KR19980029602A - Image Sensitivity Amplification Device and Method Using Digital Processing - Google Patents

Abstract

The present invention relates to an apparatus and method for amplifying a video sensitivity by moving a digital image, and to amplifying a separate moving picture which can amplify a moving picture moving in a still picture while watching a video in a dark night or a dark screen when watching TV. In order to solve the conventional problem that a viewer cannot accurately distinguish between moving images and still images in a state where there is no device or the TV screen is dark, when the viewer selects the moving image amplification function from a still image by key input, the image processor ( The video signal (CVBS) processed at 300 is demodulated to code data, and the moving picture signal and the still picture signal are separated, respectively, and the gain of the moving picture is amplified from the still picture displayed on the screen of the CRT 400 and input to the image processor 300. A device configured to include a moving picture amplifying device 700 included in an existing TV, and The other image sensitivity provides a amplification method to ambient is dark or the viewer to select the moving image amplifier at a constant level while viewing the video data is TV screen itself displayed on the CRT display in the dark state can be viewed accurately distinguish between a moving image on a still image.

Description

Image Sensitivity Amplification Device and Method Using Digital Processing

The present invention relates to a television receiver (hereinafter referred to as a TV), and more particularly, to accurately move a moving picture from a still picture that is at a standstill without moving while watching an image on a dark night (night) or a dark screen when watching TV. A video sensitivity amplification apparatus using digital processing for receiving a composite video signal (CVBS) to separately classify and amplifying a moving image to a predetermined level by digital processing and inputting the same to a video processor, and an apparatus thereof It is about a method.

In general, a TV for receiving and watching a broadcast signal transmitted from a broadcasting station includes a microcomputer 200 for controlling overall operations of the TV by manipulation of the key input unit 220, and the microcomputer 200 as illustrated in FIG. 1. A memory 240 for storing data to be processed in the < RTI ID = 0.0 > and < / RTI > a tuner 100 for receiving and tuning a broadcast signal of a channel selected by the preset voltage output from the microcomputer 200 from the antenna ANT, and An image processor 300 for processing an image signal of the broadcast signal tuned by the tuner 100, an image amplifier 320 for amplifying the image signal output from the image processor 300, and the image processor 300. A vertical / horizontal synchronization processor 340 for deflecting a vertical synchronization signal and a horizontal synchronization signal of an image signal displayed on the screen of the CRT 400 by the vertical / horizontal synchronization signal processed by the output signal; Being A CRT 400 for receiving a phase signal and displaying the same on a screen; a voice processor 500 for processing a voice signal of a broadcast signal received by the tuner 100; and a voice signal processed by the voice processor 500. A voice amplifier 520 amplifies at a predetermined level, and a speaker 600 and 620 for receiving and outputting a voice signal amplified by the voice amplifier 520.

Referring to the general TV configured as described above, when the viewer operates the key input unit 220 to select a broadcast channel to be watched, the microcomputer 200 recognizes this and generates a preset voltage corresponding to the tuner 100. Is authorized. Therefore, the tuner 100 tunes the broadcast signal of the broadcast channel selected by the tuner voltage generated by the microcomputer 200 through the antenna ANT to the broadcast signal received from the free space, and the image processor 300 and the audio processor ( 500, a broadcast signal is input. Thus, the image processor 300 inputs the processed image signal to the image amplifier 320 by processing the image signal from the broadcast signal tuned by the tuner 100 by the control signal of the microcomputer 200. That is, the image amplifier 320 amplifies the video signal to a level that can be displayed on the screen of the CRT 400, is supplied to the CRT 400, and eventually the video signal transmitted from the broadcasting station to the free space is displayed on the screen of the CRT 400. It is displayed so that viewers can watch the video.

Here, the vertical / horizontal synchronization processor 340 deflects the image signal and the character broadcast signal displayed on the screen of the CRT 400 in the vertical direction and the horizontal direction based on the vertical synchronization signal and the horizontal synchronization signal processed by the image processor 300. Done.

In addition, the voice processor 500 processes the voice signal from the broadcast signal that is tuned from the tuner 100 and inputs the processed voice signal into the voice amplifier 520. Accordingly, the voice amplifier 520 amplifies the voice signal processed by the voice processor 500 to a predetermined level and outputs the same to the speakers 600 and 620 so that the viewer can listen to the voice.

However, the TV does not have a separate moving picture amplifying device that can amplify moving pictures moving in the still picture while watching a video in a dark night (night) or a dark screen when watching TV, and the surrounding or TV screen is dark. In this case, a problem arises in that a viewer cannot accurately distinguish between a moving picture and a still picture.

In the present invention, in order to solve the above-mentioned shortcomings, a viewer selects a moving picture and amplifies it to a certain level while watching a video displayed on a CRT screen in a dark surrounding or a TV screen itself is dark for the purpose. It is to be able to accurately distinguish and watch.

According to the present invention for achieving the above object, when a viewer selects a moving picture amplification function from a still picture by a key input, the composite video signal (CVBS) processed by the video processor 300 is demodulated to code data to generate a moving picture signal. And a moving picture amplifying device 700 which separates the still picture signal from each other and amplifies the gain of the moving picture from the still picture displayed on the screen of the CRT 400, and inputs it to the image processor 300, and displays the moving picture from the still picture while watching TV. A process of determining whether to amplify, amplifying a moving image from a still image, receiving and demodulating a composite video signal as an analog signal, converting it into a digital signal, and encoding a digitalized composite video signal using a microcomputer control signal. The process of separating the moving picture signal from the still picture signal, and the separated moving picture signal and the still picture signal Restoring the analog signal, amplifying the video gain of the analog signal restored by the analog signal to a level set by the viewer, synthesizing the amplified video signal and the still image signal restored by the analog signal, It is a well-known feature to provide an image sensitivity amplification method in which a viewer outputs an amplified moving picture from the synthesized still picture so that the viewer can watch the moving picture accurately from the still picture.

1 is a block diagram schematically showing a typical television receiver.

Fig. 2 is a block diagram showing a television receiver including a video sensitivity amplifying apparatus of a moving image by digital processing according to the present invention.

3 is a flowchart showing an operation process of a television receiver including an image sensitivity amplifying apparatus of a moving image by digital processing according to the present invention;

Explanation of symbols on the main parts of the drawings

100: tuner 200: micom

220: key input unit 240: memory

300: Video Processor 320: Image Amplifier

340: vertical / horizontal synchronous processing unit 400: CRT (Cathode-Ray Tube)

500: Sound Processor 520: Voice Amplifier

600,620: Speaker 700: Video Amplifier

710: CVBS demodulator 712: A / D conversion unit

714: encoding unit 716: moving image separation unit

718: Still image separation unit 720,722: D / A conversion unit

724: amplification unit 726: synthesis unit

Hereinafter, the configuration according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 2, the microcomputer 200 controls the overall operation of the TV by the operation of the key input unit 220 and the A memory 240 for storing data to be processed in the microcomputer 200 and a tuner 100 for receiving and tuning a broadcast signal of a channel selected by the tuning voltage output from the microcomputer 200 from the antenna ANT. And an image processor 300 for processing an image signal of the broadcast signal tuned by the tuner 100, an image amplifier 320 for amplifying the image signal output from the image processor 300, and the image processor. A vertical / horizontal synchronization processor 340 for deflecting a vertical synchronization signal and a horizontal synchronization signal of the image signal displayed on the screen of the CRT 400 by the vertical / horizontal synchronization signal processed by the 300; and the image amplifier 320 Output from A CRT 400 for receiving an image signal and displaying the same on a screen; a voice processor 500 for processing a voice signal of a broadcast signal received by the tuner 100; and a voice signal processed by the voice processor 500. In a TV having a voice amplifier 520 for amplifying at a predetermined level and a speaker (600) 620 for receiving and outputting a voice signal received by the voice signal amplified by the voice amplifier (520). When the viewer selects a moving image amplification function from a still image by key input, the composite video signal CVBS processed by the image processor 300 is demodulated to code data to separate the moving image and the still image, respectively, on the screen of the CRT 400. The moving picture amplifying apparatus 700 further amplifies the gain of the moving picture from the displayed still picture and inputs it to the image processor 300.

The moving picture amplifying apparatus 700 includes a CVBS demodulator 710 for receiving and decoding a composite video signal CVBS processed by the image processor 300 as an analog signal, and a demodulated composite video signal CVBS as a digital signal. A / D converter 712 to convert, a coder 714 to code data of a composite video signal (CVBS) converted into a digital signal, and a moving picture signal moving from data coded by the control signal of the microcomputer 200 A video separation unit 716 for separating the video signal, a D / A converter 720 for restoring the separated video signal to an analog signal, and amplifying the video gain according to a viewer's key input. An amplifying unit 724, a still picture separating unit 718 for separating a moving picture signal moving from the data coded by the encoding unit 716, and a D / A converter for restoring the separated still picture signal to an analog signal ( 722) and the above symptoms And a synthesizer 726 for synthesizing the moving image signal amplified by the width portion 724 and the still image signal converted by the D / A converter 722 into a digital signal and inputting the synthesized image signal to the image processor 300.

3 is a flowchart illustrating an operation of a television receiver including an image sensitivity amplifier of a moving image by digital processing according to an embodiment of the present invention, which includes checking whether the TV is on (S301) and watching the TV when the TV is on. Step (S302), determining whether to amplify the moving picture from the still picture while watching TV (S303), and if there is no key input as a result of the determination, if the normal picture (still picture) is not amplified from the still picture In step S313, if there is a key input to amplify the moving image from the still image, receiving and demodulating the composite video signal CVBS as an analog signal (S304), and digital signal of the demodulated composite video signal CVBS. A step S305 of converting the signal to a digital video signal; and a step S306 of encoding the composite video signal CVBS converted to a digital signal; and a moving picture signal from the still picture signal of the coded composite video signal CVBS. Separating (S307), restoring the separated video signal to an analog signal (S308), amplifying the image gain of the video signal restored to the analog signal (S309), and coded in step S306 Separating the still picture of the composite video signal CVBS (S307-1), restoring the separated still picture to an analog signal (S308-1), and amplifying the moving picture signal and the step (S309). A step S310 of synthesizing the reconstructed still picture signal in step S308-1, a step of outputting a moving picture amplified from the synthesized still picture (S311), and determining whether to end the amplification of the moving picture in the still picture (S312) If it is determined that the moving picture amplification is to be continued in the still picture, the process returns to step S304, and when the amplifying the moving picture is finished in the still picture, the normal video is viewed (S313).

Looking at the operating state of the present invention made as described above, when the viewer operates the key input unit 220 to select the broadcast channel to be watched in the state of power supply (S301), the microcomputer 200 that recognizes it corresponds to this A preset voltage is generated and applied to the tuner 100. Therefore, the tuner 100 tunes the broadcast signal of the broadcast channel selected by the tuner voltage generated by the microcomputer 200 through the antenna ANT to the broadcast signal received from the free space, and the image processor 300 and the audio processor ( 500, a broadcast signal is input. Thus, the image processor 300 inputs the processed image signal to the image amplifier 320 by processing the image signal from the broadcast signal tuned by the tuner 100 by the control signal of the microcomputer 200. That is, the image amplifier 320 amplifies the image signal to a level that can be displayed on the screen of the CRT 400, is supplied to the CRT 400, and finally the image signal transmitted from the broadcasting station to the free space on the screen of the CRT 400 ( Since a moving picture and a still picture are displayed), the viewer views the video displayed on the screen of the CRT 400 (S302).

While watching the TV, the microcomputer 200 determines whether to amplify the moving image from the still image output on the screen of the CRT 400 (S303), and if there is no separate key input for amplifying the still image from the key input unit 220, the microcomputer 200 continues. Thus, the general video output on the screen of the CRT 400, that is, the video in which the moving picture is not amplified in the still picture can be viewed (S313). Meanwhile, the microcomputer 200 determines whether to amplify the moving image from the still image output on the screen of the CRT 400 (S303), and if there is a separate key input for amplifying the still image from the key input unit 220, the moving image amplifying apparatus ( The CVBS demodulator 710 of 700 receives the composite video signal CVBS processed by the image processor 300 as an analog signal, decodes the signal S304, and decodes the composite video signal decoded by the A / D converter 712. (CVBS) is converted into a digital signal (S305). The composite video signal CVBS digitalized by the A / D converter 712 is encoded (S306) via the coder 714. The composite image signal CVBS coded by the encoding unit 714 separates a moving image signal from a still image of the composite image signal CVBS coded by the moving image separator 716 by a control signal input from the microcomputer 200 ( In operation S307, the moving image signal is restored to the analog signal through the D / A converter 720, and inputted to the amplifier 724. Therefore, the amplifying unit 724 receives the amplification level input by the viewer by operating the key input unit 220 from the microcomputer 200 to amplify the image gain of the moving image signal (S309) and input it to the combining unit 726.

Here, the amplifier 724 may use an amplifying transistor and a variable resistor for adjusting the amplification gain.

In addition, the composite image signal CVBS coded by the encoding unit 714 separates only the still image signal of the composite image signal CVBS coded by the still image separator 716 by a control signal input from the microcomputer 200. In operation S307-1, the still image signal is restored to an analog signal through the D / A converter 722 (S308-1) and input to the synthesis unit 726.

Therefore, the synthesizer 726 synthesizes the moving picture signal amplified by the amplifier 724 and the still picture signal converted into the digital signal by the D / A converter 722 (S310), and then the image processor 300. Type in Thus, the image processor 300 processes the still image signal input from the combining unit 726 and the moving image signal amplified from the still image by the control signal of the microcomputer 200, and passes the CRT 400 through the image amplifying unit 320. The image amplified from the still image is output to the screen (S311) so that the viewer can accurately view the moving image amplified from the still image. After the image amplified from the still image is output and the viewer views the amplified moving image, the microcomputer 200 determines whether to end the amplification of the moving image from the still image output on the screen of the CRT 400 (S312). As a result of the determination, if there is no key input for terminating the amplification of the moving image from the still image in the key input unit 2209, the CVBS demodulation unit 710 of the moving image amplifying apparatus 700 is processed by the image processor 300 (CVBS). Is returned to the process of receiving and decoding the analog signal, and the process is continuously performed in the above-described order. On the other hand, the microcomputer 200 determines whether to end the amplification of the moving image in the still image output on the screen of the CRT 400 (S312), and if there is a key input for terminating the amplification of the moving image in the still image by the key input unit 220, the CRT ( In operation S313, a normal video output on the screen, that is, a video in which a moving picture is not amplified in a still picture may be viewed.

As described above, the present invention has the effect of allowing a viewer to select and amplify a moving picture to a certain level so that the moving picture can be accurately classified and viewed in a still picture while watching an image displayed on a CRT screen in a dark or dark screen. Have

As described in the claims, the present invention has been described with respect to an image sensitivity amplifying apparatus and method thereof by digital processing. However, the present invention is not limited thereto, and various applications and modifications can be made by those skilled in the art. something to do.

Claims (3)

A microcomputer 200 for controlling TV operations, a memory 240 for storing data, a tuner 100 for receiving and tuning broadcast signals of a channel selected by a preset voltage from an antenna, and an image processor for processing video signals. 300, an image amplifying unit 320 for amplifying a video signal, a CRT 400 for displaying an image, an audio processor 500 for processing an audio signal, and amplifying the processed audio signal to a predetermined level. In a TV equipped with a voice amplifying unit 520 for outputting a voice through the speakers 600 and 620, the composite is processed by the image processor 300 when the viewer selects a moving picture amplification function from a still picture by key input. The moving picture amplification apparatus 70 which demodulates the video signal CVBS into code data, separates the moving picture signal and the still picture signal, and amplifies the gain of the moving picture from the still picture displayed on the CRT 400 screen, and inputs it to the image processor 300. And an image sensitivity amplifying device for moving image by digital processing, characterized by comprising 0). The apparatus of claim 1, wherein the moving picture amplifying apparatus 700 converts the demodulated composite video signal into a digital signal, and a CVBS demodulator 710 which receives and decodes the composite video signal processed by the image processor 300 as an analog signal. A / D converter 712, a coder 714 for code data of a composite video signal converted into a digital signal, and video separation for separating a video signal from data coded by a control signal of the microcomputer 200. A unit 716, a D / A converter 720 for restoring the separated video signal to an analog signal, and an amplifier 724 for amplifying the video gain according to a viewer's key input of the video signal restored to the analog signal. And a still picture separation unit 718 for separating a moving picture signal moving from the data coded by the encoding unit 716, and a D / A converter 722 for restoring the separated still picture signal to an analog signal. Amplification unit 724 And a synthesizer 726 for synthesizing the amplified moving picture signal and the still picture signal converted by the D / A converter 722 into the digital signal and inputting the same to the image processor 300. Video sensitivity amplifier. A method of amplifying a moving picture from a still picture, comprising: determining whether to amplify a moving picture from a still picture while watching TV, and converting a composite video signal as an analog signal and demodulating the converted digital signal if the moving picture is amplified from a still picture. And encoding the digitized composite video signal to separate the moving picture signal from the still picture signal by the control signal of the microcomputer, restoring the separated moving picture signal and the still picture signal to the analog signal, and restoring the analog signal. Amplifying the video gain of the moving picture signal to a level set by the viewer, synthesizing the amplified moving picture signal and the still picture signal restored to the analog signal, and outputting the amplified moving picture from the synthesized still picture to the viewer In order to watch movies correctly on the screen, A method for amplifying video sensitivity by using digital processing.