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:
Sep. 30, 1997
Filed:
Jan. 11, 1996
Shigenori Yanagi, Kawasaki, JP;
Satoshi Furuta, Kato-gun, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An encoding unit encodes data to be recorded on a recording medium. The encoding unit includes a first part for inserting resynchronizing bytes between two data blocks within a data field when converting data coded by a predetermined modulation code which generates patterns having D.C. components into pulse width modulation data, where the resynchronizing bytes have resynchronizing patterns and achieve synchronization when a clock slip occurs within the data field, a second part for calculating a digital sum value for a predetermined data block, where the digital sum value indicates a difference between a sum total of logic values '1' and a sum total of logic values '0' in the pulse width modulation data, and a third part for controlling the first part so that the resynchronizing bytes having resynchronizing patterns that minimize the digital sum value is inserted in a present data block.