KR930016999A

KR930016999A - Head Frequency Characteristic Improvement Circuit of Cassette Tape Player

Info

Publication number: KR930016999A
Application number: KR1019920001231A
Authority: KR
Inventors: 최해민
Original assignee: 강진구; 삼성전자 주식회사
Filing date: 1992-01-28
Publication date: 1993-08-30

Abstract

카세트 테이프 플레이어에 있어서 헤드의 주파수특성에 관한 것으로, 헤드의 주파수특성에 관여하지 않고 가청 주파수의 신호를 기록 및 재생할 수 있는 헤드주파수특성 개선회로에 관한 것이다. 소스회로 또는 재생회로를 통해 출력되는 아날로그신호는 디지탈신호로 변환하는 제1 변환수단과, 기록시 제1 변환수단에서 출력되는 신호의 주파수대역을 압축시키는 제1 필터수단과, 제1 변환수단에서 출력되는 신호의 주파수 대역을 확장시키는 제2 필터수단과, 제1 필터수단과, 제2 필터수단을 통해 출력되는 디지탈신호를 아날로그신호로 변환하는 제2 변환수단으로 구성된다. 음향신호를 기록 또는 재생하는 헤드에 있어서 헤드의 차단주파수특성에 관계없이 가청주파수인 20KHz의 음향신호를 기록 또는 재생할 수 있는 이점이 있다.The present invention relates to a frequency characteristic of a head in a cassette tape player, and more particularly to a head frequency characteristic improvement circuit capable of recording and reproducing an audible signal without involving the frequency characteristic of the head. The analog signal output through the source circuit or the reproduction circuit includes first conversion means for converting into a digital signal, first filter means for compressing a frequency band of the signal output from the first conversion means in recording, and in the first conversion means. And a second filter means for extending the frequency band of the output signal, a first filter means, and second conversion means for converting the digital signal output through the second filter means into an analog signal. In the head for recording or reproducing the sound signal, there is an advantage that the sound signal of 20 KHz, which is an audible frequency, can be recorded or reproduced regardless of the cutoff frequency characteristic of the head.

Description

Head Frequency Characteristic Improvement Circuit of Cassette Tape Player

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

제1도는 본 발명에 의한 실시예인 카세트 테이프 플레이어의 헤드주파수 특성 개선회로.1 is a circuit for improving head frequency characteristics of a cassette tape player according to an embodiment of the present invention.

Claims

In a cassette tape player, an analog signal output from a source circuit generating an audio signal is converted into a digital signal during recording, and an audio signal reproduced through a playback circuit is reproduced through a playback circuit in which the frequency band is compressed and the audio signal is recorded on the tape during playback. First conversion means 200 for converting a signal into a digital signal, and first filter means for compressing a frequency band of the digital signal output from the first conversion means 200 and filtering digital anti-imaging during recording. 50) a second filter means 60 for extending the frequency band of the digital signal output from the first converting means 200 to the frequency band of the original signal at the time of reproduction and filtering the digital anti-imaging; When reproducing the digital signal output from the first filter means 50, the digital signal output from the second filter means 60 is converted into an analog signal. A second frequency characteristic conversion head gaeseonhoe, characterized in that it comprises a means (70) for.

2. The head frequency characteristic improvement circuit according to claim 1, wherein the first filter means comprises a decimation filter.

2. The head frequency characteristic improvement circuit according to claim 1, wherein the second filter means comprises an interpolation filter.

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