KR100464886B1 - Monitor with Input Video signal parallel Processing Device - Google Patents

Abstract

According to the present invention, two video signals, RGB and composite, which are two types of general video signals, can be processed by a single monitor, thereby allowing video signal processing to be used for any video signal without replacing the monitor. A monitor having a device is provided.

The monitor provided with the video input signal parallel processing apparatus includes a vertical synchronization circuit 5 and a vertical deflection circuit 6, a horizontal synchronization circuit 7 and a horizontal deflection / high voltage output circuit 8, and an image amplification circuit. 3) a monitor for displaying an image through a CPT (10) after receiving an image input signal and amplifying it in the image amplification circuit (3). The video processing signal is determined according to the type of video input signal input to the monitor, and the video input signal is discriminated so that a clear screen can be reproduced without loss and distortion of the video signal. A video signal parallel processing circuit 2 for processing an RGB signal so as to receive the RGB video signal and the composite video signal and to amplify the video signal in the video amplification circuit 3; When the signal input to the circuit 2 is a composite video signal, a synchronization separation circuit 4 for extracting and separating the synchronization signal included in the video signal and inputting it to the vertical synchronization circuit 5 and the horizontal synchronization circuit 7. It characterized in that it is configured to include.

Description

Monitor with Input Video Signal Parallel Processing Device

The present invention relates to a monitor having an image input signal parallel processing apparatus, and more particularly, to an apparatus for selecting a processing method according to an image input signal input to a monitor and allowing an image amplifying circuit to amplify it.

Conventional monitors support only one input signal from the red, green, and blue separation signal method and the image composite synchronous signal method. In other words, in the case of a display that emphasizes resolution, the RGB method is used, and in the case of AV, CCTV, etc. displaying a video, a composite signal method is used.

The signal type of a general PC monitor is RGB type (Separate Type) as shown in FIG. 1, and three signals of red, green, and blue are transmitted through each channel and amplified and displayed on the screen. Information is reproduced, and the current monitor's signaling is mostly the case here.

The composite signal method does not send RGB primary color signals as it is, but converts them into luminance signals Y, which are brightness information, and color difference signals I, Q, which are signals of color. The color difference signal is modulated with a color carrier of 3.58 MHz and superimposed on the luminance signal. Originally, it was a signal method adopted as a broadcast method, but it is a signal method that is applied to a monitor that mainly transmits an image due to the simplicity of the signal.

This includes CCTV monitors for monitoring purposes and monitors used in general karaoke equipment. In the case of industrial use, it is not required to display accurate images or data, and in the case of a monitor used in a place where installation convenience is required, a composite video signal type, that is, a composite signal type monitor, is used. Recently, some industrial devices such as game devices output images in RGB to improve image quality, but the output method supports only composite video signals depending on the type and content of the game.

Accordingly, an object of the present invention is to determine a video input signal of a monitor and determine an image processing circuit according to the shape of the video signal so that a clean screen can be reproduced without loss and distortion of the video signal. Provides a monitor equipped with a video input signal parallel processing device that can be used for any video signal without replacing the monitor by allowing two video signals of two types, RGB and composite, to be processed by a single monitor. Its purpose is to.

The present invention is a technology for making a monitor capable of supporting any video signal system with a single monitor as described above, and a technology for supporting two signal systems by adding a circuit capable of processing a composite video signal to an RGB monitor. Parallel processing of RGB and composite video signals.

1 is a block diagram showing the configuration of a general monitor to which an RGB video signal is input;

2 is a block diagram showing a configuration of a general monitor to which a composite video signal is input;

3 is a block diagram showing the configuration of a monitor having a video input signal parallel processing apparatus according to an embodiment of the present invention;

4 is a block diagram showing the configuration of the video input signal parallel processing apparatus of FIG.

<Description of the symbols for the main parts of the drawings>

1: RGB & Composite Video Signal 2: Video Signal Parallel Processing Circuit

3: image amplifier circuit 4: synchronous separation circuit

5: vertical synchronization circuit 6: vertical deflection circuit

7: horizontal synchronous circuit 8: horizontal deflection and high voltage output circuit

9: power supply circuit 10: CPT

In order to achieve the above object, a monitor having an image input signal parallel processing apparatus according to an embodiment of the present invention includes a vertical synchronization circuit for synchronizing a vertical image by matching a frequency of the vertical oscillation circuit with its input vertical synchronization signal. And a vertical deflection circuit, a horizontal synchronization circuit and a horizontal deflection / high voltage output circuit for synchronizing a horizontal image by matching the frequency of the input horizontal synchronization signal with its horizontal oscillation circuit, and an image signal input from the outside into a picture in a CRT. And a video amplifying circuit that amplifies enough to display, and receives a video input signal, amplifies it in a video amplifying circuit, and displays the image through a CPT. Image processing according to the type of image input signal input to the monitor among the RGB image signal method and the composite video signal method Determine the video input signal and select the processing method according to the video input signal method so as to reproduce a clean screen without loss and distortion of the video signal, and accept the RGB video signal and the composite video signal. The video signal parallel processing circuit which processes the RGB signal to be amplified by the signal, and when the signal inputted to the video signal parallel processing circuit is a composite video signal, extracting and separating the sync signal included in the video signal and performing the vertical synchronization. And a synchronizing separation circuit for inputting to the furnace and the horizontal synchronizing circuit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing a configuration of a monitor having a video input signal parallel processing apparatus according to an embodiment of the present invention, and FIG. 4 is an example of a specific configuration of the video input signal parallel processing apparatus of FIG. Shown.

Video signals of general monitors are largely classified into two types. For display-oriented displays, the RGB method is used. For video and AV, CCTV, etc., the composite video signal method is used. In Fig. 3, the RGB & composite video signal 1 refers to these signals.

The video signal parallel processing circuit 2 receives the RGB video signal and the composite video signal, which are two methods of the video signal, and processes the RGB signal so that it can be amplified by a later video amplification circuit. 3) amplifies the video signal input from the outside so that it can be displayed on the CRT as an image.

In the case of the composite video signal system (composite video signal), the synchronous separation circuit 4 refers to a circuit which extracts only the synchronous signal from the synchronous signal together with the video signal. The vertical synchronous circuit 5 Is a circuit for synchronizing a vertical image by matching a frequency of an input vertical synchronization signal with its own vertical oscillation circuit, and the vertical deflection circuit 6 amplifies a signal transmitted from the vertical synchronization circuit 5 by Drive the vertical deflection yoke.

The horizontal synchronizing circuit 7 is a circuit for synchronizing the horizontal image by matching the frequency of the input horizontal synchronizing signal with its horizontal oscillating circuit, and the horizontal deflection and high voltage output circuit 8 is obtained from the horizontal synchronizing circuit 7. Amplifies the transmitted signal to drive the horizontal deflection yoke and provides high pressure to the CRT. The power supply circuit 9 supplies power required for each part of the monitor, and the video signal inputted from the CPT 10 (Color Picture Tube: CRT) is reproduced.

An example of the configuration according to an embodiment of the present invention is that the video amplification circuit 3 selects a processing method according to a video input signal received by receiving two types of RGB video signals and a composite video signal. An image signal parallel processing circuit 2 for processing an RGB signal so as to be amplified is provided.

The signal input to the video signal parallel processing circuit 2 is separated from the sync signal included in the video signal by the sync separation circuit 4 in the case of the composite video signal.

Accordingly, the RGB image signal processed according to the discrimination in the image signal parallel processing circuit 2 is input to the image amplifying circuit 3, and then displayed through the CPT 10 as in the prior art. .

The configuration of the image signal parallel processing circuit 2 described above may be variously modified to achieve the above-described present invention.

In FIG. 4, an example of the video signal parallel processing circuit 2 includes an RGB video signal, a sync signal (R, G, B, S), and a composite video signal, which are input as separate input signals. After passing through the RGB signal decoder and the sync separator, the RGB image signal and the sync signal are output to the RGB output line and the sync signal output line through the switching means, respectively, and the input signal It consists of a signal detector for detection. In this way, the switching means is opened and closed according to the signal detected by the signal detector, so that either one of the RGB video signal and the composite video signal is connected.

According to the configuration and operation of the monitor provided with the video input signal parallel processing apparatus according to the embodiment of the present invention described above, the video input signal of the monitor is discriminated and the image processing circuit is determined according to the type of the video signal. It aims to reproduce a clear picture without loss and distortion, and it is possible to replace two monitors by processing two video signals of two types of general video signals, RGB and composite, into one monitor. It can be used for any video signal without the effect.

Claims (2)

The vertical synchronization circuit 5 and the vertical deflection circuit 6 for synchronizing the vertical image by matching the frequency of the vertical synchronization signal inputted with its vertical oscillation circuit, and the frequency of the input horizontal synchronization signal and its horizontal oscillation circuit. A horizontal synchronization circuit 7 and a horizontal deflection / high voltage output circuit 8 for synchronizing horizontal images by synchronizing them, and an image amplification circuit 3 which amplifies the image signal input from the outside to be displayed on the CRT as an image. In the monitor for receiving and amplifying the image input signal in the image amplification circuit (3), and displays the image through the CPT (10), The RGB video signal method and the composite video signal method, which are two types of video signals, determine the image processing circuit according to the type of the video input signal input to the monitor so that the image can be reproduced without loss and distortion of the video signal. A video signal parallel processing circuit that discriminates an input signal and selects a processing method according to the video input signal method, and processes an RGB signal to receive an RGB video signal and a composite video signal and to amplify the video amplification circuit 3. (2) and when the signal inputted to the video signal parallel processing circuit 2 is a composite video signal, the vertical synchronization circuit 5 and the horizontal synchronization circuit 7 are extracted by separating and separating the synchronization signal included in the video signal. And a video input signal parallel processing apparatus, characterized in that it comprises a synchronous separation circuit (4) for inputting the same. 2. The video signal parallel processing circuit (2) according to claim 1, wherein an RGB video signal, a sync signal (R, G, B, S) and a composite video signal are input separately as input signals, and the composite video signal is RGB. After passing through a signal decoder and a sync separator, the RGB image signal and the sync signal are connected to and output from the RGB output line and the sync signal output line through switching means, respectively. It is configured to include a signal detector (signal detector) for detecting a signal to open or close the switching means in accordance with the signal detected by the signal detector, characterized in that any one of the RGB image signal and composite video signal is connected Monitor with parallel processing of input signal.