Recording/reproducing method and recording/reproducing apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 25, 2002
Issued Date -
N/A
app pub date -
Jan 5, 2001
filing date -
Nov 29, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a recording/reproduction apparatus, when a rotational-speed-mode setting instruction is received from an I/F unit, a CPU reads out a control procedure from a storage device, controlling other components in accordance with the procedure. As a result, a node switch driving circuit controls field windings of a pulse motor to a switching sequence, driving the pulse motor to rotation at a predetermined rotational speed. Since the control is feedback control, the pulse motor rotates at the predetermined rotational speed specified by an instruction setting a rotational-speed mode with a high degree of reliability. Data can thus be recorded into and reproduced from a magnetic disk at a variable speed.
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