Process for controlling the capstan in a video tape recorder...

Details Process for controlling the capstan in a video tape recorder... Process for controlling the capstan in a video tape recorder...

2005-08-30

2005-08-30

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

C360S073010, C360S074100

Reexamination Certificate

active

06937416

ABSTRACT:
In a video tape recorder (VTR), the capstan draws the tape from which the video signal is reproduced in a forward direction. The following steps are used to control the capstan, applying a torque to the capstan in a backward direction for a first predetermined period of time. Applying a torque to the capstan in the forward direction for a second predetermined period of time and nullifying the motor current. This arrangement is particularly convenient for slow-motion and still-picture modes.

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R. W. Van Pelt, “Microprocessor Controlled Tape Motion,” IEEE Transactions on Magnetics, IEEE Inc. New York, US, vol. MAG17, No. 4, Jul. 1981, pp. 1435-1437. XP002218343 *Search Report Attached.

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