CN104780432A - Method for transmitting and expanding data through CEC (consumer electronics control) - Google Patents
Method for transmitting and expanding data through CEC (consumer electronics control) Download PDFInfo
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- CN104780432A CN104780432A CN201510131659.5A CN201510131659A CN104780432A CN 104780432 A CN104780432 A CN 104780432A CN 201510131659 A CN201510131659 A CN 201510131659A CN 104780432 A CN104780432 A CN 104780432A
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Abstract
The invention relates to multimedia audio-video electronic equipment technologies, provides a data transmission and expansion method which is simple in protocol, convenient to implement and easy to maintain aimed at HDMI CEC (high-definition multimedia interface consumer electronics control) interactive equipment, and particularly provides a method for transmitting and expanding data through CEC. The technical scheme is summarized as follows: firstly, a Vendor Command Parameter data structure is defined; secondly, a data sending end performs packaging processing on to-be-transmitted data content according to the data structure, filling of a data packaging status word is finished according to the data length during packaging, a CEC Frame is obtained, and if a single CEC Frame cannot completely transmit the to-be-transmitted data content, the to-be-transmitted data content is divided into a plurality of packages for packaging according to definition of the data structure. The method has the benefits of capabilities of bringing better experience to users and increasing the competitive force of products, and suitability for the HDMI CEC interactive equipment.
Description
Technical field
The present invention relates to multimedia audio-visual electronic device technology, particularly there is the technology of the multimedia audio-visual electronic equipment of HDMI.
Background technology
Along with the development of technology and the demand in market, consumer-elcetronics devices is more and more abundanter, such as DVD, digital flat panel TV, Set Top Box, can life be made colourful by the audio-visual equipment such as recording arrangement and digital power amplifier, but the thing followed is, remote controller also gets more and more.
CEC (Consumer Electronics Control), namely consumer electronics control to be born thereupon, for all home A/V equipments connected by HDMI wire provide a kind of agreement of senior controlling functions, user can be controlled the equipment that these connect by a remote controller, inside HDMI standard afterwards, constantly in the content enriching CEC agreement, many equipment control commands have been had for equipment development business inside CEC basic agreement, equipment development business research and develop support CEC equipment and by CEC certification, namely this equipment share a remote controller by HDMI wire and other equipment and carry out equipment control, inside CEC basic agreement, also define the command field (Vendor Specific Commands) for developer's self-defining and expansion, this field can be privately owned to Product Definition order data, equipment room can be enriched with this to control and mutual content.But in existing HDMICEC interactive device, for various reasons, an agreement simply, is not conveniently implemented and safeguards that easy data transmit extended method.
Summary of the invention
The object of the invention is for HDMI CEC interactive device, simple, the convenient enforcement of a kind of agreement to be provided and to safeguard that easy data transmit extended method, thus providing a kind of method being transmitted growth data by CEC.
The present invention solves its technical problem, and the technical scheme of employing is, the method transmitting growth data by CEC, is characterized in that, comprise the following steps:
Step 1, definition Vendor Command Parameter data structure;
Step 2, data sending terminal carry out package process according to data structure to the data content of required transmission, filling in of data packet status word is completed according to data length during package, obtain the CEC Frame (packet of CEC transmission, this packet obtains according to extended method encapsulation), if single CEC Frame can not transfer the data content of required transmission, definition then according to data structure is divided into multiple bag to carry out package, and is described current bag present position in the information of data structure describes;
CEC Frame is sent to data receiver by step 3, data sending terminal;
Step 4, data receiver receive CEC Frame, according to data structure, it is carried out to the parsing of data content, information according to data structure describes and judges whether this data content has been divided multiple bag transmission, transmitted data content is obtained if not then directly resolve, if then to receive and after having resolved the CEC Frame of all subpackages, carry out data group bag, obtain transmitted data content.
Concrete, in step 1, described data structure size will meet Vendor Specific Commands and limit.
Further, in step 1, described data structure size is less than or equal to 14Bytes.
Concrete, in step 2, during package process, each data structure represents a Frame.
The invention has the beneficial effects as follows, in the present invention program, by transmitting the method for growth data above by CEC, can to complete HDMI equipment room alternately seamless, to user better to experience, the competitiveness of improving product.
Embodiment
Below in conjunction with embodiment, describe technical scheme of the present invention in detail.
In method by CEC transmission growth data of the present invention, first Vendor Command Parameter data structure is defined, then data sending terminal carries out package process according to data structure to the data content of required transmission, filling in of data packet status word is completed according to data length during package, obtain the CEC Frame (packet of CEC transmission, this packet obtains according to extended method encapsulation), if single CEC Frame can not transfer the data content of required transmission, definition then according to data structure is divided into multiple bag to carry out package, and in the information of data structure describes, current bag present position is described, again CECFrame is sent to data receiver, after data receiver receives CEC Frame, according to data structure, it is carried out to the parsing of data content, information according to data structure describes and judges whether this data content has been divided multiple bag transmission, transmitted data content is obtained if not then directly resolve, if then to receive and after having resolved the CEC Frame of all subpackages, carry out data group bag, obtain transmitted data content.
Embodiment
Being transmitted in the method for growth data by CEC of the embodiment of the present invention, comprises following concrete steps:
Step 1, definition Vendor Command Parameter data structure.
In this step, data structure size demand fulfillment Vendor Specific Commands limits, and is generally less than and equals 14Bytes.
Step 2, data sending terminal carry out package process according to data structure to the data content of required transmission, filling in of data packet status word is completed according to data length during package, obtain the CEC Frame (packet of CEC transmission, this packet obtains according to extended method encapsulation), if single CEC Frame can not transfer the data content of required transmission, definition then according to data structure is divided into multiple bag to carry out package, and is described current bag present position in the information of data structure describes.
In this step, during package process, each data structure represents a Frame.
CEC Frame is sent to data receiver by step 3, data sending terminal.
Step 4, data receiver receive CEC Frame, according to data structure, it is carried out to the parsing of data content, information according to data structure describes and judges whether this data content has been divided multiple bag transmission, transmitted data content is obtained if not then directly resolve, if then to receive and after having resolved the CEC Frame of all subpackages, carry out data group bag, obtain transmitted data content.
Claims (4)
1. transmitted the method for growth data by CEC, it is characterized in that, comprise the following steps:
Step 1, definition Vendor Command Parameter data structure;
Step 2, data sending terminal carry out package process according to data structure to the data content of required transmission, filling in of data packet status word is completed according to data length during package, obtain CEC Frame, if single CEC Frame can not transfer the data content of required transmission, definition then according to data structure is divided into multiple bag to carry out package, and is described current bag present position in the information of data structure describes;
CEC Frame is sent to data receiver by step 3, data sending terminal;
Step 4, data receiver receive CEC Frame, according to data structure, it is carried out to the parsing of data content, information according to data structure describes and judges whether this data content has been divided multiple bag transmission, transmitted data content is obtained if not then directly resolve, if then to receive and after having resolved the CEC Frame of all subpackages, carry out data group bag, obtain transmitted data content.
2. transmitted the method for growth data as claimed in claim 1 by CEC, it is characterized in that, in step 1, described data structure size will meet Vendor Specific Commands and limit.
3. transmitted the method for growth data as claimed in claim 1 or 2 by CEC, it is characterized in that, in step 1, described data structure size is less than or equal to 14Bytes.
4. transmitted the method for growth data as claimed in claim 3 by CEC, it is characterized in that, in step 2, during package process, each data structure represents a Frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131659.5A CN104780432A (en) | 2015-03-25 | 2015-03-25 | Method for transmitting and expanding data through CEC (consumer electronics control) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510131659.5A CN104780432A (en) | 2015-03-25 | 2015-03-25 | Method for transmitting and expanding data through CEC (consumer electronics control) |
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| CN104780432A true CN104780432A (en) | 2015-07-15 |
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| CN201510131659.5A Pending CN104780432A (en) | 2015-03-25 | 2015-03-25 | Method for transmitting and expanding data through CEC (consumer electronics control) |
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Citations (7)
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| CN1893654A (en) * | 2005-06-27 | 2007-01-10 | 株式会社日立制作所 | Video signal transmission method and video processing system |
| CN101765005A (en) * | 2009-12-30 | 2010-06-30 | 四川长虹电器股份有限公司 | Method for realizing data transmission by utilizing TS-packet continuous null bytes in DVB |
| CN101933094A (en) * | 2008-01-31 | 2010-12-29 | 汤姆逊许可证公司 | Method and system for look data definition and transmission over a high definition multimedia interface |
| CN102662431A (en) * | 2012-03-14 | 2012-09-12 | 华为终端有限公司 | A docking station, method and system for controlling peripheral by utilizing same |
| CN103259781A (en) * | 2013-04-07 | 2013-08-21 | 内蒙古华腾科技发展有限公司 | Data transmission system based on image recognition |
| US8675682B2 (en) * | 2008-03-27 | 2014-03-18 | Panasonic Corporation | Wireless communication device for processing packet including at least one of video output format of video data and audio output format of audio data |
| CN103647981A (en) * | 2013-12-24 | 2014-03-19 | 深圳国微技术有限公司 | Method for realizing multiplexing of command and transport stream in DVB-CI interface |
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2015
- 2015-03-25 CN CN201510131659.5A patent/CN104780432A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1893654A (en) * | 2005-06-27 | 2007-01-10 | 株式会社日立制作所 | Video signal transmission method and video processing system |
| CN101933094A (en) * | 2008-01-31 | 2010-12-29 | 汤姆逊许可证公司 | Method and system for look data definition and transmission over a high definition multimedia interface |
| US8675682B2 (en) * | 2008-03-27 | 2014-03-18 | Panasonic Corporation | Wireless communication device for processing packet including at least one of video output format of video data and audio output format of audio data |
| CN101765005A (en) * | 2009-12-30 | 2010-06-30 | 四川长虹电器股份有限公司 | Method for realizing data transmission by utilizing TS-packet continuous null bytes in DVB |
| CN102662431A (en) * | 2012-03-14 | 2012-09-12 | 华为终端有限公司 | A docking station, method and system for controlling peripheral by utilizing same |
| CN103259781A (en) * | 2013-04-07 | 2013-08-21 | 内蒙古华腾科技发展有限公司 | Data transmission system based on image recognition |
| CN103647981A (en) * | 2013-12-24 | 2014-03-19 | 深圳国微技术有限公司 | Method for realizing multiplexing of command and transport stream in DVB-CI interface |
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Application publication date: 20150715 |