JP2004191745A - Image display method, computer, and display driver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a computer image display method, a computer, and a display driver, wherein different-resolution images are displayed on the same screen of a high-definition display. <P>SOLUTION: A standard display driver secure a 1st memory area in the memory space of an image memory to write image information to be displayed with specified resolution on the entire display screen of the high-definition display. When an image display area displayed with high-definition resolution different from the specified resolution is specified, a 2nd memory area corresponding to the image display area in the 1st memory area is set and a display driver for high-definition resolution secures a 3rd memory area in the memory space of the image memory to write image information to be displayed in the image display area with high-definition resolution to display the image information to be displayed on the high-definition display by writing it in the 1st memory excluding the 2nd memory area and the 3rd memory area. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a computer that outputs image information stored in a memory to a display capable of high definition display, a display driver, and an image display method.
[0002]
[Prior art]
At present, a display for a computer supports various display resolutions, and it is possible for a user to set one resolution according to visibility and operability.
[0003]
In general, when using application software such as a word processor or a spreadsheet, a relatively low resolution, for example, a resolution of about XGA (1024 dots × 768 dots), has good visibility and operability for the user. In graphic application software that handles digital photographs and the like, a high resolution, for example, a high resolution of about QXGA (2048 dots × 1536 dots) provides good visibility and operability to the user.
[0004]
In such a situation, there is a display that can achieve both high-definition image display and high-speed moving image display on one screen (for example, Patent Document 1). Utilizing the difference in visibility between still image display and moving image display, it is possible to reduce the definition of moving images and freely select the area where high-speed rewriting is displayed and the area where high-definition still images are displayed with high rewriting. It is possible to switch to.
[0005]
[Patent Document 1]
JP 2001-350453 A
[Problems to be solved by the invention]
By the way, if a display capable of high-definition display simultaneously displays application software for which low-resolution display is desirable and application software for which high-resolution display is desirable, visibility and operability are extremely poor for the user.
[0007]
For example, when the display mode of the display is set to the resolution of QXGA, if application software such as a word processor is desired to be displayed at a low resolution, the characters displayed on the display become very small, resulting in poor visibility. Become.
[0008]
Conversely, if the display mode of the display is set to XGA resolution, displaying application software that desirably has a high resolution requires not only a shortage of display area on the display, poor visibility, but also repeated screen scrolling. Operability also worsens.
[0009]
These are problems that occur because only one resolution can be set for the display. Considering that the development of displays capable of displaying even higher definition will progress in the future, the visibility of the user, Operability was getting worse. Therefore, there has been a demand for a technique for changing the resolution for each application (for each window) and displaying the same on one display.
[0010]
In view of the above circumstances, it is an object of the present invention to provide a computer, a display driver, and an image display method for displaying images having different resolutions on the same screen on a display capable of high definition display.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, an image display method according to a first aspect of the present invention is an image display method for a computer which displays an image on a display capable of high definition display, wherein the predetermined image is displayed on the entire display screen of the display. Securing a first memory area for storing image information displayed at a resolution of the first resolution, and when a display area of an image displayed at a high definition resolution different from the predetermined resolution is designated, the first memory area Setting a second memory area corresponding to the display area of the image in the memory area, and setting a third memory area for storing image information displayed at the high definition resolution with respect to the display area of the image. Securing the image information to be displayed at the predetermined resolution in the first memory area excluding the second memory area, and simultaneously displaying the image information at the high definition resolution. Writing image information to be written to the third memory area, image information written to the first memory area excluding the second memory area, and image information written to the third memory area And displaying the same on the same screen.
[0012]
According to the first aspect of the present invention, different resolutions can be set for each image on the same screen of a display capable of high definition display, so that visibility and operability are improved.
[0013]
Further, the computer according to the second aspect of the present invention includes a memory for storing image information of an arbitrary resolution, and a display adapter for outputting the image information stored in the memory to a display capable of high definition display. Means for securing a first memory area for storing image information displayed at a predetermined resolution over the entire display screen of the display; and a high-definition resolution different from the predetermined resolution. When a display area of an image to be displayed is designated, a second memory area corresponding to the display area of the image in the first memory area is set, and the height is set with respect to the display area of the image. Means for securing a third memory area for storing image information displayed at a fine resolution; and storing the image information displayed at the predetermined resolution in the second memory. Means for writing the image information displayed at the high definition resolution to the third memory area at the same time as writing to the first memory area except for the memory area, the first memory area excluding the second memory area. And outputting the image information written in the memory area and the image information written in the third memory area to the display.
[0014]
According to the second aspect of the present invention, different resolutions can be set for each image on the same screen of a display capable of high definition display, so that visibility and operability are improved.
[0015]
A display driver according to claim 3 is a memory for storing image information of an arbitrary resolution, and a display adapter for outputting the image information stored in the memory to a display capable of high-definition display. A display driver operating on a computer comprising: a means for securing the computer with a first memory area for storing image information displayed at a predetermined resolution over the entire display screen of the display; Means for setting a second memory area corresponding to the display area of the image in the first memory area when a display area of an image displayed at a high definition resolution different from the predetermined resolution is designated; Securing a third memory area for storing image information displayed at the high definition resolution for the display area of the image. And writing the image information displayed at the predetermined resolution to the first memory area excluding the second memory area, and simultaneously writing the image information displayed at the high definition resolution to the third memory area. It is characterized by functioning as means for writing to an area.
[0016]
According to the third aspect of the present invention, different resolutions can be set for each image on the same screen of a display capable of high definition display, so that visibility and operability are improved.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
[0018]
As shown in FIG. 1, a computer 1 according to the present embodiment includes a high-definition display 2 capable of high-definition display of about QXGA, an image memory for connecting the high-definition display 2 to the computer 1, and storing screen information. A video card 3 having (VRAM (Video RAM)) is provided.
[0019]
The computer 1 is managed by an OS (Operating System) 6 that can use two display drivers 4 and 5, a standard display driver 4 for displaying a screen on the high definition display 2 and a display driver 5 for high definition resolution. And a service for displaying a screen on an application via an API (Application Programming Interface). Further, the video card 3 has a function of displaying image information written in the image memory on a high-definition display.
[0020]
The standard display driver 4 has a function of displaying a screen at a resolution set for the high definition display 2. Normally, screen display is performed at the resolution set at the time of startup.
[0021]
The display driver for high definition resolution 5 has a function of displaying a specified area at a high definition resolution regardless of the set resolution.
[0022]
When the computer 1 executes an application (hereinafter, a general application 7) desirably used at a predetermined resolution or a low resolution (for example, a resolution of about SVGA), the computer 1 uses the standard display driver 4 to execute the predetermined resolution. Screen drawing by. Since the processing in this case is not different from that of the conventional processing, a detailed description is omitted.
[0023]
On the other hand, when executing an application desirably used at a high definition resolution (hereinafter, the application 8 for the high definition resolution), the screen drawing in the designated area is performed by the display driver 5 for the high definition resolution. Thus, applications having different resolutions coexist on the same screen at different resolutions for each window.
[0024]
Next, a detailed process of the computer 1 when displaying a screen will be described with reference to FIGS.
[0025]
First, when the high definition resolution application 8 is started, the high definition resolution application 8 notifies the OS (API) 6 of the window resolution, window size, and window position (step S01).
[0026]
When the OS (API) 6 receives the resolution, size, and position of the window from the high definition resolution application 8 (step S02), it determines a display driver for displaying the window (step S03). If the resolution notified from the high definition resolution application 8 is the same as the resolution currently set in the standard display driver 4 or is a low resolution, the standard driver is used as it is. If the resolution notified from the high definition resolution application 8 is higher than the resolution currently set in the standard display driver 4, the window uses the high definition resolution display driver 5.
[0027]
Next, the OS (API) 6 notifies the display driver of the resolution, size, and position of the window (step S04). When notified of the resolution, size, and position of the window, the standard display driver 4 first calculates the memory size of the screen on which the high-definition resolution application 8 is displayed based on the resolution and size of the window (step S05). This memory size is the size occupied by the window of the high definition resolution application 8 with respect to the resolution (screen size) currently set in the standard display driver 4. Next, the standard display driver 4 releases the memory area of the calculated memory size from the position of the window (clears the information), and performs a write prohibition measure on the memory area (step S06).
[0028]
When notified of the resolution, size, and position of the window, the high-resolution resolution display driver 5 first calculates the memory size of the screen on which the high-resolution resolution application 8 is displayed from the window resolution and size ( Step S07). This memory size is a size necessary for displaying the window at the notified resolution of the window. Next, the display driver 5 for high definition resolution secures a memory area of the calculated memory size from the position of the window (step S08).
[0029]
FIG. 3 schematically shows a memory space of an image memory (VRAM) provided in the video card 3. In FIG. 3, hatched portions (A) are opened and write-protected by the standard display driver 4. Indicates the memory area that was set. The hatched portion (B) indicates a memory area secured by the high-resolution display driver 5. The display drivers 4 and 5 secure a memory area required for displaying a full screen at a preset resolution, or secure a memory area as needed.
[0030]
Next, the high definition resolution application 8 notifies the OS (API) 6 of window screen information (step S10). When the OS (API) 6 is notified of the screen information from the high definition resolution application 8, the OS (API) 6 notifies the display drivers 4 and 5 of the screen information (step S11).
[0031]
The display drivers 4 and 5 sequentially write the screen information notified from the OS (API) 6 to the image memory (VRAM) (steps S12 and S13), and are written into the image memory (VRAM) by the display drivers 4 and 5. The displayed screen information is displayed on the same screen of the high definition display 2 by the video card 3.
[0032]
FIG. 4 is a screen image when the general application 7 and the high-definition resolution application 8 are displayed on the same screen at different resolutions for each window. As described above, since it is possible to set and display the resolution for each application (each window) on the same screen of one display, visibility and operability are improved.
[0033]
When the resolution is not notified from the application, the OS (API) 6 may set the resolution based on the notified window size. In this case, the OS (API) 6 compares the notified window size with the screen size that can be displayed at the currently set resolution, and if the notified window size is large, the OS (API) 6 displays the high-resolution display. Display is performed using the driver 5.
[0034]
【The invention's effect】
As described above, according to the present invention, different resolutions can be set for each image on the same screen of a display capable of high-definition display, so that visibility and operability are improved.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram according to an embodiment.
FIG. 2 is a flowchart illustrating a detailed processing procedure of a computer when displaying a screen.
FIG. 3 schematically shows a memory space of an image memory (VRAM) provided in the video card.
FIG. 4 is a screen image when applications corresponding to different resolutions coexist on the same screen at different resolutions for each window.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Computer 2 High definition display 3 Video card 4 Standard display driver 5 Display driver for high definition resolution 6 OS (API)
7 General application 8 High definition resolution application

Claims (3)

In an image display method of a computer for displaying an image on a display capable of displaying high definition,
Securing a first memory area for storing image information displayed at a predetermined resolution over the entire display screen of the display;
Setting a second memory area corresponding to the display area of the image in the first memory area when a display area of an image displayed at a high definition resolution different from the predetermined resolution is designated; ,
Securing a third memory area for storing image information displayed at the high definition resolution for the display area of the image;
At the same time, the image information displayed at the predetermined resolution is written to the first memory area excluding the second memory area, and the image information displayed at the high definition resolution is written to the third memory area. Process and
Displaying the image information written in the first memory area excluding the second memory area and the image information written in the third memory area on the same screen;
An image display method comprising: A computer comprising a memory for storing image information of any resolution, and a display adapter for outputting the image information stored in the memory to a display capable of high-definition display,
Means for securing a first memory area for storing image information displayed at a predetermined resolution over the entire display screen of the display;
Means for setting a second memory area corresponding to the display area of the image in the first memory area when a display area of an image displayed at a high definition resolution different from the predetermined resolution is designated; ,
Means for securing a third memory area for storing image information displayed at the high definition resolution for a display area of the image;
At the same time, the image information displayed at the predetermined resolution is written to the first memory area excluding the second memory area, and the image information displayed at the high definition resolution is written to the third memory area. Means,
With
A computer outputting image information written in the first memory area excluding the second memory area and image information written in the third memory area to the display. . A memory that stores image information of any resolution, and a display driver that operates on a computer including a display adapter that outputs the image information stored in the memory to a display capable of high-definition display,
Said computer,
Means for securing a first memory area for storing image information displayed at a predetermined resolution over the entire display screen of the display;
Means for setting a second memory area corresponding to the display area of the image in the first memory area when a display area of an image displayed at a high definition resolution different from the predetermined resolution is designated; ,
Means for securing a third memory area for storing image information displayed at the high definition resolution for a display area of the image;
At the same time, the image information displayed at the predetermined resolution is written to the first memory area excluding the second memory area, and the image information displayed at the high definition resolution is written to the third memory area. Means,
A display driver characterized by functioning as a display driver.

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