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:
Apr. 12, 2016

Filed:

Feb. 25, 2011
Applicant:

Yasuomi Ando, Tokyo, JP;

Inventor:

Yasuomi Ando, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 3/06 (2006.01); H04L 12/40 (2006.01); H04L 12/403 (2006.01);
U.S. Cl.
CPC ...
H04J 3/0658 (2013.01); H04J 3/0682 (2013.01); H04L 12/403 (2013.01); H04L 12/40019 (2013.01); H04L 12/4035 (2013.01); G06F 2213/0038 (2013.01); H04L 2012/4026 (2013.01);
Abstract

A master apparatus repeatedly executes an offset value calculation notification sequence in which a calculation of an offset value for correcting a transmission path delay is implemented after communications with the plurality of slave apparatuses, and a notification of the offset value calculated to the plurality of slave apparatuses is implemented Every time the offset value calculation notification sequence is executed, the master apparatus notifies the slave apparatuses of a sequence identifier which is the identifier of the offset value calculation notification sequence. Furthermore, the master apparatus selects a sequence identifier from among two or more sequence identifiers already notified to each slave apparatus, notifies the selected sequence identifier to each slave apparatus, and instructs each slave apparatus to use, for time-synchronization, an offset value notified in the offset value calculation notification sequence corresponding to the selected sequence identifier.


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