CN100363976C - Time sequence control method and device and its applied liquid crystal display - Google Patents
Time sequence control method and device and its applied liquid crystal display Download PDFInfo
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- CN100363976C CN100363976C CNB2005101201206A CN200510120120A CN100363976C CN 100363976 C CN100363976 C CN 100363976C CN B2005101201206 A CNB2005101201206 A CN B2005101201206A CN 200510120120 A CN200510120120 A CN 200510120120A CN 100363976 C CN100363976 C CN 100363976C
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Abstract
The present invention provides a sequence control method of a liquid crystal display and a device thereof. The device comprises a mode selection unit, a video signal unit and a logic operation unit, wherein the mode selection unit is used for storing sequence parameter data of the resolution of the liquid crystal display, and the stored sequence parameter data can be updated; the video signal unit outputs a video signal; a logic operation unit is used for receiving the video signal and obtaining corresponding sequence parameter data from the mode selection unit according to the video signal, and a control signal is output according to the parameter data.
Description
Technical field
The present invention relates to a kind of LCD, particularly relate to a kind of LCD that can upgrade to the resolution that the specification of dispatching from the factory do not support easily.
Background technology
Generally speaking the incoming video signal that LCD received is divided into two groups of signals: picture element signal and synchronizing signal.Wherein picture element signal comprises the value of redness, green and the blue composition of each pixel that shows on the LCDs; And synchronizing signal comprises horizontal synchronization and two signals of vertical synchronization.
The composition density of a picture is called resolution, and how many pixels picture of its expression contains.The account form of resolution is typically expressed as (the horizontal display pixel number of picture) * (the vertical display pixel number of picture), and for example a picture level can show 1024 pixels, vertically can show 768 pixels, and its resolution then is 1024*768.
The video data of single picture is transmitted as by picture upper left to the bottom right.The pixel constituent data of pixel is begun to transmit by upper left the 1st data, and the pixel data of sending same level is to the right in regular turn sent the 1st pixel data of Far Left of next level subsequently until any data of rightmost.When the first stroke pixel data of each level is sent, horizontal-drive signal send simultaneously with the notice LCD thus a pixel data begin pixel data for next level.Mode finishes when the pixel data of whole image transmits according to this, and the most upper left the first stroke data of next picture are and then sent.When the most upper left the first stroke data of each picture are sent, vertical synchronizing signal send simultaneously with the notice LCD thus a pixel data begin pixel data for next picture.
Fig. 1 is the calcspar of conventional liquid crystal 10 functions.This LCD 10 includes time sequence control device 11, drive unit 12 and display panel 13.
Time sequence control device 11, it comprises a video signal unit 111, is the vision signal that sends this LCD 10 in order to reception to; One driving data delivery unit 112, it exports the required driving data of a drive unit 12; One level and vertical clock signal generation unit 113, it exports this drive unit 12 required level and vertical clock signal; And one sequential produce and DCU data control unit 114.
There is the resolution parameter tables of data of imbedding when making timing sequence generating and DCU data control unit 114 inside,
Its record various default resolution in requisition for time sequence parameter.Timing sequence generating and DCU data control unit 114 are the vision signals that transmitted by this video signal unit 111 in order to receive, and utilize cycle of vertical synchronizing signal in this vision signal and horizontal-drive signal to learn the resolution of vision signal.Timing sequence generating and DCU data control unit 114 are according to this resolution value, by finding out the time series data that this resolution is suitable in this time sequence parameter, this vision signal is utilized this time series data that is suitable for processing and is converted to driving data, and export this driving data to this driving data delivery unit 112.In addition, this timing sequence generating and DCU data control unit 114 are also utilized this time series data that is suitable for that this vision signal is handled simultaneously and are converted to level and vertical time series data, export this level and vertical time series data to this level and vertical clock signal generation unit 113 again.
Existing time sequence control device is just inserted the time sequence parameter of all resolution correspondences of supporting of plan in design and when making, so LCD can't be handled the not vision signal of the resolution of plan support.When the vision signal of the resolution that occurs a kind of new spec on the market, just the vision signal that new time sequence control device just can be handled the resolution of this new spec is made in the design that must will change time sequence control device.
In addition, existing time sequence control device is only handled the sequential partial function that video signal data is converted to drive signal and clock signal.Though the colouring information of video signal data is also sent in the time sequence control device simultaneously, because the requirement for each picture color has great variation according to different environment and different users, with the design of present time sequence control device, and can't satisfy the requirement of color treatments by easy mode.Processing mode now all with after picture data is passed through the software or the calculating of display card, is delivered to LCD after the color change decision that will be required again.
Summary of the invention
The invention provides the time sequence control device of a LCD, it comprises a mode selecting unit, this mode selecting unit comprises an internal memory and a memory control unit, in order to the time sequence parameter data of storage LCD resolution, its time sequence parameter data of storing can read the external parameter data by this memory control unit and upgrade.Time sequence control device further comprises a video signal unit, in order to receiving video data and export a vision signal and give an arithmetic logic unit.This arithmetic logic unit receives this vision signal and according to the resolution character of this vision signal, obtains corresponding time sequence parameter data in mode selecting unit, exports a control signal according to these time sequence parameter data.
The present invention further provides a LCD.The drive unit that this LCD comprises a display panel and drives this display panel.This LCD comprises a sequential control device in addition.This time sequence control device comprises: a mode selecting unit, comprise an internal memory and a memory control unit, in order to the supplemental characteristic of storage LCD resolution, its stored parameters data can read the external parameter data by this memory control unit and upgrade; One video signal unit is output one vision signal; One arithmetic logic unit is to receive this vision signal and obtain corresponding time sequence parameter data according to the resolution character of this vision signal in mode selecting unit, exports a control signal according to these time sequence parameter data and gives this drive unit.
The present invention more provides the sequential control method of a LCD, comprise: a mode selecting unit is provided, comprise an internal memory and a memory control unit, in order to the time sequence parameter data of storage LCD resolution, its time sequence parameter data of storing can read the external parameter data by this memory control unit and upgrade; Receive a vision signal, and in mode selecting unit, obtain the corresponding parameters data according to the resolution character of this vision signal; Export a control signal according to this supplemental characteristic.
Description of drawings
Fig. 1 is the calcspar of conventional liquid crystal.
Fig. 2 A and 2B are according to the calcspar according to one embodiment of the invention LCD.
The reference numeral explanation:
11,21-time sequence control device
12,22-drive unit
13,23-display panel
111,211-video signal unit
112,212-driving data delivery unit
113,213-level and vertical signal generation unit
114-timing sequence generating and DCU data control unit
The 214-arithmetic logic unit
The 215-mode selecting unit
The 2151-memory control unit
The 2152-internal memory
24-external control device
Embodiment
Fig. 2 A and 2B are according to the calcspar according to one embodiment of the invention LCD 20.This LCD 20 comprises time sequence control device 21, drive unit 22 and display panel 23.
This time sequence control device 21, it comprises a video signal unit 211, its reception sends the vision signal of this LCD to; One driving data delivery unit 212, it exports the required driving data of a drive unit 22, and by this driving data to drive this display panel 23 display frames; One level and vertical clock signal generation unit 213, it exports this drive unit 22 required level and vertical clock signal; One arithmetic logic unit 214; One mode selecting unit 215 provides the required time sequence parameter data of resolution of different mode.
In addition, arithmetic logic unit 214 is utilized this group time sequence parameter simultaneously, and handling and change this vision signal is a control signal.This control signal comprises driving data and level and vertical time series data, and wherein, this driving data exports this driving data delivery unit 212 to, and this level and vertical time series data then export this level and vertical clock signal generation unit 213 to.
In addition, shown in Fig. 2 A, this mode selecting unit 215 can comprise an internal memory 2152, and this internal memory 2152 can be the erasable ROM (read-only memory) of electronic type, and in order to store many group time sequence parameter data.Shown in Fig. 2 B, this mode selecting unit 215 can comprise memory control unit 2151 and be connected to an external control device 24 in addition.This external control device 24 can be the erasable ROM (read-only memory) of an electronic type, the many groups of its storage time sequence parameter data.Mode selecting unit 215 reads the resolution parameter data of storage in the external control device 24 by memory control unit 2151.
In sum, utilize provided by the invention time sequence parameter to be arranged on the internal memory of a sequential control device inside or the framework of external control device, make this time sequence control device can obtain from the outside and the corresponding time sequence parameter of the resolution of vision signal.Even there will be future a new resolution to be formulated out, also can make this time sequence control device can handle the video signal data of this new resolution by upgrading the data in this internal memory or the external control device.So can save upgrade cost, improve competitiveness of product.
In addition, utilize this framework, the present invention can make time sequence control device that other application is arranged again.
In another preferred embodiment of the present invention, the arithmetic logic unit 214 among Fig. 2 A and the 2B contains the pixel color translation function in addition.Mode selecting unit 215 is further in order to storage color reflection (mapping) table.This color mapping table is the color data that vision signal is sent each pixel data that comes to, is the requirement of the person's of being used demand and environment for use, need be at the required conversion parameter of corresponding color of this LCD performance.For example, the former notebook data of certain some pixel is A
i=(R
i, G
i, B
i), wherein i is a location of pixels, the data that the requirement of the person's of being used demand and environment for use be should collect in the driving integrated circuit of this LCD are required to be B
i=(R
i', G
i', B
i'), then arithmetic logic unit 214 will be carried out B
i=(A
i) calculating, in the external control device 24 then the storage (A
i) required parameter in the calculating.So in this LCD, then can reach relevant adjustment such as the color of improving color, colour temperature adjustment, an ancient woman's ornament agate (Gamma) adjustment.
In another preferred embodiment of the present invention, the arithmetic logic unit 214 among Fig. 2 A and the 2B contains picture in addition and improves function.For example that each position is close pixel maintains a certain Aj=[
1(A
i), f
2(A
i)] relation extents in, i wherein, j is a location of pixels.Any value that exceeds this scope all may must be adjusted back value in this scope for noise.Then arithmetic logic unit 214 will be carried out f
1(A
i) and f
2(A
i) calculating, and mode selecting unit 215 further in order to the storage
1(A
i) and f
2(A
i) required parameter in the calculating.So in this LCD, then can reach relevant adjustment such as eliminating noise or picture adjustment.
In another preferred embodiment of the present invention, the arithmetic logic unit 214 among Fig. 2 A and the 2B contains the circuit security function in addition.Mode selecting unit 215 is further in order to store the check code data after encoded.Check code data in the arithmetic logic unit 214 read mode selected cells 215 behind the coding are authorized through proper with the use of judging this device.If arithmetic logic unit 214 can't obtain the check code data behind the correct coding, then can limit the function of LCD 20, can guarantee that so the circuit of circuit designers is not abused by unauthorized theft.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (16)
1. a time sequence control device is applicable on the LCD, comprising:
One mode selecting unit comprises an internal memory and a memory control unit, and in order to the time sequence parameter data of storage LCD resolution, its time sequence parameter data of storing can read the external parameter data by this memory control unit and upgrade;
One video signal unit is output one vision signal; And
One arithmetic logic unit is to receive this vision signal and obtain corresponding time sequence parameter data according to the resolution character of this vision signal in mode selecting unit, exports a control signal according to these time sequence parameter data.
2. time sequence control device as claimed in claim 1, wherein, this memory control unit is coupled to an external control device.
3. time sequence control device as claimed in claim 1 more comprises:
One driving data delivery unit is to receive this control signal, and exports a drive signal according to this control signal; And
One level and vertical clock signal generation unit are to receive this control signal, and export a level and vertical clock signal according to this control signal.
4. time sequence control device as claimed in claim 3, wherein, this control signal comprises a driving data and a level and vertical time series data.
5. time sequence control device as claimed in claim 1, wherein, this mode selecting unit is further in order to storage color conversion parameter; This arithmetic logic unit further reads this color conversion parameter and exports this control signal according to this color conversion parameter.
6. time sequence control device as claimed in claim 1, wherein, this mode selecting unit is further improved parameter in order to stored picture;
This arithmetic logic unit further reads this picture and improves parameter and improve parameter according to this picture and export this control signal.
7. time sequence control device as claimed in claim 1, wherein, this mode selecting unit is further checked data parameters in order to storage;
This arithmetic logic unit further reads this inspection data parameters and limit the function of this LCD when this inspection data parameters error in data.
8. LCD comprises:
One display panel;
One drive unit drives this display panel; And
One sequential control device,
Wherein, this time sequence control device comprises:
One mode selecting unit comprises an internal memory and a memory control unit, and in order to the time sequence parameter data of LCD resolution to be provided, its time sequence parameter data of storing can read the external parameter data by this memory control unit and upgrade;
One video signal unit is output one vision signal; And
One arithmetic logic unit is to receive this vision signal and obtain corresponding time sequence parameter data according to the resolution character of this vision signal in mode selecting unit, exports a control signal according to these time sequence parameter data and gives this drive unit.
9. LCD as claimed in claim 8, wherein, this memory control unit is coupled to an external control device.
10. LCD as claimed in claim 8, wherein, this time sequence control device more comprises:
One driving data delivery unit is to receive this control signal, and exports a drive signal according to this control signal; And
One level and vertical clock signal generation unit are to receive this control signal, and export a level and vertical clock signal according to this control signal.
11. LCD as claimed in claim 10, wherein, this control signal comprises a driving data and a level and vertical time series data.
12. LCD as claimed in claim 8, wherein, this mode selecting unit is further in order to storage color conversion parameter; This arithmetic logic unit further reads this color conversion parameter and exports this control signal according to this color conversion parameter.
13. LCD as claimed in claim 8, wherein, this mode selecting unit is further improved parameter in order to stored picture;
This arithmetic logic unit further reads this picture and improves parameter and improve parameter according to this picture and export this control signal.
14. LCD as claimed in claim 8, wherein, this mode selecting unit is further checked data parameters in order to storage;
This arithmetic logic unit further reads this inspection data parameters and limit the function of this LCD when this inspection data parameters error in data.
15. a sequential control method is applicable to comprise on the LCD:
One mode selecting unit is provided, comprises an internal memory and a memory control unit, in order to the time sequence parameter data of storage LCD resolution, its time sequence parameter data of storing can read the external parameter data by this memory control unit and upgrade;
Receive a vision signal, and in mode selecting unit, obtain corresponding time sequence parameter data according to the resolution character of this vision signal;
Export a control signal according to these time sequence parameter data.
16. sequential control method as claimed in claim 15 more comprises:
Export a drive signal according to this control signal;
Export a level and vertical clock signal according to this control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101201206A CN100363976C (en) | 2005-11-04 | 2005-11-04 | Time sequence control method and device and its applied liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101201206A CN100363976C (en) | 2005-11-04 | 2005-11-04 | Time sequence control method and device and its applied liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1753076A CN1753076A (en) | 2006-03-29 |
| CN100363976C true CN100363976C (en) | 2008-01-23 |
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Families Citing this family (5)
| 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 |
| CN102855838B (en) * | 2011-06-30 | 2015-07-08 | 上海天马微电子有限公司 | Time schedule controller for display |
| CN105955686A (en) * | 2016-04-27 | 2016-09-21 | 乐视控股（北京）有限公司 | Resolution switching method of Android device, and Android device |
| CN106686332B (en) * | 2016-11-17 | 2020-07-14 | 西安诺瓦星云科技股份有限公司 | Video display control method and EDID management method |
| WO2022226835A1 (en) * | 2021-04-28 | 2022-11-03 | 京东方科技集团股份有限公司 | Apparatus and method for processing video data, and display system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05127646A (en) * | 1991-11-07 | 1993-05-25 | Fuji Electric Co Ltd | Display device |
| JPH05127645A (en) * | 1991-11-07 | 1993-05-25 | Fuji Electric Co Ltd | Display device |
| JP2003280628A (en) * | 2002-03-25 | 2003-10-02 | Matsushita Electric Ind Co Ltd | Image display device |
| JP2004138654A (en) * | 2002-10-15 | 2004-05-13 | Sharp Corp | Information processing apparatus which decides resolution, information processing method, program for achieving the information processing method, and recording medium which stores the program |
| CN1632849A (en) * | 2004-12-08 | 2005-06-29 | 南开大学 | Universal panel display controller and control method thereof |
-
2005
- 2005-11-04 CN CNB2005101201206A patent/CN100363976C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05127646A (en) * | 1991-11-07 | 1993-05-25 | Fuji Electric Co Ltd | Display device |
| JPH05127645A (en) * | 1991-11-07 | 1993-05-25 | Fuji Electric Co Ltd | Display device |
| JP2003280628A (en) * | 2002-03-25 | 2003-10-02 | Matsushita Electric Ind Co Ltd | Image display device |
| JP2004138654A (en) * | 2002-10-15 | 2004-05-13 | Sharp Corp | Information processing apparatus which decides resolution, information processing method, program for achieving the information processing method, and recording medium which stores the program |
| CN1632849A (en) * | 2004-12-08 | 2005-06-29 | 南开大学 | Universal panel display controller and control method thereof |
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| CN1753076A (en) | 2006-03-29 |
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