The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2002
Filed:
Apr. 09, 1999
Jeffrey F. Liu, San Jose, CA (US);
Francis K. King, San Jose, CA (US);
Dcard, Inc., Milpitas, CA (US);
Abstract
This invention discloses an optical servo writer. The optical servo writer includes an optical pickup head for rotationally moving over and writing servo data in an optical flat data-storage medium. The optical servo writer further includes a clock head for providing clock signals to the pickup head and to write clock signals in the clock disk. The optical servo writer further includes a control circuit for controlling The optical pickup head for writing the servo data on The optical flat data-storage medium. The optical servo writer further includes a servo pattern layout circuit for controlling The optical pickup head for writing the servo data on The optical flat data-storage medium with predefined servo patterns. The optical servo writer further includes a derived index control circuit for deriving indices from a fixed index provided on The optical flat data-storage medium. The optical servo writer further includes a fixed index and clock track circuit for providing a fix index and a clock signal for controlling The optical pickup head for writing the servo data on The optical flat data-storage medium. The optical servo writer further includes a head move circuit for controlling a movement of The optical pickup head for writing the servo data on The optical flat data-storage medium. The optical servo writer further includes a medium movement circuit for controlling a linear movement of the optical flat data-storage medium for writing the servo data on the optical flat data storage medium.