CN106162025A - A kind of algorithm realizing mutually conversion between HDMI signal and sdi signal - Google Patents
A kind of algorithm realizing mutually conversion between HDMI signal and sdi signal Download PDFInfo
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- CN106162025A CN106162025A CN201510197565.8A CN201510197565A CN106162025A CN 106162025 A CN106162025 A CN 106162025A CN 201510197565 A CN201510197565 A CN 201510197565A CN 106162025 A CN106162025 A CN 106162025A
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Abstract
The present invention proposes a kind of to realize the algorithm that sdi signal and HDMI signal are mutually changed, and by being audio signal and encoding video signal to sdi signal or the HDMI signal decomposition of input, is further converted to HDMI signal or sdi signal.Step includes: input sdi signal or HDMI signal decomposition are audio signal and video signal by (1)；(2) video signal and the audio signal of decomposition are carried out sampling packing；(3) carry out encoding, encrypting by the data signal of sampling packing；(4) data signal of coding, encryption is processed, generate corresponding HDMI signal or sdi signal.The algorithm that the present invention proposes can realize the mutual conversion of sdi signal and HDMI signal, it is to avoid needs different transducers during multi-signal conversion, has saved great amount of cost；It addition, the algorithm that the present invention proposes is to be realized by software, simplify the design of chip circuit.
Description
Technical field
The present invention relates to high-definition video signal process field, specially one and realize sdi signal and HDMI signal
Between the algorithm of mutual conversion.
Background technology
HDMI (High Definition Multimedia Interface) full name high-definition media interface.It with
Based on DVI (Digital Visual Interfaee), inherit in DVI standard relative maturity and be easier to realize
Portion of techniques standard.Along with the determination of HD video form (720p/1080i/1080p), LCD TV,
The invention of the large scale digitizer tablet display devices such as plasm TV and universal, when HDMI becomes high definition
, purposes widest digital interface the highest for popularity rate.
SDI (serial digital interface) full name digital component serial line interface.In SDI interface, all
Data are all transmitted by same holding wire, and its transmission cost is cheap, so being widely used in radio and television
Transmission field.Multipair differential lines is taked to design inside HDMI, under equivalent video resolution, signal speed
Degree is less than SDI interface so that its design difficulty is the most relatively low with cost, so being mostly applied to family.Institute
With, in order to meet different use environment, it is sometimes necessary to enter between high definition SDI interface and HDMI
The conversion of row format, to play its respective advantage.It thus provides a set of high definition sdi signal and HDMI
The algorithm of mutual phase transformation between signal, it is possible to achieve use the most flexibly.
Summary of the invention
It is an object of the invention to provide and a kind of realize the algorithm that sdi signal and HDMI signal are mutually changed, comprehensively
Sdi signal interface and the advantage of HDMI signaling interface so that sdi signal and HDMI signal can be not
Use can be the most mutually changed in the environment of Tong.
Therefore, the algorithm that the sdi signal that the present invention provides and HDMI signal are mutually changed comprises the following steps:
1) it is audio signal and video signal by sdi signal/HDMI signal decomposition；(2) video signal that will decompose
Sampling packing is carried out with audio signal；(3) carry out encoding, encrypting by the data signal of sampling packing；(4)
The data signal of coding, encryption is processed, generates corresponding HDMI signal/sdi signal.
In step (1), making the video signal of decomposition meet EIA-CEA-861 form, audio signal meets IIS
Form.
In step (3), Verilog HDL language is used to encode, for HDMI sampling packetized signals
EDID, HDCP of needing during signal display and video and audio auxiliary information, these information are carried out by employing method
Coding.
In step (4), for avoiding sdi signal and HDMI signal, after mutually changing, incompatible situation occurs,
In concrete algorithm design, we also need further to analyze and research, in the design of bi-directional signal interface conversion,
Need sdi signal interface and the functional characteristics of HDMI signaling interface and demand combinations.
Compared with prior art, high definition is regarded by the sdi signal of the present invention with the mutual transfer algorithm of HDMI signal
Audio signal is split up into video signal and coding audio signal, conversion, remain well sdi signal and
The advantage of HDMI signal, further, we can be invented by this in sdi signal and HDMI signal it
Between the feature of mutual conversion, it is possible to achieve the application requirement of radio and television and home audio-visual；So, not only may be used
To avoid needing substantial amounts of translation interface between terminal unit and signal source, can also be greatly reduced simultaneously
The transmission cost of HDMI signal.
Accompanying drawing explanation
In order to be illustrated more clearly that technical scheme, provide below accompanying drawing and be briefly described,
Fig. 1 is a kind of to realize sdi signal and algorithm flow chart that HDMI signal is mutually changed；
Fig. 2 is a kind of to realize sdi signal and the specific implementation method of algorithm that HDMI signal is mutually changed.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by.Obviously, described embodiment be only the present invention part and not all embodiments.
Based on the embodiment in the present invention, person of ordinary skill in the relevant is not under making creative work premise
The all other embodiments obtained, broadly fall into the scope of protection of the invention.
With reference to Fig. 1, the invention provides a kind of algorithm realizing sdi signal and the mutually conversion of HDMI signal, including
Following steps:
(1) it is audio signal and video signal by sdi signal/HDMI signal decomposition；
(2) video signal and the audio signal of decomposition are carried out sampling packing；
(3) carry out encoding, encrypting by the data signal of sampling packing；
(4) data signal of coding, encryption is processed, generate corresponding HDMI signal/sdi signal.
In conjunction with Fig. 1 and Fig. 2, illustrate as follows:
In step (1), input sdi signal or HDMI signal decomposition become IIS form audio signal and
The video signal of EIA-CEA-861 form.
In step (2), synchronize to adopt by the audio signal of IIS form and the video signal of EIA-CEA-861 form
The method sampling packing of sample.
In step (3), use Verilog HDL language that the data signal of sampling packing is encoded, meanwhile,
EDID, HDCP of needing when showing for HDMI signal and video and audio auxiliary information, use method by these
Information encodes, by these coding signal integrations to the packetized signals of video signal and audio signal.
Coding signal is decoded by step (4), is allowed to generate corresponding HDMI signal or sdi signal,
Meanwhile, for avoiding sdi signal and HDMI signal, after mutually changing, incompatible situation, concrete algorithm occur
In design, we also need further to analyze and research, and in the design of bi-directional signal interface conversion, need SDI
Signaling interface and the functional characteristics of HDMI signaling interface and demand combinations get up.
Compared with prior art, the present invention is that a kind of realization is mutually changed between sdi signal and HDMI signal
Algorithm, separates process by video signal and audio signal, remains the high definition feature of video-audio signal well,
Further, this audio signal and video signal sampling can be packed, by Verilog HDL language by we
Carry out the algorithm realizing mutually conversion between sdi signal and HDMI signal encoded, expand the application of signal
Environment, simplifies hardware circuit design, reduces cost.
Above to the embodiment of the present invention about a kind of calculation realizing mutually conversion between sdi signal and HDMI signal
Method is described in detail, and applies specific case and carry out principle and the embodiment of the present invention in the present invention
Illustrating, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；With
Time, for one of ordinary skill in the art, according to the thought of the present invention, in detailed description of the invention and application
All will change in scope, in sum, this specification content should not be construed as limitation of the present invention.
Claims (3)
1. one kind realizes the algorithm that sdi signal is mutually changed with HDMI signal, it is characterised in that include following
Step:
(1) it is audio signal and video signal by sdi signal or the HDMI signal decomposition of input；
(2) video signal and the audio signal of decomposition are carried out sampling packing；
(3) for the signal data of sampling packing, carry out encoding, encrypting by Verilog HDL language, side
Just the long-distance transmissions of data, it is ensured that the definition of video；
(4) data of coding, encryption are processed, the HDMI signal required for generation and sdi signal；
Realize the algorithm steps of mutually conversion between sdi signal and HDMI signal the most as claimed in claim 1
(3) in, it is characterised in that use Verilog HDL language to encode, for HDMI sampling packetized signals
EDID (Extended display identification data), the HDCP (High needed during signal display
-bandwidth Digital Content Protection) and video and audio auxiliary information, use method by these information
Encode.
Realize the algorithm steps of mutually conversion between sdi signal and HDMI signal the most as claimed in claim 1
(4) in, for for avoiding sdi signal and HDMI signal, after mutually changing, incompatible situation occurs, we
Need to consider in the design of bi-directional signal interface conversion, by sdi signal interface and the merit of HDMI signaling interface
Energy feature and demand combinations are got up, and are truly realized compatible to SD I signal and HDMI signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510197565.8A CN106162025A (en) | 2015-04-21 | 2015-04-21 | A kind of algorithm realizing mutually conversion between HDMI signal and sdi signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510197565.8A CN106162025A (en) | 2015-04-21 | 2015-04-21 | A kind of algorithm realizing mutually conversion between HDMI signal and sdi signal |
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| Publication Number | Publication Date |
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| CN106162025A true CN106162025A (en) | 2016-11-23 |
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| CN201510197565.8A Pending CN106162025A (en) | 2015-04-21 | 2015-04-21 | A kind of algorithm realizing mutually conversion between HDMI signal and sdi signal |
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| CN101710957A (en) * | 2009-12-10 | 2010-05-19 | 浙江大华技术股份有限公司 | Conversion system and conversion method for converting SDI input signal into HDMI output signal |
| JP2011172197A (en) * | 2010-02-18 | 2011-09-01 | Isa Plan Inc | Hdmi-sdi converter |
| CN202475638U (en) * | 2011-12-23 | 2012-10-03 | 深圳市巨潮科技有限公司 | Converting device of multi-path composite HDMI audio frequency video signal |
| KR20130090063A (en) * | 2012-02-03 | 2013-08-13 | 주식회사 포리얼 | Apparatus for synchronizing of special effect and 4d projecting ststem |
| CN203279033U (en) * | 2013-06-07 | 2013-11-06 | 绍兴奥顿电子有限公司 | Converter of converting high definition serial digital interface signal into high definition multimedia interface signal |
| CN104486576A (en) * | 2014-12-30 | 2015-04-01 | 南京巨鲨显示科技有限公司 | Conversion system converting full-interface input signals to SDI output signals |
-
2015
- 2015-04-21 CN CN201510197565.8A patent/CN106162025A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710957A (en) * | 2009-12-10 | 2010-05-19 | 浙江大华技术股份有限公司 | Conversion system and conversion method for converting SDI input signal into HDMI output signal |
| JP2011172197A (en) * | 2010-02-18 | 2011-09-01 | Isa Plan Inc | Hdmi-sdi converter |
| CN202475638U (en) * | 2011-12-23 | 2012-10-03 | 深圳市巨潮科技有限公司 | Converting device of multi-path composite HDMI audio frequency video signal |
| KR20130090063A (en) * | 2012-02-03 | 2013-08-13 | 주식회사 포리얼 | Apparatus for synchronizing of special effect and 4d projecting ststem |
| CN203279033U (en) * | 2013-06-07 | 2013-11-06 | 绍兴奥顿电子有限公司 | Converter of converting high definition serial digital interface signal into high definition multimedia interface signal |
| CN104486576A (en) * | 2014-12-30 | 2015-04-01 | 南京巨鲨显示科技有限公司 | Conversion system converting full-interface input signals to SDI output signals |
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Application publication date: 20161123 |