Importance

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Abstract

The present invention provides a method and system for providing timing adjustments to perform reliable optical recording at high speeds. The present invention includes performing a timing adjustment in a coarse increment to a write control signal using a clock with a cycle less than T, where T is a fundamental unit of time for a data mark; and performing a timing adjustment in a fine increment to the write control signal using a time delay technique. The method and system in accordance with the present invention provides a write control logic which allows for multiple levels of time adjustment for each type of mark. In the preferred embodiment, a dual level timing adjustment technique is provided. The first level provides coarse timing adjustments using a clock with a cycle less than T and parameters to control the power level and time duration of each mark. The second level provides fine timing adjustments using time delay techniques. By using the first and second levels of adjustments together, fine adjustments are provided without the need for expensive fast clocks. The method and system in accordance with the present invention thus allows for the writing of data at high speeds without compromising data reliability and without increasing the cost of manufacturing the optical drive.

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First Claim