KR100421910B1 - Video card and a method of processing the data - Google Patents

Abstract

The present invention relates to a video card and a data processing method thereof, which can be used in both a normal scan method and a TPS method by changing a conventional color reproduction order from a conventional color reproduction order of a video card. In the video card provided, a determination unit for determining the first or second scanning method of the video card, a first memory for storing data output from the video chip according to a control signal, and in the determination unit If the video card is determined to be the second scanning method, a second memory for relocating and storing the data stored in the first memory into data suitable for the second scanning method, and the digital data stored in the first or second memory may be analog data. It is configured to include D / A converter to convert to normal scan method and TPS scan method. By providing a video card that can be used in both, the effect can be used in a TPS type monitor for wide-angle deflection.

Description

Video card and a method of processing the data}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video card, and in particular, a transverse scan (hereinafter referred to as TPS) method required for developing a wide-angle monitor. The present invention relates to a video card which allows to change the order of color information to be reproduced in order to deflect the information vertically on the screen.

A typical computer system includes a main body of a computer that performs various operations, a monitor displaying color information transmitted from the main computer on a screen, and a monitor connecting the main body of the computer and a monitor to transfer color information from the video card of the main computer to the monitor. It consists of a cable.

The main body is composed of a central processing unit (CPU) and a main memory, and the peripheral is composed of an input / output device and an auxiliary memory device. The input devices, output devices, control devices, main memory devices, and computing devices of the computer are referred to as the five devices of the computer.

Input devices include keyboards, mice, and scanners. Monitors and printers are most commonly used as output devices.

Hereinafter, a configuration and operation of a computer system according to the related art will be described with reference to the accompanying drawings.

1 is a block diagram showing the structure of a video card according to the prior art, Figure 2 is a flowchart showing the operation of the video card according to the prior art, Figures 3a to 3c is a scan method of the normal memory video memory, memory This figure shows the address and data storage order.

As shown in FIG. 1, the video card 20 according to the related art receives a control signal from the CPU 10 and stores a digital image data to be displayed on the monitor 30 in the video memory 22. 21 and a D / A converter 23 for converting digital image data stored in the video memory 22 into analog image data.

The data processing method of the video card configured as described above will be described with reference to FIG. 2. First, the CPU issues a screen processing command (S1).

The display driver then converts the command into a command that can be processed by the video chip 21 (S2).

Subsequently, the video chip 21 writes data output to the display to the video memory 22 (S3).

The data recorded in the video memory 22 is converted into analog data through the D / A converter 23 and output on the screen through the monitor (S4 to S5).

The video data processing method of the video card according to the prior art will be described in more detail with reference to FIGS. 3A to 3C.

In the conventional normal scan method, as shown in FIG. 3A, when the scan starts on the upper left side of the screen and proceeds to the horizontal and right sides, and the scanning of one line is completed, the beam moves to the left side of the screen during the feedback time of the horizontal deflection current. Then, start scanning from the left side of the next line and scan the second line to the right again.

When the scanning of one frame of the screen is completed by the above method, the electron beam is moved to the upper left side of the screen during the vertical return time to prepare for scanning of the next frame. Accordingly, in a screen composed of 12 pixels of 4 horizontal and 3 vertical pixels, pixels are displayed on the screen in the order of 1,2,3,4,5,6,7,8,9,10,11,12.

Therefore, the order in which the information of the pixels to be displayed on the screen in the conventional video card is stored in the video memory 22 is as shown in Figs. 3B and 3C.

That is, in order to store pixel information of a screen in a memory, the pixel has a row address and a column address. Each pixel is sequentially stored in an address obtained by combining a row address and a column address.

A 12 pixel 4 * 3 pixel screen requires a combination of 3 rows * 4 columns of memory, and the pixels processed by the video chip and stored in the video memory are 1,2,3,4,5,6 (1,1), (1,2), (1.3), (1,4), (2,1) (2,2), (2 in the order of, 7,8,9,10,11,12 And (3), (2, 4), (3, 1), and (3, 2) (3, 3) (3, 4).

The data stored in this way is converted into an analog signal through the D / A converter 23 and displayed on the monitor.

As described above, the video card according to the related art has the following problems.

First, conventional CDT monitors have less deflection angles than LCD monitors, so the overall length of the CDT monitor is large enough to occupy the table.

Second, CDT monitors have advantages over LCD monitors in terms of brightness, viewing angle, and price.However, as the yield is increased due to the stabilization of the LCD monitor's process, the cost of materials is reduced, and the viewing angle and brightness are improved by technological advances. The advantages of having CDT monitors are weakening.

Third, the long length and heavy weight of the CDT monitor are more problematic than other display devices.

The present invention has been made to solve this problem, and has a function to change from the existing color playback order of the video card color information playback order to the TPS playback order, so that the video can be used in both the normal scan method and the TPS method. Its purpose is to provide a card and its data processing method.

1 is a block diagram schematically showing the configuration of a video card according to the prior art;

2 is a flowchart illustrating a data processing method of a video card according to the prior art.

3 is a view showing an example of a data processing method of a video card according to the prior art;

4 is a block diagram showing the configuration of a video card according to the present invention;

5 is a flowchart illustrating a data processing method of a video card according to the present invention.

6 is a diagram showing an example of a data processing method of a video card according to the present invention;

Explanation of symbols for main parts of the drawings

100: video chip 110: the first memory

120: determination unit 130: second memory

140: D / A Converter

The video card according to the present invention for achieving the above object is a video card having a video chip, the determination unit for determining the first or second scanning method of the video card and from the video chip in accordance with a control signal A first memory for storing the output data and a second memory for relocating and storing the data stored in the first memory to data suitable for the second scanning method when the determination unit determines that the video card is the second scanning method. And a D / A converter for converting digital data stored in the first or second memory into analog data.

In accordance with one aspect of the present invention, a data processing method of a video card includes a video chip and a first data processing method. Storing in the first memory; determining whether the scan method is a first scan method or a second scan method; and if the scan method is a second scan method, storing the digital image data stored in the first memory. And storing the digital image data re-stored in the second memory and converting the digital image data re-stored in the second memory into analog image data.

Hereinafter, a video card and a data processing method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a block diagram showing a configuration of a video card according to the present invention, FIG. 5 is a flowchart showing a data processing method of a video card according to the present invention, and FIGS. 6A to 6C are data of a video card according to the present invention. A diagram showing an embodiment of a processing method.

As shown in FIG. 4, the video card according to the present invention includes a video chip 100 for storing data input according to a screen processing command input from a CPU (not shown), and control of the video chip 100. According to the first memory 110 for storing the input data, the determination unit 120 for determining the scan method, and the scan method determined by the determination unit 120 is the TPS method, the first memory A second memory 130 for rearranging and storing the data stored in the 110 in accordance with the TPS method, and for converting the digital data stored in the first memory 110 or the second memory 130 to analog data It consists of a D / A converter 140.

The data processing method of the video card according to the present invention configured as described above will be described with reference to FIG. 5. First, when a screen processing command is input from the CPU, the display driver converts the command into a command that the video chip 100 can process (S11). S12).

Then, the video chip 100 writes the input data to the first memory 110 (S13).

Subsequently, it is determined whether the scan method of the current monitor is a normal scan method (S 14).

As a result of the determination (S14), if the scan method is a normal scan method, the data stored in the first memory 110 is converted into analog data and output to the monitor (S15 to S16).

On the other hand, if the determination result (S14), if the scan method is the TPS method, the data stored in the first memory 110 is rearranged in the second memory 130 to match the display order for the TPS (S17).

The data rearranged in the second memory 130 is converted into analog data and output to the monitor (S15 to S16).

As described above, the video card and the data processing method according to the present invention will be described with reference to FIGS. 6A to 6C.

That is, if a screen pixel of a monitor configured with a 4: 3 screen size is composed of 12 pixels of 4 * 3 width, the order in which the information of the pixel to be displayed in the memory of the TPS video card of the present invention is stored in the memory is a scan method. In the case of the same normal scanning method as in the conventional case, scanning is performed in the same manner as in the prior art.

On the other hand, when the scanning method is TPS method, as shown in FIG. 6A, scanning starts from the upper left side of the screen and proceeds to the vertical side and the lower side. It moves upward and starts scanning from the upper side of the next line and scans the second line downward again.

After the scanning of one frame of the screen is completed by the above method, during the horizontal feedback time, the electron beam is moved to the upper left side of the screen to prepare for scanning of the next frame.

According to this, in a screen composed of 12 pixels having a width of 4 * 3, a TPS method requires a memory composed of a combination of four rows and three columns, and is processed by the video chip 100 and stored in the TPS video memory 110. The pixels are displayed in the order of 1,5,9,2,6,10,3,7,11,4,8,12.

Therefore, the data stored in the first memory 110 is (1,1), (1,2), (1,3), (2,1), (2,2), (2,3), ( 3,1), (3,2), (3,3), (4,1), (4,2), (4,3) are stored in the second memory 130 for TPS with addresses .

As such, the data stored in the second memory 130 is converted into analog data through the D / A converter 140 and displayed on the monitor.

As described above, the video card and the data processing method according to the present invention can be used in a TPS type monitor for wide-angle deflection by providing a video card that can be used in both a normal scan method and a TPS scan method.

Claims (5)

In a video card with a video chip, A determination unit for determining a first or second scan method of the video card; A first memory for storing data output from the video chip according to a control signal; A second memory for rearranging and storing data stored in the first memory into data suitable for a second scan method when the determination unit determines that the video card is the second scan method; And, And a D / A converter for converting digital data stored in the first or second memory into analog data. The method of claim 1, And the first scan method is a normal scan method, and the second scan method is a transposed scan method. In a data processing method of a video card having a video chip, first and second memories, Storing, by the video chip, digital image data in the first memory when a screen processing command is input; Determining whether the scan method is a first scan method or a second scan method; Relocating and storing digital image data stored in the first memory in a second memory so as to conform to the second scan method when the scan method is a second scan method; And And converting the digital image data stored in the second memory into analog image data and displaying the analog image data. The method of claim 3, wherein And converting the digital image data stored in the first memory into analog image data and displaying the analog image data when the scan method is the first scan method. The method of claim 3, wherein Re-storing the image data in a second memory And rearranging the digital image data in a combination of four rows and three columns.