KR950007467A - Channel search apparatus and method with screen switching function - Google Patents

Abstract

The present invention converts and displays a broadcast program of a sub-screen area selected by a viewer from among a plurality of broadcast programs displayed on a plurality of sub-screen areas separated from each other so as not to overlap the main screen area on which the broadcast program currently being viewed is displayed. A screen searching and method for an optical screen television receiver having a screen switching function. The present invention provides a first image detecting circuit for detecting a main picture image signal from a first tuner for tuning an intermediate frequency signal loaded with a broadcast program from a high frequency signal received through an aerial line and an intermediate frequency signal from the first tuner. Video signal for one sub picture, still picture and moving picture which detects and compresses the second tuner for tuning the intermediate frequency signal loaded with the broadcast program from the high frequency signal received through the aerial and the intermediate frequency signal from the second tuner. A second image detection circuit having at least two frame memories and at least one frame memory for issuing at least one sub picture image signal having a broadcast program different from the moving image, and a video signal from the first image detection circuit and the second image; Mixer and subscreen room for mixing video signals from detection circuits so that they do not overlap A video matrix including a key matrix having a memory for storing reception channel information of programs and key switches for selecting an auxiliary screen, and a controller for controlling a frame memory of the first and second tuners and the second image detection circuit. A second image detection circuit for changing the second tuner and the tuning channel to a different channel from the channel information stored in the memory to switch the sub picture on which the broadcast program is to be displayed at regular intervals, and storing the image from the second tuner. The sub-screen broadcast corresponding to the sub-screen selection key designated by the viewer for switching the frame memory of the sub-channel, storing the tuned channel information of the switched second tuner in the memory, and moving the broadcast program displayed on the sub-screen to the main screen. Read received channel information of program broadcast program from memory and The tuning channel of the first tuning means is changed to tune the program.

Description

Channel search apparatus and method with screen switching function

Since this is an open matter, no full text was included.

1 is a state diagram of a channel search image displayed on a CPT of an optical screen television receiver.

2 is a block diagram of a conventional channel search apparatus.

3 is a block diagram of a channel search apparatus having a screen switching function according to an embodiment of the present invention.

4 is a state diagram of a screen switched channel search screen displayed on the optical screen CPT by the channel search apparatus shown in FIG.

5 is a flowchart of a channel search method having a screen switching function according to an embodiment of the present invention.

Claims (5)

First tuning means for tuning an intermediate frequency signal loaded with a broadcast program from a high frequency signal received through an aerial line, and first video detecting means for detecting an image signal for main screen from an intermediate frequency signal from the first tuning means. And a second tuning means for tuning an intermediate frequency signal loaded with a broadcast program from the high frequency signal received through the aerial line, and one auxiliary screen having a moving image by detecting and compressing the intermediate frequency signal from the second tuner. Second image detecting means having at least two frame memories for generating a video signal and a still picture and at least one sub picture video signal having a broadcast program different from the moving picture; and from the first video detecting means. The video signals of the video signal and the video signal from the second video detection means so as not to overlap A key input means comprising a mixing means, a memory for storing reception channel information of the sub-screen broadcast programs, key switches for selecting the sub-screen, and a sub-screen to be displayed of the broadcast program Change the tuning channel of the second tuning means to a channel different from the channel information stored in the memory, and switch the frame memory of the second image detecting means for storing the image from the second tuning means. A program for a sub-screen broadcast program corresponding to a sub-screen selection key designated by the viewer to store the tuned channel information of the second tuning means in the memory and to move the broadcast program displayed on the sub-screen to the main screen. Reads received channel information from the memory and starts a broadcast program of the read received channel. To the optical display device of the navigation screen television receiver having a screen switching function, it characterized in that it includes a screen switching function, characterized in that the control means for changing the tuning channel of the first tuning means. 2. The apparatus according to claim 1, wherein said control means comprises on-screen processing means for generating on-screen text signals for channels and other text information, and superimposing said on-screen text signals with video signals from said first mixing means. And a second mixing means for mixing as much as possible. A process of inputting a screen search command and displaying a video signal of a broadcast program received by the first tuner on the main screen, and compressing the video signal of a broadcast program received by the second tuner by at least two frame memories; At least two video signals having one video signal, a still picture and one or more video signals having a broadcast program different from the video signals of the moving picture, and at least two or more video signals generated not overlapping with the main picture Changing the tuning channel of the second tuner and storing the video signal received by the second tuner in order to change the broadcasting program and the display position of the video signal of the sub-screen moving picture at regular intervals. Switching at least two frame memories and storing changed tuning channel information in memory Inputting a screen selection command, reading reception channel information on the sub-screen selected by the sub-screen command from a memory, and tuning channels of the first tuner to tune the broadcast program of the read channel. A screen searching method of an optical screen television receiver having a screen switching function, characterized in that it comprises a switching process. The optical screen television receiver having a screen switching function of claim 3, wherein the inputting of the sub-screen selection command comprises a step of determining whether a current screen search screen is displayed when the sub-screen selection command is input. How to navigate the screen. 5. The screen searching method according to claim 4, further comprising a step of inputting a screen searching cancel command and a step of stopping display of a video signal of a broadcast program of an auxiliary screen. ※ Note: It is to be disclosed based on the initial application.