CN104240659B - The method and apparatus realizing COMMAND pattern MIPI signal by bridging chip - Google Patents
The method and apparatus realizing COMMAND pattern MIPI signal by bridging chip Download PDFInfo
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- CN104240659B CN104240659B CN201410413808.2A CN201410413808A CN104240659B CN 104240659 B CN104240659 B CN 104240659B CN 201410413808 A CN201410413808 A CN 201410413808A CN 104240659 B CN104240659 B CN 104240659B
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Abstract
The invention discloses a kind of method and apparatus realizing COMMAND pattern MIPI signal by bridging chip, its device includes that LVDS turns RGB block, COMMAND mode data buffer, image detection module, cuts figure command module, COMMAND control module and COMMAND mode data processing module, for LVDS video signal being converted into the COMMAND pattern discernible data bus interface signal of bridging chip, show for having the liquid crystal module of MIPI interface.Bridging chip of the present invention realizes, and bridging chip can be demodulated to MIPI video signal by what RGB screen signal integrity did not missed;VESA/JEIDA LVDS video signal can be converted into rgb signal by the present invention, is then converted into MIPI signal by bridging chip;Adapt to the demand of different liquid crystal module resolution.
Description
Technical field
The invention belongs to display field and the technical field of measurement and test of liquid crystal module, in particular to one
The method and apparatus realizing COMMAND pattern MIPI signal by bridging chip.
Background technology
MIPI (mobile Industry Processor Interface) is Mobile Industry Processor Interface
Abbreviation, by including the company such as including ARM, Samsung, Intel MIPI alliance initiate be
The open standard that Mobile solution processor is formulated.Bridging chip in VIDEO pattern or
When the signal of input being converted into MIPI by internal changing the mechanism under COMMAND pattern
Sequence interface signal.VIDEO pattern refers to that main frame is transferred to liquid crystal module and uses real-time pixel stream,
And be the pattern with high-speed signal transmission, and COMMAND pattern refers to use and sends life
Order and data are to the pattern transmitting signal with the controller that display caches.VIDEO pattern master
To carry out operating for the liquid crystal module not having frame buffer (buffer area) in driving chip,
Pixel data is sent according to the refreshing frequency sequential of liquid crystal module;The main pin of COMMAND pattern
The CPU screen that driving is contained within frame buffer (buffer area) operates, and master control is only at needs
Change display image when send pixel data, other time driving chip oneself from inside
Buffer (buffer area) inner taking-up data show.
At present, by bridging chip, LVDS video signal being converted into MIPI signal can only be real
Existing VIDEO pattern, it is impossible to realize COMMAND pattern.When showing of MIPI liquid crystal module
Showing that content does not changes (or when local changes), the central processing unit of display system just should switch
To low-power consumption mode, and the link between processor and display only activates needs when,
This time, COMMAND pattern was just well suited for this situation.
Image circle it is docked to the most for a long time for having the liquid crystal module of MIPI interface
Face, being now accomplished by a kind of device can stop for a long time in the liquid crystal module with MIPI interface
When an interface, bridging chip is in COMMAND mode state.
Summary of the invention
Cannot at present LVDS video signal being converted into MIPI signal by bridging chip
The problem realizing COMMAND pattern, the present invention is proposed one and is realized by bridging chip
The method and apparatus of COMMAND pattern MIPI signal, it is simple to operate, low in energy consumption, can
High by property.
For achieving the above object, the one designed by the present invention is realized by bridging chip
The method of COMMAND pattern MIPI signal, it is characterized in that, comprises the steps:
1) LVDS signal is converted to rgb video signal;
2) by the first frame image data caching in described rgb video signal;
3) view data of described caching is converted to data bus interface (Data Bus
Interface) signal transmitting to bridging chip, described data/address bus is connect by described bridging chip
Message number is converted to the transmission of MIPI signal and shows to liquid crystal module;
4) next frame view data in described rgb video signal and former frame whether phase is judged
With, when next frame image data and former frame are not simultaneously emitted by cutting figure instruction;
5) according to the next frame image cutting figure instruction buffer rgb video signal;
6) step 3 is repeated) to step 5).
Preferably, described step 1) the most also include configuration bridging chip and liquid crystal module extremely
The step of COMMAND pattern.
Preferably, described step 2) in by the first two field picture number in described rgb video signal
During according to caching, frame section start testing mechanism is set, after frame head being detected, starts to record data, detection
To stopping record data during next frame frame head.Frame section start testing mechanism ensures the number of write every time
According to being the view data that the frame from frame head to postamble is complete.
A kind of device being realized COMMAND pattern MIPI signal by bridging chip, including
LVDS turn RGB block, COMMAND mode data buffer, image detection module,
Cut figure command module, COMMAND control module and COMMAND mode data and process mould
Block;Described LVDS turns RGB block for LVDS video signal is resolved to rgb video
Signal;Described image detection module is for receiving the view data in rgb video signal and examining
Whether altimetric image changes, and send when image changes cut figure instruction;Described cut figure
Command module is used for detecting cuts startup COMMAND control module after figure instruction;Described
COMMAND mode data buffer is used for receiving rgb video signal and storing a two field picture
Data;Described COMMAND control module is used for reading COMMAND mode data caching
The view data of rgb signal sending to COMMAND mode data processing module in device,
After being sent, described COMMAND control module is in holding state;Described
COMMAND mode data processing module is for being converted into data/address bus by rgb video signal
Sending to bridging chip after interface (Data Bus Interface) signal, described bridging chip will
Data bus interface signal sends after being converted into MIPI signal to liquid crystal module and shows.
Further, also include that MIPI configures modular unit, for according to upper strata instruction interface
Order configuration bridging chip, and by its MIPI seam of link configuration of bridging chip
The instruction of spreading its tail of liquid crystal module.
Further, described COMMAND mode data processing module is according to user setup
COMMAND control interface configuration information change data bus interface clock signal frequency
Rate is to control the aobvious figure speed of liquid crystal module.
Further, described COMMAND mode data processing module regards at reception RGB
Frequently control interface from the COMMAND of user setup before the view data in signal and obtain figure
The resolution information of picture, and the resolution information of image is sent to bridging chip
Bridging chip of the present invention realizes, and RGB screen signal integrity can not missed by bridging chip
It is demodulated to MIPI video signal;FPGA and bridging chip are applied in combination and device performance can be made more may be used
Lean on, integrated more efficient and operate also easy.
The beneficial effects of the present invention is:
1) VESA/JEIDA LVDS video signal can be converted into RGB letter by the present invention
Number, then it is converted into MIPI signal by bridging chip;
2) present invention is except starting most by MIPI configuration module bridging chip and liquid crystal mould
Group is done outside some initialized configurations, and other function is all by FPGA complete independently, reduces
Mutual between FPGA and high-level interface, makes to realize framework simpler, apparent;
3) present invention can be by adjusting the ginseng of COMMAND mode data buffer memory unit
Number, adapts to the demand of different liquid crystal module resolution.COMMAND pattern data store list
Unit's the most only storage one frame data, and the most only again store new when image changes
Frame data, other times will not do any operation, thus reduce the heating power consumption of device;
4) present invention realizes COMMAND pattern by FPGA, improves liquid crystal module
Aobvious figure speed, and detect image automatically by image detection module within FPGA and be
No change, and replacement mechanism control module is to bridging chip configuration order, thus improve
Cut figure speed, make the operability of system strengthen;
5) present invention is possible not only to control the aobvious figure of liquid crystal module under COMMAND pattern
Speed, and the number of liquid crystal display screen pixel can be controlled, thus contribute to module manufacturer to liquid
Brilliant screen carries out location and the detection thereof of extraordinary image vegetarian refreshments.
Accompanying drawing explanation
Fig. 1 is that the present invention realizes COMMAND pattern MIPI signal by bridging chip
The structural representation of device.
Fig. 2 is COMMAND mode data processing module and the interface of bridging chip in Fig. 1
Sequential chart.
In figure: 1.LVDS turns RGB block, 2.COMMAND mode data buffer,
3. image detection module, 4. cuts figure command module, 5.COMMAND control module, 6.
COMMAND mode data processing module, 7.MIPI configures modular unit, 8. bridging chip,
9. liquid crystal module.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As it is shown in figure 1, one of the present invention realizes COMMAND pattern MIPI by bridging chip
The device of signal, turns RGB block 1, COMMAND mode data caching including LVDS
Device 2, image detection module 3, cut figure command module 4, COMMAND control module 5,
COMMAND mode data processing module 6 and MIPI configures modular unit 7.
LVDS turns RGB block 1 for LVDS video signal resolves to rgb video letter
Number, parsing and include demodulation clock, pixel clock, row data enable signal, and frame data enable
Signal, and order and data enable signal, after having converted, signal is sent into image detection mould
Block and COMMAND mode data buffer 2.
COMMAND mode data buffer 2 is used for receiving rgb video signal and storing one
Frame image data.COMMAND mode data buffer 2 can be to the rgb video received
Signal stores frame data, comprises the capacity of a width picture, after a frame data storage,
COMMAND mode data buffer 2 will stop the write of entry data, only image inspection
Survey module sends after cutting figure instruction, and now COMMAND mode data buffer 2 just can be held
The newly written new frame signal of starting weight, it should be noted that, LVDE turns RGB block 1 meeting
Send the image to COMMAND mode data buffer 2, COMMAND pattern count always
Have a frame section start testing mechanism, it is ensured that be written to according to buffer 2 is internal every time
Data inside COMMAND mode data buffer 2 are from frame head to postamble, be one complete
Whole image.
Image detection module 3 is for receiving the view data in rgb video signal detection figure
Seem no changing, and send when image changes cut figure instruction.Image detection module
Each frame signal can be detected by 3 in real time, and image detection module 3 first can store a frame letter
Partial pixel point in number, is then real time contrast, when pixel information with a frame signal below
Time inconsistent, image detection module 3 can send one cut figure instruct to cut figure command module 4,
COMMAND mode data buffer 2 and COMMAND control module 5, informs these
Module map picture there occurs change, can carry out associative operation.Image detection module 3 can will cut figure
Instruction keeps the time of a frame, and after treating a frame time, module can restart to carry out image inspection
Survey.
Cut figure command module 4 and start COMMAND control mould after figure instructs for detecting to cut
Block 5.Cut figure command module 4 detect cut figure instruction after, replace MIPI configure modular unit
7, send configuration-direct to bridging chip 8, as cutting figure instruction input, this reduces with
Mutual between upper layer module, simplifies control mechanism, makes to cut figure speed the most excellent.
COMMAND control module 5 is used for reading COMMAND mode data buffer 2
The view data of middle rgb signal also sends to COMMAND mode data processing module 6,
It is sent rear COMMAND control module 5 and is in holding state.COMMAND controls
Module 5 be controlled by image detection module 3, cut figure detection module 4 and COMMAND control connect
Mouthful.Associating between COMMAND control module 5 with COMMAND control interface is as follows:
When MIPI configuration modular unit 7 is when configuring bridging chip 8, COMMAND
Control module 5 can be by data path drop, now COMMAND mode data processing module 6
Work can be stagnated, send relevant data also will not to bridging chip 8;When MIPI configures mould
After bridging chip 8 configuration is terminated by module unit 7, COMMAND controls interface can send one
Instruction is to COMMAND control module 5, and now COMMAND control module 5 is by data
Link is open-minded, and COMMAND mode data processing module 6 also begins to work normally,
Discernible clock signal is sent to bridging chip 8.COMMAND control module 5 and image
Detection module 3 is as follows with associating of cutting figure command module 4: cut when image detection module 3 sends
When figure instruction is to COMMAND control module 5, COMMAND control module 5 can drop
COMMAND mode data path, cuts figure command module 4 and the most integrated order is passed through
COMMAND mode data processing module 6 is sent to bridging chip 8, after order is sent
Inform that COMMAND control module 5 opens data path, make data signal pass through
COMMAND mode data processing module 6 is sent to bridging chip 8.
COMMAND mode data processing module 6 is for being converted into number by rgb video signal
According to sending after bus interface signals to bridging chip 8, data bus interface is believed by bridging chip 8
Send after number being converted into MIPI signal to liquid crystal module 9 and show.COMMAND mode data
Rgb signal is changed into the discernible clock signal of bridging chip 8 by processing module 6, then
It is sent to bridging chip 8, is ultimately transferred to liquid crystal module 9, at COMMAND mode data
Reason module 6 controls the rate instruction of interface configuration according to COMMAND, controls liquid crystal module
Picture display rate, the pixel of Interface Controller liquid crystal module is set according to liquid crystal module resolution
Number, the two function contributes to module manufacturer and searches whether liquid crystal module has extraordinary image vegetarian refreshments etc.
Problem.
MIPI configuration modular unit 7 configures bridging chip for the order according to upper strata instruction interface
8.MIPI configures modular unit, by the order configuration bridging chip of upper strata instruction input interface
8, and the instruction of spreading its tail of the liquid crystal module by the link configuration MIPI seam of bridging chip 8.
In the present invention, bridging chip 8 can be realized by MIPI bridging chip.
Utilize said apparatus to be accomplished by bridging chip and realize COMMAND pattern MIPI signal
The specifically comprising the following steps that of method
0) MIPI configuration modular unit 7 configures bridging chip 8 to COMMAND pattern also
Liquid crystal module 9 is spread its tail configuration.MIPI configuration modular unit 7 configures bridging chip 8 He
During liquid crystal module 9 to COMMAND pattern, COMMAND control module 5 is made to be in pass
Closed state, is then turned on COMMAND control module 5 after having configured.
Liquid crystal module resolution arranges interface and can set according to the resolution requirements of current liquid crystal module 9
Put the cache size of COMMAND mode data buffer 2, and this resolution information is same
Time be sent to COMMAND mode data processing module 6.
1) LVDS turn RGB block 1 LVDS video signal is converted to rgb video letter
Number, this flow process can exist always, and LVDS video signal the most constantly enters into LVDS
Turning RGB block 1, LVDS turns RGB block 1 also can be continuously by LVDS video
Signal changes into rgb video signal.
2) in the rgb video signal that COMMAND mode data buffer 2 will receive
One frame image data caching.It should be noted that owing to being input to COMMAND mould herein
First data of formula data buffer 2 are not necessarily the frame head of frame data, therefore exist
COMMAND mode data buffer 2 arranges frame section start testing mechanism, it is ensured that write every time
The data entered are the view data that the frame from frame head to postamble is complete.Frame section start testing mechanism
Can do an enable, when frame head arrives, the enable of this mechanism is just effective, when frame data send
After, enabling invalidating signal, this mechanism also ensure that simultaneously and is cached to COMMAND
Data in mode data buffer 2 are frame signals, and signal is from frame head to postamble.
When after the full frame signal of COMMAND mode data buffer 2 storage, one can be given
Indication signal is to COMMAND control module 5, and now COMMAND control module 5 is opened
Begin to start to read data from COMMAND mode data buffer 2.
3) COMMAND control module 5 reads COMMAND mode data buffer 2
The view data of middle caching also sends to COMMAND mode data processing module 6,
View data is converted to data bus interface and believes by COMMAND mode data processing module 6
Number and transmit to bridging chip 8, data bus interface signal is converted to MIPI by bridging chip 8
Signal transmission shows to liquid crystal module 9.The data that COMMAND control module 5 will read
Send and be in holding state to COMMAND mode data processing module 6, wait next
Secondary startup.COMMAND mode data processing module 6 has three functions: function one is exactly will
Rgb signal is converted into the clock signal that bridging chip 8 needs, and signal sequence is as shown in Figure 2;
Function two is to arrange interface synchronization and COMMAND mode data by liquid crystal module resolution
The image resolution ratio size of buffer 2, according to arranging the pixel number requiring to indicate a need for
Picture;Function three is to control interface regulation by COMMAND to be input to bridging chip 8
The speed of input data, data bus interface signal as shown in Figure 2, bridging chip 8
Enable signal can be detected whether at the rising edge of data bus interface clock signal, have enable letter
Number time then gather data, the frequency of data bus interface signal determines the aobvious figure of liquid crystal module 9
Speed.Data bus interface signal is turned by the bridging chip 8 receiving data bus interface signal
Turn to MIPI signal, thus reach a screen effect.
4) image detection module 3 receives the view data in rgb video signal, and in inspection
Measure to send when the view data in rgb video signal changes and cut figure instruction.
The rgb video signal received is being detected by image detection module 3 always, when the
When one two field picture is sent to image detection module 3, can therefrom extract some the most pixels
It is stored in the buffer within image detection module 3, then starts number below from the second frame
According to contrasting with the former frame data of caching, during until two frame signal contrasts are inconsistent, just
Can be to cutting figure command module 4, COMMAND mode data buffer 2 and COMMAND
Control module 5 sends cuts the instruction of figure information, and meanwhile, image detection module 3 self also can
A new frame signal information is stored in internal buffer, then proceedes to follow-up image is entered
Row detection.
When image detection module 3 detects that rgb video signal changes, and COMMAND
Control module 5 controls interface from the COMMAND of user setup and cuts making of figure to local
When energy signal and image location information, image detection module 3 sends cuts figure instruction, COMMAND
The enable signal of figure is cut in local by control module 5 and image location information is converted into local and cuts figure and join
Confidence ceases and sends to bridging chip 8, and bridging chip 8 configures liquid crystal module 9, treats
COMMAND mode data buffer 2 according to when cutting figure instruction buffer next frame image,
COMMAND control module 5 reads COMMAND mode data according to image location information
The part image data of caching in buffer 2, and send to COMMAND mode data
Reason module 6, then be converted to count by view data by COMMAND mode data processing module 6
According to bus interface signals and transmit to bridging chip 8, data bus interface is believed by bridging chip 8
Number be converted to the transmission of MIPI signal show to liquid crystal module 9.
5) COMMAND mode data buffer 2 is according to cutting figure instruction buffer rgb video
The next frame image of signal.
COMMAND mode buffer 2, cut figure command module 4 and COMMAND control
After module 5 receives figure information of the cutting instruction that image detection module 3 sends, COMMAND pattern
Data buffer 2 can be again by a new frame image information storage, the mode of storage and need note
Meaning item in step 2) in done detailed description.COMMAND control module 5 can be by
Data link drop, i.e. disconnects COMMAND mode data buffer 2 and COMMAND
Link between mode data processing module 6, then open cut figure command module 4 with
Link between COMMAND mode data processing module 6, cutting figure command module 4 can be by
Stored good figure instruction of cutting is transferred to bridge by COMMAND mode data processing module 6
Connecing chip 8, after instruction is sent, COMMAND control module 5 is opened
COMMAND mode data buffer 2 and COMMAND mode data processing module 6 it
Between link.
6) step 3 is repeated) to step 5).
Below it is only the preferred embodiment of the present invention, it is noted that for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, it is also possible to if designing
Dry improvement, these improvement also should be regarded as protection scope of the present invention.
Claims (6)
1. the method realizing COMMAND pattern MIPI signal by bridging chip,
It is characterized in that: comprise the steps:
1) LVDS signal is converted to rgb video signal;
2) by the first frame image data caching in described rgb video signal, frame is set and initiates
Place's testing mechanism, starts to record data after frame head being detected, stops when next frame frame head being detected
Record data;
3) view data of described caching is converted to data bus interface (Data Bus
Interface) signal transmitting to bridging chip (8), described bridging chip (8) is by described
Data bus interface signal is converted to the transmission of MIPI signal and shows to liquid crystal module (9);
4) next frame view data in described rgb video signal and former frame whether phase is judged
With, when next frame image data and former frame are not simultaneously emitted by cutting figure instruction;
5) according to the next frame image cutting figure instruction buffer rgb video signal;
6) step 3 is repeated) to step 5).
The most according to claim 1 realize COMMAND pattern by bridging chip
The method of MIPI signal, it is characterised in that: described step 1) the most also include configuration bridge joint core
Sheet (8) and liquid crystal module (9) are to the step of COMMAND pattern.
3. one kind realize said method realize COMMAND pattern MIPI by bridging chip
The device of signal, it is characterised in that: include that LVDS turns RGB block (1), COMMAND
Mode data buffer (2), image detection module (3), cut figure command module (4),
COMMAND control module (5) and COMMAND mode data processing module (6);
Described LVDS turns RGB block (1) for LVDS video signal is resolved to RGB
Video signal;
Described COMMAND mode data buffer (2) is used for receiving rgb video signal
And store a frame image data;
Described image detection module (3) is for receiving the view data in rgb video signal also
Detection image whether change, and send when image changes cut figure instruction;
Described cut figure command module (4) be used for detecting cut figure instruction after start COMMAND
Control module (5);
Described COMMAND control module (5) is used for reading COMMAND mode data
The view data of rgb signal sending to COMMAND mode data in buffer (2)
Processing module (6), after being sent, described COMMAND control module (5) is in and treats
Machine state;
Described COMMAND mode data processing module (6) is for by rgb video signal
Send after being converted into data bus interface signal to bridging chip (8), described bridging chip (8)
Send after data bus interface signal is converted into MIPI signal to liquid crystal module (9) display.
The most according to claim 3 realize COMMAND pattern by bridging chip
The device of MIPI signal, it is characterised in that: also include MIPI configuration modular unit (7), use
Bridging chip (8) is configured in the order according to upper strata instruction interface.
The most according to claim 4 realize COMMAND pattern by bridging chip
The device of MIPI signal, it is characterised in that: described COMMAND mode data processing module
(6) the configuration information change data/address bus of interface is controlled according to the COMMAND of user setup
The frequency of interface clock signal is to control the aobvious figure speed of liquid crystal module (9).
The most according to claim 5 realize COMMAND pattern by bridging chip
The device of MIPI signal, it is characterised in that: described COMMAND mode data processing module
(6) control interface according to the COMMAND of user setup and obtain the resolution information of image,
And the resolution information of image is sent to bridging chip (8).
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CN104869344B (en) * | 2015-04-30 | 2018-03-13 | 武汉精测电子技术股份有限公司 | The method and apparatus that MIPI signal COMMAND functions are realized based on FPGA |
CN104778936B (en) * | 2015-04-30 | 2017-05-10 | 武汉精测电子技术股份有限公司 | Method for achieving COMMAND function of MIPI signals in HSDT state based on FPGA |
CN111625081A (en) * | 2019-02-28 | 2020-09-04 | 上海和辉光电有限公司 | Image data processing method and device |
CN111641823B (en) * | 2020-05-06 | 2021-08-27 | 深圳市爱协生科技有限公司 | MIPI interface-based image algorithm verification system |
CN111477151B (en) * | 2020-05-06 | 2021-07-23 | Tcl华星光电技术有限公司 | Display device and charging control method applied to display device |
CN112086064B (en) * | 2020-09-22 | 2022-04-26 | 禹创半导体(深圳)有限公司 | Method for applying MIPI instruction comparison mechanism to backlight adjustment |
CN114387922B (en) * | 2022-02-24 | 2023-04-07 | 硅谷数模(苏州)半导体股份有限公司 | Driving chip |
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