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:
Mar. 08, 1994
Filed:
Nov. 05, 1991
Hiroyuki Iwaki, Osaka, JP;
Mitsuhiro Kawaguchi, Osaka, JP;
Shuji Miyake, Osaka, JP;
Shuji Yamamoto, Osaka, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A circuit for inversely converting the signal of six bits converted by the 5B6B coding rule conversion method in the digital transmission into the original signal of five bits is described. On the occasion of inversely converting the 6-bit signal to the original 5-bit signal, the mark rate of the 6-bit signal to be converted inversely is detected in accordance with the 5B6B coding rule conversion pattern. In this case, all patterns of six bits are not detected but such six bits are divided into the upper three bits and lower three bits and the mark rates of six bits are detected from the patterns of upper three bits and lower three bits. Thereby, a number of detected patterns can be reduced and simplification of circuit structure can also be realized.