CN109817129A - A kind of liquid crystal module detection system and method realized based on Mipi CPHY interface - Google Patents
A kind of liquid crystal module detection system and method realized based on Mipi CPHY interface Download PDFInfo
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Abstract
The invention discloses a kind of liquid crystal module detection systems realized based on Mipi CPHY interface, generate the data that timing control signal, CPHY agreement LP processing module, the work enabling signal of CPHY agreement HS processing module, instruction sending module, image Compression module, high speed/low speed signal superposition processing module, detection processing module return mould group including instruction acquisition module, process control module according to control instruction and detect.The invention also discloses a kind of liquid crystal module detection methods realized based on Mipi CPHY interface.Framework of the present invention is flexible and changeable, can be applicable in different chip environments, simplify process flow, can be required to carry out Function Extension according to user, be suitable for being widely applied.
Description
Technical field
The invention belongs to liquid crystal module technical fields, and in particular to a kind of liquid crystal mould realized based on Mipi CPHY interface
Group detection system and method.
Background technique
Mipi CPHY interface is the new consensus standard that vesa was proposed in 2014, and it is raw to have Mo Zu manufacturer on the market at present
The liquid crystal module of Mipi-CPHY interface is produced, but can only export the bridging chip of CPHY signal on a small quantity at present, there are no releases
For the liquid crystal module detection system of Mipi CPHY interface.
Summary of the invention:
In order to overcome the defect of above-mentioned background technique, the present invention provides a kind of liquid crystal realized based on Mipi CPHY interface
Module detecting system and method, it is flexible and changeable, different chip environments can be applicable in.
In order to solve the above-mentioned technical problem used technical solution of the invention are as follows:
A kind of liquid crystal module detection system realized based on Mipi CPHY interface, comprising:
Instruction acquisition module receives from host computer and is transmitted through the control liquid crystal module state control instruction come；Process control module
The work of timing control signal and CPHY agreement LP processing module and CPHY agreement HS processing module is generated according to control instruction
Enabling signal；CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, carries out coded treatment,
And the LP signal after coding is sent to instruction sending module；LP signal is divided into 3-wire output by instruction sending module；
Image Compression module receives image data by image collection module, and to image data according to Mipi-dsc
Compression algorithm is compressed；CPHY agreement HS processing module image data packages by CPHY agreement, to the data after group packet
It carries out a point lane to handle, is sent to physical signal mapping processing module and completes the mapping of logic port to physical port；
At a high speed/low speed signal superposition processing module is by reversed receiving port by data back received on 3-wire to inspection
Processing module is surveyed, the data that detection processing module returns mould group detect.
Preferably, control instruction includes: mould group point screen control stream, lane number, shoulder parameter before and after horizontal,
Resolution ratio, refresh rate.
Preferably, CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, it is single with 8b
Member increases LP and originates packet, the packet header LP, ecc verification, crc16 check code, LP end packet field.
Preferably, CPHY agreement LP processing module carries out one-hot coded treatment to the data after group packet, after coding
Data are sent to instruction sending module processing.
Preferably, CPHY agreement HS processing module packages processing to the image data of acquisition by CPHY agreement, with 16b
Increase sync synchronous package, HS pixel data packet header, ssdc detection code, crc12 check code, crc16 check code, sync for unit
End packet field.
Preferably, after the lane number brought by identification process control module of CPHY agreement HS processing module is to group packet
Data carry out a point lane and handle, and according to the number of lane successively on 16b data assignment to corresponding lane, will divide good lane's
Data are sent to physical signal mapping processing module processing.
Preferably, the every lane interface containing 3-wire of the CPHY interface of high speed/low speed signal superposition processing module, LP/HS letter
It number is time-multiplexed the port 3-wire therein when sending.
Preferably, detection processing module includes: id value acquiring unit, for passing through readback module internal after mould group is lighted
The state of register mould group, readback mould group id register, the id value of obtaining module；Judging unit by in detection processing module
The id value of portion's setting, which is compared, judges whether consistent, the detection of completion id value.
Preferably, detection processing module further includes gamma test cell, current by optical detection apparatus obtaining module
Gamma value judges whether the gamma value detected deviates from gamma song after repeatedly getting a series of gamma value
Line then feeds back to host computer starting and rewrites gamma register value process again, by modules such as CPHY agreement LP processing rewriting
Gamma register value be transferred to mould group.
The present invention also provides a kind of liquid crystal module detection methods realized based on Mipi CPHY interface, are based on Mipi CPHY
The liquid crystal module detection system that interface is realized realizes that method includes the following steps:
1) instruction acquisition module receives from host computer and is transmitted through the control liquid crystal module state control instruction come；Row control mould
Block generates the work of timing control signal and CPHY agreement LP processing module and CPHY agreement HS processing module according to control instruction
Make enabling signal；
2) CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, carries out coded treatment,
And the LP signal after coding is sent to instruction sending module；LP signal is divided into 3-wire output by instruction sending module；
3) image Compression module receives image data by image collection module, and to image data according to Mipi-
Dsc compression algorithm is compressed；
4) CPHY agreement HS processing module image data packages by CPHY agreement, divides the data after group packet
Lane processing is sent to physical signal mapping processing module and completes the mapping of logic port to physical port；
5) high speed/low speed signal superposition processing module is given data back received on 3-wire by reversed receiving port
Detection processing module；
6) data that detection processing module returns mould group detect, and mould group is deposited after lighting by readback module internal
The state of device value obtaining module, readback mould group id register, the id value of obtaining module, by being set with detection processing inside modules
Id value be compared and judge whether consistent, complete the detection of id value.
The beneficial effects of the present invention are: the present invention is based on the detection that Mipi CPHY interface realizes liquid crystal module, the frameworks
It is flexible and changeable, different chip environments can be applicable in, process flow is simplified, while being able to achieve parallel place truly
Reason, greatly provides the processing speed of system, while application scenarios are changeable, adaptable, can be required to carry out function according to user
It can extend, be suitable for being widely applied.The object of the present invention is to provide a kind of liquid crystal modules realized based on Mipi CPHY protocol interface
Detection system, the system architecture are CPHY signal generator+module detecting systems, which can be realized using sopc chip,
Can also be by the way of arm+pc, scalability is strong.
Detailed description of the invention
Fig. 1 is the overall structure diagram for the liquid crystal module detection system realized the present invention is based on Mipi CPHY interface；
Fig. 2 is to be based on sopc chip+ddr core the present invention is based on the liquid crystal module detection system that Mipi CPHY interface is realized
The structural schematic diagram that sheet mode is realized；
Fig. 3 is to be based on the side fpga+arm+pc the present invention is based on the liquid crystal module detection system that Mipi CPHY interface is realized
The structural schematic diagram that formula implementation is realized；
Fig. 4 is that the present invention is based on the liquid crystal module detection system expansion structure schematic diagrames that Mipi CPHY interface is realized.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments, but the embodiment should not be construed as pair
Limitation of the invention.
The present invention provides a kind of liquid crystal module detection system realized based on Mipi CPHY interface, comprising:
Energy supply control module is used for the starting of storage chip for operating voltage needed for pio chip and mould group, memory module
Program and image data, for host computer for editing user instruction and providing visual control interface, user is upper by operating
Machine can produce control command, the image data of instruction liquid crystal module work, to control the unlatching of whole system testing process
And end.
Instruction acquisition module receives from host computer and is transmitted through the control liquid crystal module state control instruction come；Control instruction includes
Shoulder parameter, resolution ratio, refresh rate before and after mould group point screen control stream, lane number, horizontal.Mould group point screen control code
It streams and gives the processing of CPHY agreement LP processing module, flow processing resume module is given in other instructions.
Process control module extracts the parameters such as horizontal front and back shoulder parameter, resolution ratio, refresh rate and generates timing
Signal is controlled, extracts liquid crystal module initial point screen enabled instruction, and control CPHY agreement LP is generated according to timing control signal
The enabling signal of processing module work, controls CPHY agreement LP processing module process points screen control stream.Finally generate CPHY association
View HS processing module enabling signal controls the resume module image data.
CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, carries out coded treatment, and
LP signal after coding is sent to instruction sending module；CPHY agreement LP processing module presses CPHY to the control instruction of acquisition
Agreement packages, and increases LP as unit using 8b and originates packet, the packet header LP, ecc verification, crc16 check code, LP end packet field.
CPHY agreement LP processing module carries out one-hot coded treatment to the data after group packet, and the data after coding are sent to instruction hair
Send resume module.
LP signal is divided into 3wire output by instruction sending module, and CPHY agreement provides Low-power signal by 3-wire
Transmission, therefore the mapping function that Low-power signal divides 3-wire processing module mainly to complete 8bit to 3-wire.After mapping
3wire signal is just directly sent to 3wire physical port.
Image Compression module receives image data by image collection module, and to image data according to Mipi-dsc
Compression algorithm is compressed；The direct transparent transmission of input data can be exported if image data amount does not need compression processing very much,
Or the module can be substituted for other function module, for example do image split screen, superposition processing etc..
CPHY agreement HS processing module packages to image data by CPHY agreement, divides the data after group packet
Lane processing is sent to physical signal mapping processing module and completes the mapping of logic port to physical port；At CPHY agreement HS
Reason module packages processing to the image data of acquisition by CPHY agreement, using 16b as unit increase sync synchronous package, HS picture
Plain data packet head, ssdc detection code, crc12 check code, crc16 check code, sync end packet field；CPHY agreement HS processing
The lane number that module is brought by identification process control module carries out a point lane to the data after group packet and handles, according to lane's
The data of point good lane successively on 16b data assignment to corresponding lane, are sent to physical signal mapping processing module by number
Processing.
Physical signal mapping processing module is used to for every 16bit logical signal on every lane to be converted into 3wire physics letter
Number, logic port is completed to physics 3-wire port mapping.Comprise the concrete steps that, be distributed to the high-speed signal on lane with
16b is unit, completes 16bit-21bit mapping according to the mapping form that CPHY agreement is formulated, finally divides 21bit data equally
To 3-wire, 7 bit are carried on each wire, complete the mapping of logic port to physical port.
High speed signal transmission interface module is used to changing into parallel mapping data into stringization output, the string data after output
It is output to physical port.
At a high speed/low speed signal superposition processing module mainly completes the processing of LP and HS signal aliasing, the i.e. every lane of CPHY interface
Interface containing 3-wire, LP/HS signal are the time division multiplexing ports 3-wire therein in transmission.Such as high speed/low speed signal superposition
Processing module is monitored LP/HS signal, if being in LP state, the 3-wire signal of LP is only sent to corresponding CPHY
The corresponding 3-wire signal of HS is sent to corresponding CPHY interface, is time-multiplexed each other by interface if sending state in HS.
Simultaneously the module again include reversed receiving port, be used for will on 3-wire received data back to detection processing
Module.
Detection processing module includes: id value acquiring unit, for passing through readback module internal register after mould group is lighted
The state of mould group, readback mould group id register, the id value of obtaining module；Judging unit with detection processing inside modules by setting
Fixed id value, which is compared, to be judged whether unanimously, if so, the id value belongs to current mould group, if it is not, then replacing current mould group.
Different types of mould group id value is different, and corresponding testing process is also different, first judges whether id value is consistent, and judgement is current
Whether process is the corresponding mould group, if being current mould group, then subsequently do other detections unanimously, such as gamma detection
Deng if it is inconsistent, replacing the process of corresponding mould group, or stopping subsequent detection.
As shown in figure 4, detection processing module further includes gamma test cell, worked as by optical detection apparatus obtaining module
Preceding gamma value judges whether the gamma value detected deviates from after repeatedly getting a series of gamma value
Gamma then feeds back to host computer starting and rewrites gamma register value process again, passes through the moulds such as CPHY agreement LP processing
The gamma register value of rewriting is transferred to mould group by block.
The liquid crystal module detection system that the present embodiment is realized based on Mipi CPHY protocol interface, implementation can be multiple
Selection, for example can be realized based on sopc chip+ddr chip, such as Fig. 2, it can also be realized based on fpga+arm+pc mode, such as
Shown in Fig. 3.The difference of Fig. 1 and Fig. 3 is: Fig. 1 other modules other than memory module are based on the realization of sopc chip, this
The interaction of sample data does not need PC participation, enhances system actual effect.Fig. 3 host computer is still the realization side according to traditional pc
Formula, data memory module realize that the control of host computer is realized by arm based on ddr, other modules can be realized based on fpga.
The present invention also provides a kind of liquid crystal module detection methods realized based on Mipi CPHY interface, are based on embodiment one
The liquid crystal module detection system that Mipi CPHY interface is realized realizes that energy supply control module is for work needed for pio chip and mould group
Make voltage；Memory module is used for the startup program and image data of storage chip；Host computer is for editing user instruction and offer
Visual control interface, user can produce control command, the picture number that instruction liquid crystal module works by operating host computer
According to control the unlatching and end of whole system testing process.
Specific method includes the following steps:
1) instruction acquisition module receives the control instruction that the control liquid crystal module state come is transmitted through from host computer, including mould group
Point screen control stream, lane number, horizontal front and back shoulder parameter, resolution ratio, refresh rate etc..Mould group point screen control stream
The processing of CPHY agreement LP processing module is given, flow processing resume module is given in other instructions.
Process control module extracts horizontal front and back according to the control instruction obtained from instruction acquisition module
The parameters such as shoulder parameter, resolution ratio, refresh rate generate timing control signal, extract liquid crystal module initial point screen enabled instruction, and
The enabling signal of control CPHY agreement LP processing module work, control CPHY agreement LP processing are generated according to timing control signal
Resume module point screen control stream.It finally generates CPHY agreement HS processing module enabling signal and controls the resume module picture number
According to.
2) CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, carries out coded treatment,
And the LP signal after coding is sent to instruction sending module；Specifically: group is carried out by CPHY agreement to the control instruction of acquisition
Packet increases LP as unit using 8b and originates the fields such as packet, the packet header LP, ecc verification, crc16 check code, LP end packet, then to group
Data after packet carry out one-hot coded treatment, and the data after coding are sent to instruction sending module processing.
LP signal is divided into 3-wire output by instruction sending module；CPHY agreement provides Low-power signal by 3-wire
Transmission, therefore the mapping function that Low-power signal divides 3-wire processing module mainly to complete 8bit to 3-wire.After mapping
3wire signal is just directly sent to 3wire physical port.
3) image Compression module receives image data by image collection module, and to image data according to Mipi-
Dsc compression algorithm is compressed；It can the direct transparent transmission of input data is defeated if image data amount does not need compression processing very much
Out, or the module can be substituted for other function module, for example do image split screen, superposition processing etc..
4) CPHY agreement HS processing module image data packages by CPHY agreement, divides the data after group packet
Lane processing is sent to physical signal mapping processing module and completes the mapping of logic port to physical port；Specifically: to acquisition
Image data package processing by CPHY agreement, using 16b as unit increase sync synchronous package, HS pixel data packet header,
The fields such as ssdc detection code, crc12 check code, crc16 check code, sync end packet.Then pass through identification process control module
The lane number brought carries out a point lane to the data after group packet and handles.There are a few lane data that just successively 16b data assignment is arrived
On corresponding lane.The data of good lane are divided to give physical signal mapping processing module processing.
Physical signal maps processing module and every 16bit logical signal on every lane is converted into 3wire physical signal,
Logic port is completed to physics 3-wire port mapping.It comprises the concrete steps that, is distributed to the high-speed signal on lane with 16b
For unit, 16bit-21bit mapping is completed according to the mapping form that CPHY agreement is formulated, finally divides 21bit data equally 3-
7 bit are carried on wire, each wire, complete the mapping of logic port to physical port.
5) high speed signal transmission interface module is used to changing into parallel mapping data into stringization output, the string number after output
According to being output to physical port.
At a high speed/low speed signal superposition processing module is by reversed receiving port by data back received on 3-wire to inspection
Survey processing module；At a high speed/low speed signal superposition processing module mainly completes the processing of LP and HS signal aliasing, i.e. CPHY interface is every
Lane interface containing 3-wire, LP/HS signal are the time division multiplexing ports 3-wire therein in transmission.Such as high speed/low speed signal
Superposition processing module is monitored LP/HS signal, if being in LP state, is only sent to the 3-wire signal of LP corresponding
The corresponding 3-wire signal of HS is sent to corresponding CPHY interface, each other the time-division if sending state in HS by CPHY interface
Multiplexing.
At a high speed/low speed signal superposition processing module also includes reversed receiving port, for will on 3-wire received number
According to returning to detection processing module.
6) data that detection processing module returns mould group detect, and mould group is deposited after lighting by readback module internal
The state of device value obtaining module, readback mould group id register, the id value of obtaining module, by being set with detection processing inside modules
Id value be compared and judge whether consistent, complete the detection of id value.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of liquid crystal module detection system realized based on Mipi CPHY interface characterized by comprising
Instruction acquisition module receives from host computer and is transmitted through the control liquid crystal module state control instruction come；Process control module foundation
The control instruction generates the work of timing control signal and CPHY agreement LP processing module and CPHY agreement HS processing module
Enabling signal；CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, carries out coded treatment, and
LP signal after coding is sent to instruction sending module；The LP signal is divided into 3-wire output by instruction sending module；
Image Compression module by described image obtain module receive image data, and to described image data according to
Mipi-dsc compression algorithm is compressed；CPHY agreement HS processing module packages to image data by CPHY agreement, to group
Data after packet carry out a point lane and handle, and are sent to physical signal mapping processing module and complete logic port reflecting to physical port
It penetrates；
At a high speed/low speed signal superposition processing module by reversed receiving port by data back received on 3-wire to detection at
Module is managed, the data that detection processing module returns mould group detect.
2. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
In the control instruction includes: mould group point screen control stream, lane number, horizontal front and back shoulder parameter, resolution ratio, brush
New rate.
3. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
In: the CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, increases LP by unit of 8b
Originate packet, the packet header LP, ecc verification, crc16 check code, LP end packet field.
4. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 3, feature are existed
In: the CPHY agreement LP processing module carries out one-hot coded treatment to the data after group packet, and the data after coding are sent to
Instruction sending module processing.
5. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
It packages processing to the image data of acquisition by CPHY agreement in: CPHY agreement HS processing module, increases by unit of 16b
Sync synchronous package, HS pixel data packet header, ssdc detection code, crc12 check code, crc16 check code, sync end packet field.
6. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
In: the lane number that CPHY agreement HS processing module is brought by identification process control module divides the data after group packet
The data of point good lane are sent to institute according to the number of lane successively on 16b data assignment to corresponding lane by lane processing
State physical signal mapping processing module processing.
7. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
In: the every lane interface containing 3-wire of the CPHY interface of high speed/low speed signal superposition processing module, LP/HS signal is when transmission is
Divide multiplexing the port 3-wire therein.
8. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
In the detection processing module includes: id value acquiring unit, for passing through readback module internal register mould after mould group is lighted
The state of group, readback mould group id register, the id value of obtaining module；Judging unit is by setting with detection processing inside modules
Id value, which is compared, to be judged whether unanimously, if so, the id value belongs to current mould group, if it is not, then replacing current mould group or stopping
Only monitor.
9. a kind of liquid crystal module detection system realized based on Mipi CPHY interface according to claim 1, feature are existed
In: the detection processing module further includes gamma test cell, by the current gamma value of optical detection apparatus obtaining module,
After repeatedly getting a series of gamma value, judge whether the gamma value detected deviates from gamma, if so,
It then feeds back to host computer starting and rewrites gamma register value process again, by modules such as CPHY agreement LP processing rewriting
Gamma register value is transferred to mould group.
10. a kind of liquid crystal module detection method realized based on Mipi CPHY interface, which is characterized in that the method is based on power
Benefit requires to realize that the method includes walking as follows based on the liquid crystal module detection system that Mipi CPHY interface is realized described in 1-9
It is rapid:
1) instruction acquisition module receives from host computer and is transmitted through the control liquid crystal module state control instruction come；Process control module according to
The work of timing control signal and CPHY agreement LP processing module and CPHY agreement HS processing module is generated according to the control instruction
Make enabling signal；
2) CPHY agreement LP processing module packages to the control instruction of acquisition by CPHY agreement, carries out coded treatment, and will
LP signal after coding is sent to instruction sending module；The LP signal is divided into 3-wire output by instruction sending module；
3) image Compression module by described image obtain module receive image data, and to described image data according to
Mipi-dsc compression algorithm is compressed；
4) CPHY agreement HS processing module packages to image data by CPHY agreement, carries out a point lane to the data after group packet
Processing is sent to physical signal mapping processing module and completes the mapping of logic port to physical port；
5) high speed/low speed signal superposition processing module gives data back received on 3-wire to detection by reversed receiving port
Processing module；
6) data that detection processing module returns mould group detect, and mould group passes through readback module internal register value after lighting
The state of obtaining module, readback mould group id register, the id value of obtaining module pass through the id set with detection processing inside modules
Value, which is compared, judges whether consistent, the detection of completion id value.
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