US 6,445,658 B1 · Disk reproducing speed control method and a disk reproducing apparatus using this method

Abstract

When a deviated gravity disc is reproduced at a higher rate with the disc reproducing apparatus, an excessive vibration is generated and this vibration gives adverse effect on the disc reproducing apparatus and peripheral components/apparatuses, and/or may represent an annoyance to a user. A vibration information detector for detecting vibration of the disc reproducing apparatus or a deviated gravity information detector for detecting amount of gravity deviation of disc is provided, and as a result of such detection of an imbalance (i.e., excessive vibration or mass eccentricity), and a reproducing rate switching control controls sets and limits the reproducing rate of the disc reproducing apparatus to a substitute speed which is lower or higher than a normal reproducing speed.

Claims10

Dependent claims

A disc reproducer for rotating a disc, comprising:

a detector for detecting vibration of said disc reproducer itself;
and
a rotator for rotating the disc at a first rotational speed which is faster than normal rotational speed;
wherein said rotator rotates the disc at a second rotational speed which is faster than the normal rotational speed and is slower than the first rotational speed when said detector detects the vibration.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

09/992,427Filed 26 Nov 2001 · continuation

Priority

JP 8-19433824 Jul 1996

Published

US 2002/0034140 A121 Mar 2002

Granted

3 Sep 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G11B 7/0953
Specially adapted for discs, e.g. for compensation of eccentricity or wobble: to compensate for eccentricity of the disc or disc tracks
G11B 19/26
Driving; Starting; Stopping; Control thereof: speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
H02J 9/062
With automatic change-over , e.g. UPS systems: for AC powered loads
H02M 7/4807
Using discharge tubes with control electrode or semiconductor devices with control electrode: having a high frequency intermediate AC stage

Disk reproducing speed control method and a disk reproducing apparatus using this method

Life of this patent

Disk reproducing speed control method and a disk reproducing apparatus using this method

Life of this patent

Abstract

Claims10