KR930024278A

KR930024278A - Channel scanning method

Info

Publication number: KR930024278A
Application number: KR1019920009115A
Authority: KR
Inventors: 김주활
Original assignee: 박병엽; 주식회사 팬 택
Priority date: 1992-05-28
Filing date: 1992-05-28
Publication date: 1993-12-22

Abstract

본 발명은 채널 스캐닝 방법에 관한 것으로, 노이즈스켈치 및 캐리어스캘치 방법을 병행하여 CPU에서 이들을 제어하여 수신대기상태에서는 캐리어스켈치부에서 캐리어 유.무를 확인한 다음 노이즈스켈치에 의해 노이즈신호를 재확인하여 검출되는 채널스캔신호가 있으면 스캐닝을 정지하고 음성신호를 증폭하여 출력하고, 음성정보를 수신하는 동안은 노이즈스캘치 실시후 캐리어스켈치를 확인 실시하여 검출되는 채널스캔신호가 없는 것으로 확인되면 저주파증폭부를 뮤팅시켜 음성출력을 차단하고 스캐닝을 계속하는 방법으로 채널스캐닝 시간이 빠르고 채널선국이 정확한 동시에 소모되는 전류를 최소화할 수 있고 수신되는 음성신호의 끊김현상도 방지할 수 있다.The present invention relates to a channel scanning method, in which both the noise squelch and the carrier squelch are controlled by the CPU, and in the reception standby state, the carrier squelch checks the presence or absence of carriers and then reconfirms the noise signal by the noise squelch. If there is a channel scan signal, scanning stops and amplifies the audio signal and outputs it. While receiving voice information, after performing noise squelch, check the carrier squelch and mute the low frequency amplification part if there is no detected channel scan signal. By blocking the audio output and continuing the scanning, the channel scanning time is fast and the channel selection is accurate and minimizes the current consumed.

Description

Channel scanning method

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

제3도는 본 발명에 의한 채널 스캐닝 방법을 설명하기 위한 시스템 블럭도, 제4도는 제3도에 따른 CPU의 제어 동작흐름도.3 is a system block diagram illustrating a channel scanning method according to the present invention, and FIG. 4 is a flowchart illustrating a control operation of a CPU according to FIG.

Claims

In the channel scanning method, the carrier squelch 14 and the noise squelch 15 are connected in parallel to the radio frequency discriminating unit 13 of the radio, and the carrier squelch 14 and the noise squelch (from the CPU 17) ( 15) to control the low frequency amplifier 16 by determining whether or not the carrier and noise signal detected by sequentially controlling the output stops the scanning and then outputs the voice information or blocks the voice information and continues scanning. Channel scanning method.

The program according to claim 1, wherein the program by the CPU 17 controls the carrier squelch unit 14 when the radio is in a reception standby state, and determines whether or not the carrier is present. If there is a carrier detected, the noise squelch unit 15 is controlled to reconfirm the presence or absence of a noise signal, and if it is determined that there is a channel scan signal by the carrier squelch and the noise squelch, muting of the low frequency amplifier 16 is performed. Canceling and outputting voice information; first, during receiving voice information, if there is a noise signal detected by the noise squelch, reconfirming the presence or absence of carriers by the carrier squelch; and also detecting by the noise squelch and the carrier squelch. If no noise signal and carrier are present, the low frequency amplifier 16 is muted and scanning is performed until a carrier is detected. Channel scanning method comprising the step of continuing.

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