KR19980029620A - TV specific screen magnification device using zoom function and its method - Google Patents

Abstract

The present invention relates to an apparatus and method for enlarging a TV-specific screen using a zoom function, and does not have a separate function for selecting and enlarging and viewing a specific image of a screen. In order to solve the problem, when the viewer selects a function of enlarging a specific image of the screen to the microcomputer 200 through the key input unit 220, the selected specific image is received at the level set by the zoom function under the control signal of the microcomputer 200. The device is configured to include a specific screen magnification device 700 that is enlarged and synthesized with CVBS to be included in an existing TV, and a specific screen magnification method is provided so that the viewer sets a specific image and size of the screen through a key input unit to the microcomputer. When inputting, the specific screen magnifier is enlarged according to the control signal input from the microcomputer, and the viewer enlarges the specific video and size. You can watch the video accurately.

Description

TV specific screen magnification device using zoom function and its method

The present invention relates to a television receiver (hereinafter referred to as a TV), and more particularly, a TV-specific screen magnification apparatus using a zoom function for selecting a specific image on a TV screen and enlarging and viewing an image of a specific screen accurately by a zoom function. And to a method thereof.

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. Accordingly, 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 tune the broadcast signal received from the free space to the image processor 300 and the audio processor ( 500, a broadcast signal is input. Thus, the image processor 300 processes the image signal from the broadcast signal tuned by the tuner 100 and processes the image signal by the control signal of the microcomputer 200 and inputs the image signal to the image amplifier 320. 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. As it is displayed, viewers watch the video.

Here, the vertical / horizontal synchronization processor 340 deflects the image 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.

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 audio signal to the speakers 600 and 620 so that the viewer can listen to the voice.

However, the TV does not have a separate function of selecting and enlarging a specific image of a screen, so that a viewer may not select a specific screen and may not watch correctly.

In the present invention, to solve the above-mentioned shortcomings, for the purpose, when the viewer selects a specific image of the screen through the key input unit, to enlarge the selected specific image by the zoom function so that the specific screen can be viewed accurately It is in a ship.

According to the present invention for achieving the above object, when the viewer selects a function of enlarging a specific image of the screen to the microcomputer 200 through the key input unit 220, the specific signal selected by receiving the control signal of the microcomputer 200 A device configured to include a specific screen magnification device 700 for synthesizing with CVBS by enlarging an image to a level set by a zoom function to be included in an existing TV, and determining whether a specific image magnification function is on while watching TV, and a key. If the specific image function is turned on, the specific image size is set to extend the specific image to the set size, the process of storing the digitalized CVBS by demodulating the received CVBS after the image signal is processed, and the microcomputer 200. Amplifying the CVBS by reading the frames sequentially read in the memory by the control signal of the amplified CVBS, synthesizing the amplified CVBS and the extended specific video signal, and Made in the order of the process of viewing a particular video expanded in the call is not a feature to provide a specified enlargement method.

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

2 is a block diagram showing a television receiver including a specific screen magnification apparatus using a zoom (Zoom) function according to the present invention.

3 is a flowchart illustrating an operation process of a television receiver including a specific screen magnification apparatus using a zoom function 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: Scramble Device

710: command reception and control unit 712: blank expansion unit

714: CVBS demodulation unit 716: A / D conversion unit

718: memory unit 720: zoom level storage unit

722: Data Slice Section 724: Amplifier Section

726: synthesis unit

Hereinafter, a configuration according to an embodiment of the present invention will be described with reference to FIG. 2. The microcomputer 200 generally controls the operation of the TV by the operation of the key input unit 220 and the microcomputer 200 to be processed. A memory 240 for storing data, a tuner 100 receiving and tuning a broadcast signal of a channel selected by the tuning voltage output from the microcomputer 200 from the antenna ANT, and the tuner 100 An image processor 300 for processing an image signal of a tuned broadcast signal, an image amplifier 320 for amplifying an image signal output from the image processor 300, and a vertical / processed image in the image processor 300; The vertical / horizontal synchronization processor 340 for biasing the horizontal synchronizing signal and the vertical synchronizing signal of the image signal displayed on the screen of the CRT 400 by the horizontal synchronizing signal, and the image signal output from the image amplifying unit 320. Take and display on screen The CRT 400, a voice processor 500 for processing a voice signal of the broadcast signal received by the tuner 100, and a voice amplifier for amplifying the voice signal processed by the voice processor 500 to a predetermined level. 520 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, the viewer is the key input unit 220 When a function of enlarging a specific image of the screen to the microcomputer 200 is selected, the microcomputer 200 receives a control signal of the microcomputer 200 and enlarges the selected specific image to a level set by the zoom function to synthesize the composite video signal (CVBS). The specific screen magnifier 700 is configured to be further included.

If there is a key input for realizing a zoom function, the specific screen magnification device 700 receives a command signal and a control signal of the microcomputer 200 through the control unit 710 to receive a video signal of a specific screen according to the level selected by the viewer. A blank expansion unit 712 for expanding, a CVBS demodulation unit 714 for receiving and demodulating a composite video signal CVBS processed by the image processor 300 as an analog signal, and a composite video signal CVBS of the demodulated analog signal ) A / D converter 716 converts the digital signal into a digital signal, a memory unit 718 sequentially storing the digitalized composite video signal CVBS, and data exchanged with the memory unit 718 to obtain a specific image. The composite image signal stored in the memory unit 718 by the zoom level storage unit 720 for storing the data of the standard zoom size to be enlarged and the control signal of the microcomputer 200 received through the command reception and control unit 710 ( CVBS) to read the frame A data slice unit 722 for checking and encoding, an amplifier 724 for amplifying the gain of the frame-checked coded composite video signal CVBS, and a composite video signal (CVBS) amplified by the amplifier 724 And a synthesis unit 726 for synthesizing the video signal of the specific screen extended by the blank expansion unit 712 and inputting it to the image processor 300.

3 is a flowchart showing the overall operation of the present invention, a step (S301) of checking whether the TV is on, a step of watching a TV when the TV is on (S302), and a specific image magnification function are turned on during TV viewing; If it is determined whether to apply (S303), and if there is no key input as a result of the determination, and viewing the normal video (S314) when the specific video magnification function is off, and if there is a key input, the specific video function is on. Setting a specific image size (S304), expanding a specific image to a set size (S305), demodulating a received composite video signal (CVBS) (S306), and demodulating the composite video signal (CVBS) Step S307 of converting the digital signal into a digital signal, storing the digitalized composite video signal CVBS (S308), checking the frame by reading the stored composite video signal CVBS (S309), and To amplify the checked composite video signal (CVBS). A system (S310), synthesizing the amplified composite video signal (CVBS) and the extended specific video signal (S311), watching the extended specific video from the video signal (S312), and a specific video magnification function. Determining whether it is off (S313), and if there is no key input as a result of the determination, returns to step S304 when the specific image magnification function is on, and if the specific image magnification function is off due to key input, the normal image is watched. It is shown that step S314 is performed.

Looking at the operating state of the present invention made as described above, when the viewer selects a broadcast channel to watch by operating the key input unit 220 in the state that the power is applied (S301), the microcomputer (Recognized) In step 200, a corresponding tuning voltage is generated and applied to the tuner 100. Accordingly, 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 tune the broadcast signal received from the free space to 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. Since it is displayed, the viewer watches the image (S302).

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 audio signal to the speakers 600 and 620 so that the viewer can listen to the voice.

While watching the TV, the microcomputer 200 determines whether the specific video magnification function is turned on (S303) and there is no separate key input for enlarging the specific video in the key input unit 220. In operation 200, the image signal processed by the image processor 300 is displayed on the screen of the CRT 400 through the image amplifying unit 320 so that the viewer continues to watch the normal image.

Meanwhile, while watching TV, the microcomputer 200 determines whether the specific image magnification function is turned on (S303) and has a separate key input for turning on the specific image magnification function in the key input unit 220. When the viewer manipulates the key input unit 220 to set the size of the specific image (eg, the face of the drama hero) (eg, twice as large as the image normally displayed on the CRT screen) (S304), and inputs it to the microcomputer 200. . Therefore, the microcomputer 200 inputs a control signal for expanding the specific image and size set by the viewer to the blank expansion unit 712 through the command reception and control unit 710 of the specific screen magnification apparatus 700. The blank expansion unit 712 expands (S305) the specific image input by the viewer, that is, the face of the drama main character currently being watched, in the current state (S305) and inputs it to the synthesis unit 726.

At this time, the CVBS receiver 714 receives the composite video signal CVBS processed by the image processor 300 as an analog signal, demodulates the signal in S306, and converts it into a digital signal through the A / D converter 716 in step S307. Then, the data is sequentially stored in the memory unit 718 that exchanges data with the zoom level storage unit 720 (S308).

The reason for converting the composite image signal CVBS received as an analog signal into a digital signal is to store data in a digital method in the memory unit 718 at the rear stage, and the zoom level storage unit 720 enlarges a specific image. It stores data of standard zoom size.

When the digitized composite video signal CVBS is sequentially stored in the memory unit 718, the data slice unit 722 receives a command and receives a control signal from the microcomputer 200 through the control unit 710. The composite video signal CVBS stored in 722 is sequentially read, the frames are checked (S309), and the frames are encoded, and the composite video signal CVBS with the frame checked by the amplifier 724 is a predetermined level (for example, 2 times). Amplified (S310) and input to the synthesis unit 726. Therefore, the synthesizer 726 is amplified to a predetermined level by the amplifier 724 of the front end and synthesizes the input composite video signal (CVBS) and the specific video signal extended to the size set by the viewer in the blank expansion unit 712 ( S311) is input to the image processor 300.

The image processor 300 processes a complex image signal CVBS synthesized from the combining unit 726 and a specific image in which the image signal is expanded by a control signal input from the microcomputer 200, and an image amplifying unit ( Amplified to a certain level via 320, and outputs the composite video signal (CVBS) and the extended video of the specific video on the screen of the CRT 400 so that the viewer can display the face of the main character of the drama main character currently watching. Watch the video extended to the size of the belly (S312).

After the extended specific image is displayed on the screen of the CRT 400, the microcomputer 200 determines whether the specific image magnification function is turned off (S313) and separate key input for turning off the specific image from the key input unit 220. If the specific image magnification function is on

The viewer manipulates the key input unit 220 to set the size of a specific image (S304) to perform the process again from the input to the microcomputer 200.

However, the microcomputer 200 determines whether the specific image magnification function is off (S313), and there is a separate key input for turning off the specific image by the key input unit 220. ) Displays the image signal processed by the image processor 300 on the screen of the CRT 400 through the image amplifying unit 320 so that the viewer can continue to watch the normal image.

As described above, in the present invention, when a viewer sets a specific image and a size of a screen through a key input unit and inputs it to the microcomputer, the viewer expands the specific image and the size of the specific screen enlargement apparatus according to a control signal input from the microcomputer. It has the effect of watching the video of a specific screen accurately.

The present invention has been described with respect to a TV-specific screen magnification apparatus and method using a zoom function as described in the claims, the present invention is not limited to this, and those skilled in the art can be applied and modified in various ways will be.

Claims (3)

A microcomputer 200 for controlling TV operation, a tuner 100 for receiving and tuning a broadcast signal of a channel selected by a tuning voltage, an image processor 300 for processing a video signal, and amplifying a video signal. The image amplification unit 320, the CRT 400 for displaying an image, the audio processor 500 for processing an audio signal, and the processed audio signal are amplified to a predetermined level to generate an audio signal through the speakers 600 and 620. In the TV having a voice amplifier 520 for outputting a video, when the viewer selects a function of enlarging a specific image of the screen to the microcomputer 200 through the key input unit 220, the control signal of the microcomputer 200 is received. And a specific screen magnification apparatus 700 configured to include a specific screen magnification apparatus 700 for synthesizing with the CVBS by expanding the selected specific image to a level set by the zoom function. The apparatus of claim 1, wherein the specific screen magnifier 700 receives a command and receives a control signal of the microcomputer 200 through a control unit 710 when a key is input to realize a zoom function. Blank signal expansion unit 712 for expanding the video signal of a specific screen, CVBS demodulation unit 714 for receiving and demodulating the CVBS processed by the image processor 300 as an analog signal, and the CVBS of the demodulated analog signal is a digital signal. A / D conversion unit 716 for converting the data into a memory, a memory unit 718 for sequentially storing the digitalized CVBS, and data of the standard zoom size for exchanging data with the memory unit 718 to enlarge a specific image. Read the composite image signal (CVBS) stored in the memory unit 718 by the control signal of the microcomputer 200 input through the zoom level storage unit 720 and the command reception and control unit 710 to check the frame Anger The slice unit 722, the amplifier 724 for amplifying the gain of the coded CVBS whose frame is checked, and the video signal of the specific screen extended by the CVBS and the blank expansion unit 712 amplified by the amplifier 724. And a synthesizer 726 for synthesizing and inputting the synthesized image to the image processor 300. A method of enlarging a TV screen, the method comprising: determining whether a specific image magnification function is turned on while watching TV; and if a specific image function is turned on due to key input, setting a specific image size to expand the specific image to a set size; Demodulating the received CVBS by processing the image signal and storing the digitalized CVBS, reading the CVBS stored sequentially in the memory by the control signal of the microcomputer 200, checking the frames, and amplifying the CVBS; A method of enlarging a TV-specific screen using a zoom function consisting of synthesizing a CVBS and an extended specific video signal, and viewing an extended specific video from the video signal.