CN1428755A - Overload drive system of liquid crystal display and its method - Google Patents
Overload drive system of liquid crystal display and its method Download PDFInfo
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- CN1428755A CN1428755A CN 01144873 CN01144873A CN1428755A CN 1428755 A CN1428755 A CN 1428755A CN 01144873 CN01144873 CN 01144873 CN 01144873 A CN01144873 A CN 01144873A CN 1428755 A CN1428755 A CN 1428755A
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Abstract
The present invention provides an overload drive system for display, and is characterized by that its main machine possesses display card interface for connecting with display, said display card interface is equipped with coupled display card chip and internal memory. One portion separated from video internal memory is used as frmae buffer for storing the last state data of predisplayed data. The overload voltage reference list is coupled to display card chip for providing contrast between the overload drive voltage and the last state data, so that according to the last state data fetched from frame buffer the display card chip can obtain correspondent overload drive voltage from overload voltage refrence list, and can transfer the overload drink voltage and predisplayed data into display and display them on the panel.
Description
Technical field
The invention relates to a kind of driving circuit and method of display, and particularly relevant for a kind of circuit of display driving and method with overload driving (overdrive) function.And particularly relevant for a kind of LCD (liquid crystal display, LCD) overload driving circuit and method.
Background technology
(liquid crystal display LCD), utilizes the effect of extra electric field or heat to LCD, makes liquid crystal molecule be changed to other molecule assortment state by specific initial stage molecule assortment, and optical property is changed, and converts the variation of vision to.In addition, LCD also has the advantage of low operating voltage, low consumption electricity etc., makes it be fit to be driven with integrated (large scaleIntegrated LSI) circuit on a large scale.At present, (it is more and more universal as the video picture pixel (pixel) of LCD to use TFT to come for thin filmtransistor, TFT) development of technology and progress owing to thin film transistor (TFT).
With the physical characteristics of liquid crystal molecule, must liquid crystal molecule be turned to by extra electric field (voltage), and change the transmittance of each pixel on the liquid crystal panel, to reach the purpose of video picture by turning to of liquid crystal molecule.Yet because the response time of liquid crystal molecule is slower, when applying data voltage (data voltage) as 5 volts, liquid crystal molecule also can't reach 5 volts of pairing anglecs of rotation within preset time.
Therefore, as mentioned above, the reaction velocity of LCD display still belongs to slower in comparison with general CRT monitor at present.So when on LCD display fast during playing animation, the phenomenon that just has ghost occurs.Just, the speed that image data sends LCD display to is also faster than the reaction time of LCD display, and makes the reaction of the liquid crystal in the LCD display to catch up with.In order to address this problem, part manufacturer just develops so-called overload type of drive and drives LCD display.
For example, within preset time, reach 5 volts of pairing anglecs of rotation, often need to increase the data voltage value that applies in order to make liquid crystal.Because the data voltage that applies is big more, the rotational speed of liquid crystal molecule is also fast more.For instance, when wishing that liquid crystal reaches 5 volts of pairing anglec of rotation θ 1 within preset time T, just apply a bigger data voltage and give liquid crystal molecule, for example 6 volts.At this moment, in time T,, can when time T, rotate to 5 volts of pairing anglec of rotation θ 1 though liquid crystal molecule can't rotate to 6 volts of pairing anglec of rotation θ 2 of data voltage (θ 2＞θ 1).Also say so,, just can reach the anglec of rotation that applies 5 volts the desired liquid crystal molecule of data voltage originally in time T when applying 6 volts bigger data voltage.This conception of species and so-called overload type of drive.
In the above-mentioned overload type of drive of utilization, must be calculated needed overload driving voltage according to the data of previous frame (frame).For example, when preceding state is when corresponding to 0 volt data voltage, if next state wishes just can apply higher data voltage and give liquid crystal molecule, for example 6 volts when being 5 volts state.When preceding state is when corresponding to 5 volts data voltage,, just can executes identical data voltage and give liquid crystal molecule, promptly 5 volts if when next state wishes still to be maintained 5 volts state.In addition, when preceding state is when corresponding to the data voltage of 3V, if next state wishes just can apply too high data voltage and give liquid crystal molecule, for example 5.5 volts when being 5 volts state.
Therefore, the size that applies data voltage depends on the state of previous frame and wants data presented at present.For the data of recording storage previous state, just need a large amount of internal memories to come as frame buffer (frame buffer), in order to the data of storage frame.
Fig. 1 illustrates has the block schematic diagram that overload drives function in the known displays.Shown in Figure 1, it has a computer terminal 10 and a display end 20.Display end 20 can be a LCD display, and computer terminal 10 is then controlled by operating system 18.Computer terminal 10 can be linked up through DID display interface device and display end 20.See through operating system and can be sent to DID display interface device to data to display, be sent to display end 20 again and show.DID display interface device generally can comprise VGA BIOS 12, VGA chip 14 and video memory (video RAM, VRAM) 16.
The image data signal that 14 outputs of VGA chip are wanted to show is resent to time schedule controller 22 to display end 20 through signal converter 21.Time schedule controller 22 can read the data of the previous state of frame according to frame buffer 23 at this moment, also reads suitable overload driving data from the table of comparisons 24 simultaneously.Then, be sent to driver 25, by driving liquid crystal panel 26 with this outputting data signals that transships driving data and time schedule controller.
Though above-mentioned known system can reach the purpose that overload drives LCD display, yet can make the framework of display end 20 become problem big and that cost increases.At first,,, RGB (RGB) three looks and 6 s' demonstration is arranged if resolution is 1024 * 768 with frame buffer 23, just each frame needs 1024 * 768 * 3 * 6 at least, i.e. the size of about 1.73MB.In other words, need preparing at least at display end 20, the internal memory of 1.73MB capacity comes the storage frame data.In addition, also to need capacity at least be that the ROM of 64 * 64 * 3 bytes stores the overload magnitude of voltage to the table of comparisons 24.Therefore, this all can cause the increase of cost and size.
In addition, because the communication between frame buffer 23 and the time schedule controller 22 needs a lot of pins that use more, this can make needs the control needed pins when linking up that increase between many and the frame buffer more when the design time schedule controller.These additional pin all can make the size of time schedule controller 22 increase.
Summary of the invention
Therefore, in order to solve the shortcoming of above-mentioned known technology, the present invention proposes a kind of overload drive system and overload driving method of display, and it is arranged on computer terminal with frame buffer, makes the display end needn't dispose extra internal memory.
The present invention proposes a kind of overload drive system and overload driving method of display, it is arranged on computer terminal with frame buffer, and the overload voltage table of comparisons can optionally be configured in computer terminal or display end, so can reduce the complexity of integral display, and can reduce the cost of display.
In order to reach above-mentioned and other purpose, according to a preferred embodiment of the present invention, the present invention proposes a kind of overload drive system of display, has following device and constitutes.One main frame, for example general personal computer has the display card interface, in order to be connected with display.Wherein have display card chip and video memory at least on the display card interface, be coupled to each other together.Frame buffer is partitioned into a part as frame buffer in order to store the previous state data of a desire video data from video memory.Display equipment has drive unit and is couple to panel, and wherein drive unit comprises that at least signal converter is coupled to the display card chip, time schedule controller is coupled to signal converter, and is coupled to time schedule controller and panel with driver.The overload voltage table of comparisons then is couple to the display card chip, in order to the contrast between overload driving voltage and the former frame status data to be provided.Whereby, the display card chip is according to the previous state data that read from frame buffer, by obtaining corresponding overload driving voltage in the overload voltage table of comparisons, and will transship driving voltage and be sent to display equipment with the desire video data, makes it to be shown on the panel.
The above-mentioned overload voltage table of comparisons can be configured in the display equipment or be configured in the main frame.In addition, the overload voltage table of comparisons can be that ROM (read-only memory) (ROM), Electrically Erasable Read Only Memory (EEPROM) or other memory device with similar functions constitute.
In addition, according to another preferred embodiment of the present invention, the present invention also proposes a kind of overload drive system of display, has following device and constitutes.One main frame, for example general personal computer has the display card interface, and it is in order to be connected with display.Wherein have display card chip and video memory at least on the display card interface, be coupled to each other together.Frame buffer is partitioned into a part as frame buffer in order to store the previous state data of a desire video data from video memory.Display equipment has drive unit and is couple to panel, and wherein drive unit comprises that at least signal converter is coupled to the display card chip, time schedule controller is coupled to signal converter, and is coupled to time schedule controller and panel with driver.External hanging device is configured in the main frame, and is couple to the display card chip, in order to provide a plug-in program to the display card chip.Plug-in program drives function in order to overload to be provided.Whereby, the display card chip is obtained corresponding overload driving voltage according to the previous state data that read from frame buffer by plug-in program, and will transship driving voltage and be sent to display equipment with the desire video data, makes it to be shown on the panel.
Moreover according to another preferred embodiment of the present invention, the present invention also proposes a kind of overload driving method of display, in order to be shown on the LCD desiring video data on the main frame.Above-mentioned main frame has the display adapter, and primary memory.The wherein part of primary memory is used for as one frame buffer.At first, start the overload voltage table of comparisons.Then, from frame buffer, read the former frame status data.According to former frame status data and present data to display, read the overload driving data from the overload voltage table of comparisons.At last, the driving data of will transshipping is sent to display, desires video data to show.
The above-mentioned overload voltage table of comparisons can be configured in LCD end or host side.The overload voltage table of comparisons can be obtained from plug-in program.
By above-mentioned formation, frame buffer of the present invention is arranged on computer terminal, makes the display end needn't use extra internal memory, makes time schedule controller to link up with internal memory, so can reduce the complexity of time schedule controller.In addition, the overload voltage table of comparisons can optionally be configured in computer terminal or display end, so can reduce the complexity of integral display, and can reduce the cost of display.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. elaborate.
Description of drawings
Fig. 1 illustrates has the block schematic diagram that overload drives function in the known displays;
The display overload drive system synoptic diagram that Fig. 2 is illustrated according to first enforcement of the present invention;
The display overload drive system block schematic diagram that Fig. 3 is illustrated according to second enforcement of the present invention;
The block schematic diagram of the display overload drive system synoptic diagram that the 3rd enforcement of the present invention of Fig. 4 foundation is illustrated;
Fig. 5 is according to the display overload schematic flow sheet that driving method illustrated of the present invention.Label declaration:
10: computer terminal 12:VGA BIOS
14:VGA chip 16:VRAM
18: operating system 20: the display end
21: signal converter 22: time schedule controller
23: frame buffer 24: the overload voltage table of comparisons
25: driver 26: panel
100: computer terminal 102:VGABIOS
104:VGA chip 106:VRAM
110: operating system 120: the display end
122: signal converter 126: time schedule controller
108/109: frame buffer 128: driver
124/124a: the overload voltage table of comparisons
170: primary memory 130: panel
180: plug-in program 134,138: wiring
Embodiment
Spirit of the present invention is the frame buffer of operated by rotary motion at the display end moved on in the device of non-display end, a main frame (host) for example, and the overload voltage table of comparisons (overdrivetable) then can be looked the actual design demand and be designed.Whereby, simplified the complexity of display end, the time schedule controller of display also is able to miniaturization, and cost also can reduce.In order to realize this purpose, below be illustrated especially exemplified by several embodiment.Be noted that those embodiment are only as the usefulness of explanation, and are non-in order to limit the scope of the invention.
Fig. 2 is according to display overload drive system synoptic diagram that the first embodiment of the present invention illustrated.As shown in Figure 2, it has a computer terminal 100 and a display end 120.Display end 120 can be a LCD display, and computer terminal 100 is then controlled by operating system 110.Computer terminal 100 can be linked up through DID display interface device and display end 120.See through operating system and can be sent to DID display interface device to data to display, show being sent to display end 120.DID display interface device generally can comprise VGA BIOS102, VGA chip 104 and video memory (video RAM, VRAM) 106.
In this embodiment, frame buffer 108 is arranged in the video memory (VRAM) 106 of the display card interface in the computer terminal 100.Because the fast development of display card technology at present, and in response to the needs of multimedia technology and application, the capacity of the video memory on the display card interface (VRAM) 106 is all quite big, for example 64MB or higher.Secondly, the size of general frame buffer is about 1.7～3.9MB, this with the size of video memory (VRAM) 106 by contrast and seldom, and in general video memory can't all use.Therefore, the part of video memory can be used for as frame buffer 108.Video memory (VRAM) 106 is cooked up a part as frame buffer 108 on the display card of the present invention just in computer terminal 100, makes it to have overload and drives function.
This kind way has following advantage.At first, display card chip 104 for example is the VGA chip, and the signal transmission between the video memory (VRAM) 106, control all exist with linking up, and does not therefore need extra pin position to design or design in addition extra control module.After computer terminal 100 1 starts, at display card BIOS 102, for example be VGA BIOS, when carrying out initialization action, just can plan the function of video memory (VRAM) 106, promptly drive frame buffer 108, make it to have overload and drive function.Therefore, as long as the display card BIOS 102 on the display card interface of computer terminal 100 carries out the modification of firmware, just can reach the function that makes display card chip 104 and the frame buffer 108 in the video memory 106 go to carry out the overload driving.
As mentioned above, because frame buffer 108 is based upon in the video memory 106 of display card interface, do not come as frame buffer so just do not need to dispose extra internal memory at display end 120.Therefore, display end 120 can save the cost as the internal memory of frame buffer.In addition, because there is no frame buffer,, time schedule controller 126 transmits the pin position with signal so needn't redesigning out extra internal memory control at display end 120.Therefore, the number of pins of time schedule controller 126 be can save, and then complexity, size and the cost of manufacture of time schedule controller 126 reduced.
Secondly, about the overload voltage table of comparisons 124 aspects, in the present embodiment, the overload voltage table of comparisons 124 can be by ROM (read-only memory) (ROM), or Electrically Erasable Read Only Memory (EEPROM) constitutes, its capacity can the firm basis demand be adjusted, and for example is 64 * 64 * 3 bytes.The overload voltage table of comparisons 124 is configured in display end 120.The overload voltage table of comparisons 124 and process wiring 134 are connected to the display card chip 104 of the display card interface of computer terminal 100.In display end 120, except time schedule controller 126 and the overload voltage table of comparisons 124, remaining member and its connected mode and display end 20 shown in Figure 1 are similar.
Then cooperate Fig. 2 that the mode of operation of first embodiment is described.At first, computer terminal 100 is after startup, and the display card interface is initialization thereupon also.When the display card interface initialization, display card BIOS can make frame buffer can begin effect, and has got the live pressure table of comparisons 124 through wiring 134 from display end 120.When computer terminal 100 has data (literal or figure) in the time of will being shown in display end 120, see through operating system 110, computer terminal 100 will data presented be sent to display card chip 104.At this, display card chip 104 is after the frame buffer 108 that is arranged in video memory (VRAM) 106 is obtained the former frame status data, according to former frame status data and present data read overload driving data to display.
Then, display card chip 104 will transship the data that drive and be sent to the signal converter 122 of display end 120 through wiring 138.Time schedule controller 126 just is sent to driver 128 after receiving the overload driving data, drive liquid crystal molecule in the panel 130 with the overload driving voltage, with video data.
As mentioned above, obtaining at computer terminal 100 of driving data of overload carried out, and just carried out by display card chip 104.After obtaining the overload driving data, just directly be sent to display end 120.The time schedule controller 126 of display end 120 just directly removes to drive panel through signal converter 122 after receiving the overload driving data.Therefore, the present invention needn't as known remove to read the former frame state by time schedule controller after, again by time schedule controller reach the overload driving data.
Fig. 3 is according to display overload drive system block schematic diagram that the second embodiment of the present invention illustrated.The variation example of second embodiment, first embodiment is to transship voltage table of comparisons 124a with the difference of first embodiment and is configured in computer terminal 100, and is connected in display card chip 104.As described in preceding first embodiment, overload voltage table of comparisons 124a can be constituted by the ROM (read-only memory) (ROM) of 64 * 64 * 3 bytes etc., or other has the memory device of similar functions, and memory capacity can be stipulated according to actual demand.In addition, overload voltage table of comparisons 124a can be provided by ROM internal memory on the display card or driver (driver).
Basically, the mode of operation of second embodiment and first embodiment is approximate.Display card chip 104 is after the frame buffer 108 that is arranged in video memory (VRAM) 106 is obtained the status data of former frame, according to former frame status data and present data to display, obtain relevant overload driving data at the overload voltage table of comparisons 124a of computer terminal 100.Then, display card chip 104 will transship driving data and be sent to the signal converter 122 of display end 120 through wiring 138, time schedule controller 126 is after receiving the overload driving data, just be sent to driver 128, drive liquid crystal molecule in the panel 130 with the overload driving voltage, with video data.
Because in this embodiment, overload voltage table of comparisons 124a also moves on to computer terminal 100 in the lump with frame buffer 108, so all overloads drive function and all be based upon computer terminal 100, and makes display end 120 all right as long as merely carry out Presentation Function.Therefore, the structure of display end 120 can be simplified, and cost also can more reduce.
In addition, because different displays may need to use different overload voltage, so on the display card interface of computer terminal even can be designed to have the function of identification display id (ID).Thus, after display end 120 was connected to computer terminal 100, computer terminal 100 just can pick out the kind overload voltage table of comparisons corresponding with it of display automatically, carried out suitable overload whereby and drove.
Fig. 4 is according to the block schematic diagram of the display overload drive system synoptic diagram that the third embodiment of the present invention illustrated.The difference of the 3rd and first or second embodiment is that computer terminal 100 or display end 120 all are not provided with the overload voltage table of comparisons, and frame buffer 109 can be based upon on the video memory 106 of display card interface or on the primary memory 170.In the 3rd embodiment, a plug-in program 180 is arranged between operating system 110 and the display card chip 184.Obtaining the overload driving data from plug-in program 180, Shi Ji mode of operation is identical with second embodiment afterwards, is not described in detail in this.
Because in this embodiment, computer terminal 100 or display end 120 all are not provided with the overload voltage table of comparisons, and therefore, the structure of computer terminal 100 or display end 120 can be simplified, and the cost of display end 120 also can reduce.Secondly, as described in second embodiment, different displays need use different overload voltage, so on the display card interface of computer terminal even can be designed to have the function of identification display id (ID).Thus, after display end 120 was connected to computer terminal 100, computer terminal 100 just can pick out the kind of display automatically, and obtained the corresponding overload voltage table of comparisons from plug-in program 180, carried out suitable overload whereby and drove.
Except above-mentioned method, display manufacturer also can develop jointly with operating system provider, makes operating system itself that the function of the overload voltage table of comparisons can be provided.Just when operating system 110 is installed to computer terminal 100, just can set up the corresponding overload voltage table of comparisons.
According to notion proposed by the invention, the present invention also proposes a kind of overload driving method of display.Fig. 5 is according to the display overload schematic flow sheet that driving method illustrated of the present invention.As aforesaid embodiment, this method is applied in frame buffer and is based upon computer terminal.As shown in Figure 5, at first, at step S100, the voltage table of comparisons that will transship starts.This overload voltage table can read from ROM on the display card of the ROM of display end or computer terminal or driver.
Then, at step S102, the status data of former frame is read out.According to method proposed by the invention, read the status data of former frame by frame buffer.By obtaining the status data of former frame, just can be in the hope of suitable overload activation bit.
At step S104,, from the overload voltage table of comparisons, obtain correct overload driving data again according to the status data and the present data to display of the former frame that is read.To this step, obtaining and transshipping the inquiry of driving data and bring in execution by computing machine of former frame state for example carried out by the display card chip on the display card.
At last,, the overload driving data is sent to the time schedule controller and the driver of display end, comes the driving display panel, show desire picture displayed data whereby with this overload driving voltage at step S106.
Therefore, utilize System and method for of the present invention, not only can reach known utilization overload type of drive and drive LCD, can also reduce the complexity and the cost of the driving circuit of display end.
In sum, feature of the present invention is that frame buffer is arranged on computer terminal, makes the display end needn't use extra internal memory, makes time schedule controller to link up with internal memory, so can reduce the complexity of time schedule controller.
Another feature overload voltage table of comparisons of the present invention can optionally be configured in computer terminal or display end, so can reduce the complexity of integral display, and can reduce the cost of display.
A feature more of the present invention is a computer terminal identification Display Types automatically, and obtains correct overload driving data from computer terminal itself.
In sum; though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; anyly be familiar with this technology; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention defines and is as the criterion when looking claim.
Claims (19)
1. the overload drive system of a LCD is characterized in that: comprising:
One main frame has a display card interface, in order to be connected with a display, wherein has a display card chip and a video memory at least on this display card interface, is coupled to each other together;
One frame buffer in order to store the previous state data of a desire video data, is partitioned into a part from this video memory, as this frame buffer;
One display equipment, have a drive unit and be couple to a panel, wherein this drive unit comprises that at least a signal converter is coupled to this display card chip, time schedule controller is coupled to this signal converter and a driver is coupled to this time schedule controller and this panel;
The one overload voltage table of comparisons is couple to this display card chip;
Wherein this display card chip is according to these previous state data that read from this frame buffer, transships driving data by obtaining corresponding one in this overload voltage table of comparisons, and should transship driving data and be sent to this display equipment.
2. the overload drive system of LCD as claimed in claim 1, it is characterized in that: wherein this overload voltage table of comparisons is configured in this display equipment.
3. the overload drive system of LCD as claimed in claim 1, it is characterized in that: wherein this overload voltage table of comparisons is configured in this main frame.
4. the overload drive system of LCD as claimed in claim 1, it is characterized in that: wherein this overload voltage table of comparisons is made of ROM (read-only memory) (ROM).
5. the overload drive system of LCD as claimed in claim 1, it is characterized in that: wherein this overload voltage table of comparisons is made of Electrically Erasable Read Only Memory (EEPROM).
6. the overload drive system of LCD as claimed in claim 2, it is characterized in that: wherein this time schedule controller is coupled to this display card chip through one first wiring, and this overload voltage table of comparisons is coupled to this display card chip through one second wiring.
7. the overload drive system of LCD as claimed in claim 1, it is characterized in that: this display equipment is a LCD.
8. the overload drive system of LCD as claimed in claim 1, it is characterized in that: this display card chip can be detected the identification code of this display equipment.
9. the overload drive system of a LCD is characterized in that: comprising:
One main frame has a display card interface, in order to be connected with a display, wherein has a display card chip and a video memory at least on this display card interface, is coupled to each other together;
One frame buffer is positioned on this main frame, in order to store the previous state data of a desire video data;
One display equipment, have a drive unit and be couple to a panel, wherein this drive unit comprises that at least a signal converter is coupled to this display card chip, time schedule controller is coupled to this signal converter and a driver is coupled to this time schedule controller and this panel;
One external hanging device is configured in this main frame, and is couple to this display card chip, and in order to provide a plug-in program to this display card chip, this plug-in program drives function in order to an overload to be provided;
Wherein this display card chip is obtained a corresponding overload driving data according to these previous state data that read from this frame buffer by this plug-in program, and should transship driving data and be sent to this display equipment.
10. the overload drive system of LCD as claimed in claim 9, it is characterized in that: this display equipment is a LCD.
11. the overload drive system of LCD as claimed in claim 9 is characterized in that: wherein this display card chip can be detected the identification code of this display equipment.
12. the overload drive system of LCD as claimed in claim 9 is characterized in that: wherein this frame buffer is partitioned into part formation from this video memory.
13. the overload drive system of LCD as claimed in claim 9 is characterized in that: wherein this main frame also comprises a primary memory, and this frame buffer is partitioned into a part from this primary memory and constitutes.
14. the overload driving method of a LCD, in order to be presented on the LCD with desiring video data on the main frame, it is characterized in that: wherein this main frame has a display adapter, this display adapter has a video memory, and this main frame is provided with one frame buffer, and the overload driving method of this LCD comprises:
Start an overload voltage table of comparisons;
Read the former frame status data, wherein this former frame status data is stored in this frame buffer;
According to this former frame status data, read an overload driving data from this overload voltage table of comparisons;
Transmit this overload driving data to this display, and drive this display, to show this desire video data with this overload driving data.
15. the overload driving method of LCD as claimed in claim 14 is characterized in that: wherein this overload voltage table of comparisons is obtained from this LCD end.
16. the overload driving method of LCD as claimed in claim 14 is characterized in that: wherein this overload voltage table of comparisons is obtained from this host side.
17. the overload driving method of LCD as claimed in claim 14 is characterized in that: wherein this overload voltage table of comparisons is obtained from a plug-in program.
18. the overload driving method of LCD as claimed in claim 14 is characterized in that: wherein this frame buffer is partitioned into part formation from this video memory.
19. the overload driving method of LCD as claimed in claim 14 is characterized in that: wherein this main frame also comprises a primary memory, this frame buffer is partitioned into a part from this primary memory and constitutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011448733A CN100350448C (en) | 2001-12-27 | 2001-12-27 | Overload drive system of liquid crystal display and its method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011448733A CN100350448C (en) | 2001-12-27 | 2001-12-27 | Overload drive system of liquid crystal display and its method |
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| CN1428755A true CN1428755A (en) | 2003-07-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369105C (en) * | 2006-07-05 | 2008-02-13 | 友达光电股份有限公司 | Time schedule controller for controlling pixel level multi-task display panel |
| CN100437243C (en) * | 2005-05-11 | 2008-11-26 | 三星电子株式会社 | Liquid crystal display |
| CN100446081C (en) * | 2006-06-07 | 2008-12-24 | 友达光电股份有限公司 | Liquid crystal panel and its time schedule controller and over-driving parameter generation method |
| CN101187739B (en) * | 2006-11-22 | 2010-04-21 | 乐金显示有限公司 | Liquid crystal display device and method of driving the same |
| CN1787062B (en) * | 2004-12-11 | 2010-05-12 | 三星电子株式会社 | Method of driving a display device, display controller and display device |
| CN1897099B (en) * | 2005-07-13 | 2010-08-18 | 三星电子株式会社 | Display apparatus and information processing system |
| US8723778B2 (en) | 2004-10-04 | 2014-05-13 | Nxp B.V. | Overdrive technique for display drivers |
| WO2022078382A1 (en) * | 2020-10-14 | 2022-04-21 | 晶晨半导体(上海)股份有限公司 | Display drive method, module and chip, electronic device and storage medium |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US594939A (en) * | 1897-12-07 | Bicycle | ||
| US5483634A (en) * | 1992-05-19 | 1996-01-09 | Canon Kabushiki Kaisha | Display control apparatus and method utilizing first and second image planes |
| JPH08505255A (en) * | 1993-10-29 | 1996-06-04 | サン・マイクロシステムズ・インコーポレーテッド | Frame buffer system for window operation |
| US5668992A (en) * | 1994-08-01 | 1997-09-16 | International Business Machines Corporation | Self-configuring computer system |
| JPH10509291A (en) * | 1994-11-10 | 1998-09-08 | ブルックトリー コーポレーション | Apparatus and method for generating video in a computer system |
| KR19980022263A (en) * | 1996-09-20 | 1998-07-06 | 김광호 | How to use video memory as system memory |
| US5907330A (en) * | 1996-12-18 | 1999-05-25 | Intel Corporation | Reducing power consumption and bus bandwidth requirements in cellular phones and PDAS by using a compressed display cache |
| JPH10302054A (en) * | 1997-04-24 | 1998-11-13 | Mitsubishi Electric Corp | Frame buffer memory |
| US6020901A (en) * | 1997-06-30 | 2000-02-01 | Sun Microsystems, Inc. | Fast frame buffer system architecture for video display system |
-
2001
- 2001-12-27 CN CNB011448733A patent/CN100350448C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8723778B2 (en) | 2004-10-04 | 2014-05-13 | Nxp B.V. | Overdrive technique for display drivers |
| CN1787062B (en) * | 2004-12-11 | 2010-05-12 | 三星电子株式会社 | Method of driving a display device, display controller and display device |
| CN100437243C (en) * | 2005-05-11 | 2008-11-26 | 三星电子株式会社 | Liquid crystal display |
| CN1897099B (en) * | 2005-07-13 | 2010-08-18 | 三星电子株式会社 | Display apparatus and information processing system |
| CN100446081C (en) * | 2006-06-07 | 2008-12-24 | 友达光电股份有限公司 | Liquid crystal panel and its time schedule controller and over-driving parameter generation method |
| CN100369105C (en) * | 2006-07-05 | 2008-02-13 | 友达光电股份有限公司 | Time schedule controller for controlling pixel level multi-task display panel |
| CN101187739B (en) * | 2006-11-22 | 2010-04-21 | 乐金显示有限公司 | Liquid crystal display device and method of driving the same |
| WO2022078382A1 (en) * | 2020-10-14 | 2022-04-21 | 晶晨半导体(上海)股份有限公司 | Display drive method, module and chip, electronic device and storage medium |
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| CN100350448C (en) | 2007-11-21 |
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