Apparatus for recording and/or reproducing data signal on or from disk shaped recording medium at a variably selected constant linear velocity
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United States of America Patent
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-
Dec 6, 1988
Issued Date -
N/A
app pub date -
Jun 16, 1987
filing date -
Oct 17, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for recording and/or reproducing a data signal on or from a disk shaped recording medium having a special track in which control information is prerecorded. The apparatus reproduces the control information at first when the disk is mounted therein, and stores the reproduced control information in a memory. A rotation control cirucit for controlling the rotation of the recording medium is supplied with a control signal based on the control information read out of the memory and controls the rotation of the medium such that the linear velocity of the rotation is of a predetermined constant value according to the control information.
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