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Optical disk system mainshaft motor stopping method and controlling device

A technology of spindle motor and motor stop, which is used in the recording of information on the magnetic disk, the electric motor/converter plug, the reduction gear of the DC motor, etc., which can solve the problems of inability to refer to the FG signal and detect the spindle motor.

Inactive Publication Date: 2006-07-12
TIAN HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the optical disc system of this mode intends to operate and stop the rotation of the spindle motor (such as when the user presses the eject button of the optical disc system), it cannot refer to the FG signal to detect whether the spindle motor has stopped.

Method used

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  • Optical disk system mainshaft motor stopping method and controlling device
  • Optical disk system mainshaft motor stopping method and controlling device
  • Optical disk system mainshaft motor stopping method and controlling device

Examples

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Embodiment Construction

[0023] Please refer to figure 1 As shown, it represents a schematic block diagram of a spindle motor control circuit of an optical disk system. As shown in the figure, the spindle motor control circuit 100 includes an optical disk control chip 110 , a motor drive circuit 120 and a spindle motor 130 . Wherein, the spindle motor 130 is a DC motor in this embodiment, which is driven by the motor driving circuit 120 to run, and the motor driving circuit 120 is based on the spindle motor control signal DMO and the reference signal REF sent by the optical disc control chip 110, To control the running direction and rotating speed of the spindle motor 130 .

[0024] When the level of the spindle motor control signal DMO is higher than the level of the reference signal REF, the motor driving circuit 120 controls the spindle motor 130 to run in a normal direction for data access. When the level of the spindle motor control signal DMO is lower than the level of the reference signal REF...

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Abstract

A controller for stopping the mainshaft motor of optical disc system is composed of optical disc control chip, motor driver, and mainshaft motor. Said control chip can generate a control signal to drive the mainshaft motor. Its stopping method includes controlling the level of said control signal to generate a reverse torque, gradually changing its level toward locking level, applying a control signal whose level is between locking level and stop level to the motor driver, and holding the level of control signal to stop level.

Description

technical field [0001] The present invention relates to an optical disc system, and more particularly to a method for stopping a spindle motor of the optical disc system. Background technique [0002] For a long time, storage media have played an indispensable role in computer systems. Therefore, the scientific and technological circles continue to invest in the research of storage media, and have also made great progress. Not only the type of storage media, but also its stability and storage capacity. Due to the advantages of high stability and high storage capacity of optical discs, various optical disc products with different characteristics are constantly being introduced, and their application scope is becoming more and more popular. [0003] Generally speaking, the operation modes of the optical disc system can be divided into Constant Linear Velocity (CLV for short) mode and Constant Angular Velocity (CAV for short) mode. The so-called constant angular velocity mod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B19/20H02P3/08
Inventor 蔡材昕黄长城陈俞伊
Owner TIAN HLDG LLC
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