CN107666582A - Video signal conversion method and system - Google Patents
Video signal conversion method and system Download PDFInfo
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- CN107666582A CN107666582A CN201610601016.7A CN201610601016A CN107666582A CN 107666582 A CN107666582 A CN 107666582A CN 201610601016 A CN201610601016 A CN 201610601016A CN 107666582 A CN107666582 A CN 107666582A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
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Abstract
The present invention provides video signal conversion method and system, the encoded rear transmission of vision signal for being arrived generic video interface by proprietary protocol, shown again after decoding, substitute the existing optical fiber transmission method using SDI interfaces, both avoided SDI interfaces by optical fiber transmission belt come loss synchronously cause blank screen the problem of, turn avoid the problem of SDI interfaces do not support various video resolution ratio.
Description
Technical field
The present invention relates to field of video transmission, more particularly to video signal conversion method and system.
Background technology
At this stage, the transmission of lossless video typically uses the interfaces such as DVI, HDMI, SDI, wherein, DVI, HDMI use
The distance of special wire rod, typically 30 meters or so of normal transmission of energy, application scenarios are limited；SDI interfaces can use coaxial cable or light
Fibre, because the thick heaviness of coaxial cable, cost performance be not high, increasing application scenario likes transmitting lossless regard using optical fiber
Frequently.However, though the optical fiber transmission of SDI interfaces has preferable compatibility, in the presence of two FAQs.
One problem is：, easily there is picture blank screen in receiving terminal in the optical fiber transmission of SDI interfaces, though it can recover in moment
Normally, Consumer's Experience but is extremely influenceed.Its reason is：The transmission of SDI interfaces is serial digital component signal, must be entered before transmission
The certain coding of row, SDI interfaces encode (nrzi encoding) using Non Return to Zero Inverted, and this coding uses NRZI level once
Overturn to represent the logical zero of Data level, the logical one of Data level is represented with previous NRZI level identical level
(upset represents " 0 ", constant to represent " 1 ").Nrzi encoding cannot be guaranteed that not including long even " 0 " or long even " 1 " in signal goes out in itself
Existing, this is unfavorable for clock recovery very much., (may continuously thousands of " 0 " or continuous when there is long string of continuous position in transmitting procedure
Thousands of " 1 ") it is difficult to determine the end of one and the beginning of another one, now, receiver may can lose synchronization, it is impossible to
Detect the correct number of " 0 " in continuous string.
Another problem is：Three kinds of lossless video resolution ratio of only support of the optical fiber transmission of SDI interfaces：3G-SDI's
1080P, HD-SDI 720P and SD-SDI PAL (720*576P25) or NTSC (720*486P30).It is specific for some and
Conventional resolution ratio, such as 1080I, want if being transmitted by optical fiber, can not just use sdi signal.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide lossless video transmission method and it is
System, substitute the existing optical fiber transmission method using SDI interfaces, both avoided SDI interfaces by optical fiber transmission belt come loss it is same
The problem of step causes blank screen, it turn avoid the problem of SDI interfaces do not support various video resolution ratio.
In order to achieve the above objects and other related objects, the present invention provides a kind of video signal conversion method, including：It will regard
First vision signal of frequency image is converted into the second vision signal：When the field sync signal for detecting first vision signal is
During high level, the header signal of second vision signal is correspondingly arranged as high level；Search in the field sync signal
Valid data row, and obtain data enable signal corresponding to the valid data row；When detecting that the data enable signal is
During high level, the data valid signal of second vision signal is correspondingly arranged as high level；Effectively believed according to the data
The data-signal of number generation second vision signal, wherein, data-signal corresponding to the high level of the data valid signal
Contain video effective data；The video information of the video image is obtained, generates the video letter of second vision signal according to this
Information signal.
In one embodiment of the invention, the video information includes：Have by/interlacing mark, even odd frames mark, present frame
Imitate number of data lines, present frame often the pixel number of row valid data and one kind in current video image frame number per minute or
Multiple combinations；The video information signal includes：By/interlacing id signal, even odd frames id signal, present frame valid data
Line number signal, present frame are often in the pixel number signal of row valid data and current video image frame count signal per minute
One or more combination.
In one embodiment of the invention, methods described also includes：One or more combinations in the following manner are incited somebody to action
To the second vision signal be converted to the 3rd vision signal：Mode 1) when it is high level to detect the header signal, in institute
State the video letter that a HEAD keywords are set in the 3rd vision signal and follow the predetermined number behind the HEAD keywords
Breath；Mode 2) when it is high level to detect the data valid signal, set a BODY to close in the 3rd vision signal
Key word, and by the data valid signal be high level corresponding to video effective data be arranged at the BODY keywords after
Face；Mode 3) when detecting the reset signal in second vision signal, set in the 3rd vision signal default
The RESET keywords of clock number；Mode 4) in the 3rd vision signal except the mode 1) to the other times in addition to 3)
Upper setting IDLE keywords.
In one embodiment of the invention, methods described also includes：According to control corresponding to the 3rd vision signal generation
Signal, the control signal include：Key word type identification section and video information/data type identification section, wherein, the pass
Key word type identification section be used to representing corresponding to the 3rd vision signal be the HEAD keywords, it is the BODY keywords, described
One or more combinations in RESET keywords and the IDLE keywords, the video information/data type identification section are used
In the 3rd vision signal corresponding to expression be video information or video effective data.
In order to achieve the above objects and other related objects, the present invention provides a kind of video signal conversion method, including：According to
One or more combinations in the following manner reduce the 3rd vision signal obtained according to above-mentioned video signal conversion method
Into the second vision signal：Mode 5) according to the HEAD keyword restoration header signals detected, and obtain the HEAD keywords
Video information below, corresponding video information signal is reduced according to this；Mode 6) obtained according to the BODY keywords detected
Video effective data behind, and reduce the data valid signal and data-signal corresponding with the video effective data；
Mode 7) according to the corresponding reset signal of the RESET keyword restorations detected；Mode 8) detecting except the mode
5) when to the keyword 7) and outside IDLE keywords, present frame is abandoned, and detect HEAD keywords again.
In one embodiment of the invention, methods described also includes：The 3rd vision signal after reduction continuously obtained reaches
During to predetermined number, logo video stablizes input, and receiving side can be stablized and receive, and will receive the after the reduction the 3rd afterwards
The video effective data deposit buffer area that vision signal includes.
In one embodiment of the invention, methods described also includes：The second obtained vision signal is reduced into the first video
Signal：The video information of the video image is reduced according to the video information signal of second vision signal；According to described
The video information signal of two vision signals correspondingly generates the field sync signal, line synchronising signal and number of first vision signal
According to enable signal；According to the data enable signal of first vision signal of generation, the video taken out in the buffer area has
Data are imitated, restore the valid data row of the field sync signal of first vision signal.
In order to achieve the above objects and other related objects, the present invention provides a kind of signal transformation system, including：Conversion
Module, for the first vision signal of video image to be converted into the second vision signal：When detecting first vision signal
Field sync signal when being high level, the header signal of second vision signal is correspondingly arranged as high level；Described in lookup
Valid data row in field sync signal, and obtain data enable signal corresponding to the valid data row；It is described when detecting
When data enable signal is high level, the data valid signal of second vision signal is correspondingly arranged as high level；According to
The data valid signal generates the data-signal of second vision signal, wherein, the high level of the data valid signal
Corresponding data-signal contains video effective data；The video information of the video image is obtained, described second is generated according to this and regards
The video information signal of frequency signal.
In one embodiment of the invention, the system also includes：Coding module, for one kind in the following manner or
The second obtained vision signal is converted to the 3rd vision signal by multiple combinations：Mode 1) when detect the header signal for height
During level, a HEAD keywords are set in the 3rd vision signal and follow present count behind the HEAD keywords
The video information of amount；Mode 2) when it is high level to detect the data valid signal, set in the 3rd vision signal
A BODY keywords are put, and video effective data of the data valid signal corresponding to high level is arranged at the BODY
Behind keyword；Mode 3) when detecting the reset signal in second vision signal, in the 3rd vision signal
The upper RESET keywords that default clock number is set；Mode 4) in the 3rd vision signal except the mode 1) in addition to 3)
Other times on set IDLE keywords.
In order to achieve the above objects and other related objects, the present invention provides a kind of signal transformation system, including：Decoding
Module, the 3rd will obtained for one or more combinations in the following manner according to above-mentioned signal transformation system
Vision signal is reduced into the second vision signal：Mode 5) according to the HEAD keyword restoration header signals detected, and obtain institute
The video information behind HEAD keywords is stated, reduces corresponding video information signal according to this；Mode 6) according to what is detected
BODY keywords obtain video effective data behind, and reduce the data corresponding with the video effective data and effectively believe
Number and data-signal；Mode 7) according to the corresponding reset signal of the RESET keyword restorations detected；Mode 8) detecting
To except the mode 5) to keyword 7) and in addition to IDLE keywords when, abandon present frame, and it is crucial to detect HEAD again
Word.
In one embodiment of the invention, the system also includes：Modular converter, for the second vision signal that will obtain also
It is former into the first vision signal：The video that the video image is reduced according to the video information signal of second vision signal is believed
Breath；The field sync signal, OK of first vision signal is correspondingly generated according to the video information signal of second vision signal
Synchronizing signal and data enable signal；According to the data enable signal of first vision signal of generation, the caching is taken out
Video effective data in area, restore the valid data row of the field sync signal of first vision signal.
In order to achieve the above objects and other related objects, the present invention provides a kind of video-signal converting apparatus, including：As above
Described signal transformation system, and/or signal transformation system as described above.
In order to achieve the above objects and other related objects, the present invention provides a kind of video process apparatus, including：Including as above
The first device of described signal transformation system and the second device for including signal transformation system as described above,
The first device is connected with the second device by optical fiber.
As described above, the video signal conversion method and system of the present invention, are connect generic video interface by proprietary protocol
The encoded rear transmission of vision signal received, then show solve regarding for the resolution ratio that SDI interfaces are not supported after decoding
Keep pouring in the problem of defeated, it also avoid SDI interfaces by optical fiber transmission belt come loss synchronously cause blank screen the problem of.
Brief description of the drawings
Fig. 1 is shown as the hardware structure schematic diagram of one embodiment of the invention.
Fig. 2 is shown as the video signal conversion method flow chart of the video sending end of one embodiment of the invention.
Fig. 3 is shown as the exemplary graph of the video signal conversion method of the video sending end of another embodiment of the present invention.
Fig. 4 is shown as the exemplary graph of the video signal conversion method of the video sending end of another embodiment of the present invention.
Fig. 5 is shown as the video signal conversion method flow chart of the video receiver of one embodiment of the invention.
Fig. 6 is shown as the signal transformation system module map of the video sending end of one embodiment of the invention.
Fig. 7 is shown as the signal transformation system module map of the video receiver of one embodiment of the invention.
Fig. 8 is shown as the video-signal converting apparatus schematic diagram of one embodiment of the invention.
Component label instructions
6 signal transformation systems
601 modular converters
602 coding modules
7 signal transformation systems
701 decoder modules
702 modular converters
8 video-signal converting apparatus
S101~S105 steps
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the case where not conflicting, following examples and implementation
Feature in example can be mutually combined.
It should be noted that the diagram provided in following examples only illustrates the basic structure of the present invention in a schematic way
Think, only show the component relevant with the present invention in schema then rather than according to component count, shape and the size during actual implement
Draw, kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its assembly layout kenel
It is likely more complexity.
The present invention provides video signal conversion method, and applied in the hardware structure for example shown in Fig. 1, the hardware structure connects
The video image sent by imaging first-class video capture device is received, after handling the vision signal of video image,
Retransmit to display devices such as displays and shown.Preferably, high speed serialization transceiver module uses the high speed string based on 8B10B
(it is that well-known fpga chip generates manufacturer to call XILINX IP, XILINX to row transceiver module, and IP refers to test through XILINX and met
The module of specific function, freely or with paying it can be supplied to fpga chip user use).
The present invention provides a kind of video signal conversion method, for generic video interface (input) module in Fig. 1, purpose
It is the generic video interface sequence for imaging the video image that first-class equipment collects being converted to privately owned video interface sequential,
Here it that is to say and the first vision signal be converted into the second vision signal.
Except the clock signal having, generic video interface has generally comprised：Field sync signal VIDEO_VSYNC, row are same
Walk signal VIDEO_HSYNC, valid data enable signal VIDEO_DE, video data VIDEO_DATA；Privately owned video interface one
As contain：Header signal TX_LVAL_1ST, data valid signal TX_DVAL, data-signal TX_DATA, video information signal,
Wherein, video information signal mainly includes：By/interlacing id signal TX_FIELD_EN, even odd frames id signal TX_FIELD_
FLG, present frame valid data line number signal LINE_NUM, present frame often the pixel number signal PIXL_NUM of row valid data,
Current video image frame count signal FRAME_RATE per minute.
It should be noted that even odd frames id signal TX_FIELD_FLG passes through I2C interface reads from HDMI acquisition chips
(such as AD9880) internal register, can set：TX_FIELD_EN=1 ' b0 (low level), present frame is represented to sweep line by line
Picture is drawn, TX_FIELD_EN=1 ' b1 (high level), represents that present frame is drawn a portrait for interlacing scan.Swept in current video for interlacing
When retouching, even odd frames id signal TX_FIELD_FLG mark present frames are strange or even, can be set：TX_FIELD_
FLG=1 ' b0 (low level), expression present frame are even frame, TX_FIELD_FLG=1 ' b1 (high level), represent that present frame is
Odd-numbered frame.
Referring to Fig. 2, specifically, methods described mainly comprises the following steps：
Step S101：When the field sync signal for detecting first vision signal is high level, described second is regarded
The header signal of frequency signal is correspondingly arranged as high level；
Step S102：The valid data row in the field sync signal is searched, and is obtained corresponding to the valid data row
Data enable signal；
Step S103：When it is high level to detect the data enable signal, by the data of second vision signal
Useful signal is correspondingly arranged as high level；
Step S104：The data-signal of second vision signal is generated according to the data valid signal, wherein, it is described
Data-signal corresponding to the high level of data valid signal contains video effective data；
Step S105：The video information of the video image is obtained, generates the video letter of second vision signal according to this
Information signal, wherein, the video information includes：By/interlacing mark, even odd frames mark, present frame valid data line number, current
The every pixel number of row valid data, the current video image frame number per minute etc. of frame.
Fig. 3 illustrates that generic video interface is transformed into the timing diagram of privately owned video interface by taking 1080P60 as an example.Detailed：
One frame portrait has 1125 rows, and VIDEO_VSYNC width is 5 rows, has 4 inactive lines before it, behind have 36 inactive lines, remaining
1080 behavior valid data；There are 2200 clocks per a line, clock frequency 148.5MHz, VIDEO_HSYNC width are 44
Clock, have 88 clocks before it, behind have 148 clocks, remaining 1920 clock is clock where valid data.Need spy
Very illustrate, if interlacing scan, such as：1080I60, row valid pixel points, in frame effectively line number, frame per second these three
Parameter is identical with 1080P60, i.e. LINE_NUM=1080, and effective line number halves as 540 rows actually in frame, but shown herein as
It is the line number after odd even interleave.
Further, methods described also includes：Using the proprietary protocol coding module in Fig. 1 to second vision signal
Encoded, to generate the 3rd vision signal, combined with specific reference to the one or more in the following manner：
Mode 1) when it is high level to detect the header signal, set a HEAD to close in the 3rd vision signal
Key word and the video information for following the predetermined number behind the HEAD keywords；
Mode 2) when it is high level to detect the data valid signal, set one in the 3rd vision signal
BODY keywords, and video effective data of the data valid signal corresponding to high level is arranged at the BODY keys
Behind word；
Mode 3) when detecting the reset signal in second vision signal, set in the 3rd vision signal
The RESET keywords of default clock number；
Mode 4) in the 3rd vision signal except the mode 1) to setting IDLE to close on the other times in addition to 3)
Key word.
For example, as shown in figure 4, can be with setting means 1) to several keywords in 4)：
C_HEAD_K=16'h01BC；C_BODY_K=16'h02BC；
C_RST_K=16'h03BC；C_IDLE_K=16'h00BC.
When the header signal for detecting the second vision signal, and when the header signal is high level, regarded the described 3rd
One HEAD keywords (01BC), also, the video letter of the predetermined number behind 01BC keywords are set on frequency signal GT_TXD
Breath, it is assumed that：Video information TX_FILED_EN, PIXL_NUM [11:0] (0~11), LINE_NUM [11:0]、TX_FILED_
FLG, FRAME_RATE have 33bit altogether, GT_TXD bit wides 16bit (bit wide of data by RGB, YVU different-format from 16bit to
36bit, herein using YUV422 forms, data bit width 16bit), so needing three clocks to complete transmission, Mei Geshi
The frame originating point information of clock transmission is assigned as：
Head_0 [0]=TX_FILED_EN；
head_1[15:4]=PIXL_NUM；
head_1[3:0]=LINE_NUM [11:8]；
head_2[15:8]=LINE_NUM [7:0]；
Head_2 [7]=TX_FILED_FLG；
head_2[6:0]=FRAME_RATE.
When the data valid signal for detecting the second vision signal, and when the data valid signal is high level, in GT_
One BODY keywords (02BC) are set on TXD, and are the video effective data corresponding to high level by the data valid signal
Valid data are arranged at behind 02BC keywords, and valid data are 1920 clock here.It is not involved with Fig. 4
Reset signal, if detecting, the RESET keywords (03BC) of 2048 clocks can be sent, finally, when will be other any
Between with IDLE keywords (00BC) fill, ensure GT_TXD it is uninterrupted.
Particularly, hexadecimal number is entered as due to four big keyword HEAD, BODY, RESET, IDLE here, is
It is keyword or valid data that can distinguish corresponding to each clock on GT_TXD, can also further generate control letter
Number GT_TXC is corresponded to therewith, and the control signal includes：For the 3rd vision signal corresponding to representing be the HEAD keywords,
The key word type of one or more combinations in the BODY keywords, the RESET keywords and the IDLE keywords
Identification section, and, for representing that corresponding 3rd vision signal is video information or video information/data of video effective data
Type identification section.For example, in Fig. 4, GT_TXC 2 ' b01 sections are key word type identification section, simultaneously the GT_TXD under clock
Signal content is keyword, and similarly, GT_TXC 2 ' b00 sections are video information/data type identification section, simultaneously under clock
GT_TXD signal contents are video information or video effective data.
The 3rd vision signal obtained through above method, it can be received and dispatched by the high speed serialization of the video sending end in Fig. 1
Module is transmitted, and the module can be by calling the PCS IP kernels of XILINX GTX IP kernels or LATTICE, by the 3rd video
After signal carries out 8B10B codings, sent with 500Mb/s~12.5Gb/s speed by optical fiber, with 1080P60/
Exemplified by YUV422, transmission rate is then：148.5MHz*16bit*10/8=2.9Gb/s.The high speed serialization transmitting-receiving of video receiver
Module is sent to proprietary protocol decoder module after 8B10B decodings are carried out.
Referring to Fig. 5, the present invention also provides another video signal conversion method, for the proprietary protocol decoding in Fig. 1
The 3rd above-mentioned vision signal is decoded into the second vision signal by module, and its principle can be regarded as above-mentioned vision signal conversion side
The inverse process of method, according to above-mentioned mode 1)~4) one or more combinations in selection in the following ways：
Mode 5) according to the HEAD keyword restoration header signals detected, and obtain regarding behind the HEAD keywords
Frequency information, corresponding video information signal is reduced according to this, that is to say, that HEAD keywords represent the beginning of a frame, now carry
Take the information such as video resolution；
Mode 6) video effective data behind obtained according to the BODY keywords that detect, and reduce and the video
Valid data corresponding data valid signal and data-signal, that is to say, that BODY keywords represent the beginning of a line；
Mode 7) according to the corresponding reset signal of the RESET keyword restorations detected, that is to say, that RESET is crucial
Word represents the interruption of the 3rd vision signal；
Mode 8) detecting except the mode 5) to keyword 7) and in addition to IDLE keywords when, abandon current
Frame, and HEAD keywords are detected again, that is to say, that now serial line interface receives wrong, and present frame is lost, and detects frame head again
Indicate HEAD keywords.
In one embodiment, when the 3rd vision signal after the reduction continuously obtained reaches predetermined number, logo video
Stablize input, and receiving side can be stablized and receive, will receive the video that the 3rd vision signal after the reduction includes afterwards has
Imitate data deposit buffer area.For example, continuously receiving 8 normal frames, i.e. number of pels per line, lines per picture is consistent with frame originating point information,
Begin to effective representation data being stored in buffer area.
Further, in addition to：Generic video interface (output) module in Fig. 1 reduces the second obtained vision signal
Into the first vision signal, for reducing corresponding generic video sequential, then effective representation data one is taken out from data buffer area
Rise and be sent to display device and shown, specifically：
1) video information of the video image is reduced according to the video information signal of second vision signal；
2) field synchronization of first vision signal is correspondingly generated according to the video information signal of second vision signal
Signal, line synchronising signal and data enable signal；
3) according to the data enable signal of first vision signal of generation, the video taken out in the buffer area is effective
Data, restore the valid data row of the field sync signal of first vision signal.
Referring to Fig. 6, with above method principle similarly, the present invention provides a kind of signal transformation system 6, preferably
Realized to carry the software of video sending end in Fig. 1.It is because the technical characteristic in above method embodiment can be used for this
System embodiment, thus it is no longer repeated.System 6 includes：Regarded for the first vision signal of video image to be converted into second
The modular converter 601 of frequency signal：When the field sync signal for detecting first vision signal is high level, by described second
The header signal of vision signal is correspondingly arranged as high level；The valid data row in the field sync signal is searched, and obtains institute
State data enable signal corresponding to valid data row；When it is high level to detect the data enable signal, by described second
The data valid signal of vision signal is correspondingly arranged as high level；The second video letter is generated according to the data valid signal
Number data-signal, wherein, data-signal corresponding to the high level of the data valid signal contains video effective data；Obtain
The video information of the video image, the video information signal of second vision signal is generated according to this.
In one embodiment, the system 6 also includes：It will be obtained for one or more combinations in the following manner
The second vision signal be converted to the coding module 602 of the 3rd vision signal：Mode 1) when detect the header signal for height
During level, a HEAD keywords are set in the 3rd vision signal and follow present count behind the HEAD keywords
The video information of amount；Mode 2) when it is high level to detect the data valid signal, set in the 3rd vision signal
A BODY keywords are put, and video effective data of the data valid signal corresponding to high level is arranged at the BODY
Behind keyword；Mode 3) when detecting the reset signal in second vision signal, in the 3rd vision signal
The upper RESET keywords that default clock number is set；Mode 4) in the 3rd vision signal except the mode 1) in addition to 3)
Other times on set IDLE keywords.
Referring to Fig. 7, with above method principle similarly, the present invention provides another signal transformation system 7, excellent
Elect the software realization for carrying video receiver in Fig. 1 as.Because the technical characteristic in above method embodiment can be used for this
System embodiment, thus it is no longer repeated.System 7 includes：Combined for the one or more in the following manner by root
The 3rd vision signal obtained according to above-mentioned signal transformation system is reduced into the decoder module 701 of the second vision signal：Side
Formula 5) according to the HEAD keyword restoration header signals detected, and the video information behind the HEAD keywords is obtained, according to
To reduce corresponding video information signal；Mode 6) video significant figure behind obtained according to the BODY keywords that detect
According to, and reduce the data valid signal and data-signal corresponding with the video effective data；Mode 7) according to what is detected
The corresponding reset signal of RESET keyword restorations；Mode 8) detecting except the mode 5) 7) and IDLE keywords to
Outside keyword when, abandon present frame, and again detect HEAD keywords.
In one embodiment, the system 7 also includes：For the obtain second vision signal to be reduced into the first video letter
Number modular converter 702：The video information of the video image is reduced according to the video information signal of second vision signal；
The field sync signal of first vision signal is correspondingly generated according to the video information signal of second vision signal, gone synchronously
Signal and data enable signal；
According to the data enable signal of first vision signal of generation, the video significant figure in the buffer area is taken out
According to restoring the valid data row of the field sync signal of first vision signal.
Referring to Fig. 8, with the above method, system embodiment principle similarly, the present invention provides a kind of vision signal and turned
Changing device 8, it is equipped with signal transformation system 6, and/or signal transformation system 7.Due to the technology in previous embodiment
Feature can apply to present apparatus embodiment, thus it is no longer repeated.
Referring to Fig. 1, with the above method, system, device embodiment principle similarly, the present invention is provided at a kind of video
Device is managed, including：It is equipped with the video sending end including signal transformation system 6 and is equipped with signal transformation system 7
Video receiver, video sending end connected with video receiver by high speed serialization transceiver module with optical fiber, wherein, video hair
The decoder module of sending end can select ORC200 videos decoding card, and coding/decoding method can turn DVI boxcars used in FTD100 optical fiber
On.Preferably, generic video interface (input) module is equipped with modular converter 601, and proprietary protocol coding module is equipped with coding
Module 602, proprietary protocol decoder module are equipped with decoder module 701, and generic video interface (output) module is equipped with modulus of conversion
Block 702.
In summary, video signal conversion method of the invention and system, the input of compatible different video equipment is advantageous to
Signal, to be shown, tested through long-time, applied in digital integral operating room, image quality is clear, flicker free blank screen shows
As effectively overcoming various shortcoming of the prior art and having high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (13)
- A kind of 1. video signal conversion method, it is characterised in that including：First vision signal of video image is converted into second Vision signal：When the field sync signal for detecting first vision signal is high level, the frame head of second vision signal is believed Number it is correspondingly arranged as high level；The valid data row in the field sync signal is searched, and obtains data enable signal corresponding to the valid data row；When it is high level to detect the data enable signal, the data valid signal of second vision signal is correspondingly set It is set to high level；The data-signal of second vision signal is generated according to the data valid signal, wherein, the data valid signal High level corresponding to data-signal contain video effective data；The video information of the video image is obtained, generates the video information signal of second vision signal according to this.
- 2. video signal conversion method according to claim 1, it is characterised in that the video information includes：By/interlacing Mark, even odd frames mark, present frame valid data line number, the present frame often pixel number of row valid data and current video figure As the one or more combination in frame number per minute；The video information signal includes：By/interlacing id signal, even odd frames The pixel number signal and current video figure of the every row valid data of id signal, present frame valid data line number signal, present frame As the one or more combination in frame count signal per minute.
- 3. video signal conversion method according to claim 1 or 2, it is characterised in that also include：According in the following manner One or more combinations the second obtained vision signal is converted into the 3rd vision signal：Mode 1) when it is high level to detect the header signal, set a HEAD crucial in the 3rd vision signal Word and the video information for following the predetermined number behind the HEAD keywords；Mode 2) when it is high level to detect the data valid signal, set a BODY to close in the 3rd vision signal Key word, and by the data valid signal be high level corresponding to video effective data be arranged at the BODY keywords after Face；Mode 3) when detecting the reset signal in second vision signal, set in the 3rd vision signal default The RESET keywords of clock number；Mode 4) in the 3rd vision signal except the mode 1) to setting IDLE keywords on the other times in addition to 3).
- 4. video signal conversion method according to claim 3, it is characterised in that also include：According to the 3rd video Control signal corresponding to signal generation, the control signal include：Key word type identification section and video information/data type Identification section, wherein, the key word type identification section is used to represent that corresponding 3rd vision signal is the HEAD keywords, institute The one or more stated in BODY keywords, the RESET keywords and the IDLE keywords combine, and the video information/ Data type identification section is used to represent that corresponding 3rd vision signal is video information or video effective data.
- A kind of 5. video signal conversion method, it is characterised in that including：One or more in the following manner are combined root The 3rd vision signal obtained according to the video signal conversion method described in claim 3 is reduced into the second vision signal：Mode 5) according to the HEAD keyword restoration header signals detected, and obtain the letter of the video behind the HEAD keywords Breath, reduces corresponding video information signal according to this；Mode 6) video effective data behind obtained according to the BODY keywords that detect, and reduce effective with the video Data corresponding data valid signal and data-signal；Mode 7) according to the corresponding reset signal of the RESET keyword restorations detected；Mode 8) detecting except the mode 5) to keyword 7) and in addition to IDLE keywords when, abandon present frame, and Again HEAD keywords are detected.
- 6. video signal conversion method according to claim 5, it is characterised in that also include：When the reduction continuously obtained When the 3rd vision signal afterwards reaches predetermined number, the video effective data that the 3rd vision signal after the reduction includes is deposited Enter buffer area.
- 7. video signal conversion method according to claim 6, it is characterised in that also include：The second video that will be obtained Signals revivification is into the first vision signal：The video information of the video image is reduced according to the video information signal of second vision signal；The field sync signal, OK of first vision signal is correspondingly generated according to the video information signal of second vision signal Synchronizing signal and data enable signal；According to the data enable signal of first vision signal of generation, the video effective data in the buffer area is taken out, Restore the valid data row of the field sync signal of first vision signal.
- A kind of 8. signal transformation system, it is characterised in that including：Modular converter, for by the first video of video image Signal is converted into the second vision signal：When the field sync signal for detecting first vision signal is high level, the frame head of second vision signal is believed Number it is correspondingly arranged as high level；The valid data row in the field sync signal is searched, and obtains data enable signal corresponding to the valid data row；When it is high level to detect the data enable signal, the data valid signal of second vision signal is correspondingly set It is set to high level；The data-signal of second vision signal is generated according to the data valid signal, wherein, the data valid signal High level corresponding to data-signal contain video effective data；The video information of the video image is obtained, generates the video information signal of second vision signal according to this.
- 9. signal transformation system according to claim 8, it is characterised in that also include：Coding module, for basis The second obtained vision signal is converted to the 3rd vision signal by one or more combinations in the following manner：Mode 1) when it is high level to detect the header signal, set a HEAD crucial in the 3rd vision signal Word and the video information for following the predetermined number behind the HEAD keywords；Mode 2) when it is high level to detect the data valid signal, set a BODY to close in the 3rd vision signal Key word, and by the data valid signal be high level corresponding to video effective data be arranged at the BODY keywords after Face；Mode 3) when detecting the reset signal in second vision signal, set in the 3rd vision signal default The RESET keywords of clock number；Mode 4) in the 3rd vision signal except the mode 1) to setting IDLE keywords on the other times in addition to 3).
- A kind of 10. signal transformation system, it is characterised in that including：Decoder module, for one kind in the following manner Or multiple combinations the 3rd vision signal that obtains signal transformation system according to claim 9 is reduced into second and regarded Frequency signal：Mode 5) according to the HEAD keyword restoration header signals detected, and obtain the letter of the video behind the HEAD keywords Breath, reduces corresponding video information signal according to this；Mode 6) video effective data behind obtained according to the BODY keywords that detect, and reduce effective with the video Data corresponding data valid signal and data-signal；Mode 7) according to the corresponding reset signal of the RESET keyword restorations detected；Mode 8) detecting except the mode 5) to keyword 7) and in addition to IDLE keywords when, abandon present frame, and Again HEAD keywords are detected.
- 11. signal transformation system according to claim 10, it is characterised in that also include：Modular converter, for inciting somebody to action The second obtained vision signal is reduced into the first vision signal：The video information of the video image is reduced according to the video information signal of second vision signal；The field sync signal, OK of first vision signal is correspondingly generated according to the video information signal of second vision signal Synchronizing signal and data enable signal；According to the data enable signal of first vision signal of generation, the video effective data in the buffer area is taken out, Restore the valid data row of the field sync signal of first vision signal.
- A kind of 12. video-signal converting apparatus, it is characterised in that including：Vision signal conversion system as claimed in claim 8 System, and/or signal transformation system as claimed in claim 10.
- A kind of 13. video process apparatus, it is characterised in that including：Including signal transformation system as claimed in claim 9 First device and include the second device of signal transformation system as claimed in claim 11, the first device and The second device is connected by optical fiber.
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