Optical disk drive device and its optical head jump control method and device

Abstract

The invention provides an optical disk driving device, and a method and a device for controlling the jumping of an optical head of the optical disk driving device. The method for controlling the jumping of the optical head comprises the followings steps of: driving an optical disk at fixed linear speed; receiving a jumping command, and then judging whether the optical head can jump to a dangerous area which is an area out of an optical disk data area or not on the basis of the current linear speed; performing jumping and reducing the current linear speed when jumping fails and determining that the optical head can jump to the dangerous area; and repeating the steps until jumping is successful. Jumping failure means that the optical head jumps to a protecting area out of the optical disk data area or the jumping optical head stops at the boundary of the optical disk data area when the optical head is judged to jump out of the optical disk. By the technical scheme, the structure of the optical disk driving device is simplified under the condition that a Hall sensor and a control loop are omitted, the cost is reduced, the optical head is prevented from flying out of the optical disk, the problem of jumping failure caused by the reason that the optical head flies out of the optical disk data area in a jumping process is solved, and jumping success is ensured.

Description

technical field [0001] The invention relates to the field of optical disc drives, in particular to an optical disc drive device and a method and device for controlling jumping of an optical head. Background technique [0002] Optical disk storage technology is a high-tech that began to develop in the early 1970s. Optical disk storage has a series of incomparable advantages of other recording media, such as high storage density, large capacity, random access, long storage life, stable and reliable operation, light and easy to carry, and is especially suitable for the storage and exchange of large amounts of information. Optical disc storage technology can not only meet the needs of mass information storage in the information society, but also can simultaneously store information in multiple media such as sound, text, graphics, and images, thus fundamentally changing the traditional information storage, transmission, management, and use methods. The change. [0003] Data sto...

AI Technical Summary

Problems solved by technology

However, when a low-cost brush motor is used, since the disc rotation speed cannot be monitored in real time, measures need to be taken to solve the jump failure caused by the optical head 11 flying out of the data area of ​​the disc.

[0009] The Chinese patent application with the application number 200580014502.9 discloses a device for controlling jumping in the range of the bald head, but it does not involve the above-mentioned problems.

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