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:
Aug. 30, 2022

Filed:

Jul. 21, 2021
Applicant:

Fujitsu Limited, Kawasaki, JP;

Inventors:

Kazumasa Mikami, Yokohama, JP;

Junichi Sugiyama, Kawasaki, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 13/25 (2006.01); H03M 13/11 (2006.01); H03M 13/31 (2006.01); H03M 13/33 (2006.01);
U.S. Cl.
CPC ...
H03M 13/253 (2013.01); H03M 13/118 (2013.01); H03M 13/1108 (2013.01); H03M 13/1111 (2013.01); H03M 13/25 (2013.01); H03M 13/31 (2013.01); H03M 13/333 (2013.01);
Abstract

An encoding circuit includes an allocator configured to allocate symbols among a plurality of symbols within a constellation of multilevel modulation and correspond to values of a plurality of bit stings, a converter configured to convert values of each of bit strings excluding a first bit string so that, as a region within the constellation is closer to the center of the constellation, the number of symbols allocated in the region is larger, a switch configured to switch between a first time period in which a first error correction code is inserted and a second time period in which the first error correction code is not inserted, and an insertor configured to generate the first error correction code from a second bit string in the second time period and inserts the first error correction code in two or more bit strings in the first time period according to the switching.


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