PMAD/PSA digital feedback system
AssigneeDPHI Acquisitions, Inc.
InventorsCharles R. Watt, Christopher J. Turner
Life of this patent
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Abstract
A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The control system can be operable to obtain digital feedback from a spin motor. The present invention includes detecting data representing a position on an optical medium and determining a detection rate; comparing the detection rate to a reference rate to provide an error rate; generating an output command in response to the error rate to provide a drive output which commands a voltage applied to a spin motor to adjust the spin speed of said spin motor.
Claims12
A method for obtaining digital feedback from a spin motor comprising:
- detecting data representing a position on an optical medium and determining a detection rate;
- comparing said detection rate to a reference rate to provide an error rate;
- generating an output command in response to said error rate to provide a drive output which commands a voltage applied to a spin motor to adjust the spin speed of said spin motor.
A system for obtaining digital feedback from a spin motor comprising:
- a control module operable to detect data representing a position on an optical medium and determine a detection rate, to compare said detection rate to a reference rate to provide an error rate, and to generate an output command in response to said error rate to provide a drive output which commands a voltage applied to a spin motor to adjust the spin speed of said spin motor.
Dependencies are inferred from the claim text.