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:
Mar. 28, 2017

Filed:

Jan. 23, 2013
Applicant:

Sony Corporation, Tokyo, JP;

Inventors:

Ikuo Someya, Tokyo, JP;

Toshihiko Hamamatsu, Saitama, JP;

Toshiaki Kojima, Kanagawa, JP;

Assignee:

SONY CORPORATION, Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04L 12/24 (2006.01); H04J 3/06 (2006.01);
U.S. Cl.
CPC ...
H04L 41/04 (2013.01); H04J 3/0667 (2013.01); H04J 3/0685 (2013.01);
Abstract

A time control apparatus provided in a slave machine and synchronizing time information with time information of a master machine connected over a network includes: calculation units respectively calculating time difference candidates of the slave machine with respect to the master machine and network delays indicative of an average of times necessary for communication of first and second messages over the network based on transmission and reception times of the first messages which are transmitted from the master machine and received using the slave machine and transmission and reception times of the second messages which are transmitted from the slave machine and received using the master machine; a selection unit selecting one of the calculated time difference candidates as a time difference based on the calculated network delays; and an adjustment unit adjusting the time information of the slave machine based on the selected time difference.


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