CN101071558A - Image display method - Google Patents
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- CN101071558A CN101071558A CN 200710111479 CN200710111479A CN101071558A CN 101071558 A CN101071558 A CN 101071558A CN 200710111479 CN200710111479 CN 200710111479 CN 200710111479 A CN200710111479 A CN 200710111479A CN 101071558 A CN101071558 A CN 101071558A
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Abstract
The invention is a video displaying method, applied to a computer system comprising a display, and comprising the steps of: reading a first frame from a first frame buffer; utilizing a 3D spatial video processing engine to make a video resolution processing on the first frame to form a second frame; writing the second frame into a second frame buffer; and according to a timing control data corresponding to the display, outputting the second frame to the display for displaying. And the method can use finite timing control data to support multiple display modes to reduce cost of product and improve use flexibility.
Description
Technical field
The present invention is a kind of image display method, refers to be applied to comprise the image display method on the computer system of a display especially.
Background technology
See also Fig. 1 a, it is about drawing chip module function block schematic diagram partly in the computer system, the chip module 11 of wherein drawing is the individual chips mode to exist, also can be incorporated into the north bridge chips (not shown), and drawing chip module 11 mainly is that the picture element point chromatic value that is stored in the frame buffer (Frame Buffer) 10 is read, and exports outside display 12 to and show.And the pixel number of set frame buffer (Frame Buffer) 10 is called as resolution in the computer system, 1024 * 768 for example common pixels or the description of 1280 * 1024 pixels.Identical, common display 12, for example the pixel number on the LCD then is called as exploration on display resolution ratio.
But inner frame buffer (Frame Buffer) 10 might not be just identical with the resolution of external display, if the resolution of frame buffer (Frame Buffer) 10 is less than the resolution of display 12, for example the resolution of frame buffer (Frame Buffer) 10 is 1024 * 768, and the resolution of display 12 is 1280 * 1024.And be the resolution that can cooperate display 12, drawing chip module 11 must according to should frame buffer (Frame Buffer) 10 and one group of sequential (timing) control data of the ratio of display 12 resolution come output data to display 12.And the sequential control data are in order to " initiatively image (active video) " time in the signal of video signal of control shown in Fig. 1 b and blank (blanking) time and horizontal-drive signal (HSync), vertical synchronizing signal (VSync), forward position (Front Porch) time, the back data along sequential relativenesses such as (Back Porch) times.
Vice versa, if the resolution of frame buffer (Frame Buffer) 10 is greater than the resolution of display 12, for example the resolution of frame buffer (Frame Buffer) 10 is 1280 * 1024, and exploration on display resolution ratio is 1024 * 768 o'clock, for cooperating exploration on display resolution ratio, drawing chip module 11 must be organized the sequential control data according to another and come output data to display 12.
And above-mentioned sequential control data are when design drawing chip module 11, and resolution or other demand that the deviser just must corresponding various displays 12 are finely tuned out different sequential control data.As for being to be stored in order to the time-scales (timingtable) that write down many group sequential control data, in order to the demand of the LCD 12 of supporting various different sizes at display interface basic input/output 19 (being called for short VGABIOS).And display interface basic input/output (VGA BIOS) the 19th can the individual chips mode exist, and also can be incorporated among system's basic input/output (System BIOS) (not shown).
Therefore, the group number of data just represent this drawing chip module 11 supported Display Types quantity, and this corresponding relation will cause serious problem on TV shows in the time-scale (timing table).Because the resolution of TV (for example NTSC (NTSC) is 720 * 480) is though comparatively simple, but the TV code translator as shown in Fig. 1 a 13 is if want normal operation, drawing chip module 11 just must provide the image data of suitable resolution to handle to TV code translator 13, and then is fit to the signal that TV 14 shows by 13 outputs of TV code translator.But because of the viewing area size of TV 14 can have a little discrepancy with the specification of manufacturer, cause identical sequential control data and can't satisfy all TV demands, therefore the TV that the deviser of chip module 11 just must corresponding various labels of drawing is finely tuned out different sequential control data, in order to satisfy the televisor of different viewing areas.But the also jumbo thereupon increase of the size that so will make time-scale (timing table), therefore cause the procedure code that leaves display interface basic input/output 19 in excessive, and the elasticity that cost of products rising and shortage are used, therefore how to improve the disappearance of above-mentioned any means known, just become fundamental purpose of the present invention.
Summary of the invention
The present invention is a kind of image display method, is applied to comprise on the computer system of a display, and this method comprises the following step: read one first frame from one first frame buffer; Utilize a three dimensions image processing engine that this first frame is carried out image resolution processing and forms one second frame; This second frame is write in one second frame buffer; And, a sequential control data that should display shows according to being exported this second frame to this display.
Image display method of the present invention, wherein this image resolution is treated to an image resolution processing and amplifying or an image resolution dwindles processing.
Image display method of the present invention, its applied this display is a LCD.
Image display method of the present invention, its applied this display comprises a TV code translator and a TV.
Image display method of the present invention, wherein this first frame buffer is to be the original frame buffer of this computer system, this second frame buffer then can be a texture buffer (Texture Buffer).
Image display method of the present invention, wherein this three dimensions image processing engine is to describe a update signal that timer sends according to one to describe to form this second frame and this second frame is write in this second frame buffer.
Image display method of the present invention defines this second frame buffer in the storage space of image special use.
Image display method of the present invention will show that start address is revised as the start address of this second frame buffer.
Image display method of the present invention if display mode remains unchanged, then continues this first frame is carried out the image resolution processing and forms this second frame, and this second frame is write in this second frame buffer.
Image display method of the present invention, if display mode changes, then the storage space with second frame buffer discharges; And be written into the demonstration start address again.
Image display method of the present invention can utilize limited sequential control data to support plurality of display modes, makes the cost of products reduction and has promoted the elasticity of using.
Description of drawings
Fig. 1 a is about drawing chip module function block schematic diagram partly in the computer system.
Fig. 1 b is the signal timing diagram that general sequential control data define out.
Fig. 2 is that the present invention improves the image display method that shortcoming developed out of any means known to be applied to a function block schematic diagram on the computer system.
Fig. 3 is that the present invention is used for controlling the method flow synoptic diagram that three dimensions image processing engine carries out the image resolution processing.
Embodiment
See also Fig. 2, it is that the present invention improves the image display method that shortcoming developed out of any means known to be applied to a function block schematic diagram on the computer system, it is about drawing chip module function block schematic diagram partly in the computer system 2, the chip module 21 of wherein drawing can exist with the individual chips mode, also can be incorporated into the north bridge chips (not shown), and drawing chip module 21 mainly is that the picture element point chromatic value that is stored in first frame in original first frame buffer (Frame Buffer) 20 of computer system 2 is read, utilizing the three dimensions image processing engine 210 that has in this drawing chip module 21 that this first frame is carried out an image resolution then amplifies/dwindles processing and form one second frame, and then this second frame write in second frame buffer 29 of additionally setting up, export this second frame to display 22 and show according to leaving in the display interface basic input/output 28 a sequential control data corresponding to display 22 in more at last.
For instance, the resolution of the first original frame buffer (Frame Buffer) 20 is 1280 * 1024, and the resolution of display 22 is 1024 * 768, so can being the picture element point chromatic value of 1280 * 1024 first frame with the first original frame buffer (Frame Buffer), 20 intermediate-resolutions, reads drawing chip module 21, utilize the three dimensions image processing engine 210 that has in this drawing chip module 21 that this first frame is carried out an image resolution then and dwindle that to handle and form resolution be 1024 * 768 second frame, and then this second frame write in one second frame buffer 29, export this second frame to display 22 and show according to leaving in the display interface basic input/output 28 these sequential control data corresponding to this display 22 in more at last.
In addition, if the resolution of the first original again frame buffer (Frame Buffer) 20 is 1600 * 1200, and for example the resolution of the display 22 of LCD still is 1024 * 768, the chip module 21 of drawing this moment can be that the picture element point chromatic value of 1600 * 1200 first frame is read with the first original frame buffer (Frame Buffer), 20 intermediate-resolutions, utilize the three dimensions image processing engine 210 that has in this drawing chip module 21 that this first frame is carried out an image resolution then and dwindle that to handle and form resolution be 1024 * 768 second frame, and then this second frame write in one second frame buffer 29, export this second frame to display 22 and show according to leaving in the display interface basic input/output 28 these sequential control data corresponding to this display 22 in more at last.
And from the above, under the prerequisite that does not increase hardware cost, the present invention only utilizes in this drawing chip module 21 the three dimensions image processing engine 210 that originally just has to come that first frame is carried out image resolution to dwindle (or amplification) and handle, it is to utilize the mode of handling texture (Texture) to dwindle (or amplification) to handle, and second frame is after treatment write second frame buffer 29 that can be considered texture buffer (Texture Buffer).Can in the storage space of image special use, define as for second frame buffer 29; and the storage space that provides 21 accesses of drawing chip module to use specially is provided the storage space of image special use; usually can exist in two ways; first kind is self-existent display card built-in storage, and another then is the dynamic shared storage that is defined in the system storage (systemmemory).
More owing to utilize three dimensions image processing engine 210 to carry out image resolution to dwindle (or amplify) and handle and do not need to utilize the sequential control data, but utilize the mode of software control just can finish, therefore the present invention is directed to same display and only need prepare one group of sequential control data and export and can satisfy the demands.
In like manner, for the demonstration demand of TV code translator 23 with TV 24, the present invention only needs to prepare one group of sequential control data at the resolution of TV 24 in display interface basic input/output 28, the resolution 720 * 480 of NTSC (NTSC) regulation for example, therefore no matter the resolution of first frame why, all can carry out image resolution by three dimensions image processing engine 210 handles and does not need with reference to the sequential control data, only need finish at last meet TV code translator 23 and TV 24 required resolution second frame just can, for example resolution is stored second frame in 720 * 480 second frame buffer 29.Even if it is identical but the viewing area size has the TV 24 of a little discrepancy in order to satisfy resolution, second frame that utilizes three dimensions image processing engine 210 to produce the resolution slight variations also needn't store many group sequential control data, just but can be reached the demand in response to the change of TV 24 viewing areas as any means known.
In addition, please merge referring to Fig. 2 and Fig. 3, wherein Fig. 3 is that the present invention is used for controlling the method flow synoptic diagram that three dimensions image processing engine 210 carries out the image resolution processing, at first, step 31 is expressed system provides one to describe timer (render timer), and this is described timer (render timer) and regularly sends one and upgrade (update) signal, step 32 is expressed system and define this second frame buffer 29 again in the storage space of image special use then, then step 33 expression system will show that start address (display startingaddress) makes just to define the start address of this second frame buffer 29 that comes out into from original start address (for example start address of first frame buffer (Frame Buffer) 20), thus, drawing chip module 21 just can be read image and carry out the display operation of rear end from this second frame buffer 29.And the size of this second frame buffer 29 can be the integral multiple of this second frame, for example one times, twice etc.But if second frame buffer 29 just only is the size of second frame, three dimensions image processing engine 210 relatively can't be brought into play top efficiency, and might cause data presentation smooth-going inadequately, so use the impact damper of twice or the above size of twice can allow three dimensions image processing engine 210 give full play to efficient, help the smooth-going degree that picture shows.
And step 34 expression three dimensions image processing engine 210 according to describe timer (render timer) the triggering of this renewal of sending (update) signal, utilize texture (Texture) handling procedure to carry out picture dimension and dwindle (or amplification) processing, and second frame is after treatment write second frame buffer 29 that can be considered texture buffer (Texture Buffer).Thus, the purpose that just can finish the screen resolution adjustment and utilize second frame buffer 29 to show.
Moreover step 35 is expressed if display mode remains unchanged, and then proceeds the action of step 34, if but display mode change, the content shown in then carry out step 36: (1) discharges the storage space of second frame buffer 29; (2) be written into demonstration start address (display starting address) again, whether see through step 37 pair driver then finishes to judge, and do not carry out resetting of second frame buffer 29 when driver finishes just to return step 32, in order to satisfy the demand of user to the different resolution display mode.
Thus, the present invention sees through adjustment and the setting to second frame buffer 29, just can utilize limited sequential control data to support plurality of display modes, can effectively improve any means known disappearance thus really, and then reach fundamental purpose of the present invention.
Though the present invention by the preferred embodiment explanation as above, this preferred embodiment is not in order to limit the present invention.Those skilled in the art without departing from the spirit and scope of the present invention, should have the ability this preferred embodiment is made various changes and replenished, so protection scope of the present invention is as the criterion with the scope of claims.
Being simply described as follows of symbol in the accompanying drawing:
Frame buffer: 10
Drawing chip module: 11
Display: 12
TV decoder: 13
TV: 14
Display interface basic input/output: 19
Computer system: 2
First frame buffer: 20
Drawing chip module: 21
Three dimensions image processing engine: 210
Display: 22
Display interface basic input/output: 28
Second frame buffer: 29
TV code translator: 23
TV: 24.
Claims (10)
1. an image display method is characterized in that, is applied to comprise on the computer system of a display, and this image display method comprises the following step:
From one first frame buffer, read one first frame;
Utilize a three dimensions image processing engine that this first frame is carried out image resolution processing and forms one second frame;
This second frame is write in one second frame buffer; And
According to being exported this second frame to this display, a sequential control data that should display shows.
2. image display method according to claim 1 is characterized in that, this image resolution is treated to an image resolution processing and amplifying or an image resolution dwindles processing.
3. image display method according to claim 1 is characterized in that, its applied this display is a LCD.
4. image display method according to claim 1 is characterized in that, its applied this display comprises a TV code translator and a TV.
5. image display method according to claim 1 is characterized in that, this first frame buffer is to be the original frame buffer of this computer system, and this second frame buffer then can be a texture buffer.
6. image display method according to claim 1, it is characterized in that this three dimensions image processing engine is to describe a update signal that timer sends according to one to describe to form this second frame and this second frame is write in this second frame buffer.
7. image display method according to claim 1 is characterized in that, defines this second frame buffer in the storage space of image special use.
8. image display method according to claim 7 is characterized in that, will show that start address is revised as the start address of this second frame buffer.
9. according to claim 1 or 8 described image display methods, it is characterized in that,, then continue this first frame is carried out the image resolution processing and forms this second frame, and this second frame is write in this second frame buffer if display mode remains unchanged.
10. image display method according to claim 8 is characterized in that, if display mode changes, then the storage space with second frame buffer discharges; And
Again be written into the demonstration start address.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101114796A CN100557685C (en) | 2007-06-25 | 2007-06-25 | Image display method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101114796A CN100557685C (en) | 2007-06-25 | 2007-06-25 | Image display method |
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| Publication Number | Publication Date |
|---|---|
| CN101071558A true CN101071558A (en) | 2007-11-14 |
| CN100557685C CN100557685C (en) | 2009-11-04 |
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| CNB2007101114796A Active CN100557685C (en) | 2007-06-25 | 2007-06-25 | Image display method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109284151A (en) * | 2017-07-19 | 2019-01-29 | 龙芯中科技术有限公司 | Display methods, display device and readable storage medium storing program for executing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7239355B2 (en) * | 2004-05-17 | 2007-07-03 | Mstar Semiconductor, Inc. | Method of frame synchronization when scaling video and video scaling apparatus thereof |
| US20070122045A1 (en) * | 2005-11-29 | 2007-05-31 | Jiun-Yuan Wu | System for scaling a picture unit from a first video resolution format to a second video resolution format |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109284151A (en) * | 2017-07-19 | 2019-01-29 | 龙芯中科技术有限公司 | Display methods, display device and readable storage medium storing program for executing |
| CN109284151B (en) * | 2017-07-19 | 2022-06-07 | 龙芯中科技术股份有限公司 | Display method, display device and readable storage medium |
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| Publication number | Publication date |
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| CN100557685C (en) | 2009-11-04 |
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