CN105491318A - Device and method for single-path to multiple-path conversion of DP video signals - Google Patents
Device and method for single-path to multiple-path conversion of DP video signals Download PDFInfo
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Abstract
The invention discloses a device and a method for single-path to multiple-path conversion of DP video signals. The device comprises a man-machine interface module, a DP video receiving module, a DP protocol module, a DP video decoding module, a DP to RGB module, a RGB image resolution detection module, a RGB image caching module and a plurality of DP video output modules. The method provided by the invention is based on the device, and is used for reconstructing a DP image timing sequence at each local DP video output module according to one path of input DP video signals, and outputting multiple paths of DP image data from each local DP video output module to a to-be-tested module according to the timing sequence, thereby realizing a signal expansion function of one-path to multiple-path conversion of the DP video signals. The device and the method are suitable for verifying medium and large scale modules; moreover, each DP video output module is parallel and independent, parameters all can be adjusted separately, and each path of the DP video signals can be output independently and simultaneously, thus, the device and the method are suitable for simultaneously performing screen lighting verification for a mass of modules with same resolution and different characteristics under different working environment.
Description
Technical field
The invention belongs to signal processing technology field, more specifically, relate to the device and method that a kind of DP vision signal single channel turns multichannel.
Background technology
DP liquid crystal module has been widely used in various display device, has wide in variety, complete in specifications, cheap advantage; Each module manufacturer is also at the various DP module of large-scale production.Along with the increase of DP liquid crystal module demand, for ensureing DP liquid crystal module quality, particularly important to the testing authentication of DP liquid crystal module.
Need to use image signal source to be supplied to liquid crystal module to produce benchmark image to the testing authentication of DP liquid crystal module, and an existing image signal source often can only supply a small amount of several tested liquid crystal module; And large-scale DP liquid crystal module test needs great amount of images signal source, and image signal source is with high costs, and cannot realize testing the module of different qualities under multiple test environment simultaneously, causes production efficiency reduction, production cost raising.
For this reason, need a kind of DP vision signal expansion scheme, the DP vision signal that can provide according to the image signal source of input, generate the identical DP vision signal of multichannel and supply the detection of large-scale DP liquid crystal module as image signal source; Under being used in different test environments, the checking of same time point screen is carried out to the module of different qualities.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides the device and method that a kind of DP vision signal single channel turns multichannel, its object is to expansion DP video signal source.
For achieving the above object, according to one aspect of the present invention, provide the device that a kind of DP vision signal single channel turns multichannel, comprise a DP video signal input interface, DP video control signal input interface, a multiple DP video signal output interface, and solidify DP Video decoding module in a programmable logic device, DP protocol module, DP turn RGB module, RGB image resolution ratio detection module, rgb image data cache module and multiple DP Video Output Modules; This programmable logic device has the DP video signal input terminal coupling above-mentioned DP video signal input interface, the DP video control signal input terminal coupling above-mentioned DP video control signal input interface and couples multiple DP video signal output terminals of above-mentioned multiple DP video signal output interface one by one;
Wherein, DP protocol module is connected with DP Video decoding module, DP Video decoding module and DP turn RGB model calling, DP turns RGB module and is connected with RGB image resolution ratio detection module and rgb image data cache module, and RGB image resolution ratio detection module is connected with each DP Video Output Modules with rgb image data cache module; Each DP Video Output Modules is parallel independent, noiseless each other, and can respective independent parameters;
DP Video decoding module couples described DP video signal input interface by DP video signal input terminal, and DP protocol module and each DP Video Output Modules all couple described video control signal input interface by DP video control signal input terminal; Each DP Video Output Modules has multiple link (Lane) DP VT, each link DP VT couples DP video signal output interface by DP video signal output terminal, by DP video signal output interface DP vision signal is sent to the DP liquid crystal module to be measured in respective channel.
Preferably, above-mentioned DP vision signal single channel turns the device of multichannel, also comprises human-machine interface module; Human-machine interface module has outside display interface and external command input interface; This human-computer interaction module is used for generating DP video control signal according to external command, is sent to DP protocol module and each DP Video Output Modules by DP video control signal input terminal; Also for the state information of whole device is exported by outside display interface.
Preferably, above-mentioned DP vision signal single channel turns the device of multichannel, also comprises DP video reception module; This DP video reception module is solidified in above-mentioned programmable logic device, its first end couples described DP video signal input interface by described DP video signal input terminal, second end connects above-mentioned human-computer interaction module by above-mentioned DP video control signal input terminal, and the 3rd end is connected with above-mentioned DP Video decoding module; DP video reception module be used for the DP vision signal received from image signal source is electrically adjusted, time delay adjust and demodulation process, obtain the parallel demodulation data of each Lane.
Preferably, above-mentioned DP vision signal single channel turns the device of multichannel, and its DP video reception module comprises reception matching module, electrically rebuilds module, time delay alignment module and demodulation module;
Wherein, receive matching module and electrically rebuild model calling, electric rebuild module and be connected with time delay alignment module, time delay alignment module is connected with demodulation module; Receive the input of matching module as the first end of DP video reception module, the output of demodulation module is as the 3rd end of DP video reception module; Receive matching module control end, electrically rebuild the control end of module controls end, time delay alignment module control end and demodulation module side by side as the second end of DP video reception module;
Wherein, receive matching module to be used for being terminated and impedance matching to the DP vision signal of reception; Electric reconstruction module is used for adjudicating according to electrical standard the output signal receiving matching module and regenerating, and obtains the DP signal with standard electrical characteristic; Time delay alignment module, for the clock signal of each LaneDP signal inside of aliging and data-signal, makes between the data-signal of each Lane inside, aligns between data-signal and clock signal; The data-signal that demodulation module adopts the clock signal of each Lane parallel to each is sampled and demodulation, obtains the parallel demodulation bus data of each Lane.
Preferably, above-mentioned reception matching module comprises multiple reception matched sub-block, and electrically reconstruction module comprises multiple electric reconstruction submodule, time delay alignment module comprises multiple time delay alignment submodule, demodulation module comprises multiple demodulation submodule; Receive matched sub-block, electrically rebuild submodule, time delay alignment submodule is identical with the number of demodulation submodule.
Preferably, each demodulation submodule has self-calibration function, can carry out self calibration, clock can correctly be sampled and each data-signal of demodulation, the error avoiding external environmental interference to cause and drift according to the alignment time interval arranged; When the interference of certain Lane is more serious, the interval of calibration of the demodulation submodule that this Lane is corresponding arranges shorter, to improve the reliability of demodulation operation.
Preferably, above-mentioned DP vision signal single channel turns the device of multichannel, and its DP Video Output Modules comprises local image sequence generation module, output channel view data cache module, RGB image generating module, DP vision signal modular converter, DP time delay adjusting module and DP signal driver module;
Wherein, local image sequence generation module is all connected with RGB image generating module with output channel view data cache module, RGB image generating module is connected with DP vision signal modular converter, DP vision signal modular converter is connected with DP time delay adjusting module, and DP time delay adjusting module is connected with DP signal driver module; The input of local image sequence generation module, as the second end of DP Video Output Modules, connects RGB image resolution ratio detection module; The input of output channel view data cache module, as the 3rd end of DP Video Output Modules, connects rgb image data cache module; The output of DP signal driver module is as the DP VT of DP Video Output Modules;
Wherein, local image sequence generation module is for obtaining the some screen clock signal of DP liquid crystal module to be measured in respective channel according to the resolution of benchmark image and DP liquid crystal module time sequence parameter to be measured; Output channel view data cache module is used for caching image data; RGB image generating module is used for the view data receiving buffer memory according to above-mentioned some screen clock signal, produces the screen of the point needed for the module to be measured RGB picture signal of respective channel;
Above-mentioned some screen RGB picture signal is converted to DP vision signal by DP vision signal modular converter, and split the data of each Lane, recombinate, bit resets, and generates the DP parallel data that each exports Lane; DP time delay adjusting module is used for adjusting the time delay of the clock in each Lane exported and data-signal, makes the DP signal of each Lane can arrive module to be measured after cable simultaneously; DP signal driver module is for adjusting output electrical characteristic and the transmission characteristic of the DP vision signal of each Lane.
Preferably, above-mentioned each DP Video Output Modules all can separate configurations DP video coding parameter and transformation parameter; According to a road DP vision signal of input, the multichannel DP vision signal with different qualities can be generated; Can be used for supplying simultaneously and multiplely there is equal resolution and there is the module of different display characteristic.
For realizing the object of the invention, according to another aspect of the present invention, providing a kind of method that DP vision signal single channel turns multichannel, comprising the steps:
(1) DP agreement is resolved, produce DP group bag data;
(2) according to decoding relevant parameter and DP group bag data, DP parallel demodulation bus data to be decoded, union operation, recover the DP benchmark image signal of image signal source;
Wherein, decoding relevant parameter comprises VESA, JEIDA transmission standard, 6 ~ 10bit image tonescale, synchronizing signal forward and reverse, transmission Lane number;
(3) above-mentioned DP benchmark image signal is converted to rgb video signal;
(4) the above-mentioned rgb video signal data of buffer memory; Meanwhile, horizontal resolution and the vertical resolution of its image is gone out according to the synchronization signal detection of benchmark image;
(5) the some screen clock signal of module to be measured corresponding to each passage is obtained according to the time sequence parameter of the resolution of the DP benchmark image module to be measured corresponding with output channel; Receive the output channel view data of buffer memory according to this some screen clock signal, and according to the Image Coding parameter of the module to be measured preset, output channel view data is converted to the some screen RGB picture signal that each passage is corresponding;
(6) according to DPLane number, the Lane data array parameter of module to be measured, above-mentioned some screen RGB picture signal is carried out segmentation, the restructuring of each Lane data, bit resets, and produces the DP parallel video signal that each exports Lane;
(7) adjust each clock of DP vision signal inside exporting Lane and time delay of data-signal, make the DP vision signal of all Lane all can arrive DP liquid crystal module to be measured after stube cable simultaneously.
Preferably, above-mentioned DP vision signal single channel turns the method for multichannel, also comprises the steps: after step (7)
Output electrical characteristic and transmission characteristic adjustment are carried out to the DP vision signal of each Lane after time delay adjustment, makes the quality of the DP vision signal of each Lane arriving module to be measured and signal amplitude all can reach module and receive requirement; Wherein, output electrical characteristic and transmission characteristic adjustment comprise preemphasis adjustment, the adjustment of driving intensity, the electric range-adjusting of DP, Slew Rate adjust and output impedance adjusts.
Preferably, above-mentioned DP vision signal single channel turns the method for multichannel, and the single channel DP vision signal of its input is from image signal source; Before step (2), also comprise the DP vision signal that image signal source is sent and adjust and the step of demodulation, specific as follows:
A () receives the DPLane vision signal that image signal source sends, be terminated, impedance matching and signal equalization and amplification to the input signal of each Lane;
B () is according to DP electrical standard, signal decision and reconstruction are carried out to each LaneDP signal after step (a) adjustment, eliminate input signal overshoot, undershoot and burr, export the DP vision signal with standard electrical characteristic, to avoid interference the erroneous judgement causing subsequent module;
C () processes the above-mentioned delay had between the clock of each Lane inside of DP vision signal of standard electrical characteristic and data-signal, make to keep between each data-signal, between data-signal with clock signal aliging;
In this step, because the delay variance of each Lane is different, the internal clocking of each Lane, data delay are adjusted respectively;
D () adopts the clock signal of each Lane to sample and demodulation to data-signal parallel in corresponding Lane, obtain the DP parallel demodulation bus data of each Lane.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
(1) adopt DP vision signal single channel provided by the invention to turn the apparatus and method of multichannel, according to 1 road DP vision signal, the DP vision signal that multichannel is used for the test of a large amount of liquid crystal module point screen can be obtained, realize the expansion to DP vision signal;
(2) DP vision signal single channel provided by the invention turns the device of multichannel, carries out Lag synchronization control and signal reconstruction, eliminate the reception mistake because transmission cable and external disturbance may cause to the DP vision signal of input;
(3) DP vision signal single channel provided by the invention turns the device of multichannel, and multiple output interface can export DP vision signal simultaneously, and due to each DP Video Output Modules independence mutually, therefore independent of one another between the DP vision signal of each road, do not interfere with each other; Each DP Video Output Modules all can adjust separately image time sequence parameter, DP Video coding mode, DP transmits Lane number, output drives, export transmission characteristic, export DP electrical characteristic, export delay parameter; Be applicable to in a large number there is equal resolution but the discrepant module of characteristic under different operating environment, to carry out some screen checking simultaneously;
(4) DP vision signal single channel provided by the invention turns the device of multichannel, and each road DP vision signal of output can use under different operational environments and transmission cable simultaneously; Simple to operate, without the need to other auxiliary equipment, be applicable to large scale test;
(5) DP vision signal single channel provided by the invention turns the device of multichannel, and FPGA (field programmable logic array) chip can be adopted to realize, and has reliable operation, cheap, the feature of being convenient to later maintenance and upgrading.
Accompanying drawing explanation
Fig. 1 is the functional block diagram that DP vision signal single channel provided by the invention turns multiple-pass unit;
Fig. 2 is the functional block diagram that DP vision signal single channel that the embodiment of the present invention provides turns multiple-pass unit;
Fig. 3 is the DP video reception module diagram in the embodiment of the present invention;
Fig. 4 is the DP Video Output Modules schematic diagram in the embodiment of the present invention;
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein: 1-human-machine interface module, 2-receives matching module, 3-electrically rebuilds module, 4-time delay alignment module, 5-demodulation module, 6-DP protocol module, 7-DP Video decoding module, 8-DP turns RGB module, 9-RGB view data cache module, 10-RGB image resolution ratio detection module, the local image sequence generation module of 11-, 12-output channel view data cache module, 13-RGB image generating module, 14-DP vision signal modular converter, 15-DP time delay adjusting module, 16-DP signal driver module, 2-1-first receives matched sub-block, 2-2-second receives matched sub-block, 2-N-N receives matched sub-block, 3-1-first electrically rebuilds submodule, 3-2-second electrically rebuilds submodule, 3-N-N electrically rebuilds submodule, 4-1-first time delay alignment submodule, 4-2-second time delay alignment submodule, 4-N-N time delay alignment submodule, 5-1-first demodulation submodule, 5-2-second demodulation submodule, 5-N-N demodulation submodule, 15-1-the one DP time delay adjustment submodule, 15-2-the 2nd DP time delay adjustment submodule, 15-N-NDP time delay adjustment submodule, 16-1-the one DP signal driven element module, 16-2-the 2nd DP signal driven element module, 16-N-NDP signal driven element module.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each execution mode of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
DP vision signal single channel provided by the invention turns multiple-pass unit, its functional block diagram as shown in Figure 1, comprise a DP video signal input interface, DP video control signal input interface, a multiple DP video signal output interface and solidify DP protocol module 6 in programmable logic device, DP Video decoding module 7, DP turn RGB module 8, rgb image data cache module 9, RGB image resolution ratio detection module 10 and multiple DP Video Output Modules;
Wherein, DP protocol module 6 is connected with DP Video decoding module 7, DP Video decoding module 7 and DP turn RGB module 8 and are connected, DP turns RGB module 8 and is connected with RGB image resolution ratio detection module 10 and rgb image data cache module 9, and RGB image resolution ratio detection module 10 is connected with each DP Video Output Modules with rgb image data cache module 9; Each DP Video Output Modules is parallel independent, noiseless each other, and can respective independent parameters;
Wherein, DP Video decoding module 7 couples described DP video signal input interface by DP video signal input terminal, and DP protocol module 6 and each DP Video Output Modules all couple described video control signal input interface by DP video control signal input terminal; Each DP Video Output Modules has multiple LaneDP VT, each LaneDP VT couples DP video signal output interface by DP video signal output terminal, by DP video signal output interface DP vision signal is sent to the DP liquid crystal module to be measured in respective channel.
Shown in Fig. 2, be the functional block diagram that DP vision signal single channel that the embodiment of the present invention provides turns multiple-pass unit, comprise human-machine interface module 1, DP protocol module 6, DP Video decoding module 7, DP turn RGB module 8, rgb image data cache module 9, RGB image resolution ratio detection module 10 and multiple DP Video Output Modules;
In the present embodiment, the functional block diagram of DP video reception module as shown in Figure 3, comprises and receives matching module 2, electrically reconstruction module 3, time delay alignment module 4 and demodulation module 5; Receive matching module and comprise N number of reception matched sub-block 2-1 ~ 2-N, electric reconstruction module comprises N number of electric reconstruction submodule 3-1 ~ 3-N, time delay alignment module comprises N number of time delay alignment submodule 4-1 ~ 4-N, and demodulation module comprises N number of demodulation submodule 5-1 ~ 5-N.
In the present embodiment, the functional block diagram of the DP Video Output Modules of passage 1 correspondence as shown in Figure 4, comprises local image sequence generation module 11, output channel view data cache module 12, RGB image generating module 13, DP vision signal modular converter 14, DP time delay adjusting module 15 and DP signal driver module 16; DP time delay adjusting module 15 comprises N number of DP time delay adjustment submodule 15-1 ~ 15-N, and DP signal driver module 16 comprises N number of DP signal driven element module 16-1 ~ 16-N; Wherein, N is greater than 2.
The DP vision signal single channel provided based on the present embodiment turns multiple-pass unit, and realizing DP vision signal single channel, to turn the process of multichannel specific as follows:
(1) outside DP vision signal input parameter and Ge Lu DP vision signal output parameter is received by human-machine interface module 1; Above-mentioned each Parameter Switch is become DP video control signal by human-machine interface module 1;
(2) receive the DPLane vision signal that matching module 2 receives image signal source transmission, each submodule receiving matching module 2 is connected respectively each Lane; In embodiment, submodule 2-1 corresponding Lane0, submodule 2-2 corresponding Lane1 ..., the corresponding Lane (N-1) of submodule 2-N;
Each submodule is terminated and impedance matching to the DP vision signal of each Lane respectively; Under complicated environment for use, transmission characteristic and the suffered interference of the transmission cable of each Lane are inconsistent, can adjust according to the impedance matching value of on-site actual situations to each submodule receiving matching module 2;
Because the DP signal of each Lane exists signal attenuation and distortion when comparatively long range propagation, the each submodule receiving matching module 2 also carries out signal equalization and amplification to each LaneDP vision signal, improve signal amplitude and signal quality, to eliminate by transmitting the image error code caused; The equal adjustable of the balance parameters of each Lane, amplifying parameters;
(3) electrically rebuild module 3 and signal reconstruction is carried out to each LaneDP signal receiving matching module 2 output; Concrete, each submodule electrically rebuilding module 3 is adjudicated according to DP electrical standard each LaneDP signal received and is rebuild, and to eliminate the overshoot of input signal, undershoot, burr, exports the DP vision signal with standard electrical characteristic; Wherein, DP electrical standard comprises the minimum and maximum of the minimum and maximum of high level, low level, signal swing rate, shake;
(4) eliminate the clock of each Lane of DP and the delay of data of electrically rebuilding module 3 output, make to keep between each data-signal, between data-signal with clock signal aliging;
Transmission cable characteristics due to each Lane causes the delay variance of each Lane all not identical; The clock of each Lane, the delay of data are adjusted respectively, makes clock and the alignment of data of each Lane inside;
(5) demodulation module 5 is to the DP signal after each Lane alignment, adopts the clock signal of each Lane to sample and demodulation to each parallel data signal, obtains the parallel demodulation data of each Lane;
In the present embodiment, each submodule of demodulation module 5 has self-calibration function; After the calibration intervals preset, each submodule carries out self calibration respectively, clock signal is correctly sampled and each data-signal of demodulation, to avoid interference the error or drift that cause; For the Lane that interference is more serious, the calibration intervals of the submodule of the module 5 corresponding to it is shorter;
(6) DP protocol module 6 is resolved DP agreement according to video control signal, produces DP group bag data;
(7) DP Video decoding module 7 is according to DP group bag data and decoding parametric, to each Lane parallel demodulation decoding data, union operation, recovers the DP benchmark image signal of image signal source; Wherein, decoding parametric comprises VESA, JEIDA transmission standard, 6 ~ 10bit image tonescale, synchronizing signal forward and reverse, transmission Lane number;
(8) DP turns RGB module 8, by above-mentioned, DP benchmark image signal is converted to rgb video signal;
(9) the above-mentioned rgb video signal of rgb image data cache module buffer memory; The each road DP exported is made to keep continuously uninterrupted; Meanwhile, RGB image resolution ratio detection module 10 is according to its image level of the synchronous signal obtaining of benchmark image and vertical resolution; Wherein, the synchronizing signal of benchmark image comprises VSYNC (field sync signal), HSYNC (line synchronizing signal) and DE (data enable signal);
(10) in embodiment, each DP Video Output Modules is all parallel independent, and each DP Video Output Modules inside has identical submodule, processes identical to the received signal; Be described for DP Video Output Modules 1 below; Local image sequence generation module 11 obtains the some screen clock signal of the module to be measured on corresponding passage 1 according to the time sequence parameter (row field crop, back porch, synchronous pulsewidth) of the resolution of benchmark image and module to be measured; RGB image generating module 13 receives the caching image data of output channel view data cache module 12 output according to this clock signal, according to the Image Coding parameter of the module to be measured of passage 1 correspondence, the point generating the to be measured module corresponding with passage 1 shields RGB picture signal;
Above-mentioned Image Coding parameter comprises VESA, JEIDA standard, 6bit ~ 10bit color range, RGB order, and synchronizing signal is reverse;
(10) above-mentioned some screen RGB picture signal is carried out segmentation, the restructuring of each Lane data by DP vision signal modular converter 14, and bit rearrangement, generates the DP parallel data that each exports Lane;
(11) DP time delay adjusting module 15 adjusts each clock of Lane exported, the time delay of data-signal, and after making output signal stube cable, the DP signal of all Lane arrives module side to be measured all simultaneously;
(12) DP signal driver module 16 output of the DP to each Lane electrical characteristics, transmission characteristics are arranged, and comprise preemphasis, drive intensity, the electric amplitude of DP, Slew Rate, output impedance; Make the multichannel DP vision signal that exports by under the transmission cable of different qualities and interference effect, the signal quality arriving module to be measured and signal amplitude all meet the reception requirement of DP liquid crystal module, guarantee that module can be verified by reliable and stable long screen.
This DP vision signal single channel that embodiment provides turns multiple-pass unit, and for a road DP vision signal of input, exportable multichannel DP vision signal, verifies in being suitable for carrying out module on a large scale; And each road DP vision signal can export simultaneously, but it is independent of one another, do not interfere with each other, its image time sequence parameter, DP Video coding mode, DP transmit Lane number, output drives, export transmission characteristic, export DP electrical characteristic, export the parameters such as time delay all can adjust separately, be applicable to, to a large amount of, there is equal resolution, to there is the module of different qualities under different operating environment, the checking of same time point screen can be carried out.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a DP vision signal single channel turns the device of multichannel, it is characterized in that, described device comprises a DP video signal input interface, DP video control signal input interface, a multiple DP video signal output interface, and solidify DP Video decoding module in a programmable logic device, DP protocol module, DP turn RGB module, RGB image resolution ratio detection module, rgb image data cache module and multiple DP Video Output Modules;
Described programmable logic device has the DP video signal input terminal coupling described DP video signal input interface, the DP video control signal input terminal coupling described DP video control signal input interface and couples multiple DP video signal output terminals of each described DP video signal output interface one by one;
Described DP protocol module is connected with DP Video decoding module, DP Video decoding module and DP turn RGB model calling, DP turns RGB module and is connected with RGB image resolution ratio detection module and rgb image data cache module, and RGB image resolution ratio detection module is connected with each DP Video Output Modules with rgb image data cache module; Each DP Video Output Modules is parallel independent, all can separate configurations DP video coding parameter and transformation parameter; According to a road DP vision signal of input, the multichannel DP vision signal with different qualities can be generated;
Described DP Video decoding module couples described DP video signal input interface by DP video signal input terminal, and DP protocol module and each DP Video Output Modules all couple described video control signal input interface by DP video control signal input terminal; Each described DP Video Output Modules has multiple link DP VT, and each link DP VT couples DP video signal output interface by DP video signal output terminal.
2. device as claimed in claim 1, it is characterized in that, described device also comprises human-machine interface module; Described human-machine interface module has outside display interface and external command input interface, described human-computer interaction module is used for generating DP video control signal according to external command, is sent to DP protocol module and each DP Video Output Modules by described DP video control signal input terminal; Also for the state information of whole device is exported by outside display interface.
3. device as claimed in claim 2, it is characterized in that, described device also comprises DP video reception module; Described DP video reception module is solidified in described programmable logic device, its first end couples described DP video signal input interface by described DP video signal input terminal, second end connects described human-computer interaction module by described DP video control signal input terminal, and the 3rd end is connected with described DP Video decoding module.
4. device as claimed in claim 3, is characterized in that, described DP video reception module comprises reception matching module, electrically rebuilds module, time delay alignment module and demodulation module;
Described reception matching module with electrically rebuild model calling, electrically rebuild module and be connected with time delay alignment module, time delay alignment module is connected with demodulation module; Receive the input of matching module as the first end of DP video reception module, the output of demodulation module is as the 3rd end of DP video reception module; Receive matching module control end, electrically rebuild the control end of module controls end, time delay alignment module control end and demodulation module side by side as the second end of DP video reception module.
5. device as claimed in claim 4, it is characterized in that, described reception matching module comprises multiple reception matched sub-block, and electrically reconstruction module comprises multiple electric reconstruction submodule, time delay alignment module comprises multiple time delay alignment submodule, demodulation module comprises multiple demodulation submodule; Receive matched sub-block, electrically rebuild submodule, time delay alignment submodule is identical with the number of demodulation submodule.
6. device as claimed in claim 5, it is characterized in that, each described demodulation submodule has self-calibration function, can carry out self calibration according to the alignment time interval arranged.
7. device as claimed in claim 1, it is characterized in that, described DP Video Output Modules comprises local image sequence generation module, output channel view data cache module, RGB image generating module, DP vision signal modular converter, DP time delay adjusting module and DP signal driver module;
Described local image sequence generation module is all connected with RGB image generating module with output channel view data cache module, RGB image generating module is connected with DP vision signal modular converter, DP vision signal modular converter is connected with DP time delay adjusting module, and DP time delay adjusting module is connected with DP signal driver module; The input of local image sequence generation module is as the second end of DP Video Output Modules, and the input of output channel view data cache module is as the 3rd end of DP Video Output Modules; The output of DP signal driver module is as the DP VT of DP Video Output Modules.
8. the DP vision signal single channel turning the device of multichannel based on the DP vision signal single channel described in any one of claim 1 to 7 turns a method for multichannel, and it is characterized in that, described method comprises the steps:
(1) DP agreement is resolved, obtain DP group bag data;
(2) according to decoding relevant parameter and DP group bag data, DP parallel demodulation bus data to be decoded, union operation, recover the DP benchmark image signal of image signal source;
(3) described DP benchmark image signal is converted to rgb video signal;
(4) rgb video signal data described in buffer memory; Meanwhile, horizontal resolution and the vertical resolution of its image is gone out according to the synchronization signal detection of benchmark image;
(5) the some screen clock signal of module to be measured corresponding to each passage is obtained according to the time sequence parameter of the resolution of the DP benchmark image module to be measured corresponding with output channel; Receive the output channel view data of buffer memory according to this some screen clock signal, and according to the Image Coding parameter of the module to be measured preset, output channel view data is converted to the some screen RGB picture signal that each passage is corresponding;
(6) according to DPLane number and the Lane data array of module to be measured, described screen RGB picture signal is carried out segmentation, the restructuring of each Lane data, bit rearrangement, generates the DP parallel video signal that each exports Lane;
(7) adjust each clock of DP vision signal inside exporting Lane and time delay of data-signal, make the DP vision signal of all Lane all can arrive DP liquid crystal module to be measured after stube cable simultaneously.
9. DP vision signal single channel as claimed in claim 8 turns the method for multichannel, it is characterized in that, also comprises the steps: after described step (7)
Output electrical characteristic and transmission characteristic adjustment are carried out to the DP vision signal of each Lane adjusted through time delay, makes the quality of the DP vision signal of each Lane arriving module to be measured and signal amplitude all can reach DP module to be measured and receive requirement.
10. DP vision signal single channel as claimed in claim 8 turns the method for multichannel, and it is characterized in that, described DP vision signal single channel turns the method for multichannel, and the single channel DP vision signal of its input is from image signal source; Before step (2), also comprise the DP vision signal that image signal source is sent and adjust and the step of demodulation, specific as follows:
A each LaneDP vision signal that () sends image signal source is terminated, impedance matching and signal equalization and amplification;
B () is according to DP vision signal electrical standard, signal decision and reconstruction are carried out to each LaneDP vision signal after step (a) adjustment, eliminate the overshoot of input signal, undershoot and burr, export the DP vision signal with standard electrical characteristic;
C () processes the described delay had between the clock of each Lane inside of DP vision signal of standard electrical characteristic and data-signal, make to keep between each data-signal, between data-signal with clock signal aliging;
D () adopts the clock signal of each Lane to sample and demodulation to data-signal parallel in corresponding Lane, obtain the DP parallel demodulation bus data of each Lane.
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