CN105405375B - A kind of MIPI vision signals single channel turns the device and method of multichannel - Google Patents
A kind of MIPI vision signals single channel turns the device and method of multichannel Download PDFInfo
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- CN105405375B CN105405375B CN201510890668.2A CN201510890668A CN105405375B CN 105405375 B CN105405375 B CN 105405375B CN 201510890668 A CN201510890668 A CN 201510890668A CN 105405375 B CN105405375 B CN 105405375B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G3/2096—Details of the interface to the display terminal specific for a flat panel
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Abstract
The invention discloses the device and method that a kind of MIPI vision signals single channel turns multichannel, its device includes a MIPI video signal input interface, a MIPI video control signals input interface, multiple MIPI video signal output interfaces, and solidifies in the MIPI Video decoding modules in a PLD, MIPI protocol modules, RGB image resolution ratio detection module, rgb image data cache module, multiple MIPI Video Output Modules；Its method is based on the device, according to the MIPI vision signals all the way of input, MIPI image sequential is rebuild in local each MIPI Video Output Modules, and multichannel MIPI view data is output to by module to be measured from local each MIPI Video Output Modules according to the sequential, realize that MIPI vision signals turn the signal extension function of multichannel all the way；Verified suitable for the extensive module of centering；Because each MIPI Video Output Modules are independent parallel, each road MIPI vision signals can be exported independently simultaneously, and carrying out a screen simultaneously under different operating environment suitable for the discrepant module of identical but characteristic to substantial amounts of resolution ratio verifies.
Description
Technical field
The invention belongs to signal processing technology field, turns multichannel more particularly, to a kind of MIPI vision signals single channel
Device and method.
Background technology
MIPI liquid crystal modules have been widely used in various display devices, have it is wide in variety, complete in specifications, price is low
The advantages of honest and clean；Each module manufacturer is also mass producing various MIPI modules.With the increase of MIPI liquid crystal module demands,
To ensure MIPI liquid crystal module quality, the test checking to MIPI liquid crystal modules is particularly important.
Test checking to MIPI liquid crystal modules needs to use image signal source and is supplied to MIPI liquid to produce benchmark image
Brilliant module, and an existing image signal source can only often supply a small amount of several tested MIPI liquid crystal modules；On a large scale
The test of MIPI liquid crystal modules needs great amount of images signal source, and image signal source is with high costs, and can not realize in a variety of quilts
Survey under environment and the MIPI liquid crystal modules of different qualities are tested simultaneously, the production efficiency for causing test to be verified reduces, production cost
It is high.
For this reason, it may be necessary to a kind of MIPI vision signals expansion scheme, can be regarded according to the MIPI that the image signal source of input provides
Frequency signal, generation multichannel identical MIPI vision signals supply large-scale MIPI liquid crystal modules detection as image signal source；
Available under different test environments, the module of different qualities verify with time point screen.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, turn more the invention provides a kind of MIPI vision signals single channel
The device and method on road, its object is to extend MIPI video signal sources.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of MIPI vision signals single channel turns multichannel
Device, including a MIPI video signal input interface, a MIPI video control signals input interface, multiple MIPI videos
Signal output interface, and solidify in MIPI videos decoding modular converter, MIPI agreement moulds in a PLD
Block, RGB image resolution ratio detection module, rgb image data cache module, multiple MIPI Video Output Modules；This may be programmed and patrols
Collecting device has the MIPI video signal input terminals for coupling above-mentioned MIPI video signal input interfaces, the above-mentioned MIPI videos of coupling
The MIPI video control signals input terminal of control signal input interface and to couple above-mentioned multiple MIPI vision signals one by one defeated
Multiple MIPI video signal output terminals of outgoing interface；
Wherein, MIPI protocol modules are connected with MIPI videos decoding modular converter, MIPI videos decoding modular converter and RGB
Image resolution ratio detection module connects with rgb image data cache module, RGB image resolution ratio detection module and RGB image number
It is connected according to cache module with each MIPI Video Output Modules；Each MIPI Video Output Modules are independent parallel, noiseless between each other,
And it can each be independently arranged parameter；
MIPI videos decode modular converter and couple the MIPI vision signals input by MIPI video signal input terminals
Interface, MIPI protocol modules and each MIPI Video Output Modules described in the coupling of MIPI video control signals input terminal by regarding
Frequency control signal input interface；Each MIPI Video Output Modules have multiple links (Lane) MIPI VTs,
Each link MIPI VTs couple MIPI video signal output interfaces by MIPI video signal output terminals, pass through
MIPI vision signals are sent to the MIPI liquid crystal modules to be measured in respective channel by MIPI video signal output interfaces.
Preferably, above-mentioned MIPI vision signals single channel turns the device of multichannel, in addition to human-machine interface module；Human-machine interface mouth mold
Block has outside display interface and external command input interface；The human-computer interaction module is used to be regarded according to external command generation MIPI
Frequency control signal, MIPI protocol modules and each MIPI video frequency outputs mould are sent to by MIPI video control signal input terminals
Block；It is also used for exporting the status information of whole device by outside display interface.
Preferably, above-mentioned MIPI vision signals single channel turns the device of multichannel, in addition to MIPI video reception modules；The MIPI
Video reception module solidifies in above-mentioned PLD, and its first end passes through the MIPI video signal input terminals coupling
The MIPI video signal input interfaces are connect, the second end connects above-mentioned man-machine by above-mentioned MIPI video control signals input terminal
Interactive module, the 3rd end are connected with above-mentioned MIPI videos decoding modular converter；MIPI video receptions module is used for believing from image
The MIPI vision signals that number source receives carry out electrically adjustment, time delay adjustment and demodulation process, obtain each Lane parallel demodulation number
According to.
Preferably, above-mentioned MIPI vision signals single channel turns the device of multichannel, and its MIPI video receptions module includes reception
With module, electrically rebuild module, delay alignment module and demodulation module；
Wherein, reception matching module is connected with electrically rebuilding module, electrically reconstruction module is connected with the alignment module that is delayed, and is prolonged
When alignment module be connected with demodulation module；Receive first end of the input of matching module as MIPI video reception modules, solution
Threeth end of the output end of mode transfer block as MIPI video reception modules；Receive matching module control terminal, electrically rebuild module control
The control terminal at end processed, delay alignment module control terminal and demodulation module the second end as MIPI video reception modules side by side；
Wherein, matching module is received to be used to the MIPI vision signals of reception be terminated and impedance matching；Electrically rebuild
Module is used to the output signal for receiving matching module is made decisions and lived again according to electrical standard, and obtaining has standard electrical special
The MIPI signals of property；Delay alignment module makes each for the clock signal and data-signal inside each Lane MIPI signals that align
Alignd between data-signal inside Lane, between data-signal and clock signal；Demodulation module is believed using each Lane clock
Number each parallel data-signal is sampled and demodulated, obtain each Lane parallel demodulation bus data.
Preferably, above-mentioned reception matching module includes multiple reception matched sub-blocks, and electrically rebuilding module includes multiple electricity
Gas rebuilds submodule, delay alignment module includes multiple delay alignment submodules, demodulation module includes multiple demodulation submodules；Connect
Receive matched sub-block, electrically reconstruction submodule, delay alignment submodule are identical with the number for demodulating submodule.
Preferably, above-mentioned each demodulation submodule has self-calibration function, can be carried out certainly according to the prover time interval of setting
Calibration so that clock correctly can sample and demodulate each data-signal, error and drift caused by avoiding external environmental interference；When
Some Lane interval of calibration for disturbing demodulation submodule corresponding to the more serious, Lane sets shorter, to improve solution
Adjust the reliability of operation.
Preferably, above-mentioned each MIPI Video Output Modules can separate configurations MIPI video coding parameters and configured transmission；
According to the MIPI vision signals all the way of input, the multichannel MIPI vision signals with different qualities can be generated；Available for supplying simultaneously
To multiple MIPI liquid crystal modules with equal resolution and with different display characteristics.
Preferably, above-mentioned MIPI vision signals single channel turns the device of multichannel, and its MIPI Video Output Modules includes this map
As sequence generation module, output channel view data cache module, RGB image generation module, MIPI vision signal LP (Low
Power) modular converter, MIPI vision signals HS (High Speed) modular converter, MIPI delay adjusting modules and MIPI signals
Drive module；
Wherein, local image sequence generation module and output channel view data cache module produces mould with RGB image
Block is connected, and RGB image generation module is connected with MIPI vision signal LP modular converters and MIPI vision signal HS modular converters；
MIPI vision signal LP modular converters and MIPI vision signal HS modular converters are connected with MIPI delay adjusting modules, and MIPI prolongs
When adjusting module be connected with MIPI signal driver modules；The input of local image sequence generation module is as MIPI video frequency outputs
Second end of module, connect RGB image resolution ratio detection module；The input conduct of output channel view data cache module
3rd end of MIPI Video Output Modules, connect rgb image data cache module；The output end conduct of MIPI signal driver modules
The MIPI VTs of MIPI Video Output Modules；
Wherein, local image sequence generation module is used for the resolution ratio according to benchmark image and MIPI liquid crystal modules to be measured
Time sequence parameter obtains the point screen clock signal of MIPI liquid crystal modules to be measured in respective channel；Output channel view data cache module
For caching image data；RGB image generation module is used for the view data according to above-mentioned point screen clock signal order caching, production
Point screen RGB image signal needed for the module to be measured of raw respective channel；
MIPI vision signal LP modular converters are used to above-mentioned point screen RGB image signal being converted into MIPI LP vision signals；
MIPI vision signals HS (High Speed) modular converter is used to above-mentioned point screen RGB image signal being converted into MIPI HS videos
Signal；MIPI delay adjusting modules are first modulated to each Lane parallel datas, generate serial MIPI vision signals, then right
The delay of clock and data-signal in each Lane is adjusted so that each Lane MIPI signals can arrive simultaneously after cable
Up to module to be measured；MIPI signal driver modules are used for the output electrical characteristic for adjusting each Lane MIPI vision signals and transmission is special
Property.
To realize the object of the invention, according to another aspect of the present invention, there is provided a kind of MIPI vision signals single channel turns
The method of multichannel, comprises the following steps：
(1) MIPI agreements are parsed, produces MIPI group bag datas；
(2) according to the output image characteristic of the image signal source of input, decoding relevant parameter is obtained；According to the related ginseng of decoding
Number and MIPI group bag datas, carry out decoding conversion operation to MIPI parallel demodulations bus data, recover the RGB of image signal source
Benchmark image signal；
Wherein, decoding relevant parameter includes VESA, JEIDA transmission standard, and 6~10bit image tonescales, synchronizing signal is just
Reversely, Lane numbers are transmitted；
(3) above-mentioned RGB benchmark images signal is cached；Meanwhile it is gone out according to the synchronization signal detection of above-mentioned RGB benchmark images
The horizontal resolution and vertical resolution of image；
(4) obtained according to the time sequence parameter of the resolution ratio of said reference image module to be measured corresponding with output channel each logical
The point screen clock signal of module to be measured corresponding to road；According to the RGB benchmark cached on the point screen clock signal Rreceive output passage
Image, and according to the Image Coding parameter of default module to be measured, above-mentioned RGB benchmark images will be exported and be converted into each passage correspondingly
Point screen RGB image signal；
(5) regarded according to each Lane of above-mentioned point screen RGB image signal generation parallel MIPI LP vision signals and MIPI HS
Frequency signal；
(6) each Lane parallel data is modulated, generates serial MIPI vision signals；
(7) delay of the clock and data-signal inside each output Lane MIPI vision signals is adjusted so that all
Lane MIPI vision signals can reach MIPI liquid crystal modules to be measured simultaneously after connecting cable.
Preferably, above-mentioned MIPI vision signals single channel turns the method for multichannel, also comprises the following steps after step (7)：
The MIPI vision signals of each Lane after delay adjusts are carried out exporting electrical characteristic and transmission characteristic adjustment,
So that module can be reached and receive requirement by reaching the quality of each Lane of module to be measured MIPI vision signals and signal amplitude；Its
In, exporting electrical characteristic and transmission characteristic adjustment includes pre-add recanalization, the adjustment of driving intensity, the electric range-adjustings of MIPI, pendulum
Rate adjusts and output impedance adjustment.
Preferably, above-mentioned MIPI vision signals single channel turns the method for multichannel, and its single channel MIPI vision signal inputted comes from
Image signal source；Before step (2), in addition to the step that the MIPI vision signals sent to image signal source are adjusted and demodulated
Suddenly, it is specific as follows：
(a) the MIPI Lane vision signals that image signal source is sent are received, each Lane input signal is terminated,
Impedance matching and signal equalization and amplification, to eliminate image error code caused by transmission；
(b) according to MIPI electrical standards, signal reconstruction is carried out to each Lane MIPI signals after step (a) adjustment,
Eliminate input signal overshoot, undershoot and burr, MIPI vision signal of the output with standard electrical characteristic, to avoid interference from causing
The erroneous judgement of subsequent module；
(c) to the clock inside the above-mentioned each Lane of MIPI vision signals with standard electrical characteristic and data-signal it
Between delay handled, make between each data-signal, keep aliging between data-signal and clock signal；
In this step, because each Lane delay variance is different, internal clocking, data delay difference to each Lane
Adjustment；
(d) data-signal parallel in corresponding Lane is sampled and demodulated using each Lane clock signal, obtained
Each Lane MIPI parallel demodulation bus datas.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) turn the apparatus and method of multichannel using MIPI vision signals single channel provided by the invention, can be regarded according to 1 road MIPI
Frequency signal, the MIPI vision signals that multichannel is used for a large amount of liquid crystal module screen tests are obtained, realize the expansion to MIPI vision signals
Exhibition；
(2) MIPI vision signals single channel provided by the invention turns the device of multichannel, and the MIPI vision signals of input are carried out
Lag synchronization control and signal reconstruction, can effectively eliminate because transmit and external disturbance may caused by receive mistake；
(3) MIPI vision signals single channel provided by the invention turns the device of multichannel, and multiple output interfaces can export simultaneously
MIPI vision signals, and each MIPI Video Output Modules are independent of one another, do not interfere with each other, therefore each road MIPI vision signals exported
Between independently of one another, do not interfere with each other；Each MIPI Video Output Modules can individually adjust image time sequence parameter, MIPI Video codings
Mode, MIPI transmission Lane numbers, output driving, output transmission characteristic, output MIPI electrical characteristics, output delay parameter；It is applicable
In to largely there is equal resolution but the discrepant module of characteristic under different operating environment, while carry out a screen checking；
(4) MIPI vision signals single channel provided by the invention turns the device of multichannel, each road MIPI vision signal energy of output
Used simultaneously under different working environments and transmission cable；It is simple to operate, without other auxiliary equipments, surveyed suitable for extensive
Examination；
(5) MIPI vision signals single channel provided by the invention turns the device of multichannel, using FPGA (field programmable logic battle arrays
Row) chip realize, have reliable operation, it is cheap, be easy to later maintenance and upgrading the characteristics of.
Brief description of the drawings
Fig. 1 is the functional block diagram that MIPI vision signals single channel provided by the invention turns multiple-pass unit；
Fig. 2 is the functional block diagram that MIPI vision signals single channel provided in an embodiment of the present invention turns multiple-pass unit；
Fig. 3 is the MIPI video reception module diagrams in the embodiment of the present invention；
Fig. 4 is the MIPI Video Output Modules schematic diagrames in the embodiment of the present invention；
In all of the figs, identical reference is used for representing identical element or structure, wherein：1- human-machine interface mouth molds
Block, 2- receive matching module, 3- electrically rebuilds module, 4- delays alignment module, 5- demodulation modules, 6-MIPI protocol modules, 7-
MIPI videos decoding modular converter, 8-RGB view data cache module, 9-RGB image resolution ratios detection module, 10- this map
As sequence generation module, 11- output channel view data cache module, 12-RGB image generating modules, 13-MIPI vision signals
LP modular converters, 14-MIPI vision signal HS modular converters, 15-MIPI delay adjusting module, 16-MIPI signal driver modules,
2-1- first receives matched sub-block, 2-2- second receives matched sub-block, 2-N- N receive matched sub-block, 3-1- first
Electrically rebuild submodule, 3-2- second electrically rebuilds submodule, 3-N- N electrically rebuild submodule, the delay alignment of 4-1- first
Submodule, the delay alignment of 4-2- second submodule, 4-N- N delay alignment submodule, 5-1- first demodulate submodule, 5-2- the
Two demodulation submodules, 5-N- N demodulation submodule, the MIPI of 15-1- the first delay adjustment submodule, the MIPI of 15-2- the 2nd delays
Adjust submodule, 15-N- N MIPI delay adjustment submodule, the MIPI signals of 16-1- the first driving submodule, 16-2- second
MIPI signals driving submodule, 16-N- N MIPI signals driving submodule.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
MIPI vision signals single channel provided by the invention turns multiple-pass unit, and its functional block diagram is as shown in figure 1, including one
MIPI video signal input interfaces, a MIPI video control signals input interface, multiple MIPI video signal output interfaces, with
And solidify in the MIPI protocol modules 6 in PLD, MIPI videos decoding modular converter 7, rgb image data caching
Module 8, RGB image resolution ratio detection module 9 and multiple MIPI Video Output Modules；
Wherein, MIPI protocol modules 6 and MIPI videos decoding modular converter 7 are connected, MIPI videos decoding modular converter with
RGB image resolution ratio detection module 9 and rgb image data cache module 8 connect, RGB image resolution ratio detection module 9 and RGB
View data cache module 8 is connected with each MIPI Video Output Modules；Each MIPI Video Output Modules are independent parallel, between each other
It is noiseless, and can each be independently arranged parameter；
MIPI videos decode modular converter 7 and couple the MIPI vision signals input by MIPI video signal input terminals
Interface, MIPI protocol modules 7 and each MIPI Video Output Modules are by described in the coupling of MIPI video control signals input terminal
Video control signal input interface；Each MIPI Video Output Modules have the output of multiple links (Lane) MIPI vision signals
End, each Lane MIPI VTs couple MIPI video signal output interfaces by MIPI video signal output terminals,
The MIPI liquid crystal modules to be measured being sent to MIPI vision signals by MIPI video signal output interfaces in respective channel.
It is the functional block diagram that MIPI vision signals single channel provided in an embodiment of the present invention turns multiple-pass unit shown in Fig. 2, including
Human-machine interface module 1, MIPI protocol modules 6, MIPI videos decoding modular converter 7, rgb image data cache module 8, RGB figures
As resolution ratio detection module 9 and multiple MIPI Video Output Modules；
In the present embodiment, the functional block diagrams of MIPI video reception modules is as shown in figure 3, including receiving matching module 2, electrically
Rebuild module 3, delay alignment module 4 and demodulation module 5；Receiving matching module includes N number of reception matched sub-block 2-1~2-N,
Electrically rebuilding module includes N number of electric reconstruction submodule 3-1~3-N, and delay alignment module includes N number of delay alignment submodule 4-
1~4-N, demodulation module include N number of demodulation submodule 5-1~5-N；
In the present embodiment, the functional block diagram of MIPI Video Output Modules corresponding to passage 1 is as shown in figure 4, including this map
As sequence generation module 10, output channel view data cache module 11, RGB image generation module 12, MIPI vision signals LP
Modular converter 13, MIPI vision signal HS modular converters 14, MIPI delay adjusting modules 15 and MIPI signal driver modules 16；Its
In, MIPI delay adjusting modules 15 include N number of MIPI delay adjustment and wrapped from module 15-1~15-N, MIPI signal driver modules 16
Include N number of MIPI signals driving submodule 16-1~16-N；Wherein, N is more than 2.
The MIPI vision signal single channel provided based on the present embodiment turns multiple-pass unit, realizes that MIPI vision signals single channel turns more
The process on road is specific as follows：
(1) outside MIPI vision signals input parameter and Ge Lu MIPI vision signals are exported by human-machine interface module 1
Parameter Switch is into MIPI video control signals；
(2) receive matching module 2 and receive the MIPI Lane vision signals that image signal source is sent, receive matching module 2
Each submodule corresponds to the signal for receiving each Lane respectively；In embodiment, it is corresponding that submodule 2-1 corresponds to Lane 0, submodule 2-2
Lane 1 ..., submodule 2-N correspond to Lane (N-1)；
Each Lane MIPI vision signals are terminated respectively for each submodule and impedance matching；In complicated use environment
Under, the transmission characteristic of each Lane transmission cable and suffered interference are inconsistent, can be according to on-site actual situations to receiving
The impedance matching value of each submodule of matching module 2 is adjusted；
Because each Lane MIPI signals have signal attenuation and distortion when relatively long distance is transmitted, matching module is received
2 each submodule also carries out signal equalization and amplification to each Lane MIPI vision signals, improves signal amplitude and signal quality,
To eliminate the image error code as caused by transmission；Each Lane balance parameters, amplifying parameters are adjustable；
(3) electrically rebuild module 3 and carry out signal reconstruction to receiving each Lane MIPI signals that matching module 2 exports；Specifically
, each submodule for electrically rebuilding module 3 makes decisions and again according to MIPI electrical standards to each Lane MIPI signals of reception
Build, to eliminate the overshoot of input signal, undershoot, burr, MIPI vision signal of the output with standard electrical characteristic；Wherein,
MIPI electrical standards include high level minimum and maximum value, low level minimum and maximum value, signal swing rate, shake；
(4) delay of the clock electrically rebuild inside each Lane of MIPI that module 3 exports and data is eliminated, is made each
Keep aliging between data-signal inside Lane, between data-signal and clock signal；
Because each Lane transmission cable characteristics difference causes each Lane delay variance to differ；To each Lane
The delay of clock, data adjust respectively, make the clock and alignment of data inside each Lane；
(5) the MIPI signals after demodulation module 5 aligns to each Lane, using each Lane clock signal to each and line number
It is believed that number being sampled and being demodulated, each Lane parallel demodulation data are obtained；
In the present embodiment, each submodule of demodulation module 5 has self-calibration function；After default calibration intervals, each son
Module carries out self calibration respectively so that clock signal correctly samples and demodulated each data-signal, to avoid disturbing caused mistake
Difference or drift；For disturbing more serious Lane, the calibration intervals of the demodulation submodule of the demodulation module 5 corresponding to it are shorter；
(6) MIPI protocol modules 6 parse according to video control signal to MIPI agreements, produce MIPI group bag datas；
(7) MIPI videos decode modular converter 7 according to MIPI groups bag data and decoding parametric, to each Lane parallel demodulations
Data carry out decoding conversion operation, recover the RGB benchmark image signals of image signal source；
Wherein, decoding parametric obtains according to the characteristic of image signal source output image, including VESA, JEIDA transmission standard,
6~10bit image tonescales, forward and reverse, the transmission Lane numbers of synchronizing signal；
(8) above-mentioned RGB benchmark images signal is cached；It is gone out according to the synchronization signal detection of above-mentioned RGB benchmark images simultaneously
The horizontal resolution and vertical resolution of image；Wherein, the synchronizing signal of benchmark image include VSYNC (field sync signal),
HSYNC (line synchronising signal) and DE (data enable signal)；
(9) in embodiment, each MIPI Video Output Modules are parallel independent, have phase inside each MIPI Video Output Modules
With submodule, it is identical to the signal transacting that receives；Illustrated below by taking the first MIPI Video Output Modules as an example；
Resolution ratio and output of the local image sequence generation module 10 according to said reference image in first MIPI Video Output Modules
The time sequence parameter (row field crop, back porch, synchronous pulsewidth) of module to be measured corresponding to passage obtains module to be measured corresponding to each passage
Point screen clock signal；RGB image generation module 12 caches mould according to the point screen clock signal Rreceive output channel image data
The caching rgb image data that block 11 exports, and according to the Image Coding parameter of default module to be measured, by above-mentioned RGB reference maps
The point screen RGB image signal as corresponding to being converted into each passage；
(10) MIPI vision signals LP modular converters 13 are according to the parallel of each Lane of above-mentioned point screen RGB image signal generation
MIPI LP vision signals, MIPI vision signal HS modular converters 14 according to above-mentioned point screen RGB image signal generation it is each Lane's and
Row MIPI HS vision signals；
(11) MIPI delays adjusting module is first modulated to each Lane parallel data, generates serial MIPI videos letter
Number；The delay of the clock and data-signal inside each output Lane MIPI vision signals is adjusted again so that all Lane
MIPI vision signals can reach MIPI liquid crystal modules to be measured simultaneously after connecting cable；
(13) MIPI output electrical characteristic, transmission characteristic of the MIPI signal driver modules 16 then to each Lane are set
Put, including preemphasis, the setting for driving intensity, the electric amplitudes of MIPI, Slew Rate and output impedance；So that the multichannel MIPI of output
Vision signal reaches the signal quality and signal width of module to be measured under the transmission cable and interference effect by different qualities
Value is satisfied by the reception requirement of MIPI liquid crystal modules, it is ensured that module can reliable and stable prolonged point screen checking.
This MIPI vision signals single channel that embodiment provides turns multiple-pass unit, believes for the videos of MIPI all the way of input
Number, exportable multichannel MIPI vision signals, suitable for being verified on a large scale in being carried out to module；And each road MIPI vision signals can be same
When export, but independently of one another, do not interfere with each other；Image time sequence parameter, the MIPI Video codings of each road MIPI vision signals of output
The parameters such as mode, MIPI transmission Lane numbers, output driving, output transmission characteristic, output MIPI electrical characteristics, output delay
Individually adjustment, suitable for largely there is equal resolution, can to the module with different qualities under different operating environment,
Verified with time point screen.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (10)
1. a kind of MIPI vision signals single channel turns the device of multichannel, it is characterised in that described device includes a MIPI video and believed
Number input interface, a MIPI video control signals input interface, multiple MIPI video signal output interfaces, and solidify in one
MIPI videos decoding modular converter, MIPI protocol modules, RGB image resolution ratio detection module in PLD,
Rgb image data cache module, multiple MIPI Video Output Modules；There is the PLD coupling MIPI to regard
MIPI video signal input terminals, the MIPI of the coupling MIPI video control signals input interface of frequency signal input interface are regarded
Frequency control signal input and the multiple MIPI vision signals for coupling each MIPI video signal output interfaces one by one
Lead-out terminal；
The MIPI protocol modules are connected with MIPI videos decoding modular converter, MIPI videos decoding modular converter and RGB image
Resolution ratio detection module connects with rgb image data cache module, and RGB image resolution ratio detection module and rgb image data delay
Storing module is connected with each MIPI Video Output Modules；Each MIPI Video Output Modules are independent parallel, can separate configurations MIPI regard
Frequency coding parameter and configured transmission；According to the MIPI vision signals all the way of input, the multichannel MIPI with different qualities can be generated
Vision signal；
The MIPI videos decoding modular converter couples the MIPI vision signals by MIPI video signal input terminals and inputted
Interface, MIPI protocol modules and each MIPI Video Output Modules described in the coupling of MIPI video control signals input terminal by regarding
Frequency control signal input interface；Each MIPI Video Output Modules have multiple link MIPI VTs, respectively
Link MIPI VTs couple MIPI video signal output interfaces by MIPI video signal output terminals；
The MIPI protocol modules are used to parse MIPI agreements according to video control signal, produce MIPI group bag datas；
MIPI videos decoding modular converter is used to, according to MIPI groups bag data and decoding parametric, carry out each link parallel demodulation data
Conversion operation is decoded, recovers the RGB benchmark image signals of image signal source；The RGB image resolution ratio detection module is used for
Go out the horizontal resolution and vertical resolution of its image according to the synchronization signal detection of the RGB benchmark images；Rgb image data
Cache module is used to cache the RGB benchmark images signal；Each MIPI Video Output Modules are used for according to the one of input
Multichannel MIPI vision signal of the road MIPI vision signals generation with different qualities.
2. device as claimed in claim 1, it is characterised in that described device also includes human-machine interface module；The human-machine interface
Mouth mold block has outside display interface and external command input interface；The human-machine interface module is used to be generated according to external command
MIPI video control signals, MIPI protocol modules are sent to by the MIPI video control signals input terminal and each MIPI is regarded
Frequency output module；It is also used for exporting the status information of whole device by outside display interface.
3. device as claimed in claim 2, it is characterised in that described device also includes MIPI video reception modules；It is described
MIPI video reception modules solidify in the PLD, and its first end passes through the MIPI video signal input terminals
Son couples the MIPI video signal input interfaces, and the second end passes through described in MIPI video control signals input terminal connection
Human-machine interface module, the 3rd end are connected with MIPI videos decoding modular converter；
The MIPI video receptions module is used to carry out electrically adjustment, time delay to the MIPI vision signals received from image signal source
Adjustment and demodulation process, obtain the parallel demodulation data of each link.
4. device as claimed in claim 3, it is characterised in that the MIPI video receptions module include receive matching module,
Electrically rebuild module, delay alignment module and demodulation module；
The reception matching module is connected with electrically rebuilding module, electrically reconstruction module is connected with delay alignment module, delay pair
Neat module is connected with demodulation module；First end of the input of matching module as MIPI video reception modules is received, solves mode transfer
Threeth end of the output end of block as MIPI video reception modules；Reception matching module control terminal, electrically reconstruction module control terminal,
Be delayed control terminal the second end as MIPI video reception modules side by side of alignment module control terminal and demodulation module；
The reception matching module is used to the MIPI vision signals of reception be terminated and impedance matching；Module is electrically rebuild to use
In the output signal for receiving matching module is made decisions and lived again according to electrical standard, obtain with standard electrical characteristic
MIPI signals；Delay alignment module makes each link for clock signal and data-signal inside each link MIPI signals that align
Alignd between internal data-signal, between data-signal and clock signal；Demodulation module uses the clock signal pair of each link
Each parallel data-signal is sampled and demodulated, and obtains the parallel demodulation bus data of each link.
5. device as claimed in claim 4, it is characterised in that the reception matching module includes multiple receive and matches submodule
Block, electrically rebuilding module includes multiple alignment submodules that are delayed including multiple electric reconstruction submodules, delay alignment module, demodulates
Module includes multiple demodulation submodules；Receive matched sub-block, electrically rebuild submodule, delay alignment submodule and demodulation submodule
The number of block is identical.
6. device as claimed in claim 5, it is characterised in that each demodulation submodule has self-calibration function, can root
Self calibration is carried out according to the prover time interval of setting.
7. device as claimed in claim 1, it is characterised in that the MIPI Video Output Modules produce including local image sequential
Raw module, output channel view data cache module, RGB image generation module, MIPI vision signal LP modular converters, MIPI are regarded
Frequency signal HS modular converters, MIPI delay adjusting modules and MIPI signal driver modules；
The local image sequence generation module and output channel view data cache module connect with RGB image generation module
Connect, RGB image generation module and MIPI vision signal LP modular converters are connected with MIPI vision signal HS modular converters；MIPI is regarded
Frequency signal LP modular converters and MIPI vision signal HS modular converters are connected with MIPI delay adjusting modules, MIPI delay adjustment
Module is connected with MIPI signal driver modules；The input of local image sequence generation module is as MIPI Video Output Modules
Second end；Threeth end of the input of output channel view data cache module as MIPI Video Output Modules；MIPI signals
MIPI VT of the output end of drive module as MIPI Video Output Modules；
The local image sequence generation module is used for resolution ratio and MIPI liquid crystal modules sequential to be measured according to benchmark image
The point screen clock signal of MIPI liquid crystal modules to be measured in gain of parameter respective channel；Output channel view data cache module is used for
Caching image data；RGB image generation module is used for the view data according to above-mentioned point screen clock signal order caching, generation pair
Answer the point screen RGB image signal needed for the module to be measured of passage；MIPI vision signal LP modular converters are used to the point shielding RGB
Picture signal is converted into MIPI LP vision signals；MIPI vision signal HS modular converters are used to state a screen RGB image letter by described
Number it is converted into MIPI HS vision signals；MIPI delay adjusting modules are used to first be modulated each chain channel parallel data, generation string
Capable MIPI vision signals, the then delay to clock and data-signal in each link are adjusted so that each link
MIPI signals can reach module to be measured simultaneously after cable；MIPI signal driver modules are used for the MIPI videos for adjusting each link
The output electrical characteristic and transmission characteristic of signal.
8. a kind of MIPI vision signal single channel based on described in any one of claim 1 to 7 turns the MIPI videos of the device of multichannel
The method that signal single channel turns multichannel, it is characterised in that methods described comprises the following steps：
(1) MIPI agreements are parsed, produces MIPI group bag datas；
(2) according to the output image characteristic of the image signal source of input, decoding relevant parameter is obtained；According to decoding relevant parameter with
MIPI group bag datas, decoding conversion operation is carried out to MIPI parallel demodulations bus data, recovers the RGB benchmark of image signal source
Picture signal；
(3) the RGB benchmark images signal is cached；Meanwhile its image is gone out according to the synchronization signal detection of the RGB benchmark images
Horizontal resolution and vertical resolution；
(4) each passage pair is obtained according to the time sequence parameter of the resolution ratio of benchmark image module to be measured corresponding with output channel
The point screen clock signal for the module to be measured answered；Shield the RGB reference maps cached on clock signal Rreceive output passage according to the point
Picture, and according to the Image Coding parameter of default module to be measured, the RGB benchmark images will be exported and be converted into corresponding to each passage
Point screen RGB image signal；
(5) the parallel MIPI LP vision signals of each link of RGB image signal generation are shielded according to the point and MIPI HS videos is believed
Number；
(6) parallel data of each link is modulated, generates serial MIPI vision signals；
(7) delay of the clock and data-signal inside the MIPI vision signals of each output link is adjusted so that all chains
The MIPI vision signals on road can reach MIPI liquid crystal modules to be measured simultaneously after connecting cable.
9. the method that MIPI vision signals single channel as claimed in claim 8 turns multichannel, it is characterised in that in the step (7)
Also comprise the following steps afterwards：
The MIPI vision signals of each link after delay adjusts are carried out exporting electrical characteristic and transmission characteristic adjustment so that
Module can be reached and receive requirement by reaching the quality of the MIPI vision signals of each link of module to be measured and signal amplitude；Wherein,
Output electrical characteristic and transmission characteristic adjustment include pre-add recanalization, the adjustment of driving intensity, the electric range-adjustings of MIPI, Slew Rate tune
The adjustment of whole and output impedance.
10. the method that MIPI vision signals single channel as claimed in claim 8 turns multichannel, it is characterised in that the MIPI videos
The method that signal single channel turns multichannel, its single channel MIPI vision signal inputted come from image signal source；Before step (2), also wrap
The step of MIPI vision signals sent to image signal source are adjusted and demodulated is included, it is specific as follows：
(a) input signal of each link sent to image signal source be terminated, impedance matching and signal equalization and amplification；
(b) according to MIPI electrical standards, signal reconstruction is carried out to each link MIPI signals after step (a) adjustment, eliminated
Input signal overshoot, undershoot and burr, MIPI vision signal of the output with standard electrical characteristic；
(c) between the clock and data-signal of the above-mentioned each link inside of MIPI vision signals with standard electrical characteristic
Delay is handled, and is made between each data-signal, is kept aliging between data-signal and clock signal；
(d) data-signal parallel in respective link is sampled and demodulated using the clock signal of each link, obtain each chain
The MIPI parallel demodulation bus datas on road.
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| CN109714621A (en) * | 2019-01-02 | 2019-05-03 | 西安微电子技术研究所 | A kind of multichannel dynamic video analogy method and its processing system that timing is configurable |
| CN114520932B (en) * | 2020-11-20 | 2023-12-12 | 康佳集团股份有限公司 | 8K point screen method, FPGA chip, television and storage medium |
| CN112382224B (en) * | 2021-01-15 | 2021-04-06 | 武汉精测电子集团股份有限公司 | Aging test method and system for module |
| CN114512093A (en) * | 2022-02-25 | 2022-05-17 | 杭州海康威视数字技术股份有限公司 | LED drive circuit and LED display device |
| CN114845071A (en) * | 2022-07-04 | 2022-08-02 | 北原科技(深圳)有限公司 | Single-camera multi-channel USB video output system and hardware upgrading method |
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