KR100203921B1 - Image sensibility amplfier and the method for dynamic picture image of digital processing - Google Patents

Abstract

[0001] The present invention relates to an apparatus and method for amplifying a moving image by a digital processing, and more particularly, to an apparatus and method for amplifying moving image of a moving image by digital processing, When the viewer selects the moving image amplification function on the still image by key input in order to solve the conventional problem that the viewer can not correctly watch the moving image and the still image separately in the surroundings or in the dark state of the TV screen, 300 and demultiplexes the composite video signal CVBS processed by the demultiplexer 300 to separate the moving image signal and the still image signal to amplify the gain of the moving image on the still image displayed on the screen of the CRT 400 and input to the image processor 300 An apparatus in which a moving picture amplifying apparatus 700 is included in an existing TV, 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 Apparatus and Method for Moving Pictures by Digital Processing

The present invention relates to a television receiver (hereinafter referred to as TV), and more particularly, to a television receiver (hereinafter referred to as a TV) that accurately displays moving pictures on a still image in a stationary state A moving picture image sensitivity amplifying device for receiving a composite video signal (CVBS) to receive a composite video signal (CVBS), amplifying the moving picture to a predetermined level by digital processing, ≪ / RTI >

As shown in FIG. 1, a TV for receiving and watching a broadcasting signal transmitted from a broadcasting station includes a microcomputer 200 for controlling the overall operation of the TV by the operation of the key input unit 220, A tuner 100 for receiving and tuning a broadcast signal of a channel selected by the channel selection voltage outputted from the microcomputer 200 from an antenna ANT; An image processor 300 for processing a video signal of a broadcast signal tuned in the tuner 100, an image amplifier 320 for amplifying a video signal output from the image processor 300, A vertical / horizontal synchronization processing unit 340 for deflecting a vertical synchronizing signal and a horizontal synchronizing signal of a video signal displayed on the screen of the CRT 400 according to a vertical / horizontal synchronizing signal processed by the vertical synchronizing signal processing unit 320, Being A voice processor 500 for processing a voice signal of a broadcast signal received by the tuner 100 and a voice processor 500 for processing the voice signal processed by the voice processor 500 And a speaker 600 and 620 for receiving a voice signal amplified by the voice amplifying unit 520 and outputting the voice signal so that a viewer can listen to the voice.

When a viewer operates the key input unit 220 to select a broadcast channel to be viewed, the microcomputer 200 recognizing the generated broadcast channel generates a channel selection voltage corresponding to the selected channel and outputs the selected channel selection voltage to the tuner 100 . Accordingly, the tuner 100 tunes a broadcast signal of a broadcast channel selected by the channel selection voltage generated by the microcomputer 200 to a broadcast signal received from a free space through an antenna ANT, 500, respectively. The image processor 300 processes the video signal in the broadcast signal input from the tuner 100 according to the control signal of the microcomputer 200 and inputs the processed video signal to the video amplifier 320. That is, the image amplifying unit 320 amplifies the image signal to a level that can be displayed on the screen of the CRT 400, and supplies the amplified image signal to the CRT 400. As a result, So that the viewer can view the image.

Here, the vertical / horizontal synchronizing processor 340 deflects the video signal and the text broadcasting signal displayed on the CRT 400 screen in the vertical and horizontal directions based on the vertical synchronizing signal and the horizontal synchronizing signal processed by the image processor 300, .

Also, the audio processor 500 processes the audio signal in the broadcast signal input from the tuner 100, and inputs the processed audio signal to the audio amplifier 520. Accordingly, the voice amplifying unit 520 amplifies the voice signal processed by the voice processor 500 to a predetermined level, and outputs the amplified voice signal to the speakers 600 and 620 so that the viewer can listen to the voice.

However, the above-mentioned TV does not have a separate moving picture amplifying device that can amplify a moving picture moving in still image inherent during watching a video in a dark night (night) or dark screen at the time of watching TV, There has been a problem that the viewer can not correctly watch the moving image and the still image separately.

In order to solve the above-mentioned drawbacks, the present invention aims at eliminating the above-mentioned drawbacks. For this purpose, a viewer selects a moving image and amplifies the moving image at a predetermined level during watching the image displayed on the CRT screen in a dark environment or in a dark state, So that the user can view the contents accurately.

According to an aspect of the present invention, there is provided a video signal processing apparatus for demodulating a composite video signal (CVBS) processed by a video processor (300) And a moving image amplifying apparatus 700 for amplifying the gain of the moving image on the still image displayed on the screen of the CRT 400 and inputting the amplified gain to the image processor 300, Amplifying a moving image on a still image, and converting the composite video signal into a digital signal by receiving the analog video signal by analog signal, and encoding the digital composite video signal, Separating the moving image signal from the still image signal, and separating the separated moving image signal and the still image signal A step of reconstructing the image signal into a log signal, amplifying the image gain of the moving image signal reconstructed by the analog signal to a level set by the viewer, synthesizing the amplified moving image signal and the restored still image signal with the analog signal, And a process of outputting the amplified moving image on the synthesized still image so that the viewer can accurately watch the moving image on the still image.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram schematically showing a general television receiver; Fig.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a video signal processing apparatus and a video signal processing method.

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

Description of the Related Art [0002]

100: Tuner 200: Microcomputer

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: moving picture amplifying device

710: CVBS demodulation unit 712: A / D conversion unit

714: Encoding unit 716: Moving picture separating unit

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

724: amplification unit 726: synthesis unit

As shown in FIG. 2, the microcomputer 200 according to an exemplary embodiment of the present invention includes a microcomputer 200 for controlling the operation of a TV through an operation of a key input unit 220, A memory 240 for storing data to be processed by the microcomputer 200 and a tuner 100 for receiving and tuning a broadcast signal of a channel selected by the channel selection voltage outputted from the microcomputer 200 from an antenna ANT, An image processor 300 for processing a video signal of a broadcast signal tuned in the tuner 100, an image amplifier 320 for amplifying a video signal output from the image processor 300, A vertical / horizontal synchronization processing unit 340 for deflecting a vertical synchronizing signal and a horizontal synchronizing signal of a video signal displayed on the screen of the CRT 400 according to a vertical / horizontal synchronizing signal processed by the image processing unit 300, ) A CRT 400 for receiving a video signal and displaying the video signal on a screen, a voice processor 500 for processing a voice signal of a broadcast signal received by the tuner 100, And a speaker (600) (620) for receiving a voice signal amplified by the voice amplification unit (520) and allowing the viewer to listen to the voice, . When the viewer selects the moving image amplification function on the still image by key input, the composite video signal (CVBS) processed by the image processor 300 is demodulated and code data is formed to separate the moving image and the still image, And a moving image amplifying apparatus 700 for amplifying the gain of the moving image on the displayed still image and inputting the amplified gain 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 demodulating unit 710 for demodulating the demodulated composite video signal CVBS into a digital signal A coding unit 714 for code-converting the composite video signal CVBS converted into a digital signal into a digital video signal CVBS, a moving picture signal moving from the data coded by the control signal of the microcomputer 200, A D / A converter 720 for recovering the separated moving image signal into an analog signal, a moving image demultiplexing unit 716 for demultiplexing the moving image signal restored by the analog signal, An amplifying unit 724, a still image separating unit 718 for separating the moving image signal moving in the data coded by the encoding unit 716, a D / A converting unit (for converting the separated still image signal into an analogue signal 722, And a synthesis unit 726 for synthesizing the moving image signal amplified by the width unit 724 and the still image signal converted from the digital signal by the D / A converter 722 into the image processor 300.

FIG. 3 is a flowchart illustrating an operation procedure of a television receiver including a moving picture image sensitivity amplifying apparatus according to the present invention. Referring to FIG. 3, a step S301 of checking whether a TV is turned on, (S303) of determining whether the moving image is to be amplified on the still image during the TV viewing (S303); and watching a general image (still image) if the moving image is not amplified on the still image due to no input of the determined result A step S304 of receiving and demodulating the composite video signal CVBS as an analog signal if the key input is to be performed and the moving picture is to be amplified on a still image in the step S313; A step S306 of encoding the composite video signal CVBS converted into a digital signal, a step S306 of coding the composite video signal CVBS into a digital video signal CVBS, A step S307 of restoring the separated moving image signal into an analog signal S308, a step S309 of amplifying the image gain of the moving image signal restored to the analog signal, A step S307-1 of separating the still picture of the composite video signal CVBS, a step S308-1 of restoring the separated still picture into an analog signal, a step S308-1 of extracting the moving picture signal amplified in the step S309, (S312) of synthesizing the restored still image signal in step S308-1, outputting the moving image amplified on the synthesized still image, S311 (S312) judging whether to end the moving image amplification on the still image, And if it is determined that the moving image amplification is to be continued on the still image, the process returns to the step S304, and if the moving image amplification is to be terminated on the still image, the normal image is viewed (S313).

When the viewer operates the key input unit 220 to select a broadcasting channel to be watched while the power is supplied (S301), the microcomputer 200 recognizing the selected broadcasting channel responds thereto And applies the selected channel selection voltage to the tuner 100. [ Accordingly, the tuner 100 tunes a broadcast signal of a broadcast channel selected by the channel selection voltage generated by the microcomputer 200 to a broadcast signal received from a free space through an antenna ANT, 500, respectively. The image processor 300 processes the video signal in the broadcast signal input from the tuner 100 according to the control signal of the microcomputer 200 and inputs the processed video signal to the video amplifier 320. That is, the image amplifying unit 320 amplifies the image signal up to a level that can be displayed on the screen of the CRT 400, and supplies the amplified image signal to the CRT 400. As a result, A moving picture and a still image) is displayed on the screen of the CRT 400, the viewer watches the image displayed on the screen of the CRT 400 (S302).

During the watching of the TV, the microcomputer 200 determines whether to amplify the moving image on the still image outputted on the screen of the CRT 400 (S303). If there is no key input for amplifying the still image in the key input unit 220 (S313) the normal image output on the screen of the CRT 400, that is, the image in which the moving image is not amplified on the still image. On the other hand, the microcomputer 200 determines whether to amplify the moving image on the still image output on the screen of the CRT 400 in step S303. If the key input unit 220 has a separate key input for amplifying the still image, The CVBS demodulator 710 of the image processing unit 700 receives the composite video signal CVBS processed by the image processor 300 as an analog signal and decodes the synthesized video signal CVBS in operation S304, (CVBS) into a digital signal (S305). The composite video signal CVBS digitized in the A / D conversion unit 712 is coded (S306) via a coding unit 714. [ The composite video signal CVBS coded by the coding unit 714 is generated by separating a moving image signal on the still image of the composite video signal CVBS coded by the moving picture separation unit 716 by a control signal input from the microcomputer 200 (S307), restores the moving image signal to the analog signal through the D / A converter 720 (S308), and inputs the analog signal to the amplifying unit 724. Accordingly, the amplifying unit 724 amplifies the image gain of the moving image signal (S309) by inputting the amplification level inputted by the viewer operating the key input unit 220, and inputs the amplified image gain to the combining unit 726. [

The amplifying unit 724 may use an amplifying transistor and a variable resistor for adjusting the amplification gain.

The composite video signal CVBS coded by the encoding unit 714 is separated from the still picture signal of the composite video signal CVBS coded by the still picture separation unit 716 by a control signal input from the microcomputer 200 (S307-1), restores the still image signal to the analog signal through the D / A conversion unit 722 (S308-1), and inputs it to the synthesis unit 726. [

Accordingly, the combining unit 726 combines the moving image signal amplified and input by the amplifying unit 724 and the still image signal converted into the digital signal from the D / A converting unit 722 (S310) . The image processor 300 processes the still image signal input from the combining unit 726 and the moving image signal amplified on the still image by the control signal of the microcomputer 200 and outputs the processed signal to the CRT 400 via the image amplifying unit 320. [ An image in which the moving image is amplified on the still image is outputted on the screen (S311), so that the viewer can accurately view the moving image amplified on the still image. After the moving image is amplified on the still image and the viewer views the amplified moving image, the microcomputer 200 determines whether to stop the moving image amplification on the still image outputted on the screen of the CRT 400 (S312). The CVBS demodulation unit 710 of the moving picture amplification apparatus 700 outputs the composite video signal CVBS processed by the image processor 300 without the key input for terminating the video amplification on the still image by the determined result input unit 2209. [ To an analog signal, and returns to the decoding process. On the other hand, the microcomputer 200 determines whether to end the moving image amplification on the still image output on the screen of the CRT 400 (S312). If the key input unit 220 has a key input for terminating the moving image amplification in the still image, 400), that is, an image in which the moving image is not amplified on the still image (S313).

As described above, according to the present invention, a viewer can select a moving image while watching an image displayed on a CRT screen while the surroundings are dark or the TV screen itself is in a dark state, amplify the moving image to a certain level, I have.

Although the present invention has been described with respect to an apparatus and method for amplifying a video image by digital processing as described in the claims, 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 tuner 100 for receiving and tuning a broadcast signal of a channel selected by the tuning voltage from an antenna, a video processor 200 for processing the video signal, a microcomputer 200 for controlling the operation of the TV, a memory 240 for storing data, A CRT 400 for displaying an image, a sound processor 500 for processing a sound signal, and a control unit 300 for amplifying the processed sound signal to a predetermined level When a viewer selects a moving image amplifying function on a still image by key input in a TV having a voice amplifying unit 520 for outputting voice through the speakers 600 and 620, A moving image amplifying device 70 for demodulating the video signal CVBS to generate code data to separate the moving image signal and the still image signal to amplify the gain of the moving image on the still image displayed on the screen of the CRT 400 and input the amplified gain to the image processor 300 0) of the video signal. The moving picture amplifying apparatus (700) according to claim 1, wherein the moving picture amplifying apparatus (700) comprises a CVBS demodulating unit (710) for receiving and decoding a composite video signal processed by the image processor (300) as an analog signal, a demodulating unit A coding unit 714 for coding the composite video signal converted into a digital signal into a digital form, a moving picture separation unit 714 for separating the moving picture signal from the data coded by the control signal of the microcomputer 200, A D / A converter 720 for reconstructing the separated moving picture signal into an analog signal, an amplifying unit 724 for amplifying the moving picture signal restored by the analog signal according to a key input of the viewer, A still image separating unit 718 for separating the moving image signal moving in the coded data in the coding unit 716, a D / A converting unit 722 for restoring the separated still image signal into an analog signal, In the amplification unit 724 And a synthesis unit (726) for synthesizing the amplified moving image signal and the still image signal converted from the D / A conversion unit (722) into a digital signal and inputting the synthesized image signal to the image processor (300) Of the video signal. A method of amplifying a moving image on a still image, the method comprising the steps of: determining whether to amplify a moving image on a still image during a TV viewing; and receiving a composite video signal as an analog signal and demodulating and converting the composite video signal into a digital signal Separating the moving image signal from the still image signal by the control signal of the microcomputer by coding the digitized composite image signal, restoring the separated moving image signal and the still image signal into an analog signal, A step of amplifying the image gain of the received moving image signal to a level set by the viewer, a step of synthesizing the amplified moving image signal and the restored still image signal by the analog signal, and a step of outputting the moving image amplified on the combined still image, The process of viewing the moving picture on the screen Image Sensitivity Amplification Method for Moving Images by Digital Processing.