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US 5,673,242 AGranted
Method for controlling the spindle motor speed of an audio/video disk player
OwnerChi-Cheng Lininventor
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Abstract
A method for controlling speed of a spindle motor within a disk player is provided. The spindle motor drives a disk thereon and the disk player includes a control circuit. The method comprises the steps of: (1) set speed of the spindle motor to operate at a Nominal speed; (2) test if disk data access operation has not occurred for a predetermined amount of time; (3) if result of step 2 is YES, set the spindle motor running at a speed which is between zero and the Nominal speed.
Claims2
A method for controlling speed of a spindle motor within a disk player, the spindle motor driving a disk thereon, comprising the steps of:
- (1) set speed of the spindle motor to operate at a Nominal speed which is greater than zero RPM;
- (2) test if disk data access operation has not occurred for a first predetermined amount of time .DELTA.T1;
- (3) if result of step 2 is YES, set the spindle motor running at a speed S1 which is substantially equal to one half of the Nominal speed;
- (4) test if disk data access operation has not occurred for a second predetermined amount of time .DELTA.T2;
- and
- (5) if result of step 4 is YES, set the spindle motor running at a speed S2 which is substantially equal to one third of the Nominal speed.
3 more elements
Dependencies are inferred from the claim text.