Reel servo device for recording/reproducing apparatus employing

Details Reel servo device for recording/reproducing apparatus employing Reel servo device for recording/reproducing apparatus employing

1996-12-06

1998-05-26

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

242334, G11B 1543

Patent

active

057575703

ABSTRACT:
A reel servo device employed in a recording and/or reproducing apparatus employing a tape cassette housing a tape as a recording medium includes an unusual running detection circuit for deciding if the tape housed within the tape cassette loaded on the tape recording and/or reproducing apparatus is wound in a slack winding state on a tape reel. If the tape running state is decided to be an unusual tape running state, tape tension data from the supply side tension arm is differentiated. If the differentiation data is positive indicating an increasing tape tension, the rewind side reel motor is controlled in a direction of slackening tape tension at the rewind tape reel side. Conversely, if the differentiation data is negative indicating an decreasing tape tension, the rewind side reel motor is torqued in a direction of tensioning the tape at the rewind tape reel side.

REFERENCES:
patent: 4461433 (1984-07-01), Kani
patent: 4553182 (1985-11-01), Narita
patent: 5039027 (1991-08-01), Yanagihara et al.
patent: 5165622 (1992-11-01), Arai
patent: 5259563 (1993-11-01), Kakiwaki et al.
patent: 5282586 (1994-02-01), Suzuki et al.

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