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:
Apr. 29, 1997
Filed:
Dec. 08, 1995
James J Dente, Longmont, CO (US);
Blair I Finkelstein, Tucson, AZ (US);
Marc E Goldfeder, Tucson, AZ (US);
Michael T Solan, Tucson, AZ (US);
Daniel J Winarski, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
By adjusting the advancement rate of an optical data storage medium in response to the amount of data to be written, and operating a laser with a minimum amount of write laser power level for the particular advancement rate to achieve a desired level of write effectiveness, data signals are written to the optical medium with a minimum amount of power. Where the optical medium comprises an optical disk, choosing the rate of disk rotation selectively establishes the advancement rate. Similarly, where the optical medium comprises an optical tape, choosing the rate of tape advancement from source reel to take-up reel selectively establishes the advancement rate. Preferably, the advancement rate is increased or decreased depending upon whether a greater or lesser quantity or write length of data resides in a write queue. The invention may be implemented, for example, to provide a process, apparatus or program storage medium useful for laser storage of digital data signals to an optical data storage medium with minimal power consumption.