KR960009662A - Automatic channel switcher of television - Google Patents

Abstract

The present invention provides a video signal detecting means for detecting a video signal that is currently tuned by a tuner and not being included in a channel processed by the image processing means and automatically switching to a channel including a broadcast signal. It provides automatic channel switching device.

To this end, according to the present invention, one or more channels of a remote control transmitter 1, an antenna 3, and a multi-band channel disposed in the antenna 3 function as key input means such as a power on / off button or a channel selection button. By a tuner section 4 for tuning the signal, an intermediate frequency amplifier section 5 for amplifying a frequency band tuned by the tuner section 4, and separating it into an audio signal and a video signal. Data corresponding to the broadcasting channel selected by the key input signal from the audio processor 6, the image processor 8, the CRT unit 10, and the remote control transmitter 10 for processing the separated audio and video signals, respectively In a television equipped with a timer microcomputer 2 to be sent to the tuner section 4, a vertical synchronization signal (V.Sync) is detected from the image processing section 8, and a predetermined detection is detected when this vertical synchronization signal does not exist. To send a signal to the timer microcomputer (2) The video signal detector 9 is further provided.

Description

Automatic channel switcher of television

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

1 is a schematic configuration diagram of an automatic channel switching apparatus for a television according to the present invention.

2 is a flowchart for explaining an automatic channel switching apparatus of a television according to the present invention.

Claims (2)

Tuner for tuning one or more channels among a remote control transmitter 1, an antenna 3, and a multi-band channel disposed in the antenna 3, serving as key input means such as a power on / off button or a channel selection button. Section 4, an intermediate frequency amplifier 5 which amplifies the frequency band of the channel tuned by the tuner 4 and separates the audio signal into a video signal and the audio separated by the intermediate frequency amplifier 5; The tuner receives data corresponding to a broadcast channel selected by a key input signal from the audio processor 6, the image processor 8, the CRT unit 10, and the remote control transmitter 1 for processing the signal and the image signal, respectively. In a television equipped with a timer microcomputer 2 to be sent to the unit 4, when the vertical synchronization signal V.Sync is detected from the image processing unit 8 and this vertical synchronization signal V.Sync does not exist. Video scene for sending predetermined detection signal to timer microcomputer 2 Automatic channel switching device of the television, characterized in that configured by further comprising a detection unit (9). According to claim 1, the timer microcomputer (2) according to the detection signal transmitted from the video signal detection unit (9) of any one of the data for a plurality of channels that includes a broadcast signal stored in a predetermined form in the memory in advance And randomly selecting channel data and transmitting the selected broadcast channel information to the tuner unit (4). ※ Note: The disclosure is based on the initial application.