Calibrating the light beam of an optical data storage system on insertion of a storage member

Abstract

Abstract The present invention relates to an optical data storage system comprising means for receiving an optical data storage member (13), means for generating a light beam, focusing means (22) for focusing said light beam on a received storage member, light beam control means for controlling the light beam so as to perform data storage operations on the storage member, moving means (20, 23) for moving the light beam relative to the storage member, and calibrating means for calibrating the light beam control means. According to the invention the storage system is characterised in that the calibrating means comprises means for generating a signal indicating the receipt of a storage member, means responsive to the signal for causing the moving means to move the light beam to a selected portion (70) of the received storage member, means for causing the focusing means to de-focus the light beam, means for setting the intensity of the light beam at a selected low level at which it does not affect the data storage areas of the storage member, and means for operating the calibrating means to calibrate the light beam control means when the light beam is de-focused and its intensity is at the selected low level.

Inventors

• 👤 August Fennema
• 👤 Blair Ian Finkelstein
• 👤 Morovat Tayefeh
• 👤 Raymond Yardy

Bibliographic Details