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.

Date of Patent:
Mar. 17, 1998

Filed:

Apr. 12, 1996
Applicant:
Inventors:

Koichi Hirayama, Yokohama, JP;

Yoshiyuki Ishizawa, Yokohama, JP;

Shinichi Tanaka, Kyoto, JP;

Toshiyuki Shimada, Kobe, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341 59 ; 341 58 ; 341 61 ;
Abstract

Source data each consisting of m-bits can be converted into conversion codes each consisting of n (>m) bits with ease, and reverse conversion thereof can be performed with ease. The code conversion and the reverse conversion can be characterized in terms of a series of tables. The current input source data and the next input source data are respectively taken in by registers. Whether or not the run length at a connecting portion between consecutive source data satisfies conditions is determined by a control unit, and a table to be used is selected to finally obtain a conversion code.


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