KR960038871A

KR960038871A - Video cassette recorder with audio signal dubbing

Info

Publication number: KR960038871A
Application number: KR1019950009279A
Authority: KR
Inventors: 김지현
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-04-20
Filing date: 1995-04-20
Publication date: 1996-11-21

Abstract

본 장치는 오디오신호 재생시, 픽업된 오디오신호에 외부장치로부터 인가되는 오디오신호를 직접 더빙할 수 있는 오디오더빙 기능을 갖는 비디오카세트레코더에 관한 것이다. 이를 위하여 본 장치는 인가되는 오디오신호를 재생이 가능하도록 복조처리하기 위한 오디오신호처리부; 마이크와 같은 외부장치로부터 제공되는 오디오신호를 받을 수 있는 입력단자; 입력단자를 통해 인가되는 오디오신호와 오디오헤드로부터 픽업된 오디오신호를 혼합하여 오디오신호처리부로 전송하기 위한 혼합기; 입력단자와 혼합기간의 임피던스를 일치하기 위한 버퍼를 포함하도록 한다.The present invention relates to a video cassette recorder having an audio dubbing function capable of directly dubbing an audio signal applied from an external device to a picked up audio signal when an audio signal is reproduced. To this end, the apparatus includes an audio signal processor for demodulating the audio signal to be reproduced; An input terminal capable of receiving an audio signal provided from an external device such as a microphone; A mixer for mixing the audio signal applied through the input terminal with the audio signal picked up from the audio head and transmitting the mixed audio signal to the audio signal processor; Include a buffer to match the impedance of the input terminal and the mixing period.

Description

Video cassette recorder with audio signal dubbing

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래의 비디오카세트레코더의 재생부분에 대한 개략도이고, 제2도는 본 발명에 따른 오디오신호 더빙기능을 갖는 비디오카세트레코더의 블럭도이다.1 is a schematic diagram of a playback portion of a conventional video cassette recorder, and FIG. 2 is a block diagram of a video cassette recorder having an audio signal dubbing function according to the present invention.

Claims

A video cassette recorder for recording a video signal and an audio signal on a tape using video heads (CH-1, CH-2) and audio heads (A-CH), and picking up from the tape; An audio signal processor 26 for demodulating the applied audio signal to enable reproduction; An input terminal 23 capable of receiving an audio signal provided from an external device such as a microphone 21; A mixer (25) for mixing the audio signal applied through the input terminal (23) and the audio signal picked up from the audio head (A-CH) and transmitting it to the audio signal processor (26); And a buffer (24) for matching the impedance between the input terminal (23) and the mixer (25) to dub an audio signal.

The transistor (24) of claim 1, wherein the buffer (24) comprises: a transistor (Q1) interlocked depending on whether the jack (22) attached to the external device is inserted into the input terminal (23); Bias resistors R2 and R3 set so that the transistor Q1 is turned on when the jack 22 is inserted; And a condenser (C) for transmitting only the alternating current (AC) component of the signal output through the emitter output terminal of the transistor (Q1) to the mixer (25).

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