CN201557207U - Video encoder - Google Patents
Video encoder Download PDFInfo
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- CN201557207U CN201557207U CN 200920061075 CN200920061075U CN201557207U CN 201557207 U CN201557207 U CN 201557207U CN 200920061075 CN200920061075 CN 200920061075 CN 200920061075 U CN200920061075 U CN 200920061075U CN 201557207 U CN201557207 U CN 201557207U
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- video encoder
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Abstract
The utility model provides an embedded type video encoder, which comprises a main control and network transmission module, a video acquisition module and an audio-video compression module. An SIP communication protocol stack is mounted inside the main control and network transmission module which initializes the video acquisition module via an I2C bus, the video acquisition module controls digital image output format, and the audio-video compression module compresses and encodes digital image signals. Compressed images are packed into an IP packet by the main control and network transmission module and transmitted to a network via an internal bus in the IP packet form, the video encoder has the advantages of strong data processing capacity, fine real-time performance and simple structure, any authorized user on the internet in any where can log into the server for observing and receiving of image data, and the video encoder can be used in network monitoring and video conferences and the like with high requirement on image quality.
Description
Technical field
The utility model relates to electronic applications, relates in particular to video monitoring and communication equipment, particularly embedded video communication equipment, and concrete is a kind of embedded video encoder.
Background technology
Along with the continuous development of network technology and multimedia technology, multimedia communication service is dominate in Internet uses gradually, and is wherein particularly outstanding with the VOIP The Application of Technology.VOIP is the voice communication of IP based network, and it is not only sense stricto IP phone, and one can provide the comprehensive application platform that comprises the various multimedia services of video interactive especially.The VOIP system is generally based on SIP or two kinds of communication control processors H.323.That Session Initiation Protocol has is simple for structure, be easy to expand and be suitable for good characteristic such as Internet access, and it can control media gateway effectively, and control PC calls out.Be about to become under the overall background of next generation network switching technology in Softswitch technology, SIP is considered to can be used as the Access Layer core protocol of Softswitch technology with its many advantage, and is successfully applied in the representative system of many telecom operators.The SIP multi-media network comprises the realization of SIP multimedia terminal and sip server.Wherein the research work of sip terminal comprises the encoding and decoding and the RTP transmission of Session Initiation Protocol stack, video-voice frequency flow.
The utility model content
Be to solve the deficiency that prior art exists, the utility model provides a kind of embedded video encoder, comprising: the master control network transmission module of holding concurrently, and built-in SIP communication protocol stack, and by I2C bus initialization video acquisition module; Video acquisition module, control figure image output format; The audio frequency and video compression module carries out compressed encoding to data image signal, and becomes the IP bag by the master control package images that network transmission module will compress of holding concurrently, and sends into Internet by the 10/100Mbps Ethernet interface.
Described embedded video encoder, wherein video acquisition module adopts SAA7113.
Described embedded video encoder, wherein the audio frequency and video compression module adopts AT2042.
The utility model embeds the SIP communication module, the video signal data collecting device can be connected to network fast by Session Initiation Protocol, is not subjected to the restriction of the data transmission conditions of device bus, can be configured application flexibly.
Description of drawings
Accompanying drawing 1 is a system architecture diagram of the present utility model;
Accompanying drawing 2 is internal structures of AT2402;
Accompanying drawing 3 is internal structures of MPC860T.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
The utility model adopts the System Framework of MCU+AT2042, MCU adopts MPC860T, system forms as shown in Figure 1, comprise: be the master control of the core network transmission module of holding concurrently with MPC860T, simultaneously built-in SIP communication protocol stack and be the video acquisition module of core with SAA7113 is the audio/video encoding/decoding module of core with AT2042.Wherein the SAA7113 chip can pass through software flexible ground control figure image output format, and the various forms of compatible video.MPC860T passes through I
2C bus initialization SAA7113 is the ITU-R656 standard digital signals with PAL form analog signal conversion, goes into AT2042 with 8 bit data bus.AT2042 carries out compressed encoding to data image signal; The package images that MPC860T will compress becomes the IP bag, sends into Internet by the 10/100Mbps Ethernet interface.
The audio frequency and video compression module:
The core AT2042 of audio frequency and video compression module, it is the 2 passage audio/video encoding/decoding chips of a built-in microcontroller ARM946E, mainly finish Code And Decode to video and speech data, support multiple Audio Video coding Standard, can be directly and multiple cpu i/fs such as IBM, Motorola, ARM, Xscale and Axis, need not other adjunct circuit.The internal structure of AT2042 as shown in Figure 2.Status register and command register and four I/O queues that MPC860T passes through AT2042 to control and the visit of AT2042: transmission/reception formation, multiplex/demultiplex formation.
The Network Transmission control module:
Network Transmission gets nucleus module and adopts 32-bit microprocessor MPC860T, and its internal structure as shown in Figure 3.
With respect to MPC860, MPC860T has increased fast Ethernet controller (FEC) and has supported the 100M Fast Ethernet.Can be divided into four parts according to functional structure: the one, PowerPC flush bonding processor kernel, the 2nd, system interface unit (SIU), the 3rd, Communications Processor Module (CPM), the 4th, fast Ethernet controller (FEC).Except that SIU, all the other all have processor or controller, and CPM and FEC have shared the peripheral task of embedded PowerPC nuclear, and the image data transmission after will compressing by FEC is to network.
Microprocessor of the present utility model is connected with the SIP communication controler, and the SIP communication controler is connected with ethernet controller. Traditional analog video signal is converted to data signal, compressed by dedicated tone coding and decoding video chip AT2042, and use the VxWorks real time operating system that data are packed, be sent to network by internal bus with the form that IP wraps, have that data-handling capacity is strong, real-time good, characteristics simple in structure, arbitrary authorized user on the Internet all can be logined this server anywhere and observe and receive view data, can be used for network monitoring that picture quality is had relatively high expectations and video conference etc.
Claims (3)
1. video encoder is characterized in that:
The master control network transmission module of holding concurrently, built-in SIP communication protocol stack, and by I2C bus initialization video acquisition module;
Video acquisition module, control figure image output format;
The audio frequency and video compression module carries out compressed encoding to data image signal, and becomes the IP bag by the master control package images that network transmission module will compress of holding concurrently, and sends into Internet by the 10/100Mbps Ethernet interface.
2. video encoder as claimed in claim 1 is characterized in that video acquisition module adopts SAA7113.
3. video encoder as claimed in claim 2 is characterized in that the audio frequency and video compression module adopts AT2042.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920061075 CN201557207U (en) | 2009-07-23 | 2009-07-23 | Video encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920061075 CN201557207U (en) | 2009-07-23 | 2009-07-23 | Video encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201557207U true CN201557207U (en) | 2010-08-18 |
Family
ID=42616896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920061075 Expired - Lifetime CN201557207U (en) | 2009-07-23 | 2009-07-23 | Video encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201557207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647585A (en) * | 2012-05-02 | 2012-08-22 | 上海纬而视数码科技有限公司 | Universal high definition (HD) video signal collecting and coding device and data transmission method |
-
2009
- 2009-07-23 CN CN 200920061075 patent/CN201557207U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647585A (en) * | 2012-05-02 | 2012-08-22 | 上海纬而视数码科技有限公司 | Universal high definition (HD) video signal collecting and coding device and data transmission method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |
|
| CX01 | Expiry of patent term |