System and method for performing a spin motor startup operation

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal

Reexamination Certificate

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C369S047470

Reexamination Certificate

active

07079459

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 present invention includes starting the operation of a motor including windings and a rotor; placing the motor in a first operational state; driving the motor from the first operational state to a second operational state; and sensing a variation in an electrical waveform induced by driving of the motor to determine a cycle period from which the speed of the motor can be determined.

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“Method for Smartly Controlling The Optical Disk Drive”, Publication No. 342,492, Taiwan Patent Gazette, Nov. 11, 1998, pp. 1067-1078, X06 (2 pp.) and Abstract in English (1 p.).

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