CN107197189A - A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces - Google Patents
A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces Download PDFInfo
- Publication number
- CN107197189A CN107197189A CN201710539014.4A CN201710539014A CN107197189A CN 107197189 A CN107197189 A CN 107197189A CN 201710539014 A CN201710539014 A CN 201710539014A CN 107197189 A CN107197189 A CN 107197189A
- Authority
- CN
- China
- Prior art keywords
- video
- audio frequency
- audio
- hdmi
- input interfaces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
Abstract
The invention provides a kind of audio frequency and video piece-rate system and method 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 and method for the present invention 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 invention belongs to video equipment technical field, separated more particularly, to a kind of audio frequency and video based on HDMI input interfaces
System and method.
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 is 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 encode, 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,
There is wiring complexity in this input mode, input video resolution ratio is low, the shortcomings of 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, and audio frequency and video can be inputted simultaneously, existing USB interface are compensate for defeated
Enter the shortcoming of presence.
The content of the invention
In view of this, the present invention is directed to propose a kind of audio frequency and video piece-rate system and method based on HDMI input interfaces, with
It is USB interface to solve existing evidence input most of, and the audio frequency and video of evidence need separated input, and main deficiency, which has, to be inputted
Analog video, wiring is cumbersome, complex operation, situations such as being unfavorable for site installation test.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
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.
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.
Further, in the step S3, the specific processing method of process circuit is such as, audio by D/A conversion chips,
Change into the audio of simulation；Video changes into the digital video of BT1120 forms by A/D conversion chips.
Further, in the step S4, storage and the specific execution method played are, by Voice ＆ Video Information Compression
It is stored in hard disk and CD；Video is output to audio amplifier by power amplifier and played by display exhibits evidence video, audio signal
Out.
Relative to prior art, the audio frequency and video piece-rate system of the present invention based on HDMI input interfaces has following excellent
Gesture：
Audio frequency and video piece-rate system and method for the present invention based on HDMI input interfaces, can be inputted 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, construction
Easily, reliability is higher.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the audio frequency and video piece-rate system principle assumption diagram based on HDMI input interfaces described in the embodiment of the present invention；
Fig. 2 is the HDMI circuit of the audio frequency and video piece-rate system based on HDMI input interfaces described in the embodiment of the present invention
Figure；
Fig. 3 is the electricity of the audio frequency and video piece-rate system LT8511 chips based on HDMI input interfaces described in the embodiment of the present invention
Lu Tu；
Fig. 4 is the electricity of the audio frequency and video piece-rate system CS4344 chips based on HDMI input interfaces described in the embodiment of the present invention
Lu Tu.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
In the description of the invention, 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 the description present invention and simplifies description, rather than indicate or dark
Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention 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.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of 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.
6. a kind of method of audio frequency and video piece-rate system based on HDMI input interfaces applied to described in claim 1, its feature
It is, comprises the following steps：
S1, PC are connected to the HDMI input interfaces of audio frequency and video separating chips by HDMI buses, and the sound for needing to separate is regarded
Frequency 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 into coding
Compress 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.
7. the audio frequency and video separation method according to claim 6 based on HDMI input interfaces, it is characterised in that：The step
In S3, the specific processing method of process circuit is such as that audio changes into the audio of simulation by D/A conversion chips；Video passes through A/
D conversion chips, change into the digital video of BT1120 forms.
8. the audio frequency and video separation method according to claim 6 based on HDMI input interfaces, it is characterised in that：The step
In S4, storage and the specific execution method played are that Voice ＆ Video Information Compression is stored in hard disk and CD；Video leads to
Display exhibits evidence video is crossed, audio signal is output to audio amplifier by power amplifier and played back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710539014.4A CN107197189A (en) | 2017-07-04 | 2017-07-04 | A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710539014.4A CN107197189A (en) | 2017-07-04 | 2017-07-04 | A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107197189A true CN107197189A (en) | 2017-09-22 |
Family
ID=59880753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710539014.4A Pending CN107197189A (en) | 2017-07-04 | 2017-07-04 | A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107197189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055492A (en) * | 2017-12-20 | 2018-05-18 | 深圳市深智电科技有限公司 | A kind of HDMI sounds draw piece-rate system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135636A (en) * | 2014-07-29 | 2014-11-05 | 广州视源电子科技股份有限公司 | Display equipment with high-performance picture recording and picture recording method thereof |
| CN204836355U (en) * | 2015-07-08 | 2015-12-02 | 深圳市艾森魏尔科技有限公司 | HDMI changes VGA audio frequency and video separator |
| CN206004809U (en) * | 2016-09-09 | 2017-03-08 | 东莞市捷懋电子有限公司 | A kind of HDMI audio frequency and video cyclone separator arrangement |
| CN206004807U (en) * | 2016-09-09 | 2017-03-08 | 东莞市捷懋电子有限公司 | A kind of HDMI audio frequency and video separator |
| CN206878977U (en) * | 2017-07-04 | 2018-01-12 | 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 based on HDMI input interfaces |
-
2017
- 2017-07-04 CN CN201710539014.4A patent/CN107197189A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135636A (en) * | 2014-07-29 | 2014-11-05 | 广州视源电子科技股份有限公司 | Display equipment with high-performance picture recording and picture recording method thereof |
| CN204836355U (en) * | 2015-07-08 | 2015-12-02 | 深圳市艾森魏尔科技有限公司 | HDMI changes VGA audio frequency and video separator |
| CN206004809U (en) * | 2016-09-09 | 2017-03-08 | 东莞市捷懋电子有限公司 | A kind of HDMI audio frequency and video cyclone separator arrangement |
| CN206004807U (en) * | 2016-09-09 | 2017-03-08 | 东莞市捷懋电子有限公司 | A kind of HDMI audio frequency and video separator |
| CN206878977U (en) * | 2017-07-04 | 2018-01-12 | 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 based on HDMI input interfaces |
Non-Patent Citations (1)
| Title |
|---|
| 无: "HDMI音视频分离设备的用途", 《百度经验》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055492A (en) * | 2017-12-20 | 2018-05-18 | 深圳市深智电科技有限公司 | A kind of HDMI sounds draw piece-rate system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10721517B2 (en) | Method and system for synchronously reproducing multimedia multi-information | |
| KR20100014762A (en) | Information processing device and method | |
| CN104918016B (en) | A kind of system of multimedia multi information reproduced in synchronization | |
| EP3836571A1 (en) | Audio output apparatus and method of controlling thereof | |
| CN107197189A (en) | A kind of audio frequency and video piece-rate system and method based on HDMI input interfaces | |
| CN206878977U (en) | A kind of audio frequency and video piece-rate system based on HDMI input interfaces | |
| CN106210843A (en) | The play handling method of TV and device | |
| CN103299657B (en) | Audio signal processing | |
| CN206313908U (en) | A kind of high definition movable video monitoring equipment | |
| JP2017515164A (en) | Residual coding in object-based audio systems | |
| CN206575546U (en) | High resolution audio and video separator | |
| CN103179360B (en) | Video process apparatus | |
| CN204836355U (en) | HDMI changes VGA audio frequency and video separator | |
| CN203747907U (en) | VGA signal and HDMI signal mutual conversion signal converter | |
| JP6777071B2 (en) | Transmitter, transmitter, receiver and receiver | |
| KR20130001829U (en) | Converting apparatus of video and audio signal | |
| CN202231794U (en) | HDMI converter | |
| CN207099244U (en) | It is a kind of to support multichannel PAL video acquisitions, compression and the computer installation of transmission | |
| CN201114497Y (en) | Audio and video signal automatic multi-optional device | |
| CN204697215U (en) | Video capture device | |
| CN201107858Y (en) | Video matrix mainframe | |
| CN205681614U (en) | A kind of active audio amplifier of simulation 5.1 sound channels | |
| CN107820035A (en) | The merging method and HDMI connector of a kind of external audio signal and HDMI signals | |
| KR102370348B1 (en) | Apparatus and method for providing the audio metadata, apparatus and method for providing the audio data, apparatus and method for playing the audio data | |
| CN214154659U (en) | Special-shaped splicing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170922 |
|
| RJ01 | Rejection of invention patent application after publication |