CN1816157A - Digital image output method and structure - Google Patents
Digital image output method and structure Download PDFInfo
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- CN1816157A CN1816157A CN 200610057766 CN200610057766A CN1816157A CN 1816157 A CN1816157 A CN 1816157A CN 200610057766 CN200610057766 CN 200610057766 CN 200610057766 A CN200610057766 A CN 200610057766A CN 1816157 A CN1816157 A CN 1816157A
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- 238000000034 method Methods 0.000 title claims description 16
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000003709 image segmentation Methods 0.000 description 1
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Abstract
The invention includes following steps: supplying an output unit of digital image, multiple receiving units of digital image, a data bus, and multiple signal lines of time pulse; the data bus and multiple signal lines of time pulse are connected between the output unit of digital image and the multiple receiving units of digital image; thought the data bus, the output unit of digital image outputs digital image data to the multiple receiving units of digital image; and through multiple signal lines of time pulse, multiple signals of time pulse are outputted to the multiple receiving units of digital image. The digital image data include time-sharing data to be transferred to the multiple receiving units. Multiple signals of time pulse with different phases send time-sharing data of digital image data to the multiple receiving units of digital image through time-sharing mode.
Description
Technical field
The present invention relates to a kind of method and framework of digital picture output, relate in particular to a kind of method and the framework that can support the digital picture output of multichannel video/image signal timesharing output.
Background technology
General digital video image processing components only has a digital video output interface usually, only needs one as VCD/DVD player (VCD/DVD player).Common image segmentation that is useful on monitoring trade and the multitask assembly of assembly that two digital video output interfaces are arranged, one tunnel output is used for real time monitoring, and one the tunnel exports to image compressor component compression back stores; Or the KTV player, the song that one tunnel output demonstration was sung at that time, one tunnel output shows that single other people of confession of song puts next song.
Fig. 1 is the framework of single channel data image signal interface commonly used.Comprised among the figure digital picture output unit 11, digital picture receiving element 12, data/address bus S1 in time between pulse holding wire S2, horizontal-drive signal line S3 and vertical synchronization signal line S4.Its action please refer to the sequential chart of annex.
Time pulse is transmitted by time pulse signal line S2, can be used as synchronous usefulness between digital picture output unit 11, digital picture receiving element 12 interfaces, and all time pulse signal is synchronous therewith for all signals of this interface.Data/address bus S1 (Data Bus) is used for transmitted image data (Video data), and it wants the image transmitted data, and width is generally 8 (8-bit), 10 (10-bit), 16 (16-bit) or 20 (20-bit).In addition, to be used to refer to those picture signal intervals as horizontal-drive signal (Hsync) and vertical synchronizing signal (Vsync), identification code signals such as (Field ID) be useful to other synchronizing signal.If the VBI in the image digital signal (vertical blankinginterval) contains in the zone EAV (end of active video) sign indicating number and SAV (start of active video) sign indicating number, and receiving terminal can recognize that then these extra signals can omit; Otherwise then keep.
Join Fig. 1 again.The left side is a digital picture output unit 11, and the right is a digital picture receiving element 12, so data are to pass to right-hand member from left end.Time pulse (Clock) can pass to right-hand member or right-hand member passes to left end from left end.In addition, synchronizing signal such as horizontal-drive signal (Hsync) and vertical synchronizing signal (Vsync) can pass to right-hand member or pass to left end from right-hand member from left end, wherein send end and are host side (master), and receiving terminal is subordinate end (slave).If the VBI of DID contains EAV and SAV sign indicating number, and receiving terminal can recognize that then aforesaid synchronizing signal can be omitted.
Effective DID interval can be obtained from the relation of aforesaid horizontal-drive signal (Hsync) and vertical synchronizing signal (Vsync) in the DID bus, or EAV and SAV sign indicating number among the VBI of deciphering DID are obtained.
Fig. 2 is the framework of multi-channel digital picture signal interface commonly used, comprised among the figure digital picture output unit 11, a plurality of digital picture receiving element 12, data/address bus S1 in time between pulse holding wire S2, horizontal-drive signal line S3 and vertical synchronization signal line S4.Digital picture output unit 11 can with the view data of different channels by each data/address bus S1 in time between pulse holding wire S2, horizontal-drive signal line S3 and vertical synchronization signal line S4 be sent to corresponding digital picture receiving element 12.Its operating principle equally can be with reference to the sequential chart of annex, its practice just with data/address bus S1 in time between pulse holding wire S2, horizontal-drive signal line S3 and vertical synchronization signal line S4 etc. copy as plural groups, correspond to a plurality of digital picture receiving elements 12 respectively.Each is irrelevant mutually usually when transmission for view data, and each passes each, and framework is simple.But this framework but causes assembly to be used for the number of output data bus for digital picture output unit 11 to become many, shortcomings such as packaging and testing cost increase.
Summary of the invention
The objective of the invention is to improve single component makes it have multichannel video digital output interface simultaneously, make assembly be used for the decreased number of output data bus, can save the packaging and testing cost, and simplify the circuit-board laying-out complexity, and then save the time and the cost of product design.And this its output signal of interface after improving also can be accepted by general individual channels receiving terminal, with the same received signal of original general standard digital signal transmission interface, that is to say the also compatible existing foregoing normal video coffret of this interface.
For reaching above-mentioned purpose, the present invention proposes a kind of method of digital picture output, comprising:
One digital picture output unit;
A plurality of digital picture receiving elements;
One data/address bus and a plurality of time pulse signal line;
Described data/address bus and a plurality of time pulse signal line are connected between described digital picture output unit and a plurality of digital picture receiving element;
This method comprises the steps:
Described digital picture output unit to this a plurality of digital picture receiving elements, and is exported extremely these a plurality of digital picture receiving elements of a plurality of time pulse signals respectively by a plurality of time pulse signal lines by described data/address bus output digital image data; Wherein, this DID comprises the time data that these a plurality of digital picture receiving elements are delivered in tendency to develop, and the phase place difference of these a plurality of time pulse signals; The out of phase of a plurality of time pulse signals of described digital picture output unit foundation is sent to described a plurality of digital picture receiving element with the time data timesharing of this DID.
According to said method the one corresponding framework of finishing this method is proposed also.
The method and the framework of digital picture output as described, wherein more comprising provides a horizontal-drive signal line and a vertical synchronization signal line, described two synchronous signal lines to be connected between this digital picture output unit and a plurality of digital picture receiving element.
The method and the framework of digital picture output as described, wherein said DID is to meet one of them DID of following digital visual interface standard, and these standards have ITU-R BT.601/656, SMPTE125M, BT.1302, SMPTE 267M, BT.799, BT.1303, SMPTE RP-175, BT.1120 and SMPTE 274M.
Description of drawings
Fig. 1: the configuration diagram of known single channel data image signal interface;
Fig. 2: the schematic diagram of the framework of the multi-channel digital picture signal interface of commonly using;
Fig. 3: the device schematic diagram of the plural number of preferred embodiment of the present invention (multichannel) video/image signal timesharing output interface;
Fig. 4: the DID structural representation (with two passage ITU-R BT.601/656, inner clock=135MHz, outside clock=27MHz are example) of the plural number of preferred embodiment of the present invention (multichannel) video/image signal timesharing output interface.
Embodiment
The method of digital picture output of the present invention, promptly the execution mode of plural number (multichannel) video output interface please refer to Fig. 3 and Fig. 4.
Fig. 3 is the device schematic diagram of the plural number of preferred embodiment of the present invention (multichannel) video/image signal timesharing output interface.The present invention and common technology difference are as follows:
A. all data image signal receiving terminals are shared identical data/address bus S1.
B. each channel all needs time pulse signal line S2 separately, except that the time pulse of first group of passage can be two-way, all the other time pulses are all sent by the digital picture output unit.
C. each channel can have synchronizing signal separately, and synchronous with time pulse separately.But except that the synchronizing signal of first group of channel can be the transmitted in both directions, other group is all sent from the digital picture output device.If the VBI in the DID of output contains EAV and SAV sign indicating number, and receiving terminal can recognize that then aforesaid synchronizing signal can be omitted.
Fig. 4 is the DID structural representation (with two passage ITU-R BT.601/656, inner clock=135MHz, outside clock=27MHz are example) of the plural number of preferred embodiment of the present invention (multichannel) video/image signal timesharing output interface.Data structure with two channel digital view data outputs is an example:
A. the 27MHz among the figure is a working standard output time pulse frequency.
B. the 135MHz among the figure is the time pulse of DID output device inside, be five times of standard output time pulse frequency 27MHz, all output time pulses all come internal time pulse since then, and are the integral multiple of 13.5MHz (1/2nd 27MHz).
C.Video data (AB) is the data of DID output bus, is mixed with the DID of A, B two channels, and two channels shared time scale in bus can be adjusted, and is not necessarily identical.
D. DID (Video data) (A), DID (Video data) (B) is respectively the data of actual indivedual DID buses, and is synchronous with 27MHz time pulse separately separately from each other.
With reference to the explanation of earlier figures four, the parameter of " plural number (multichannel) video/image signal timesharing output interface " of the present invention may command adjustment has:
A. output device internal time pulse frequency.
Export to the frequency of the time pulse of receiving terminal.
Export to the work period (duty cycle) of the time pulse of receiving terminal.
Export to the phase difference between the time pulse of different receiving terminals.
Export to the DID of receiving terminal and the phase difference between time pulse.
In the DID bus, the time scale that each channel occupied.
If need synchronizing signal, then the phase difference between these signals and time pulse also can be adjusted.
As can be seen from Figure 4, the phase place (Phase) of time pulse signal A (27MHz clock (A)) is different with the phase place of time pulse signal B (27MHz clock (B)), the slightly leading 27MHz clock of 27MHz clock (A) (B); Simultaneously, in data bus-bar (Video data (AB)) lining the data of A channel and B channel are arranged.The data of A channel have FF, 00,00, XY, CbA, YA, CrA.... etc.And the data of B channel have 80,10, FF, 00,00, XY, CbB etc.Utilize the triggering of main time pulse 135MHz Clock and 27MHz Clock (A) can obtain the data of the data of A channel; In like manner, utilize the triggering of main time pulse 135MHz Clock and 27MHz Clock (B) can obtain the data of the data of B channel.Certainly, the channel more than two also can come to be expanded in the same way.
The different video signal transmission originally of the present invention's method system required separately independently interface be integrated into and share same output interface, simultaneously by adjusting the required time pulse phase place of each passage and the phase place of level and vertical synchronizing signal, make each receiving unit can correctly receive this signal, show the image that desire shows.Characteristics are as follows:
One, is the notion of cutting apart the TCM of unit with the time pulse cycle, makes a plurality of digital video signals be incorporated on the data/address bus of a fixed width and transmit.
Two, each channel shared time pulse number under a pictorial element has nothing in common with each other, and distinguishes the passage identity with this, does not need to add specific coding in addition on transmitted track data.Such integrated signal can be worked as a plurality of independent vide display modules or the image input signal of processing components more simultaneously.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (6)
1, a kind of method of digital picture output comprises:
One digital picture output unit;
A plurality of digital picture receiving elements;
One data/address bus and a plurality of time pulse signal line;
Described data/address bus and a plurality of time pulse signal line are connected between described digital picture output unit and a plurality of digital picture receiving element;
This method comprises the steps:
Described digital picture output unit to this a plurality of digital picture receiving elements, and is exported extremely these a plurality of digital picture receiving elements of a plurality of time pulse signals respectively by a plurality of time pulse signal lines by described data/address bus output digital image data; Wherein, this DID comprises the time data that these a plurality of digital picture receiving elements are delivered in tendency to develop, and the phase place difference of these a plurality of time pulse signals; The out of phase of a plurality of time pulse signals of described digital picture output unit foundation is sent to described a plurality of digital picture receiving element with the time data timesharing of this DID.
2, the method for digital picture output as claimed in claim 1 wherein also comprises a horizontal-drive signal line and a vertical synchronization signal line, and it is connected between this digital picture output unit and a plurality of digital picture receiving element.
3, the method for digital picture output as claimed in claim 1, wherein said DID is to meet one of them DID of following digital visual interface standard, and these standards have ITU-R BT.601/656, SMPTE 125M, BT.1302, SMPTE 267M, BT.799, BT.1303, SMPTE RP-175, BT.1120 and SMPTE 274M.
4, a kind of framework of digital picture output, comprise: a digital picture output unit, a plurality of digital picture receiving element, a data/address bus and a plurality of time pulse signal line, this data/address bus and these a plurality of time pulse signal lines are connected between this digital picture output unit and a plurality of digital picture receiving element; It is characterized in that: this digital picture output unit be by these data/address bus output digital image data to this a plurality of digital picture receiving elements, and export extremely these a plurality of digital picture receiving elements of a plurality of time pulse signals respectively by a plurality of time pulse signal lines; Wherein, this DID comprises the time data that these a plurality of digital picture receiving elements are delivered in tendency to develop, and the phase place difference of these a plurality of time pulse signals; The out of phase of a plurality of time pulse signals of described digital picture output unit foundation is sent to described a plurality of digital picture receiving element with the time data timesharing of this DID.
5, the framework of digital picture output as claimed in claim 4, wherein also comprising provides a horizontal-drive signal line and a vertical synchronization signal line, and it is connected between this digital picture output unit and a plurality of digital picture receiving element.
6, the framework of digital picture output as claimed in claim 4, wherein said DID is to meet one of them DID of following digital visual interface standard, and these standards have ITU-R BT.601/656, SMPTE 125M, BT.1302, SMPTE 267M, BT.799, BT.1303, SMPTE RP-175, BT.1120 and SMPTE 274M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100577669A CN100450186C (en) | 2006-02-27 | 2006-02-27 | Digital image output method and structure |
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| CNB2006100577669A CN100450186C (en) | 2006-02-27 | 2006-02-27 | Digital image output method and structure |
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| CN1816157A true CN1816157A (en) | 2006-08-09 |
| CN100450186C CN100450186C (en) | 2009-01-07 |
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| AU1109099A (en) * | 1997-10-20 | 1999-05-10 | Wireless Facilities Inc. | Wireless multimedia carrier system |
| JP2002049363A (en) * | 2000-05-24 | 2002-02-15 | Sharp Corp | Picture display system |
| KR100349205B1 (en) * | 2000-11-17 | 2002-08-21 | 삼성전자 주식회사 | An apparatus for detecting a DVI connector in a digital video signal display system |
| CN1148967C (en) * | 2001-11-27 | 2004-05-05 | 李海舟 | Digital control method and system for real-time display multiway images on the same screen |
| CN100379282C (en) * | 2004-05-31 | 2008-04-02 | 威盛电子股份有限公司 | Disk player for multiple user |
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Owner name: WANG ZHONGZI Free format text: FORMER OWNER: YINGJIA SCIENCE AND TEXCHNOLOGY CO. LTD. Effective date: 20120220 Owner name: WU CHONGJIU Effective date: 20120220 |
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Effective date of registration: 20120220 Address after: The nebula China Taipei City Neihu district Taiwan Street 150 No. 46 Lane 9 Building 1 Co-patentee after: Wu Zhongjiu Patentee after: Wang Zhongzi Address before: Taiwan Taipei County China Sijhih City New Taiwan five road No. 100 14 floor Patentee before: Yingjia Science and Texchnology Co., Ltd. |
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