Title:
METHOD OF AND DEVICE FOR CONTROLLING MOVEMENT OF RECORDING MEDIUM
Document Type and Number:
Japanese Patent JPS54107212
Kind Code:
A
Abstract:
A recording medium transport control precisely controls the movement of a recording medium such as magnetic tape at a desired velocity. A pulse drive control adapted for manipulation provides drive pulses to the transport. Each drive pulse is of a variable duration sufficient to drive the transport so that the medium is moved a predetermined distance. One embodiment of the present invention includes a velocity servo drive control, also adapted for manipulation, for providing an adjustable continuous drive signal to the transport and a switch for switching control of the transport from the pulse drive control to the velocity servo drive control when the velocity of the transport reaches a predetermined cross-over velocity.
Inventors:
POORU EE MOOKU
Application Number:
JP16458978A
Publication Date:
August 22, 1979
Filing Date:
December 25, 1978
Export Citation:
Assignee:
AMPEX
International Classes:
B65H23/18; G05D3/12; G05D13/62; G11B15/18; G11B15/46; H04N5/783; G11B15/467; G11B15/54; G11B15/60; G11B27/00; G11B27/13; (IPC1-7): B65H25/22; G05D3/06; G05D13/62; G11B15/46; H04N5/78
Domestic Patent References:
| JPS5177310A | 1976-07-05 | |||
| JPS4828573A | 1973-04-16 |
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