KR970063230A

KR970063230A - Tape linear speed measuring device

Info

Publication number: KR970063230A
Application number: KR1019960003304A
Authority: KR
Inventors: 성관수
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1996-02-12
Filing date: 1996-02-12
Publication date: 1997-09-12

Abstract

자기 기록 시스템의 테이프 선속도 측정 장치에 관한 것으로, 특히 자기 기록 테이프의 주행을 제어하는 정보가 실리는 제어트랙을 갖지 않는 자기 기록 시스템의 테이프 선속도를 측정하는 장치에 관한 것이다. 상기의 속도 게산 장치는 회전하는 드럼에 위치되며 테이프에 기록된 신호를 재생하는 수단과, 상기 재생된 신호로 부터 파일롯 신호를 검출하여 헤드의 트랙에 대한 위치와 상관관계를 갖는 크기의 ATF 신호를 발생하는 ATF신호 검출기와, 상기 발생된 ATF 신호로부터 트랙의 테이프 방향의 넓이 비례하는 펄스 신호를 만들어 주는 2치화회로 및 상기 2치화회로의 출력의 주기 또는 펄스폭을 측정하여 테이프의 선속도를 계산하는 속도 계산부를 포함하여 구성된다.And more particularly to an apparatus for measuring a tape linear velocity of a magnetic recording system having no control track carrying information for controlling the running of a magnetic recording tape. The apparatus includes a means for reproducing a signal recorded on a tape and for reproducing a signal recorded on the tape, and an ATF signal having a size correlated with a position of the track of the head by detecting a pilot signal from the reproduced signal. A binarizing circuit for generating a pulse signal proportional to the width of the track in the track direction from the generated ATF signal and a linear period or pulse width of the output of the binarizing circuit to calculate the linear velocity of the tape And a speed calculator for calculating a speed of the motor.

Description

Tape linear speed measuring device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명에 따른 테이프 선속도 측정 장치의 구성도로서, 이는 제어 트랙 방식을 이용하지 않는 자기 기록 시스템에서 이용되는 것을 도시한 것이다.FIG. 2 is a configuration diagram of a tape linear velocity measuring apparatus according to the present invention, which is used in a magnetic recording system that does not use a control track method.

Claims

A linear velocity calculation device for a magnetic recording system in which a pilot signal for reproduction control is recorded on a track on which information is recorded, the linear velocity calculation device comprising: means for reproducing a signal recorded on a tape and located on a rotating drum; An ATF signal detector for detecting an ATF signal having a size correlated with a position of a track of the head, a binarizing circuit for producing a pulse signal proportional to the width of the track in the tape direction from the generated ATF signal, And a speed calculating section for calculating a tape linear velocity by measuring a period or a pulse width of an output of the binarizing circuit.

The tape linear velocity measuring apparatus according to claim 1, wherein the binarizing circuit is a hysteretic comparator for detecting a zero crossing point of the ATF signal.

The tape linear velocity measuring apparatus according to claim 1, wherein the binarizing circuit is a peak detector for detecting a peak point of the ATF signal.

The apparatus according to any one of claims 1 to 3, wherein the velocity calculation unit calculates the linear velocity of the tape based on the following equation in response to the input of the pulse output from the binarization circuit: Speed measuring device.

Here, n is an integer, s is the width of the track in the tape direction, T is the measured ATF period, and Vref is the tape speed at the normal time.

※ Note: It is disclosed by the contents of the first application.