Dynamic tracking system for home use VTR

Author

Otsuki, Shinsuke

Author_Institution

Matsushita Electric Industrial Co. Ltd., Osaka, Japan

Volume

38

Issue

3

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

175

Lastpage

180

Abstract

A dynamic tracking system without a brush and a slip ring using a moving-magnetic actuator and eddy current sensors was developed for home use videotape recorders (VTRs). The dynamic tracking system was driven in a wide range by the actuator and positioned accurately by the sensors. The actuator had high sensitivity and could keep a stable contact between magnetic tape and heads, allowing for a large travel of ±1 mm. The eddy current sensors are described. The tracking system realized noiseless playback at nine times forward speed and reverse speed on VHS format VTRs

Keywords

eddy currents; electric actuators; electric sensing devices; position control; video tape recorders; 1 mm; VHS format; dynamic tracking system; eddy current sensors; forward speed; heads; home use VTR; home use videotape recorders; large travel; magnetic tape; moving-magnetic actuator; noiseless playback; position control; reverse speed; stable contact; wide range; Brushes; Circuits; Coils; Eddy currents; Magnetic heads; Microprocessors; Piezoelectric actuators; Sensor systems; Springs; Video recording;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.156680

Filename

156680