Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2007-02-13
2007-02-13
Sniezek, Andrew L. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S077130, C360S073040
Reexamination Certificate
active
11225930
ABSTRACT:
An apparatus, system, and method are disclosed for the velocity proportional clocking of time base servo tape storage devices. The apparatus, system, and method allow the velocity of time base servo tape storage devices to be adjusted and maintained by adjusting the frequency of a clock. In one embodiment, a velocity command is received and the clock signal frequency is varied in response to the command. A feedback control signal may then be produced to control the velocity of a time base servo device in response to the clock signal frequency, the feedback control signal being used to vary the velocity of a servo motor. In one embodiment, the velocity of the servo motor varies directly proportionate to the clock signal frequency.
REFERENCES:
patent: 6122124 (2000-09-01), Fasen et al.
Bui Nhan Xuan
Hutchins Robert Allen
Ogura Eiji
Taylor Mark Allan
Tsuruta Kazuhiro
International Bussiness Machines Corporation
Kunzler & Associates
Sniezek Andrew L.
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