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:
Sep. 12, 2006

Filed:

Feb. 13, 2002
Applicants:

Kazunari Shiota, Fukuoka, JP;

Hidetoshi Kawamura, Fukuoka, JP;

Seiji Miyahara, Fukuoka, JP;

Isao Takata, Fukuoka, JP;

Kanji Naito, Kawasaki, JP;

Inventors:

Kazunari Shiota, Fukuoka, JP;

Hidetoshi Kawamura, Fukuoka, JP;

Seiji Miyahara, Fukuoka, JP;

Isao Takata, Fukuoka, JP;

Kanji Naito, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

Data arriving from a plurality of channels asynchronously to each other are respectively stored in separate FIFOs (). A controller () monitors the status of the FIFOs (), retrieves the stored data in a predetermined order, and multiplexes the data, together with timing data indicating the presence or absence of the data, into a serial signal having a frame structure in which time slots are fixedly assigned to the respective channels. On the serial data, the same value appears successively as data, and when the data is valid, the corresponding timing data changes from a 0 to a 1. When the data is invalid, the value of the corresponding timing data does not change.


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