece-rate system based on HDMI input interfaces, including audio frequency and video separating core
Piece, the audio frequency and video separating chips are provided with HDMI, and PC will be to be separated by HDMI buses and the HDMI
Audio-video source is sent to audio frequency and video separating chips；
Such as Fig. 3, shown in Fig. 4, video separation chip handles video information respectively using CS4344 and LT8511 combined chips
And audio-frequency information；IIS_SDO pins, IIS_SK pins, IIS-_WS pins, the MCLK pins of LT8511 chips, correspond to connect respectively
Connect SDIN pins, DEM/SCKL pins, LRCK pins, the MCLK pins of CS4344 chips.
The audio isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by D/A change-over circuits；Sound
The video isolated is sent to coding compression acquisition chip by video separation chip by A/D change-over circuits.The coding compression
Acquisition chip uses HI3536 chips.
Wherein, the coding compression acquisition chip is also connected with power amplifier, and the power amplifier connects audio amplifier.The coding compression collection
Chip is also connected with LCD display.
Wherein, the coding compression acquisition chip connects disc recording apparatus by SATA interface.Coding compression collection core
Piece connects storage hard disk by SATA interface.
It is a kind of to realize the method that audio frequency and video are obtained by HDMI input interfaces, comprise the following steps：
S1, PC are connected to the HDMI input interfaces of audio frequency and video separating chips by HDMI buses, and will need what is separated
Audio-video source is sent to audio frequency and video separating chips；
S2, audio frequency and video separating chips separate Voice ＆ Video, and by process circuit, audio, video are sent to
Coding compression acquisition chip；
S3, the Voice ＆ Video converted enter coding compression acquisition chip and carry out coding collection；
S4, the Voice ＆ Video information after processing stored and played.
Wherein, in the step S3, the specific processing method of process circuit is such as that audio is changed into by D/A conversion chips
The audio of simulation；Video changes into the digital video of BT1120 forms by A/D conversion chips.
Wherein, in the step S4, storage and the specific execution method played are to store Voice ＆ Video Information Compression
In hard disk and CD；Video is output to audio amplifier by power amplifier and played back by display exhibits evidence video, audio signal.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
- A kind of 1. audio frequency and video piece-rate system based on HDMI input interfaces, it is characterised in that：It is described including audio frequency and video separating chips Audio frequency and video separating chips are provided with HDMI, and PC is by HDMI buses and the HDMI by audio-video source to be separated It is sent to audio frequency and video separating chips；The audio isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by D/A change-over circuits；The video isolated is sent to coding compression acquisition chip by audio frequency and video separating chips by A/D change-over circuits.
- 2. the audio frequency and video piece-rate system according to claim 1 based on HDMI input interfaces, it is characterised in that：The coding Compression acquisition chip is also connected with power amplifier, and the power amplifier connects audio amplifier.
- 3. the audio frequency and video piece-rate system according to claim 1 based on HDMI input interfaces, it is characterised in that：The coding Compression acquisition chip is also connected with LCD display.
- 4. the audio frequency and video piece-rate system according to claim 1 based on HDMI input interfaces, it is characterised in that：The coding Compression acquisition chip connects disc recording apparatus by SATA interface.
- 5. the audio frequency and video piece-rate system according to claim 1 based on HDMI input interfaces, it is characterised in that：The coding Compression acquisition chip connects storage hard disk by SATA interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720799690.0U CN206878977U (en) | 2017-07-04 | 2017-07-04 | A kind of audio frequency and video piece-rate system based on HDMI input interfaces |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720799690.0U CN206878977U (en) | 2017-07-04 | 2017-07-04 | A kind of audio frequency and video piece-rate system based on HDMI input interfaces |
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| Publication Number | Publication Date |
|---|---|
| CN206878977U true CN206878977U (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720799690.0U Expired - Fee Related CN206878977U (en) | 2017-07-04 | 2017-07-04 | A kind of audio frequency and video piece-rate system based on HDMI input interfaces |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107197189A (en) * | 2017-07-04 | 2017-09-22 | 天津天地伟业信息系统集成有限公司 | A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces |
-
2017
- 2017-07-04 CN CN201720799690.0U patent/CN206878977U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107197189A (en) * | 2017-07-04 | 2017-09-22 | 天津天地伟业信息系统集成有限公司 | A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20180704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |