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.:

US 8867681 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 21, 2014

Filed:

Sep. 29, 2011
Applicant:

Hiroshi Yoshida, Fukuoka, JP;

Inventor:

Hiroshi Yoshida, Fukuoka, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); G06F 1/12 (2006.01); H04J 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 1/12 (2013.01); H04J 3/0685 (2013.01);
Abstract

A transmission system which couples a plurality of transmission devices to a control device includes a first transmission device which is one of the plurality of transmission devices; a first calculation circuit which calculates a first difference value indicating a frequency difference value between a common clock supplied from the control device and a first clock as a clock used in the first transmission device; and a transmitter which reports the first difference value to a second transmission device other than the first transmission device, wherein the second transmission device comprises: a second calculation circuit which calculates a second difference value indicating a frequency difference value between the common clock and a second clock used in the second transmission device, and a frequency controller which controls an oscillator generating the second clock so that the second difference value approaches the first difference value reported from the first transmission device.


Find Patent Forward Citations

Yoshida, Hiroshi. (2014). Transmission system, transmission device, and clock synchronization method (U.S. Patent No. 8867681). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8867681

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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