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. 23, 1996
Filed:
Dec. 17, 1993
Fumiyuki Mikami, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A coding method and apparatus convert a data word of m.times.r bits into a code word of n.times.r bits (m<n) with regard to a predetermined number r. The basic data word length m is made two or three bits, basic code word length n is made five bits and the predetermined number r satisfies the relation 1.ltoreq.r.ltoreq.4 or 1.ltoreq.r.ltoreq.2 respectively, the data word of m.times.r bits is converted into a code word of 5r bits, and coding is performed in such a manner that the run number of '0's is greater than four and less than 19, or greater than one and less than five respectively. Further, a decoding method and apparatus decode perform decoding in accordance with the logical expressions