CN106060341A - Method for reducing power consumption of screen driver board and low-power-consumption screen driver board - Google Patents
Method for reducing power consumption of screen driver board and low-power-consumption screen driver board Download PDFInfo
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- CN106060341A CN106060341A CN201610661821.9A CN201610661821A CN106060341A CN 106060341 A CN106060341 A CN 106060341A CN 201610661821 A CN201610661821 A CN 201610661821A CN 106060341 A CN106060341 A CN 106060341A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
-
- 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
- G09G3/20—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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/144—Movement detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
Abstract
The invention discloses a method for reducing power consumption of a screen driver board and a low-power-consumption screen driver board, and relates to the screen driver board of a liquid crystal display. The method comprises the steps of closing and opening a video processing module in the screen driver board according to video stream data received by a low-voltage differential signal receiving port, and when the video processing module is completely closed, and reading the video stream data from a double-rate synchronous dynamic random access memory by the screen driver board. According to the low-power-consumption screen driver board provided by the invention, a video data comparison controller module is integrated into the screen driver, and the module is used for closing or opening the video processing module in the screen driver board according to the video stream data received by the low-voltage differential signal receiving port. The method can reduce the power consumption of the screen driver board while ensuring display image quality of a television, and is applicable to display devices such as televisions and the like.
Description
Technical field
The present invention relates to a kind of method reducing screen driving plate power consumption, further relate to a kind of low-power consumption screen and drive plate.
Background technology
Screen drives plate (TCON IC) to be also logic card or center panel, is indispensable necessary unit in LCD TV
One of part.Screen drives the effect of plate to be that (input signal comprises RGB data for LVDS input image data signal that digiboard is sent here
Signal, clock signal, control signal three class signal) processed by logic card after, be converted into the LVDS signal that can drive liquid crystal display screen,
The LVDS being routed directly to liquid crystal display screen again receives chip.By shift register, viewdata signal and the clock signal of storage are turned
Change the control signal that liquid crystal display screen is capable of identify that into.Ranks signal RSDS is worked by the MOSFET pipe in control panel and controls liquid crystal
The torsion resistance of molecule, to drive liquid crystal display displays images.Logic card is an assembly with software program, is built-in with displacement and posts
The special module of storage (horizontal and vertical displacement).
In current television system, increasing screen drives plate to be all integrated with various Computer Vision module
(i.e. Computer Vision IP), such as color enhancement module, motion compensating module, white balance module and the (Over that overdrives
Drive, OD) module etc..Fig. 1 is that screen drives the one of plate to simplify framework at present.
Screen drives the increase of plate function to improve the display effect of screen, improves the display image quality of video.But screen drives
The increase of intralaminar part Computer Vision module also causes screen to drive the increase of grid (gate) quantity, the increasing of grid number of stages in plate
Adding the increase necessarily causing screen to drive plate power consumption, so while present TV display effect is improved, but screen drives plate
Power consumption also increased.
Summary of the invention
For the problems referred to above, it is provided that a kind of screen that reduces drives the method for plate power consumption and low-power consumption screen to drive plate.
The method that screen drives plate power consumption is reduced according to an aspect of the invention, it is provided a kind of, including:
Obtain the video stream data that screen drives the Low Voltage Differential Signal receiving port of plate to receive；
The video stream data received according to described Low Voltage Differential Signal receiving port turns off or on screen and drives intralaminar part
Video processing module；
Judge that described screen drives all video processing modules of intralaminar part to be the most all closed；
When judging that described screen drives all video processing modules of intralaminar part to be all closed, drive from described screen
The Double Data Rate synchronous DRAM that plate connects reads video stream data.
According to a preferred embodiment of the invention, the video stream data received according to described Low Voltage Differential Signal receiving port
Turn off or on screen and drive the video processing module of intralaminar part, including:
Judge that whether there is continuous print multiframe in the video stream data that described Low Voltage Differential Signal receiving port receives regards
Frequently flow data is identical；
Turn off or on screen according to judged result and drive the video processing module of intralaminar part.
According to a preferred embodiment of the invention, turn off or on screen according to judged result and drive the Video processing of intralaminar part
Module, including:
In judging the video stream data that described Low Voltage Differential Signal receiving port receives, there is continuous print multiframe regard
Frequently when flow data is identical, all or part of video processing module closing described screen driving intralaminar part.
According to a preferred embodiment of the invention, turn off or on screen according to judged result and drive the Video processing of intralaminar part
Module, including:
Video stream data adjacent in judging the video stream data that described Low Voltage Differential Signal receiving port receives
When being different from, described screen is made to drive the video processing module of intralaminar part to be in opening.
According to a preferred embodiment of the invention, described screen drives the video processing module of intralaminar part to include in the following
One or more: color enhancement module, motion compensating module and line buffer module.
According to another aspect of the present invention, it is provided that a kind of low-power consumption screen drives plate, and it includes video data comparison control
Device module processed, described video data comparison controller module includes:
Detecting unit, is configured to obtain the video stream data that screen drives the Low Voltage Differential Signal receiving port of plate to receive；
Control unit, is configured to the video stream data according to described Low Voltage Differential Signal receiving port receives and closes or open
Qi Ping drives the video processing module of intralaminar part；
Judging unit, is configured to judge that described screen drives all video processing modules of intralaminar part to be the most all closed；
Video stream data reads unit, is configured to judge that described screen drives all of intralaminar part to regard at described judging unit
Frequently, when processing module is all closed, read from the Double Data Rate synchronous DRAM driving plate to be connected with described screen
Video stream data.
According to a preferred embodiment of the invention, described control unit includes:
Whether judgment sub-unit, be configured to judge in the video stream data that described Low Voltage Differential Signal receiving port receives
There is continuous print multi-frame video flow data identical；
Control subelement, be configured to the judged result according to described judgment sub-unit and turn off or on screen driving intralaminar part
Video processing module.
According to a preferred embodiment of the invention, described control subelement concrete configuration is: judge in described judgment sub-unit
Go out the video stream data that described Low Voltage Differential Signal receiving port receives exists continuous print multi-frame video flow data identical time,
All or part of video processing module closing described screen driving intralaminar part.
According to a preferred embodiment of the invention, described control subelement concrete configuration is: judge in described judgment sub-unit
When going out that in the video stream data that described Low Voltage Differential Signal receiving port receives, adjacent video stream data is different from, make institute
Stating screen drives the video processing module of intralaminar part to be in opening.
According to a preferred embodiment of the invention, described screen drives the video processing module of intralaminar part to include in the following
One or more: color enhancement module, motion compensating module and line buffer module.
The present invention drives intralaminar part to be integrated with video data compared with control device module, by video data pair at conventional screen
Than controller module, the data of adjacent several frames are contrasted.Data if there is adjacent several frames are identical, it is possible to turn off and regard
Frequently processing module, then screen drives plate directly reading video data from Double Data Rate synchronous DRAM；If phase
Adjacent frame data all differ, and the most do not make any process.Realize, with this, the purpose that screen drives plate oneself power consumption to reduce, also ensure that simultaneously
TV display image quality.
Other features and advantages of the present invention will illustrate in the following description, and partly become from description
It is clear that or understand by implementing the present invention.The purpose of the present invention and other advantages can be by wanting in description, right
The structure asking specifically noted in book and accompanying drawing realizes and obtains.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with the reality of the present invention
Execute example to be provided commonly for explaining the present invention, be not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 shows in background technology that what screen drove plate simplifies framework；
Fig. 2 shows the schematic flow sheet in embodiment 1；
Fig. 3 shows the schematic flow sheet in embodiment 2；
Fig. 4 shows the schematic flow sheet in embodiment 3；
Fig. 5 shows that in embodiment 4, low-power consumption screen drives the configuration diagram of plate；
Fig. 6 shows the structural representation of video data comparison controller in embodiment 6；
Fig. 7 shows the structural representation of control unit in embodiment 6；
Fig. 8 shows the annexation schematic diagram of embodiment 8,9 and 10 breaker in middle pipe and load；
Fig. 9 shows that in embodiment 8, low-power consumption screen drives the configuration diagram of plate；
Figure 10 shows that in embodiment 9, low-power consumption screen drives the configuration diagram of plate；
Figure 11 shows that in embodiment 10, low-power consumption screen drives the configuration diagram of plate.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the present invention, real below in conjunction with the present invention
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, all should belong to present invention protection
Scope.
Embodiment 1:
As it is shown in figure 1, the screen of routine drives intralaminar part to be integrated with LVDS signal input interface, RGB data processing module, color
Color module, motion compensating module, line buffer (Line buffer) module, grid control module and the source electrode of strengthening controls mould
Block etc..
LVDS signal refers to Low Voltage Differential Signaling, is a kind of Low Voltage Differential Signal.?
In liquid crystal display, LVDS interface circuit includes two parts, i.e. drives the LVDS output interface circuit (LVDS transmitter) of plate side
LVDS input interface circuit (LVDS receiver) with liquid crystal panel side.LVDS transmitter will drive the low of plate main control chip output
Voltage in parallel RGB data signal and control signal are converted into low-voltage serial LVDS signal, then by driving plate and liquid crystal surface
Flexible cable (winding displacement) between plate passes the signal to the LVDS receiver of liquid crystal panel side.Serial is believed by LVDS receiver again
Number be converted to the parallel signal of TTL (transistor transistor logic, transistor-transistor logic) level, be sent to
Liquid crystal display screen sequencing contro and column driver circuitry.
Motion compensation is that a kind of consecutive frame that describes (adjacent here represents adjacent on encoding relation, on playing sequence
Two frames may not be adjacent) difference method for distinguishing, how each fritter describing an above frame specifically moves in present frame
Certain position is gone.One video sequence comprises a number of picture, and described picture is commonly referred to frame.Adjacent picture is the most very
Similar, say, that a video sequence contains a lot of redundancy.The purpose using motion compensation is this superfluous by eliminating
More than improve compression ratio.Therefore, this method is frequently used in video compress/Video Codec, is used for reducing video sequence
Spatial redundancy in row.
White balance is to describe an index of the white degree of accuracy that the mixing of red, green, blue three primary colours generates in display.Bai Ping
Weighing apparatus is the very important concept in one, telephotography field, can solve color rendition and a series of the asking of tone process by it
Topic.White balance is as electron image reproducing colors and truly produces, in the relatively morning of specialty field of photography white balance application, existing
Domestic electronic appliances (household video camera, digital camera) are also extensively used.But the development of technology makes white balance
Adjustment become increasingly simpler easily, but many user are it is not understood that the principle of white balance.The purpose of white balance is to make shooting
Machine image can accurately reflect the color situation of object.White balance includes the mode such as manual white balance and AWB.Permitted
Many people can run into such problem using DV shooting when: the image meeting of shooting in the room of daylight lamp
Seem greening, and the scenery shooting out under indoor tungsten light will be partially yellow, and the photo photographed in daylight shaded side is then
Somehow or other is the most blue, and reason is that arranging of white balance.White balance is a very abstract concept, the most popular understanding
It is exactly to allow white imaging still for white, if white imaging is still white, then the image of other scenery is just
Can be accustomed to close to the color vision of human eye.
Overdrive technique in liquid crystal display is used to promote the effective ways of display effect, when having shortening response
Between, improve the effect of fuzzy pictures.
The work process of the screen driving plate shown in Fig. 1 is: LVDS receiver port receives video stream data, described video
Flow data after the process of RGB data processing module, color enhancement module and motion compensating module process, sends to double-speed successively
Rate synchronous DRAM (DDR), line buffer module reads data from DDR, and by these data by LVDS signal
Transmission port sends.
Above-mentioned work process is improved by the present embodiment, it is provided that a kind of screen that can reduce drives the side of plate power consumption
Method, as shown in Figure 2.Described method is mainly: closes according to the video stream data after RGB data processing module processes or opens
Qi Ping drives the video processing module of intralaminar part, when all video processing modules that screen drives intralaminar part are all closed, and screen
Plate is driven to read video stream data from the DDR driving plate to be connected with this screen.If the data of continuous a few frame there are differences, then protect
Holding screen drives each module of intralaminar part normally to work.
The method of the present embodiment mainly includes that step 1 is to step 5.
In step 1: obtain the video stream data that Low Voltage Differential Signal receiving port receives, then perform step 2.
In step 2: turn off or on screen according to the video stream data that described Low Voltage Differential Signal receiving port receives
Drive the video processing module of intralaminar part, then perform step 3.
In step 3: judge that described screen drives all video processing modules of intralaminar part to be the most all closed, judging
Perform step 4 when result is for being, perform step 5 when judged result is no.
In step 4: from the Double Data Rate synchronous DRAM driving plate to be connected with described screen, read video
Flow data.
In steps of 5: the video processing module Close All being not turned off by described screen driving intralaminar part, step is then performed
Rapid 4.
The present embodiment drives being turned on and off of each video processing module of intralaminar part by control panel so that screen drive plate without
Each frame data all need to be processed, reduce screen to a certain extent and drive the power consumption of plate.
Embodiment 2:
As it is shown on figure 3, on the basis of embodiment 1, above-mentioned steps 2 connects according to described Low Voltage Differential Signal receiving port
The video stream data received turns off or on screen and drives the video processing module of intralaminar part can split into step 6 and step 7.
In step 6, it is judged that whether the video stream data that described Low Voltage Differential Signal receiving port receives exists even
Continuous multi-frame video flow data is identical, then performs step 7.
In step 7, turn off or on screen according to the judged result of step 6 and drive the video processing module of intralaminar part.
Present embodiments provide the foundation whether closing screen driving intralaminar part video processing module, and then make pent regarding
Frequently processing module is without all processing each frame data, reduces screen and drives the power consumption of plate.
Embodiment 3:
As shown in Figure 4, on the basis of embodiment 2, when the judged result of above-mentioned steps 6 is for being, perform step 8；When
When the judged result of step 6 is no, perform step 9.
Specifically, in step 8: all or part of video processing module closing described screen driving intralaminar part.
In step 9: keep described screen to drive all video processing modules of intralaminar part to be in opening.
Embodiment 4:
Screen drives plate to judge the video stream data after RGB data processing module processes.When described video flowing
Data exist continuous print multi-frame video flow data identical time, close screen and drive the color enhancement module of intralaminar part and motion compensation
Module, and other video processing modules are held open state.Then described color enhancement module and motion compensating module are monitored
Duty, after confirming that described color enhancement module and motion compensating module have been off, line buffer module is from DDR
Read video stream data.
Color enhancement module and motion compensating module, without processing each frame video stream data, reduce self
Power consumption, and then reduce the power consumption of whole screen driving plate.
Embodiment 5:
Screen drives plate to judge the video stream data after RGB data processing module processes.When described video flowing
Data exist continuous print multi-frame video flow data identical time, close screen drive intralaminar part color enhancement module, other videos
Processing module is held open state.Then the duty of described color enhancement module is monitored, when confirming described color enhancement mould
After block has been off, line buffer module reads video stream data from DDR.
Color enhancement module, without processing each frame video stream data, reduces the power consumption of self, and then reduces
Whole screen drives the power consumption of plate.
Embodiment 6:
The low-power consumption screen that the present embodiment proposes drives plate to be to drive intralaminar part to be integrated with video data comparison at conventional screen
Controller module.As it is shown in figure 5, the input of this module is connected with RGB data processing module, outfan respectively with color enhancement
Module, motion compensating module and line buffer module connect.
As shown in Figure 6 and Figure 7, video data comparison controller module is embedded in detecting unit, control unit, judging unit
Unit is read with video stream data.
The operation principle of described video data comparison controller module is:
Video stream data after the process of detecting unit detecting real-time RGB data processing module.
This video stream data is judged by the judgment sub-unit in control unit, when described judgment sub-unit is judged even
When the data of continuous multiframe (such as two continuous frames or three frames) are identical, the control subelement in control unit is turned off screen and is driven plate
Internal all video processing modules.
Judging unit judges that screen drives all video processing modules of intralaminar part to be the most all closed, if it is, regard
Frequently flow data reads unit control line buffer module directly reading video data from DDR；If it is not, then will be not turned off
Video processing module Close All.
Above-mentioned screen drives plate without all processing each frame data, reduces power consumption to a certain extent.If even
The data of continuous several frames there are differences, then keep screen to drive each video processing module of intralaminar part normally to work.I.e. driven by control panel
The purpose being turned on and off realizing shielding driving plate oneself power consumption reduction of the dynamic each module of intralaminar part.
Embodiment 7:
The present embodiment drives intralaminar part to be integrated with video data comparison controller module at conventional screen, as it is shown in figure 5, should
The input of module is connected with RGB data processing module, and outfan delays with color enhancement module, motion compensating module, row respectively
Rush device module and other video processing modules connect.
Video data comparison controller module is embedded in detecting unit, control unit, judging unit and video stream data and reads
Take unit.
The operation principle of described video data comparison controller module is:
Video stream data after the process of detecting unit detecting real-time RGB data processing module.
This video stream data is judged by the judgment sub-unit in control unit, when described judgment sub-unit is judged even
When the data of continuous multiframe (such as two continuous frames or three frames) are identical, the control subelement in control unit is turned off screen and is driven plate
Internal corresponding video processing module (such as color enhancement module and motion compensating module).
Judging unit judges that corresponding video processing module is the most all closed, if it is, video stream data
Read unit and control line buffer module directly reading video data from DDR；If it is not, then by corresponding Video processing
The video processing module Close All being not turned off in module.
Above-mentioned screen drives plate without all processing each frame data, reduces power consumption to a certain extent.If even
The data of continuous several frames there are differences, then keep screen to drive each video processing module of intralaminar part normally to work.I.e. driven by control panel
The purpose being turned on and off realizing shielding driving plate oneself power consumption reduction of the dynamic each module of intralaminar part.
Embodiment 8:
As it is shown in figure 5, on the basis of embodiment 6, it is also possible at video data comparison controller module with each video
Being respectively provided with switch between reason module, the state switched by control controls being turned on and off of each video processing module.
Described switch can use switch triode to realize.The pin of switch triode is identical with common audion, work
In cut-off region and saturation region, be equivalent to cut-out and the conducting of circuit.Switch triode can be widely applied in various drive circuit.
As shown in Figure 8, the using method of switch triode is: load resistance is directly connected across in power supply and switch triode
Colelctor electrode between, i.e. load resistance occupies on the loop of switch triode principal current.Input voltage vin is used for controlling to switch three
The unlatching (open) of pole pipe and Guan Bi (closed) action.When switch triode is opening, load current is just blocked；
Otherwise, when switch triode is closure state, electric current just can circulate.
Specifically, when Vin is low-voltage, owing to base stage does not has electric current, therefore colelctor electrode also no current passes through, and causes
The load being connected to collector terminal does not has electric current to pass through yet, and is equivalent to switch on state.Now switch triode works in
Cut-off (cut off) district.
In like manner, when input voltage vin is high voltage, owing to there being base current to pass through, therefore colelctor electrode flows through bigger
Amplify electric current so that load circuit is switched on, be equivalent to the closure state of switch.Now switch triode works in saturation region
(saturation)。
Above-mentioned switch triode is applied the screen in the present invention drive in plate, and structure is as shown in Figure 9.With color enhancement module
As a example by, using whole color enhancement module as the load of switch triode, be connected in the power supply Vc1 of color enhancement module with
Between the colelctor electrode of switch triode, the emitter stage of audion connects power supply ground.Video data comparison controller module has multiple
Control signal outfan, for controlling opening or disconnecting of different video processing module, wherein, video data comparison controller mould
The color enhancement control signal outfan of block is as the base control signal of the switch triode being connected with color enhancement module.
Motion compensating module, line buffer module and other video processing modules the most all use same connected mode to divide
It is not connected with multiple switch triodes.
Video data comparison controller module is by different outfan output control signals, to control different regarding respectively
Frequently being turned on and off of processing module.
Embodiment 9:
As it is shown in figure 5, on the basis of embodiment 6, can be in video data comparison controller module and each Video processing
Arranging switch between module, the state switched by control controls being turned on and off of all video processing modules.
Described switch can use switch triode to realize.The pin of switch triode is identical with common audion, work
In cut-off region and saturation region, be equivalent to cut-out and the conducting of circuit.Switch triode can be widely applied in various drive circuit.
As shown in Figure 8, the using method of switch triode is: load resistance is directly connected across in power supply and switch triode
Colelctor electrode between, i.e. load resistance occupies on the loop of switch triode principal current.Input voltage vin is used for controlling to switch three
The unlatching (open) of pole pipe and Guan Bi (closed) action.When switch triode is opening, load current is just blocked；
Otherwise, when switch triode is closure state, electric current just can circulate.
Specifically, when Vin is low-voltage, owing to base stage does not has electric current, therefore colelctor electrode also no current passes through, and causes
The load being connected to collector terminal does not has electric current to pass through yet, and is equivalent to switch on state.Now switch triode works in
Cut-off (cut off) district.
In like manner, when input voltage vin is high voltage, owing to there being base current to pass through, therefore colelctor electrode flows through bigger
Amplify electric current so that load circuit is switched on, be equivalent to the closure state of switch.Now switch triode works in saturation region
(saturation)。
Above-mentioned switch triode is applied the screen in the present invention drive in plate, and screen drives the structure of plate as shown in Figure 10.Institute
Video processing module is had to share a switching tube.This load, simultaneously as the load of switching tube, is gone here and there by all video processing modules
Being connected between public power Vcc and the colelctor electrode of switch triode of all video processing modules, the emitter stage of audion connects electricity
Seedbed.Video data comparison controller module has only to a control signal outfan, is used for controlling all video processing modules
While open or disconnect, the control signal outfan of video data comparison controller module is as the base stage control of switch triode
Signal processed.
The outfan output control signal of video data comparison controller module, to control all video processing modules simultaneously
Be turned on and off.
Embodiment 10:
On the basis of embodiment 7, can set between video data comparison controller module and each video processing module
Putting switch, the state switched by control controls being turned on and off of all video processing modules.
Described switch can use switch triode to realize.The pin of switch triode is identical with common audion, work
In cut-off region and saturation region, be equivalent to cut-out and the conducting of circuit.Switch triode can be widely applied in various drive circuit.
As shown in Figure 8, the using method of switch triode is: load resistance is directly connected across in power supply and switch triode
Colelctor electrode between, i.e. load resistance occupies on the loop of switch triode principal current.Input voltage vin is used for controlling to switch three
The unlatching (open) of pole pipe and Guan Bi (closed) action.When switch triode is opening, load current is just blocked；
Otherwise, when switch triode is closure state, electric current just can circulate.
Specifically, when Vin is low-voltage, owing to base stage does not has electric current, therefore colelctor electrode also no current passes through, and causes
The load being connected to collector terminal does not has electric current to pass through yet, and is equivalent to switch on state.Now switch triode works in
Cut-off (cut off) district.
In like manner, when input voltage vin is high voltage, owing to there being base current to pass through, therefore colelctor electrode flows through bigger
Amplify electric current so that load circuit is switched on, be equivalent to the closure state of switch.Now switch triode works in saturation region
(saturation)。
Above-mentioned switch triode is applied the screen in the present invention drive in plate, and screen drives the structure of plate as shown in figure 11.Institute
Video processing module is had to share a switching tube.This load, simultaneously as the load of switching tube, is gone here and there by all video processing modules
Being connected between public power Vcc and the colelctor electrode of switch triode of all video processing modules, the emitter stage of audion connects electricity
Seedbed.Video data comparison controller module has only to a control signal outfan, is used for controlling all video processing modules
While open or disconnect, the control signal outfan of video data comparison controller module is as the base stage control of switch triode
Signal processed.
As different from Example 9, between switch triode and each video processing module, voltage follower is increased.Voltage
The voltage of input is converted into the output voltage that multichannel is identical by follower.
The outfan output control signal of video data comparison controller module, to control all video processing modules simultaneously
Be turned on and off.
While it is disclosed that embodiment as above, but described content is only to facilitate understand the present invention and adopt
Embodiment, be not limited to the present invention.Technical staff in any the technical field of the invention, without departing from this
On the premise of spirit and scope disclosed in invention, in form and any amendment and change can be made in details implement,
But protection scope of the present invention, still must be defined in the range of standard with appending claims.
Claims (10)
1. reduce the method that screen drives plate power consumption, including:
Obtain the video stream data that screen drives the Low Voltage Differential Signal receiving port of plate to receive；
The video stream data received according to described Low Voltage Differential Signal receiving port turns off or on screen and drives regarding of intralaminar part
Frequently processing module；
Judge that described screen drives all video processing modules of intralaminar part to be the most all closed；
When judging that described screen drives all video processing modules of intralaminar part to be all closed, drive plate even from described screen
The Double Data Rate synchronous DRAM connect reads video stream data.
Method the most according to claim 1, it is characterised in that receive according to described Low Voltage Differential Signal receiving port
Video stream data turns off or on screen and drives the video processing module of intralaminar part, including:
Judge whether the video stream data that described Low Voltage Differential Signal receiving port receives exists continuous print multi-frame video stream
Data are identical；
Turn off or on screen according to judged result and drive the video processing module of intralaminar part.
Method the most according to claim 2, it is characterised in that turn off or on screen according to judged result and drive intralaminar part
Video processing module, including:
Continuous print multi-frame video stream is there is in judging the video stream data that described Low Voltage Differential Signal receiving port receives
When data are identical, all or part of video processing module closing described screen driving intralaminar part.
Method the most according to claim 2, it is characterised in that turn off or on screen according to judged result and drive intralaminar part
Video processing module, including:
Video stream data adjacent in judging the video stream data that described Low Voltage Differential Signal receiving port receives is the most not
Time identical, described screen is made to drive the video processing module of intralaminar part to be in opening.
The most according to the method in any one of claims 1 to 3, it is characterised in that described screen drives at the video of intralaminar part
It is one or more that reason module includes in the following: color enhancement module, motion compensating module and line buffer module.
6. low-power consumption screen drives a plate, including video data comparison controller module, described video data comparison controller mould
Block includes:
Detecting unit, is configured to obtain the video stream data that screen drives the Low Voltage Differential Signal receiving port of plate to receive；
Control unit, is configured to the video stream data according to described Low Voltage Differential Signal receiving port receives and turns off or on screen
Drive the video processing module of intralaminar part；
Judging unit, is configured to judge that described screen drives all video processing modules of intralaminar part to be the most all closed；
Video stream data reads unit, is configured to judge that described screen drives at all videos of intralaminar part at described judging unit
When reason module is all closed, from the Double Data Rate synchronous DRAM driving plate to be connected with described screen, read video
Flow data.
Low-power consumption screen the most according to claim 6 drives plate, it is characterised in that described control unit includes:
Judgment sub-unit, is configured to judge whether exist in the video stream data that described Low Voltage Differential Signal receiving port receives
Continuous print multi-frame video flow data is identical；
Control subelement, be configured to the judged result according to described judgment sub-unit and turn off or on regarding of screen driving intralaminar part
Frequently processing module.
Low-power consumption screen the most according to claim 7 drives plate, it is characterised in that described control subelement concrete configuration is:
Continuous print is there is in described judgment sub-unit judges the video stream data that described Low Voltage Differential Signal receiving port receives
When multi-frame video flow data is identical, all or part of video processing module closing described screen driving intralaminar part.
Low-power consumption screen the most according to claim 7 drives plate, it is characterised in that described control subelement concrete configuration is:
Video adjacent in described judgment sub-unit judges the video stream data that described Low Voltage Differential Signal receiving port receives
When flow data is different from, described screen is made to drive the video processing module of intralaminar part to be in opening.
10. drive plate according to the low-power consumption screen according to any one of claim 6 to 8, it is characterised in that in described screen drives plate
It is one or more that the video processing module in portion includes in the following: color enhancement module, motion compensating module and row buffering
Device module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610661821.9A CN106060341A (en) | 2016-08-12 | 2016-08-12 | Method for reducing power consumption of screen driver board and low-power-consumption screen driver board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610661821.9A CN106060341A (en) | 2016-08-12 | 2016-08-12 | Method for reducing power consumption of screen driver board and low-power-consumption screen driver board |
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| Publication Number | Publication Date |
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| CN106060341A true CN106060341A (en) | 2016-10-26 |
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| CN201610661821.9A Pending CN106060341A (en) | 2016-08-12 | 2016-08-12 | Method for reducing power consumption of screen driver board and low-power-consumption screen driver board |
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