KR950013081A

KR950013081A - Channel auto maintainer of radio

Info

Publication number: KR950013081A
Application number: KR1019930022623A
Authority: KR
Inventors: 이승섭
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-10-28
Filing date: 1993-10-28
Publication date: 1995-05-17

Abstract

본 발명은 라디오가 구비된 이동체가 청취 지역이 바뀌어도 현재 수신하고 있는 방송국의 방송을 자동으로 계속 청취하도록 하는 라디오의 채널 자동 유지 장치에 관한 것이다.The present invention relates to an apparatus for automatically maintaining a channel of a radio such that a mobile unit equipped with a radio automatically continuously listens to a broadcast of a broadcasting station currently received even if the listening area is changed.

본 발명은 각 방송국의 각 지역 주파수가 모두 기억되어있는 채널 정보부와, 이동체가 청취 지역을 벗어나면 상기 채널 정보부에 저장되어 있는 국부 발진 주파수를 변화시켜 현재 채널에 해당되는 그 지역 방송 주파수를 검출하여 주파수를 자동으로 변경하는 제어부를 오디오 출력 회로에 구비시켜, 채널 정보부에 각 방송국의 지역 주파수를 기억하여 두 청취지역이 바뀔때마다 캐리어 주파수를 검출함으로써 현재 듣고 있는 라디오 방송 프로그램의 주파수가 자동적으로 검출되게 되어 자동차와 같은 이동체가 이동시에도 현재 듣고 있는 라디오의 프로그램을 계속 청취할 수 있게 된다.The present invention detects the local broadcasting frequency corresponding to the current channel by changing the channel information unit in which all local frequencies of each broadcasting station are stored, and the local oscillation frequency stored in the channel information unit when the moving object leaves the listening area. The audio output circuit includes a control unit for automatically changing the frequency, and stores the local frequency of each broadcasting station in the channel information unit and detects the carrier frequency whenever the two listening zones are changed. This allows a mobile object such as a car to continue to listen to the program of the radio currently being listened to when moving.

Description

Channel auto maintainer of radio

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

도면은 본 발명의 실시예에 따른 자동차에서의 라디오 채널 자동 유지 장치의 블럭도이다.Figure is a block diagram of a radio channel automatic maintenance apparatus in a vehicle according to an embodiment of the present invention.

Claims

A wireless receiver which receives and amplifies the high frequency induced by the antenna, a local oscillator that generates and outputs a local oscillation frequency to convert the output of the radio receiver into an intermediate frequency, and a difference between the output of the wireless receiver and the output of the local oscillator An audio output circuit comprising audio processing means for demodulating and demodulating the original audio signal, outputting the demodulated signal through a speaker, and detecting a carrier frame by measuring a current value of an intermediate frequency. The channel information unit stores all local frequencies of each broadcasting station, and when the moving object leaves the listening area, the local oscillation frequency stored in the channel information unit is changed to detect the local broadcasting frequency corresponding to the current channel and to automatically detect the frequency. And a control unit for changing the signal to the audio output circuit.

※ Note: The disclosure is based on the initial application.