Method for controlling pulley homing in optic disc machine

A technology of optical disc drives and pulleys, which is applied in optical recording/reproduction, recording of information on magnetic disks, instruments, etc., and can solve problems such as improving optical disc drives, increasing hardware components, production costs, and machine parts damage. To achieve the effect of improving the failure rate

Inactive Publication Date: 2005-08-03
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Then, in addition to simply driving the pulley 234 to move the maximum moving distance of the pulley inwardly, an induction device (not shown), such as a mechanical switch or an optical coupling element switch, needs to be arranged at the innermost position 242 of the pulley. , to indicate whether the tackle 234 has moved to the innermost position 242 of the tackle, so as to stop driving the tackle motor 142 in time to stop the movement of the tackle 234; Stop at the innermost position 242 of the tackle, but the tackle motor 142 continues to be driven, causing misoperation and even damage to the parts. For example, if the tackle motor 142 is a

Method used

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  • Method for controlling pulley homing in optic disc machine
  • Method for controlling pulley homing in optic disc machine
  • Method for controlling pulley homing in optic disc machine

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[0019] Refer to Figure 3, which is a schematic diagram of a stepping motor to illustrate the control method of the stepping motor 300. The stepping motor is used as the trolley motor as described above, which includes a rotor 310 and a phase A stator. 302, a phase B stator 304, a phase A'stator 306, and a phase B'stator 308, wherein the rotor 310 has a specific magnetic field, so the protruding end of the rotor in the figure will point to a rotor direction in the same direction as the applied magnetic field ; And individual stators can change individual magnetic field directions through external control signals, and synthesize an equivalent magnetic field direction to control the rotor direction. Refer to Figure 4 again, which is a timing diagram for explaining the control signal of the stepping motor to control the excitation frequency of the stepping motor. The control signal of each phase is switched between a high potential and a low potential. It is used to change the directi...

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Abstract

The method of controlling pulley homing in optical disc machine is to drive one pulley motor to make pulley home. The method includes the stage of starting the motor, the stage of converting rotation speed and the stage of maintaining the rotation speed. In the stage of starting the motor, the pulley motor is driven in the first target rotation speed; in the stage of converting rotation speed, the rotation speed of the pulley motor is converted from the first target rotation to the greater second target rotation speed; and in the stage of maintaining the rotation speed, the pulley motor is driven continuously in the second target rotation speed.

Description

technical field [0001] The present invention relates to a control method for an optical disc drive, and in particular to a control method for a pulley in the optical disc drive. Background technique [0002] With the advancement of computer technology and the popularization of multimedia applications, users' demand for high-capacity and low-cost storage devices is also increasing. Among them, optical storage media has the characteristics of long data retention period and convenient storage media portability and exchange. The optical disc drive system is designed to allow users to easily replace the optical discs therein, so the optical disc drive becomes the main storage medium for data backup and data exchange. When the user replaces the optical disc in the optical disc drive every time, the optical disc drive will perform a film feeding action and perform some initialization actions to facilitate the user's subsequent operations on the optical disc. Wherein in this advanc...

Claims

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Application Information

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IPC IPC(8): G11B7/085G11B19/20
Inventor 高东炜符湘益陈祺丰
Owner LITE ON IT
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