ESD interference processing method and processing system in the display screen of MIPI interface
Technical field
The present invention relates to MIPI interface and display screen technology field, particularly to the display of a kind of MIPI interface
ESD interference processing method and processing system in screen.
Background technology
For modern smart mobile phone, to fill in the equipment of too many various distinct interface inside it, to hands
The design of machine and components and parts select to bring the biggest difficulty.Common, the storage of a smart mobile phone, aobvious
Show, image, the internal interface such as sound is all different.Even if for utilizing camera interface, different
Photographic head module manufacturer is likely to use different interface shapes, and this is to cell phone manufacturer's design mobile phone and selection
Device brings the biggest difficulty.
To this end, multiple standardization bodies arise at the historic moment, wherein, MIPI(Mobile Industry Processor
Interface) it is the alliance set up for 2003 by companies such as ARM, Nokia, ST and TI, it is therefore an objective to
The such as standardization such as photographic head, display screen interface, radio frequency/baseband interface of the interface of interior of mobile phone, thus reduce
The complexity of mobile phones design and increase design flexibility.Different working groups is had, respectively below MIPI alliance
Define a series of interior of mobile phone interface standard, such as utilizing camera interface CSI, display interface DSI, radio frequency
A series of MIPI interfaces such as interface DigRF, mike/horn interface SLIMbus.Unified interface standard
Benefit is that cell phone manufacturer as required can be from selecting different chips and module, change design on the market flexibly
More efficient and convenient with during function.
MIPI is the standard that a comparison is new, and its specification is also constantly being revised and improved, current comparative maturity
Application of Interface has DSI(to show interface) and CSI(utilizing camera interface).CSI/DSI refers respectively to its carrying
It is to apply for Camera or Display, has the protocol architecture of complexity.Physical layer (the Phy of CSI/DSI
Layer) being responsible to define by special working group, its current accepted standard is D-PHY.D-PHY uses 1
The differential clocks and the 1~4 pair of differential data line that synchronize source carry out data transmission.Data transmission uses DDR
Mode, the i.e. lower edges at clock have data to transmit.The physical layer of D-PHY supports HS(High Speed)
With LP(Low Power) two kinds of mode of operations.Using Low Voltage Differential Signal under HS pattern, power consumption is relatively big,
But the highest data rate (data rate is 80M~1Gbps) can be transmitted;Use single-ended under LP pattern
Signal, data rate the lowest (< 10Mbps), but corresponding power consumption is the lowest.The combination of both of which is protected
Demonstrate,prove MIPI bus and with high-speed transfer, and big data quantity transmission can have been need not when needs transmission mass data
Time can reduce again power consumption.
For current mobile terminal, using the display screen of MIPI interface to get more and more, display screen is moving
In dynamic terminal, occupied area is relatively big, is very easy to be disturbed, particularly electrostatic (ESD) interference, as
The electrostatic etc. of human body.To this, after prior art mainly interrupts producing by TE, perform to read display screen operation,
Specifically refer to Fig. 1.So basic ESD interference can only be detected according to the display screen configuration information obtained
Reason, i.e. some ESD cause of failures cannot find;Additionally, need after ESD interference occurs detecting
Within 1 ~ 2 second, could recover display screen to show, i.e. the eliminating time of problem is longer, will have influence on the normal of display screen
Display.
Summary of the invention
It is an object of the invention to provide ESD interference processing method and place in the display screen of a kind of MIPI interface
Reason system, to solve the less problem of ESD cause of failures being able to detect that in prior art.
For solving above-mentioned technical problem, the invention provides ESD interference in the display screen of a kind of MIPI interface
Processing method, in the display screen of described MIPI interface, ESD interference processing method includes:
Produce frame interrupt signal;
Determine whether to read display screen operation;
When there being reading display screen operation, reading display screen and configure read operation variable, reading, display screen state is different
Chang Shi, performs display screen and recovers;When not reading display screen operation, perform controller and reset or backlight tune
Joint information judges.
Optionally, in the display screen of described MIPI interface in ESD interference processing method, when not reading
During display screen operation, it is judged that whether read operation variable configures, and when read operation variable is configured, performs control
Device resets and removes read operation variable.
Optionally, in the display screen of described MIPI interface ESD interference processing method in, upper once
Frame interrupt signal produce time, perform controller reset and remove read operation variable.
Optionally, in the display screen of described MIPI interface in ESD interference processing method, read operation is worked as
Variable be configured without and do not reset operation time, perform backlight regulation information judge, when have backlight regulate information
Time, perform backlight regulation.
Optionally, in the display screen of described MIPI interface ESD interference processing method in, upper once
Frame interrupt signal produce time, perform backlight regulation.
Optionally, in the display screen of described MIPI interface in ESD interference processing method, described execution
Display screen recovers to include reinitializing display screen.
The present invention also provides for ESD in the display screen of a kind of MIPI interface and disturbs processing system, and described MIPI connects
In the display screen of mouth, ESD interference processing system includes:
Control module, in order to produce frame interrupt signal;
First judge module, in order to determine whether that reading display screen operates;
First processing module, in order to when there being reading display screen operation, to read display screen and to configure read operation variable,
When reading display screen abnormal state, perform display screen and recover;When not reading display screen operation, perform control
Device processed resets or backlight regulation information judges.
Optionally, in the display screen of described MIPI interface in ESD interference processing system, described first
Processing module includes the second judge module and the second processing module, wherein,
Described second judge module is not in order to when reading display screen operation, it is judged that whether read operation variable configures;
Described second processing module, in order to when read operation variable is configured, performs controller and resets and remove
Read operation variable.
Optionally, in the display screen of described MIPI interface in ESD interference processing system, described second
Processing module, when upper frame interrupt signal once produces, performs controller and resets and remove read operation variable.
Optionally, in the display screen of described MIPI interface in ESD interference processing system, described first
Processing module also includes the 3rd judge module and the 3rd processing module, wherein,
Described 3rd judge module in order to when read operation variable be configured without and do not reset operation time, perform the back of the body
Light regulation information judges;
Described 3rd processing module is in order to when there being backlight regulation information, to perform backlight regulation.
Optionally, in the display screen of described MIPI interface in ESD interference processing system, the described 3rd
Processing module, when upper frame interrupt signal once produces, performs backlight regulation.
Optionally, in the display screen of described MIPI interface in ESD interference processing system, described execution
Display screen recovers to include reinitializing display screen.
In the display screen of the MIPI interface of present invention offer, ESD disturbs in processing method and processing system,
When there being reading display screen operation, read display screen and configure read operation variable, when reading display screen abnormal state,
Execution display screen recovers;When not reading display screen operation, perform controller and reset or backlight regulation information
Judge, it is possible to detect more ESD cause of failures, and then improve the effect that ESD interference is processed.
Accompanying drawing explanation
Fig. 1 be existing MIPI interface display screen in ESD interference processing method time diagram;
Fig. 2 be the MIPI interface of the embodiment of the present invention display screen in ESD interference processing method flow process show
It is intended to;
Fig. 3 be the MIPI interface of the embodiment of the present invention display screen in ESD interference processing method sequential show
It is intended to;
Fig. 4 be the MIPI interface of the embodiment of the present invention display screen in ESD interference processing system module show
It is intended to;
Fig. 5 is the analogous diagram reading display screen operation of the embodiment of the present invention;
Fig. 6 is the analogous diagram reading display screen operation of the embodiment of the present invention;
Fig. 7 is the analogous diagram of the reset MIPI controller of the embodiment of the present invention.
Detailed description of the invention
In the display screen of the MIPI interface proposed the present invention below in conjunction with the drawings and specific embodiments, ESD does
Disturb processing method and processing system is described in further detail.According to following explanation and claims, this
Bright advantage and feature will be apparent from.It should be noted that, accompanying drawing all uses the form simplified very much and all uses
Non-ratio accurately, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
Refer to Fig. 2 and Fig. 3, wherein, Fig. 2 be the MIPI interface of the embodiment of the present invention display screen in ESD
Interference processing method schematic flow sheet, Fig. 3 be the MIPI interface of the embodiment of the present invention display screen in ESD
The time diagram of interference processing method.As in figure 2 it is shown, in the present embodiment, showing of described MIPI interface
In display screen, ESD interference processing method specifically includes:
Wait that frame interrupt signal produces, i.e. after controller produces frame interrupt signal, perform following step.
After producing frame interrupt signal, it may be judged whether have reading display screen (be called for short and read screen) operation.Here,
Concrete, by a low accuracy clock as trigger point, trigger a command operation every the unit interval,
To obtain, whether controller produces reading display screen operation.
Then, when judging to have reading display screen operation, read display screen and configure read operation variable.Refer to
Fig. 5 and Fig. 6, it is the analogous diagram reading display screen operation of the embodiment of the present invention.Concrete, read display screen
ID(or specified register) and bus state corresponding to MIPI interface;Here, described configuration read operation becomes
Amount will read operation variable set, with characterize carried out once read display screen operation.Read display screen ID it
After, the display screen ID read is compared with display screen register value time normal, thus judges display
The state of screen is the most abnormal.Here, when judging that the display screen state read, for time abnormal, performs display screen
Recovery operation, concrete, reinitialize described display screen.Likewise it is preferred that, reset MIPI interface
D-PHY is to guarantee to recover the D-PHY experienced interference of MIPI interface.
In the present embodiment, when judging not read display screen operation, perform whether read operation variable configures
Judgement.When judging that read operation variable is configured, perform controller and reset and remove read operation variable,
Will reset by read operation variable, in order to the follow-up monitoring to reading display screen operation.Refer to Fig. 7, it is this
The analogous diagram of the reset MIPI controller of inventive embodiments.Wherein, perform controller reset and remove reading behaviour
Make variable to realize when upper frame interrupt signal once produces, i.e. producing what the frame reading display screen operation interrupted
Realize when frame interrupt signal next time produces.Thus, sequential can there is time enough carry out order
Transmission.
In the present embodiment, when judge when read operation variable be configured without and do not reset operation time, perform
The judgement of backlight regulation information, i.e. judges whether to need to carry out backlight regulation, when judging to need to carry out backlight
During regulation, perform backlight regulation.Concrete, use the mode of MIPI order to send, here, same,
The operation of backlight regulation realizes when upper frame interrupt signal once produces, and i.e. reads display screen operation in generation
Realize when the frame interrupt signal next time that frame interrupts produces, i.e. do not reading screen operation and the feelings of the operation that resets
Backlight regulation is carried out under condition.Thus, sequential can there is time enough carry out the transmission of order.
Here, in the present embodiment, also screen porch signal is adjusted, to increase the frame interrupt signal time,
Thus so that MIPI interface is maintained at LOWER POWER state reduces power consumption.
To sum up, in the present embodiment, when occurring frame to interrupt, in interruption, judge whether that needs carry out reading screen
ID operates, if needing to carry out reading screen ID operation to carry out reading screen ID, and judges to shield the most extremely, if screen
Extremely screen is carried out recovery operation;When screen is normal, when upper frame once interrupts producing, to MIPI controller
Reset, so can ensure that MIPI controller is normal, can ensure that reading screen operation will not be subject to simultaneously
The impact that MIPI controller resets, is also put into during frame interrupts for the regulation of backlight and carries out, and this can ensure that
Send the non-display area at screen of the time needed for order, it is to avoid the normal display of interference screen.
Accordingly, during the present embodiment additionally provides the display screen of a kind of MIPI interface, ESD disturbs processing system.
Concrete, refer to Fig. 4, its be the embodiment of the present invention MIPI interface display screen in ESD interference process
The module diagram of system.As shown in Figure 4, in the display screen of described MIPI interface, ESD interference processes system
System includes:
Control module 40, in order to produce frame interrupt signal;
First judge module 41, in order to determine whether that reading display screen operates;
First processing module 42, in order to when there being reading display screen operation, to read display screen and to configure read operation variable,
When reading display screen abnormal state, perform display screen and recover;When not reading display screen operation, perform control
Device processed resets or backlight regulation information judges.
Concrete, described first processing module 42 include second judge module the 420, second processing module 421,
3rd judge module 422 and the 3rd processing module 423, wherein,
Described second judge module 420 is not in order to when reading display screen operation, it is judged that whether read operation variable
Configuration;
Described second processing module 421 in order to when read operation variable is configured, perform controller reset and
Remove read operation variable;
Described 3rd judge module 422 in order to when read operation variable be configured without and do not reset operation time, hold
Row backlight regulation information judges;
Described 3rd processing module 423 is in order to when there being backlight regulation information, to perform backlight regulation.
To sum up, ESD interference processing method and process in the display screen of the MIPI interface provided at the present embodiment
In system, when there being reading display screen operation, read display screen and configure read operation variable, reading display screen shape
During state exception, perform display screen and recover;When not reading display screen operation, perform controller and reset or the back of the body
Light regulation information judges, it is possible to detect more ESD cause of failures, and then improves ESD interference
The effect processed.
Foregoing description is only the description to present pre-ferred embodiments, not any limit to the scope of the invention
Fixed, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification, all belong to
Protection domain in claims.