KR0182931B1 - Widescreen monitor with NTSC and SVHS reception - Google Patents

Abstract

The present invention relates to a widescreen monitor for both NTSC and SVHS. More specifically, the present invention relates to a multi-mode display signal including a VGA signal, which is an output signal of a computer, on a wide screen having a horizontal × vertical ratio of 16 × 9. The present invention relates to an NTSC and SVHS combined widescreen monitor capable of receiving and displaying SVCR VCR signals and CATV and game signals. The input display signal is selected by the microcomputer's control signal, the signal is converted into a form suitable for displaying the signal on a monitor, and the image ratio is converted to display on a wide screen having a ratio of width × length to 16 × 9. Therefore, in realizing a multimedia culture, it is possible to provide a product that can receive various signal sources on a large screen with better visual characteristics to consumers.

Description

Widescreen monitor with NTSC and SVHS reception

1 is a block diagram of a widescreen monitor for both NTSC and SVHS reception according to the present invention.

FIG. 2 is a block diagram showing the configuration of the signal processing part of FIG.

3 is a signal waveform diagram for each node of FIG.

The present invention relates to a widescreen monitor for both NTSC and SVHS. More specifically, the present invention relates to a multi-mode display signal including a VGA signal, which is an output signal of a computer, on a wide screen having a horizontal × vertical ratio of 16 × 9. The present invention relates to an NTSC and SVHS combined widescreen monitor capable of receiving and displaying SVCR VCR signals and CATV and game signals.

With the rapid development of semiconductor devices in recent years, the technology of hardware and software related to computers is growing remarkably, and the development of multimedia in the category is achieving remarkable results. to be. As the multimedia culture develops, users need display devices having clearer picture quality, lively sound quality, and large sized screens. In addition, with respect to the human visual characteristics, the preference of display devices having a ratio of width x length to 16 x 9 is increasing. However, in spite of the above trend, the conventional monitor simply displays a signal of 4 × 3 ratio of width × length having various frequencies output from a computer on a screen of 4 × 3 of width × length, and also displays a wide screen. TVs implement wide deflection for a 15.75KHz single frequency. Accordingly, there is a problem that does not fully satisfy the needs of consumers expecting the realization of a multi-media culture.

The present invention is to realize the satisfaction of the needs of the consumer, including the NTSC, SVHS, and other signals such as a wide frequency screen that can display the VGA and various frequencies of the signal 16 × 9 ratio of the vertical and horizontal and The aim is to provide a widescreen monitor for both SVHS reception.

The present invention for achieving the above object is the VCR, CATV, the input signal control unit for selectively receiving the VGA signal output from the game machine, and the signal input through the input signal control unit is separated into a color difference signal and a luminance signal, and again A color reproduction unit for synthesizing and outputting the R, G, and B signals, and a signal processing unit for converting the output signal of the color reproduction unit into digital and converting the screen aspect ratio and then outputting the double-scanned video signal as an analog signal; The microcomputer outputs a control signal for selecting an input signal, receives a synchronization signal provided through a computer and an input signal controller, and outputs a control signal, and a color signal provided through a signal processing unit and a color signal provided from a computer. Amplified color signal in cathode ray tube with switch operated according to selection control signal provided by micom In accordance with the synchronizing signal supplied through the video output unit, and a microcomputer which force it is characterized in that the configuration comprises a deflection that controls the deflection current.

In addition, the operation of the input signal control unit is controlled by the output signal of the microcomputer, the output signal of the microcomputer is characterized in that it can be controlled by a remote control.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the configuration of the present invention includes an input signal adjusting unit 100, a color reproducing unit 200, a signal processing unit 300, a video output unit 400, and a deflection unit 500. ) And a microcomputer 600 that outputs a control signal for controlling each of the circuits.

First, the input signal adjusting unit 100 includes a switch SW1 for discriminating and selecting a composite signal of NTSC from a luminance signal Y of SVHS, a combination filter 110 connected to the rear stage, and a combination filter ( A switch SW2 for discriminating and selecting the color difference signal C from the luminance signal Y separated from the color difference signal C from the luminance signal Y, and the luminance signal Y from the signal applied by the switch SW1. And a synchronization separating circuit 120 for transmitting the composite synchronization signal to the rear stage.

The color reproduction unit 200 includes a color integrated circuit (Chroma IC) 200 that adjusts the result according to the output result of the combination filter 110 and the switch selection of the switch SW2.

In addition, as illustrated in FIG. 2, the signal processing unit 300 may include an A / D converter 310 and an A / D converter 310 for converting the output signal of the color reproduction unit 200 into a digital signal. And an aspect ratio conversion device 320 (hereinafter referred to as ARC) 320 for converting the screen information converted into the digital signal so that the aspect ratio is 16 × 9.

In addition to this, a double scanning technique is applied to convert the TV signal into the same form as the frequency of the computer screen output signal. The double scanning circuit 330 and the digital signal converted by the double scanning circuit 330 are converted into analog signals. / A converter 340 is configured.

The video output unit 400 includes a switch SW3 for selecting whether to display NTSC and SVHS signals or to receive and display a screen output signal of a VGA mode transmitted from a computer.

In addition, a video preamplifier 410 for transmitting a corresponding signal to a cathode ray tube (CRT) according to a selection result of the switch SW3 is configured.

In addition, the deflection unit 500 includes a horizontal and vertical oscillation unit 510, a vertical deflection output unit 520, and a horizontal deflection output unit 530.

Here, the microcomputer 600 having a function of adjusting the overall operation is controlled by controlling the input signal adjusting unit 100, the video output unit 400, and the deflection unit 500.

The present invention configured as described above will be described in detail through the operation of each component part.

In general, a monitor is very similar to a form in which an antenna unit for receiving radio waves sent from a broadcasting station from a television receiver and a tuner unit for separating the antenna unit are removed.

Also, if the input signal type is a monitor, the color signal of red (hereinafter referred to as R), green (hereinafter referred to as G) and blue (hereinafter referred to as B) and blue sync signal (Horizontal Sync) Signal and vertical sync signal are transmitted in a separate method, but in the TV method, they are transmitted as a composite signal in which a synchronization signal is superimposed on a video signal.

Therefore, R, G, B classification method is suitable for high resolution because horizontal and vertical frequencies on the screen are freely selected.

In a TV receiver, signal bands, horizontal and vertical deflection frequencies are determined according to the specifications of the signal system (NTSC, PAL, SECAM, etc.). Complex signals are constrained by video, horizontal, and vertical, and there is a limit between video bands, color carriers, and horizontal and vertical deflection frequencies, making it impossible to freely select frequencies.

Therefore, in order to simultaneously use NTSC signal and computer display signal, data type unification is necessary. In order to use the luminance signal (hereinafter referred to as Y signal) and the chrominance signal (hereinafter referred to as C signal), the display signal of the computer inputted in the form of R, G, and B is Y. You need to convert it to C. And this Y, C signal will be inconvenient to be converted to R, G, B signal form and output again. Therefore, it converts Y, C type signals into R, G, B type signals.

TV, CATV, and game signal sources input as NTSC signals are supplied with C signals, which are chrominance signals, and Y signals, which are luminance signals, as composite signals, and VCRs input as SVHS signals are C signals, which are chrominance signals, and luminance signals. The Y signal is applied separately.

In addition, the VGA signal output from the computer is separately separated from the color signal and the horizontal synchronous and vertical synchronous signal.

Therefore, the division of SVHS and NTSC signal is selected by the switch SW1 by distinguishing the composite signal of NTSC from the luminance signal Y of SVHS. The color difference signal C is separated from the luminance signal Y signal and the color difference signal C separated by the combination filter 110 by using the switch SW2.

In this case, the two switches SW1 and SW2 are controlled by the control signal of the microcomputer 600. That is, when the output value of the first output signal line 601 of the microcomputer 600 is high (H), the NTSC signal becomes conductive, and the output value of the first output signal line 601 is low (L). In this case, the SVHS signal is conducted.

And when the synchronous synthesis signal of NTSC and SVHS is applied to the microcomputer 600, in order to control the occurrence of discrimination error of the microcomputer 600, the output value of the second output signal line 602 of the microcomputer 600 In the case of the high H, the color difference signal C of the SVHS signal is separately detected.

In addition, the microcomputer 600 recognizes a composite synchronization signal from the luminance signal Y using the synchronization signal of the NTSC and SVHS signals using the synchronization separation circuit 120.

The signal applied from the composite signal source and the SVHS signal are synthesized by the chroma IC 200 and output as signals of R, G, B or Y, R-Y, and B-Y.

In order to display such an output signal on a wide screen, it is necessary to process the signal. That is, the color output signals of the analog states such as R, G, and B signals or Y, R-Y, and B-Y are digitized using an A / D converter (Analog / Digital Convertor) 310. The color signal converted into the digital signal is further converted into a screen signal having a ratio of 4 × 3 by 4 × 3 by an aspect ratio conversion circuit 320. The signal is then converted into an analog signal by a digital multiplication circuit (Double Scanning) 330 and again by a digital / analog converter (340). This results in a frequency multiplied video signal with an aspect ratio of 9:16.

In addition, the VGA signal input from the computer is controlled automatically by the control of the microcomputer 600. At this time, the switching of the switch SW3 determines whether to output the NTSC or SVHS signal or the video signal of the computer. That is, when the output signal of the third output signal line 603 of the microcomputer 600 is high (H), the VGA signal of the computer is low and the output signal of the third output signal line 603 is low (L). In this case, it is decided to recognize NTSC or SVHS signals.

In addition, the microcomputer 600 can automatically control the synchronization signal of the input signal to control the size, phase, color, etc. of the signal. The microcomputer 600 which outputs such a control signal allows an overall control operation such as reduction and enlargement of the screen, color and volume adjustment through an interface with the remote control system 700.

FIG. 3 shows an output signal of each node shown in FIG.

FIG. 3 (a) shows that the NTSC signal or the SVHS signal transmitted to the combination filter 110 and the synchronous separation circuit 120 is detected by the switching operation of the first switch SW1 at the node a.

FIG. 3 (b) shows that the luminance signal applied to the second switch SW2 is detected through the combination filter 110 at node b.

FIG. 3 (c) shows that the signal applied to the color integrated circuit 200 through the combination filter 110 is detected at node c.

FIG. 3 (d) shows that the R, G, and B synchronization signals applied from the computer to the third switch SW3 are detected at the node d.

In the third (e) or the e-node, the first output signal line 601 and the third output signal line 603 of the microcomputer 600 are applied to the first switch SW1 and the third switch SW3. Indicates that a control signal to be detected is detected.

FIG. 3 (f) shows that the R, G, and B signals output from the video preamplifier 410 are detected at the f node.

As described above, the present invention is capable of displaying VGA and various frequency signals, including TV signals such as NTSC and SVHS, on a wide screen having a ratio of width to height of 16 × 9. It is a large screen with better visual characteristics to consumers, and has the effect of providing a product that can receive various signal sources.

Claims (3)

An input signal controller for selectively receiving a VGA signal output from a VCR, a CATV, and a game machine, and a signal input through the input signal controller is separated into a color difference signal and a luminance signal, and then synthesized into R, G, and B signals. A color reproduction unit for converting and outputting the output signal, a signal processing unit for converting the output signal of the color reproduction unit into digital and converting the screen aspect ratio, and then outputting the double-scanned video signal as an analog signal, and a control signal for selecting an input signal. A microcomputer to output a control signal by receiving a synchronization signal provided through a computer and the input signal controller, and a color signal provided from the signal processor and a color signal provided from a computer to be provided by the microcomputer. A video for amplifying and outputting a color signal to a cathode ray tube with a switch operated according to a selective control signal. Ryeokbu and, the microcomputer receives the NTSC and SVHS combine wide-screen monitor that is configured by including a deflector for controlling the deflection current in accordance with the synchronizing signal provided through. 2. The wide screen monitor as claimed in claim 1, wherein the microcomputer is controlled by a wireless signal input from a remote controller. The A / D converter of claim 1, wherein the signal processing unit converts the output signal of the color reproduction unit into a digital signal, and converts the output signal of the A / D converter so that the horizontal × vertical ratio has a ratio of 16 × 9. And a double scanning circuit for converting the TV signal into the same form as the frequency of the computer screen output signal by applying a double scan technique to the screen aspect ratio converting apparatus. Widescreen monitor for both NTSC and SVHS, comprising a D / A converter that converts digital signals into analog signals.