KR100481493B1 - Video card for using to moniter of vertical scanning type - Google Patents

Abstract

The present invention relates to a monitor, which is configured to deflect an electron beam from left to right in order to reproduce an existing monitor screen so that color information, which constitutes the screen, can be deflected from the lower side to the upper side or the upper side to the lower side without a separate device. By applying the algorithm to the video card by changing the order of the color information to have the video signal playback order in the vertical scanning method, the monitor can be lowered because there is no need to install a separate video signal converter in the monitor internal circuit. In particular, it is possible to reduce the difficulty of circuit operation generated when adding hardware to the existing monitor, and at the same time, it has an excellent effect of increasing the reliability of the monitor operation.

Description

Video card for using a vertical scanning type {video card for using to moniter of vertical scanning type}

The present invention relates to a monitor, and more specifically, to deflect an electron beam from left to right in order to reproduce an existing monitor screen, and deflect color information, which constitutes a screen, from a lower side to an upper side or an upper side to a lower side without a separate device. Since the video card is applied to the video card by changing the order of the color information so that the video signal reproduction order of the vertical scanning method can be applied, the monitor internal circuit does not need to install a separate video signal conversion device. In particular, the present invention relates to a video card for a monitor that can reduce the difficulty of circuit operation generated when adding hardware to an existing monitor, and at the same time, increase the reliability of the monitor operation.

In general, in the electron beam deflection method for redisplaying a screen on a monitor, a horizontal scanning method for constituting a screen by deflecting color information from the left to the right of the screen, and the screen by deflecting the color information from the lower side to the upper side of the screen. There is a vertical scanning method, which is a horizontal scanning method of 1, 2, 3, 4, 5, 6, ..., 12 assuming that the monitor size is composed of 4: 3 screen The video data with the input is displayed on the screen in the same order as shown in Fig. 1, and the vertical scanning method is 9, 5, 1, 10, 6, 2, 11, 7, 3, 12, 8, As shown in FIG. 2, video data is input in the same order as in FIG. 4 to form a screen such as the horizontal scan type monitor.

In this case, in order to make a video signal suitable for a vertical scan type monitor as described above, a device having a video conversion function must be additionally installed inside a conventional monitor chassis. The vertical scan type monitor configuration will be described in detail as follows. same.

As shown in FIG. 3, the vertical scan monitor 42 includes an analog-to-digital converter (ADC) 10 for converting an analog video signal from a video signal input terminal into a digital signal; A logic device (New ASIC) 11 for controlling the input / output of the digital signal converted through the ADC 10 at high speed, a memory 12 for storing the digital signal controlled through the logic device 11; A digital-to-analog converter (DAC) 13 for reading digital data from the memory 12 and converting the digital signal into an analog signal for the monitor 42 to recognize; and the ADC 10 and Digital chip such as logic device 11, DAC 13, etc., and the microcomputer 14 for transmitting the input video signal to the electronic gun (not shown) of the monitor 42 and each unit in accordance with the synchronization signal, such as a horizontal scanning method And the peripheral circuit section 15, the vertical and horizontal deflection portions 16 for deflecting the electron beam scanned from the electron gun from side to side and up and down to form an image on the monitor screen, and components of the monitor 42. It is composed of a power supply unit 17 to supply.

In order to drive the vertical scan type monitor 42 configured as described above, the ADC 10 and the DAC 13 converting an analog video signal into a digital signal or converting a digital signal into an analog signal in the monitor 42. And, the logic device 11, the memory 12, etc. to control the input and output of the digital signal converted through the ADC 10 at a high speed should be installed, as described above ADC 10, DAC 13, When the logic device 11, the memory 12, and the like are installed in the monitor 42, not only the price of the monitor 42 increases but also the conversion from analog signals to digital signals and back from digital signals to analog signals. In this case, data loss occurs and the screen of the monitor 42 is deteriorated. This is directly related to the screen configuration, so that data processing must be performed at high speed. Circuit operation was a major problem that is caused by force.

This problem is described using a monitor that displays a 3D screen at a normal speed with a resolution of 1280 * 1024 as an example.

The data processing speed of the ADC 10, the DAC 13, and the logic device 11 installed in the monitor 42 should be at least about 200 MHz, and 48 Mbytes for storing digital signal data, and for outputting digital signal data. Since an SDRAM memory of 48 Mbytes, i.e. at least 96 Mbytes, is required, a cost increase in excess of $ 10 in circuit costs added to the production of the vertical scan type monitor 42 is generated, in particular, the reliability of the monitor 42. And if the safety is considered that the cost will be further increased.

In order to solve the problems described above, the present invention, the color information that constitutes the screen by deflecting the electron beam from the left to the right in order to reproduce the conventional vertical scan type monitor screen from the bottom side of the screen without a separate device Alternatively, it is necessary to install a separate video signal converter in the monitor internal circuit by applying an algorithm to the video card to change the order of the color information so as to deflect from the upper side to the lower side so as to have a vertical scanning video signal reproduction order. Since there is no, it is possible to lower the price of the monitor, and in particular, to reduce the difficulty of circuit operation generated when adding hardware to the existing monitor, and to increase the reliability of the monitor operation.

The object of the present invention is a vertical scan type monitor video of the present invention, which is installed in a conventional monitor chassis so that a video card converting function of a video signal can be replaced by a video card mounted inside a computer main body. It can be solved by the card, it will be described in detail with reference to the accompanying drawings.

The monitor video card 50a of the vertical scanning method according to the present invention includes a computer main body 41 for performing various operations and a monitor 42 for displaying color information (video information) transmitted from the main body 41 on a screen. And a monitor cable (43) connecting the computer main body (41) and the monitor (42) to transfer color information from the video card (50) of the computer main body (41) to the monitor (42);

A video card inserted into a motherboard slot (not shown) in the computer body 41 to deflect an electron beam (not shown) from the lower side to the upper side or the upper side to the lower side of the screen for screen reproduction of the monitor 42. In addition to the function of converting the color information data order to 50, the video chipset 51 includes an algorithm 61 for storing data in the video memory 53 in the order of vertical scanning. .

Hereinafter, the vertical scan type monitor video card of the present invention will be described in detail.

4 is a schematic configuration diagram of a general computer system, FIG. 5 is a configuration of a video card mounted on the computer main body of FIG. 4, and FIG. 6 is a flow diagram showing a data processing flow of the video card shown in FIG. Fig. 7 shows an algorithm block diagram of a video card showing the data flow procedure of Fig. 6.

First, prior to explaining the video card of the present invention, a general computer system will be described.

As shown in FIG. 4, a personal computer system composed basically of a main body and a peripheral device includes a computer main body 41 which performs various operations, and color information (video information) transmitted from the main body 41 on a screen. The monitor 42 to be displayed and the monitor body 43 connecting the computer main body 41 and the monitor 42 to transfer color information from the video card 50 of the computer main body 41 to the monitor 42. In particular, the computer main body 41 is composed of a central processing unit (CPU) and a main memory device, and the peripheral device is composed of an input / output device and an auxiliary memory device.

In addition, the video card 50 which converts digital data into analog data so that an image can be reproduced on a monitor is, as illustrated in FIG. 5, a graphics controller 51 and a ROM-BIOS 52. , A video memory 53, a RAMDAC 54, a feature connector 55, and a monitor desub connector 56.

In the case of the horizontal deflection type data processing procedure of the video card 50 configured as described above, as shown in FIGS. 6 and 7, when the display data is output from the CPU and moved to the video chipset 51 via the bus, In the video chipset 51, each pixel information constituting the screen is converted into digital data so that the converted digital data is stored in the video memory 53, and the digital data stored in the video memory 53 is converted into a digital-to-analog converter ( RAMDAC: As the RAM 54 is read, the digital data is output from the video memory 53 to the RAM 54, and the RAM 54 is converted into an analog signal that can be understood by the monitor 42. The image is reproduced by being sent to the monitor 42 via the sub connector 56.

The feature connector 55, which has not been described, is a connector prepared so that an additional device for expanding the function of the video card 50 can be mounted.

As described above, in the present invention, the video card 50 converts the image digital data processed inside the computer main body 41 into analog data so that the image can be reproduced on the monitor 42. An algorithm 61 is applied to change the order of color information so as to be deflected from the upper side or the upper side to the lower side, so that the video signal reproduction order of the vertical scanning method is applied. The detailed description of the video card 50a is as follows.

8 is a data flow state diagram illustrating the video card data processing flow of the present invention, and FIG. 9 is an algorithm block diagram of the video card illustrating the data flow process sequence of FIG. 8.

The video card 50a of the present invention has the same configuration as that of the video card 50 shown in FIG. 5, so as to produce a video signal required for the vertical scan type monitor 42, as shown in FIG. Likewise, when the video chipset 51 converts each pixel information constituting the screen into digital data and stores it in the video memory 53 during the data processing of the video card 50a, the order of the video data is vertically scanned. Algorithms 61 for sequentially storing the video memory 53 in this order are applied.

The data processing of the video card 50a will be described in contrast with the video card algorithm block diagram shown in FIG.

When the display data transmitted from the CPU moves to the video chipset 51 which is a component of the video card 50a via the bus, the video chipset 51 converts each pixel information constituting the screen into digital data. In addition, the converted digital data is stored (61) in the video memory 53 in the order of the vertical scan method, and the digital data stored in the video memory 53 is sequentially converted into a digital analog converter, that is, RAMDAC 54. The digital data is converted into an analog signal that can be understood by the monitor 42 and sent to the monitor 42 through the desub connector 56 of the video card 50a according to the vertical and horizontal synchronization signals. Will be played.

10 and 11 illustrate a data flow diagram and an algorithm block diagram of a video card according to another embodiment of the present invention, which is described in detail later by the RAMDAC 54 during data processing of the video card 50b shown in FIG. When reading the digital data of each pixel information stored in the video memory 53, an algorithm 62 is applied to change the order of the pixel data so as to output the video signal sequence in the vertical mode. The data processing procedure of the video card 50b will be described in contrast with the video card algorithm block diagram shown in FIG.

When the display data transmitted from the CPU is moved to the video chipset 51 which is a component of the video card 50b via the bus, the video chipset 51 converts each pixel information constituting the screen into digital data. The digital data stored in the video memory 53 and the digital data stored in the video memory 53 can be read by the RAMAC 54 in the order of vertical scanning (62) and the monitor 42 can understand the digital data. The image is converted into an analog signal and sent to the monitor 42 through the sub connector 56 of the video card 50b in accordance with the vertical and horizontal synchronizing signals to reproduce the image.

As described above, the vertical scan type monitor video card 50a of the present invention changes the order of color information so as to be deflected from the lower side to the upper side or the upper side to the lower side of the screen without a separate device, so that the vertical scan type video signal reproduction order is possible. Since the algorithm 61 is applied to the video card 50a, the cost of the monitor can be lowered, and in particular, it is an excellent invention that can reduce the loss due to data conversion.

The vertical scan type monitor video card according to the present invention does not use a separate device (ADC, DAC, logic device, memory) in driving a vertical scan type monitor, and displays a video card mounted on a computer main body. By applying an algorithm to change the order of the color information so as to deflect from the lower side to the upper side or the upper side to the lower side of the, to have the vertical scanning video signal reproduction order, the price of the monitor can be prevented at the same time. In addition, it can reduce the difficulty of circuit operation, especially when hardware is added to an existing monitor, and has an excellent effect of increasing the reliability of the monitor operation.

In addition, in order to drive the vertical scan type monitor, the digital data is stored in the video memory installed in the video card in the order of the vertical scan method, or the digital data stored in the video memory in the RAM read in the vertical scan method, etc. The reading and writing of the data in the video memory can be performed in one bank, so that there is no need to install additional memory in the video card.

1 is a state diagram showing a horizontal scanning method of an electron beam and a video signal sequence for reproducing a screen on a conventional monitor.

2 is a state diagram showing a vertical scanning method of an electron beam and a video signal sequence for reproducing a screen on a conventional monitor;

3 is a structural diagram of a conventional monitor for reproducing the screen through the vertical scanning method.

4 is a schematic structural diagram of a general computer system.

5 is a configuration diagram of a video card attached to the computer main body of FIG.

6 is a flow diagram showing a data processing flow of the video card shown in FIG.

7 is an algorithm block diagram of a video card showing the data flow procedure of FIG. 6;

8 is a data flow diagram illustrating a video card data processing flow of the present invention.

9 is an algorithm block diagram of a video card showing the data flow procedure of FIG. 8;

10 is a data flow diagram illustrating a video card data processing flow according to another embodiment of the present invention.

FIG. 11 is an algorithm block diagram of a video card showing the data flow procedure of FIG. 10; FIG.

Explanation of symbols on the main parts of the drawings

50, 50a, 50b. Graphics card 51. Graphics controller

52. ROM-BIOS 53. Video Memory

54. RAMDAC 55. Feature Connectors

56. Monitor desub connector

61. Algorithms for storing vertical scan video data in memory.

62. Algorithms for reversing the order of stored data and outputting them in the order of vertical video signals

Claims (2)

A computer system comprising a computer main body performing various operations, a monitor displaying display data transmitted from the main body on a screen, and a video cable connecting the computer and the monitor to transfer color information from the video card of the main computer to the monitor. To; A video chipset which converts each pixel information constituting the screen into digital data and stores the converted digital data in the order of vertical scanning; A video memory in which the digital data is stored; And a RAMDAC configured to sequentially read digital data stored in the video memory, convert the digital data into an analog signal, and transmit the digital data to the monitor according to vertical and horizontal synchronization signals. A computer system comprising a computer main body performing various operations, a monitor displaying color information transmitted from the main body on a screen, and a video cable connecting the computer and the monitor to transfer color information from a video card of the computer main body to a monitor. To; A video chipset that converts each pixel information constituting the screen into digital data, A video memory in which the digital data is stored; And a RAMDAC configured to read digital data stored in the video memory in order of a vertical scan method, convert the digital data into an analog signal, and transmit the digital data to the monitor according to vertical and horizontal synchronization signals.