Method for controlling pulley homing in optic disc machine

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...

AI Technical Summary

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 stepping motor, it will The innermost position 242 of the pulley oscillates slightly and continues to generate noise; however, the added induction device will inevitably increase hardware components and production costs

[0007] Therefore, as mentioned above, in order to perform the homing operation of the tackle, the known method either spends complicated calculations to calculate the original position of the tackle, or adds hardware components to detect the current position of the tackle, which will increase the design complexity and complexity of the CD player. production costs, and even increases the chances of disc drive failure at the same time

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