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:
May. 21, 2002
Filed:
Jan. 30, 2001
Teruhiko Ushio, Shiga, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus are provided for modulating code for use with written optical disks such as digital video disks (DVD). The invention falitates 8/16 modulation by eliminating duplicate code conversion and by reducing the number of times that conversion codes must be looked up from a conversion table. A conversion code corresponding to a received input code is specified from among a plurality of conversion codes. Duplication information corresponding to the input code is read from a pre-processing table and duplicate information indicated duplicate conversion codes in the plurality of conversion codes is stored. Conversion code corresponding to the input code is read from the conversion table and is selectively stored with duplicate conversion codes being omitted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile