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:
Jan. 15, 2008

Filed:

Nov. 23, 2004
Applicants:

Tsuyoshi Miura, Kawasaki, JP;

Noriyuki Ihara, Kawasaki, JP;

Shin Fujita, Kawasaki, JP;

Akira Nakagawa, Kawasaki, JP;

Atsushi Ichiki, Kawasaki, JP;

Inventors:

Tsuyoshi Miura, Kawasaki, JP;

Noriyuki Ihara, Kawasaki, JP;

Shin Fujita, Kawasaki, JP;

Akira Nakagawa, Kawasaki, JP;

Atsushi Ichiki, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08C 25/02 (2006.01); G08C 25/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

When error correction data, which is to be inserted into transmission data at specific intervals, is generated by calculating exclusive-OR of the transmission data, cumulative exclusive-OR of the transmission data is continuously calculated independent of the error correction data insertion intervals. Exclusive-OR between a calculation of the exclusive-OR at the time of the previous error correction data insertion and a calculation of the exclusive-OR at the time of the current error correction data insertion is calculated, thereby generating error correction data to be inserted at the present time. This provides efficient error correction data calculation.


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