CN105243982A - Driving controller and driving method used for display - Google Patents
Driving controller and driving method used for display Download PDFInfo
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Abstract
The invention discloses a driving controller and a driving method used for a display. The driving controller comprises a switching module, a data compression module, a frame storage module, a data decompression module and a data driving module. The switching module obtains first image data and also obtains a switching instruction. When the switching module obtains a switching instruction indicating that the mode is switched to be a first working mode, the first image data is sent to the data compression module so as to be compressed to be second image data. The frame storage module receives and stores the second image data, sends the second image data to the data decompression module. The second image data is decompressed by the data decompression module, and then third image data is obtained. When the switching module obtains a switching instruction indicating that the mode is switched to be a second working mode, the first image data is sent to the data driving module, and the data driving module converts the third image data or the first image data into a data driving voltage signal. Compared with the prior art, the driving controller and the driving method have the advantages that the storage space of the frame storage module is reduced, the cost is reduced, and the power consumption produced from image data transmission is also reduced.
Description
Technical field
The present invention relates to display technology field, particularly relate to a kind of driving governor for display and driving method.
Background technology
At present, whether the driving governor (or driving circuit, drive IC) of display is according to having frame storage module (as RAM) and be divided into two kinds.
When the master controller (as CPU) of display does not upgrade display frame, view data timing in Frame storage module can be taken out and convert data drive voltage signal to by the driving governor with Frame storage module, and then to make the display screen of display can display frame always in the respective data lines being sent to display, now master controller adopts command mode (commandmode) transmit image data to Frame storage module by mobile Processing Interface (MIPI interface).Therefore with Frame storage module driving governor master controller display tableaux time without the need to the continual transmission view data of master controller, there is effect that is low in energy consumption, power saving.But for storing the multidigit (bit of each pixel in view data, bit) the Frame storage module of data needs a large amount of storage spaces, and pixel depth (or pixel resolution) is larger, the storage space needed is larger, and this not only can reduce the yield of driving governor but also the cost of driving governor is increased.
And be directly receive the view data adopting image mode (videomode) to transmit by mobile Processing Interface by master controller without the driving governor of Frame storage module, and view data is directly changed into the display screen that data drive voltage signal is used for driving display, if master controller does not send view data, then the display screen of display can not receive and convert effective data drive voltage signal to, and now display screen can show exception.Although the driving governor therefore without Frame storage module still needs the continual output image data of master controller when master controller shows tableaux and then is converted to data drive voltage signal, have the advantages that power consumption is high, but it does not have Frame storage module and makes the cost of driving governor lower.
To sum up, the driving governor of existing with or without Frame storage module all can not meet the requirement of display to power consumption and cost simultaneously.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of driving governor and driving method of display, can switch to Frame storage module and the driving governor without Frame storage module according to switching command, and when with Frame storage module, by the figure place compression storing data of view data and then the storage space reducing Frame storage module, the cost of driving governor is reduced, also reduces the power consumption that image data transmission produces simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts provides a kind of driving governor of display, and this driving governor comprises handover module, data compressing module, Frame storage module, data decompression module and data-driven module; Handover module has the first view data of n-bit data for obtaining each primary color component in each pixel, obtain the switching command switching to the first mode of operation or the second mode of operation simultaneously; When handover module gets the switching command switching to the first mode of operation, first view data is sent to data compressing module, each primary color component in each pixel in first view data is compressed into the corresponding pixel points with m-bit data by data compressing module, and then forms the second view data; Frame storage module is used for receiving and storing the second view data, and be sent to data decompression module, be sent to data-driven module to be condensed to after each primary color component in each pixel has the 3rd view data of n-bit data by the second view data decompress(ion) by data decompression module; When handover module gets the switching command switching to the second mode of operation, first view data is sent to data-driven module, data-driven module is used for the 3rd view data or the first view data to be converted to data drive voltage signal, and utilizes the display screen of data drive voltage signal driving display to show further; Wherein n, m are positive integers, and m is less than n.
Wherein, data compressing module is further used for 1 bit data n-bit data of each primary color component in pixel each in the first view data being compressed into corresponding primary color component in the corresponding pixel points in the second view data.
Wherein, data compressing module is further used for the numerical value of numerical value as 1 bit data of primary color component corresponding in the corresponding pixel points in the second view data of the most significant digit data of the n-bit data of each primary color component in each pixel in intercepting first view data.
Wherein, data decompression module is further used for 1 bit data of each primary color component in pixel each in the second view data to expand to n-bit data to obtain the 3rd view data with identical numerical value.
Wherein, data-driven module comprises data latch unit, D/A switch unit and source drive unit further; Data latch unit is used for receiving and latching the 3rd view data or the first view data; D/A switch unit is used for the 3rd view data or the first view data to be converted to data drive voltage signal; Source drive unit is for being applied to the respective data lines of display by data drive voltage signal.
For solving the problems of the technologies described above, another technical solution used in the present invention is, a kind of driving method for display is provided, this driving method comprises the following steps: obtain the first view data that each primary color component in each pixel has n-bit data, obtains the switching command switching to the first mode of operation or the second mode of operation simultaneously; Switch to the switching command of the first mode of operation if get, each primary color component of each pixel boil down in the first view data is had the corresponding pixel points of m-bit data, and then form the second view data; Second view data is stored; The the second view data decompress(ion) stored is condensed to the 3rd view data that each primary color component in each pixel has n-bit data; The data drive voltage signal of the display screen being used for driving display is generated according to the 3rd view data; Switch to the switching command of the second mode of operation if get, directly generate data drive voltage signal according to the first view data; Wherein n, m are positive integers, and m is less than n.
Wherein, the each primary color component of each pixel boil down in first view data is had the corresponding pixel points of m-bit data, and then the step forming the second view data comprises: 1 bit data n-bit data of each primary color component in pixel each in the first view data being compressed into corresponding primary color component in the corresponding pixel points in the second view data.
Wherein, the step n-bit data of each primary color component in pixel each in the first view data being compressed into 1 bit data of corresponding primary color component in the corresponding pixel points in the second view data comprises: the numerical value of numerical value as 1 bit data of corresponding primary color component in the corresponding pixel points in the second view data intercepting the most significant digit data of the n-bit data of each primary color component in each pixel in the first view data.
Wherein, the second view data decompress(ion) stored is condensed to the step that each primary color component in each pixel has the 3rd view data of n-bit data to comprise: 1 bit data of each primary color component in pixel each in the second view data is expanded to n-bit data to obtain described 3rd view data with identical numerical value.
Wherein, the first view data refreshing frequency is in a first operation mode less than refreshing frequency in the second operation mode.
The invention has the beneficial effects as follows: the driving governor of display provided by the invention provides two kinds of mode of operations, in the first operational mode the view data of input is compressed and Frame storage, and utilize the view data after compression to show, be suitable for the relatively less and image that refresh rate is relatively low of display color content (such as, the weather scene image of maximum 8 kinds of colors or the static interfaces of maximum 8 kinds of colors), and directly utilize the view data of input to show in the second operation mode, be suitable for display color content is relatively high or refresh rate is relatively high image (such as, video image).Compared with prior art, the present invention can switch to Frame storage module and the driving governor without Frame storage module according to switching command, and when with Frame storage module, by the figure place compression storing data of view data and then the storage space reducing Frame storage module, the cost of driving governor is reduced, also reduces the power consumption that image data transmission produces simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of driving governor one embodiment of display provided by the invention;
Fig. 2 is the schematic diagram that in Fig. 1, the first Image Data Compression is become the second view data by data compressing module
Fig. 3 is the schematic diagram for storing each primary color component in each pixel in prior art with the Frame storage module of 8 bit data;
Fig. 4 is the schematic diagram for storing each primary color component in each pixel in Fig. 1 with the Frame storage module of 1 bit data;
Fig. 5 is that in Fig. 1, data decompression module obtains the schematic diagram that each primary color component in each pixel has the 3rd view data of 8 bit data;
Fig. 6 is the schematic flow sheet of driving method one embodiment for display provided by the invention.
Embodiment
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Refer to Fig. 1, Fig. 1 is the schematic block diagram of driving governor one embodiment of display provided by the invention.As shown in Figure 1, this driving governor 10 comprises handover module 110, data compressing module 120, Frame storage module 130, data decompression module 140 and data-driven module 150; Handover module 110 has the first view data of n-bit data for obtaining each primary color component in each pixel, obtain the switching command switching to the first mode of operation or the second mode of operation simultaneously; When handover module 110 gets the switching command switching to the first mode of operation, first view data is sent to data compressing module 120, each pixel in first view data is compressed into the corresponding pixel points that each primary color component has m-bit data by data compressing module 120, and then forms the second view data; Frame storage module 130 is for receiving and storing the second view data, and be sent to data decompression module 140, be sent to data-driven module 150 to be condensed to after each primary color component in each pixel has the 3rd view data of n-bit data by the second view data decompress(ion) by data decompression module 140; When handover module 110 gets the switching command switching to the second mode of operation, first view data is sent to data-driven module 150, data-driven module 150 for the 3rd view data or the first view data are converted to data drive voltage signal, and utilizes the display screen of data drive voltage signal driving display to show further; Wherein n, m are positive integers, and m is less than n.
Wherein, the first view data of being sent by mobile Processing Interface (not shown in figure 1) for the master controller (not shown in figure 1) that receives display of handover module 110 and switching command.
Wherein, in above-mentioned view data, each pixel includes three primary color components, namely in first, second, and third view data, each pixel includes three primary color components, such as RGB component (or claiming red light component, green component and blue light components).Certainly, as known to those skilled in the art, in other embodiments, each pixel can comprise other primary color components.
Such as, handover module 110 to get in the first view data each primary color component in each pixel and has 8 bit data, namely n is 8, then in the first view data, each pixel comprises three primary color components, namely each pixel has 24 bit data, represents that the display screen of display can show 24 true color.In second view data, in each pixel, each primary color component has m-bit data, and optional m is any positive integer being less than n.Now m is optional be less than 8 any positive integer, as 1,2,3,5 or other numerical value.
Wherein, data compressing module 120 is further used for 1 bit data n-bit data of each primary color component in pixel each in the first view data being compressed into corresponding primary color component in the corresponding pixel points in the second view data.
Concrete, data compressing module 120 is for intercepting the numerical value of numerical value as 1 bit data of primary color component corresponding in the corresponding pixel points in the second view data of the most significant digit data of the n-bit data of each primary color component in each pixel in the first view data.
Refer to Fig. 2, Fig. 2 is the schematic diagram that in Fig. 1, the first Image Data Compression is become the second view data by data compressing module.As shown in Figure 2, have 8 bit data with each primary color component in pixel each in the first view data and carry out example, it represents each primary color component can show 2
8namely 256 luminance levels, are also called 256 GTGs, now because each pixel has 24 bit data, can show 2
24plant color.In Fig. 2, example is that in the first view data, in a pixel, each primary color component has 8 bit data, specifically in this pixel, 8 bit data of corresponding red light component (R component) are 10010000,8 bit data of corresponding green component (G component) are 10010000,8 bit data of corresponding blue light components (B component) are 00000000, and namely 24 bit data of this pixel are 100100001001000000000000.Data compressing module 120 intercepts the most significant digit data i.e. numerical value of the first bit data of 8 bit data of each primary color component, namely the numerical value of the numerical value of the most significant digit of red light component, the numerical value of the most significant digit of green component and the most significant digit of blue light components is respectively 1,1 and 0, using the numerical value of 3 bit data 110 as 1 bit data of corresponding primary color component in the corresponding pixel points in the second view data.
In other embodiments, if data compressing module 120 each primary color component in each pixel in first view data is compressed into m be not 1 other numerical value as being compressed into 2 bit data time, in optional intercepting first image in each pixel the default m position of the n-bit data of each primary color component if the numerical value of 2 bit data is as the numerical value of 2 bit data of primary color component corresponding in corresponding pixel points in the second view data, as in above-mentioned Fig. 2, the most significant digit of 8 bit data of each primary color component i.e. numerical value of first and five-digit number certificate in each pixel in optional intercepting first view data, namely be 1 and 0 respectively for first and the 5th of red light component, first and the 5th for green component is 1 and 0 respectively, first and the 5th for blue light components is 0 and 0 respectively, now by 10, 10 and 00 respectively as the numerical value of 2 bit data of primary color component corresponding in corresponding pixel points in the second view data.Wherein intercept the default position of presetting in m position to be arranged according to the figure place data of each primary color component in pixel each in display by developer or user.
Refer to Fig. 3 and Fig. 4, Fig. 3 is the schematic diagram for storing each primary color component in each pixel in prior art with the Frame storage module of 8 bit data, and Fig. 4 is the schematic diagram for storing each primary color component in each pixel in Fig. 1 with the Frame storage module of 1 bit data.As shown in Figure 3, Frame storage module 130' of the prior art is for storing 8 bit data that in each pixel 131', three primary color components have respectively, as shown in Figure 3,8 bit data of corresponding red light component represent with R1, R2, R3, R4, R5, R6, R7 and R8 example, 8 bit data of corresponding green component represent with G1, G2, G3, G4, G5, G6, G7 and G8 example, 8 bit data of corresponding blue light components represent with B1, B2, B3, B4, B5, B6, B7 and B8 example, and in prior art, each pixel 131' needs 24 storage spaces.Refer to shown in Fig. 4, when data compressing module 120 intercepts the numerical value of most significant digit in 8 bit data of each primary color component in each pixel 131' in the first view data, namely the numerical value of first R1 of red light component is intercepted, intercept the numerical value of first G1 of green component, after the numerical value of the numerical value of first B1 intercepting blue light components as 1 bit data of primary color component corresponding in corresponding pixel points 131 in the second view data, Frame storage module 130 stores 1 bit data of corresponding primary color component in corresponding pixel points 131, namely Frame storage module 130 stores the R1 bit data of red light component in each pixel 131, the G1 bit data of green component and the B1 bit data of blue light components, now the storage space of the corresponding each pixel 131 of Frame storage module 130 becomes 3 from 24 of the prior art, reduce the storage space of Frame storage module 130' greatly, the cost of Frame storage module of the present invention 130 pairs of driving governors 10 does not almost increase, but also the second view data timed sending to the data decompression module 140 in Frame storage module 130 can be used for subsequent conversion and become data drive voltage signal, reduce master controller sends the first view data and transmission power consumption from switching command to handover module 110.
Wherein, data decompression module 140 is further used for 1 bit data of each primary color component in pixel each in the second view data to expand to n-bit data to obtain the 3rd view data with identical numerical value.
Refer to Fig. 5, Fig. 5 is that in Fig. 1, data decompression module obtains the structural representation that each primary color component in each pixel has the 3rd view data of 8 bit data.As shown in Figure 5, shown in composition graphs 2, in second view data, in a pixel, three primary color components have 1 bit data respectively, its numerical value is respectively 1, 1 and 0, then expand to n position as 88 bit data obtaining corresponding primary color component in corresponding pixel points in the 3rd view data with identical numerical value respectively, concrete, in second view data, 1 bit value of red light component is that the Data expansion of 1 is 8 and obtains 11111111, in second view data, 1 bit value of green component is that the Data expansion of 1 is 8 and obtains 11111111, in second view data, 1 bit value of blue light components is that the Data expansion of 0 is 8 and obtains 00000000, and then using three of above-mentioned expansion 8 bit data as corresponding red light component in corresponding pixel points in the 3rd view data, 8 bit data of green component and blue light components, in 3rd view data, 24 bit data of corresponding pixel points are 111111111111111100000000.
In other embodiments, if data decompression module 140 by each primary color component in each pixel in the second view data be not 1 bit data other numeric datas as 2 bit data decompress time, optional numerical value identical according to this for bits per inch in 2 bit data is expanded respectively preset expansion figure place after obtain n position as 8 bit data so that formed the 3rd view data.As in above-mentioned Fig. 2, if obtain the second view data after the most significant digit intercepting 8 bit data of each primary color component in each pixel in the first view data i.e. numerical value of first and five-digit number certificate, then now red light component in a pixel in the second view data, the numerical value of 2 bit data of green component and blue light components is 10 respectively, 10 and 00, optionally expand to 4 respectively with identical numerical value by first of primary color component each in this pixel in the second view data respectively with second data, namely in red light component, the numerical value 10 of 2 bit data forms 11110000 after expanding 4 respectively, in green component, the numerical value 10 of 2 bit data forms 11110000 after expanding 4 respectively, in blue light components, the numerical value 10 of 2 bit data forms 00000000 after expanding 4 respectively, and then the corresponding primary color component obtained in the 3rd view data in corresponding pixel points, now in the 3rd view data, 24 bit data of this pixel are 111100001111000000000000, the 3rd view data is obtained after pixel each in the second view data all decompresses.Wherein in the second view data, in each pixel, the default expansion figure place of 2 bit data when decompressing of each primary color component can be arranged according to the figure place data of each primary color component in each pixel of display by developer or user.
Be understandable that, the first view data and the 3rd view data identical or different.Each primary color component in each pixel is become to have the second view data of 1 bit data the first Image Data Compression for data compressing module 120, when in pixel each in the first view data, the numerical value of all bit data of each primary color component is identical, when numerical value as 8 bit data of each primary color component is identical, the 3rd view data obtained through data decompression module 140 is then identical with the first view data, otherwise the 3rd view data obtained through data decompression module 140 is then different from the first view data.
Wherein, if in each pixel, three primary color components and red light component, green component and blue light components have 1 bit data respectively in the second view data, the 3rd view data after follow-up data decompression module 140 decompresses is converted to after data drive voltage signal through data-driven module 150 has the color shown in table 1 on the display screen of display.
In each pixel of table 1, three primary color components have the color set that 1 bit data can realize respectively
| R1 bit value | G1 bit value | B1 bit value | Realize color |
| 1 | 1 | 1 | White |
| 1 | 1 | 0 | Yellow |
| 1 | 0 | 1 | Pink colour |
| 1 | 0 | 0 | Red |
| 0 | 1 | 1 | Cyan |
| 0 | 0 | 1 | Blue |
| 0 | 1 | 0 | Green |
| 0 | 0 | 0 | Black |
Please continue to refer to Fig. 1, data-driven module 150 comprises data latch unit 151, D/A switch unit 152 and source drive unit 153 further; Data latch unit 151 is for receiving and latching the 3rd view data or the first view data; D/A switch unit 152 is for being converted to data drive voltage signal by the 3rd view data or the first view data; Source drive unit 153 shows with the display screen of driving display in respective data lines (not shown in figure 1) data drive voltage signal being applied to display.
In one embodiment, time when the display of mobile phone needs to show dynamic menu in real time as playing video file, handover module 110 in the driving governor 10 of the display of this mobile phone gets each primary color component in each pixel that mobile phone master controller sent by mobile Processing Interface with certain refreshing frequency to be had the first view data of 8 bit data and switches to the switching command of the second mode of operation, first view data is sent to data-driven module 150 by handover module 110 further, data-driven module 150 is for being converted to data drive voltage signal by the first view data, and utilize data drive voltage signal to drive the display screen of mobile telephone display to show further.If wherein refreshing frequency is 60Hz, then represent that handover module 110 obtained 60 frame first view data in one second, data-driven module 150 drives display screen to show with the refreshing frequency of 60Hz equally simultaneously.That is, now, the refreshing frequency of the first view data that handover module 110 receives equals the refreshing frequency of the display screen of display.
When the display of mobile phone needs to show weather scene, as mobile phone be in leather sheath pattern time, namely close the leather sheath of mobile phone peripheral hardware time, handover module 110 receives each primary color component in each pixel that mobile phone master controller sends to be had the first view data of 8 bit data and switches to the switching command of the first mode of operation, concrete, 24 bit data needing the pixel of display in first view data for raindrop are OX000080 (sexadecimal), transferring scale-of-two to is 000000000000000011110000, wherein for red light component, 8 bit data of green component and blue light components are respectively 00000000, 00000000 and 11110000, red light component in corresponding pixel points in the second view data obtained after data compressing module 120, the numerical value of 1 bit data of green component and blue light components is respectively 0, 0 and 1, shown in associative list 1, follow-up data driver module 150 can be blue in the display screen display of display after changing.If in like manner need 24 bit data of the pixel of display to be OX808000 (sexadecimal) for the sun in the first view data, transferring scale-of-two to is 111100001111000000000000, wherein for red light component, 8 bit data of green component and blue light components are respectively 11110000, 11110000 and 00000000, red light component in corresponding pixel points in the second view data obtained after data compressing module 120, the numerical value of 1 bit data of green component and blue light components is respectively 1, 1 and 0, shown in associative list 1, follow-up data driver module 150 can be yellow in the display screen display of display after changing.
Be understandable that, the 3rd view data after developer or the optional direct color by needs display of user decompress in above-mentioned table 1 is as the first view data of the input of master controller.
Be understandable that, because Frame storage module 130 has the storage space of 1 bit data for each primary color component in each pixel 131, the Frame storage module 130' of 8 bit data is needed compared with each primary color component in pixel 131' each in prior art, the cost of Frame storage module of the present invention 130 pairs of driving governors 10 is almost without increase, but also the second view data timing output to data decompression module 140 can be used for subsequent conversion be drive voltage signal, can normally show to make the LCDs of mobile phone.If the refreshing frequency of image is 60Hz when the second mode of operation, namely the display screen of master controller and display is all upgrade 60 frame image datas in 1 second, so when the first mode of operation master controller without the need to real-time update weather scene or other scenes, optional default update time, as 1 second, 60 seconds or other numerical value upgrade 1 frame image data, handover module 110 correspondence receives the first view data with the refreshing frequency of 1Hz or lower, and the power consumption that handover module 110 can be made to produce compared with obtaining the first view data during the second mode of operation significantly reduces.Meanwhile, data-driven module 150 still controls display screen with the refreshing frequency of 60Hz and shows, and such as, by carrying out timing to Frame storage module 130, makes it export the second image to data decompression module 140 with the refreshing frequency of 60Hz.That is, the refreshing frequency of the first view data that receives of handover module 110 is much smaller than the refreshing frequency of display screen.
Be understandable that, when display needs display tableaux or the less and image that refresh rate is lower of display color content, because mobile Processing Interface sends the first view data to handover module 110 with command mode, make follow-up data decompression module 140 timing can receive the second view data from frame processing module 130, and then be data drive voltage signal by being used for subsequent conversion after the second view data decompression.Therefore the frequency that handover module 110 obtains the first view data when the first mode of operation is less than the frequency obtaining the first view data when the second mode of operation.
Refer to Fig. 6, Fig. 6 is the schematic flow sheet of driving method one embodiment for display provided by the invention.As shown in Figure 6, this driving method comprises the following steps:
Step 601: obtain the first view data that each primary color component in each pixel has n-bit data, obtains the switching command switching to the first mode of operation or the second mode of operation simultaneously.
Step 602: the switching command switching to the first mode of operation if get, has the corresponding pixel points of m-bit data by each primary color component of each pixel boil down in the first view data, and then forms the second view data; Wherein n, m are positive integers, and m is less than n.
Step 603: the second view data is stored.
Step 604: the second view data decompress(ion) stored is condensed to the 3rd view data that each primary color component in each pixel has n-bit data.
Step 605: the data drive voltage signal generating the display screen being used for driving display according to the 3rd view data.
Step 606: the switching command switching to the second mode of operation if get, directly generates data drive voltage signal according to the first view data.
Wherein, display in present embodiment has identical structure with the display in driving governor one embodiment of aforementioned display device, the executable operations of the corresponding handover module 110 of step 601-step 606, data compressing module 120, Frame storage module 130, data decompression module 140 and data-driven module 150, repeats no more herein.
Wherein, the first view data refreshing frequency is in a first operation mode less than refreshing frequency in the second operation mode.
Wherein, in step 602, each primary color component of each pixel boil down in first view data is had the corresponding pixel points of m-bit data, and then the step forming the second view data comprises: 1 bit data n-bit data of each primary color component in pixel each in the first view data being compressed into corresponding primary color component in the corresponding pixel points in the second view data.
Concrete, the step n-bit data of each primary color component in pixel each in the first view data being compressed into 1 bit data of corresponding primary color component in the corresponding pixel points in the second view data comprises: the numerical value of numerical value as 1 bit data of corresponding primary color component in the corresponding pixel points in the second view data intercepting the most significant digit data of the n-bit data of each primary color component in each pixel in the first view data.
Further, in step 604, the second view data decompress(ion) stored is condensed to the step that each primary color component in each pixel has the 3rd view data of n-bit data to comprise: 1 bit data of each primary color component in pixel each in the second view data is expanded to n-bit data to obtain the 3rd view data with identical numerical value.
Wherein, directly further comprising the steps according to the step of described first view data generation data drive voltage signal in step 605 or 606:
Latch the 3rd view data or the first view data.
3rd view data or the first view data are converted to data drive voltage signal.
Data drive voltage signal is applied in the respective data lines of display.
Be understandable that, in driving governor one embodiment of the corresponding aforementioned display device of step difference that the step directly generating data drive voltage signal according to described first view data in above-mentioned steps 605 or 606 comprises, the executable operations of data latch unit 151, D/A switch unit 152 and source drive unit 153, repeats no more herein.
Be different from the situation of prior art, the driving governor of display provided by the invention provides two kinds of mode of operations, in the first operational mode the view data of input is compressed and Frame storage, and utilize the view data after compression to show, be suitable for the relatively less and image that refresh rate is relatively low of display color content (such as, the static interfaces of color in the weather scene image of maximum 8 kinds of colors or maximum 8), and directly utilize the view data of input to show in the second operation mode, be suitable for display color content is relatively high or refresh rate is relatively high image (such as, video image).Compared with prior art, the present invention can switch to Frame storage module and the driving governor without Frame storage module according to switching command, and when with Frame storage module, by the figure place compression storing data of view data and then the storage space reducing Frame storage module, the cost of driving governor is reduced, also reduces the power consumption that image data transmission produces simultaneously.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. for a driving governor for display, it is characterized in that, described driving governor comprises handover module, data compressing module, Frame storage module, data decompression module and data-driven module; Described handover module has the first view data of n-bit data for obtaining each primary color component in each pixel, obtain the switching command switching to the first mode of operation or the second mode of operation simultaneously; When described handover module gets the switching command switching to the first mode of operation, described first view data is sent to described data compressing module, each pixel in described first view data is compressed into the corresponding pixel points that each primary color component has m-bit data by described data compressing module, and then forms the second view data; Described Frame storage module is used for receiving and storing described second view data, and be sent to described data decompression module, be sent to described data-driven module to be condensed to after each primary color component in each pixel has the 3rd view data of n-bit data by described second view data decompress(ion) by described data decompression module; When described handover module gets the switching command switching to the second mode of operation, described first view data is sent to described data-driven module, described data-driven module is used for described 3rd view data or described first view data to be converted to data drive voltage signal, and utilizes described data drive voltage signal to drive the display screen of described display to show further;
Wherein n, m are positive integers, and m is less than n.
2. driving governor according to claim 1, it is characterized in that, described data compressing module is further used for 1 bit data n-bit data of each primary color component in each pixel in described first view data being compressed into corresponding primary color component in the corresponding pixel points in described second view data.
3. driving governor according to claim 2, it is characterized in that, described data compressing module is further used for the numerical value of numerical value as 1 bit data of corresponding primary color component in the corresponding pixel points in described second view data of the most significant digit data of the n-bit data intercepting each primary color component in each pixel in described first view data.
4. driving governor according to claim 2, it is characterized in that, described data decompression module is further used for 1 bit data of each primary color component in each pixel in described second view data to expand to n-bit data to obtain described 3rd view data with identical numerical value.
5. the driving governor according to Claims 1-4 any one, is characterized in that, described data-driven module comprises data latch unit, D/A switch unit and source drive unit further; Described data latch unit is used for receiving and latching described 3rd view data or described first view data; Described D/A switch unit is used for described 3rd view data or described first view data to be converted to described data drive voltage signal; Described source drive unit is for being applied to the respective data lines of described display by described data drive voltage signal.
6. for a driving method for display, it is characterized in that, said method comprising the steps of:
Obtain the first view data that each primary color component in each pixel has n-bit data, obtain the switching command switching to the first mode of operation or the second mode of operation simultaneously;
Switch to the switching command of the first mode of operation if get, each primary color component of each pixel boil down in described first view data is had the corresponding pixel points of m-bit data, and then form the second view data;
Described second view data is stored;
The described second view data decompress(ion) stored is condensed to the 3rd view data that each primary color component in each pixel has n-bit data;
The data drive voltage signal of the display screen for driving described display is generated according to described 3rd view data;
Switch to the switching command of the second mode of operation if get, directly generate described data drive voltage signal according to described first view data;
Wherein n, m are positive integers, and m is less than n.
7. method according to claim 6, is characterized in that, the described corresponding pixel points each primary color component of each pixel boil down in described first view data with m-bit data, and then the step forming the second view data comprises:
The n-bit data of each primary color component in each pixel in described first view data is compressed into 1 bit data of corresponding primary color component in the corresponding pixel points in described second view data.
8. method according to claim 7, it is characterized in that, in the described corresponding pixel points n-bit data of each primary color component in each pixel in described first view data be compressed in described second view data, the step of 1 bit data of corresponding primary color component comprises:
Intercept the numerical value of numerical value as 1 bit data of corresponding primary color component in the corresponding pixel points in described second view data of the most significant digit data of the n-bit data of each primary color component in each pixel in described first view data.
9. method according to claim 7, is characterized in that, describedly the described second view data decompress(ion) stored is condensed to the step that each primary color component in each pixel has the 3rd view data of n-bit data and comprises:
1 bit data of each primary color component in each pixel in described second view data is expanded to n-bit data to obtain described 3rd view data with identical numerical value.
10. the method according to claim 6 to 9 any one, is characterized in that, described first view data refreshing frequency is in this first operative mode less than the refreshing frequency under described second mode of operation.
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