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Patent Searching and Data


Title:
TIME CONTROL DEVICE, TIME CONTROL METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2013/051447
Kind Code:
A1
Abstract:
The disclosure relates to: a time control device capable of synchronizing, with high precision, time information with a master device on a network; a time control method; and a program. This time control device comprises: a first calculation unit that calculates, on the basis of the times that messages transmitted and received between the device and the master device are transmitted and received, a first time difference indicating the difference between the master device time information and a slave device time information; a second calculation unit that calculates a second time difference on the basis of times that messages transmitted from the master device to the slave device are transmitted and received; a third calculation unit that calculates a third time difference, on the basis of the times that messages transmitted from the slave device to the master device are transmitted and received; and an adjustment unit that adjusts the slave device time information in accordance with a feedback control value generated on the basis of either the first or the third time difference, as selected. This disclosure can be applied, for example, to a PTP slave.

Inventors:
SOMEYA IKUO (JP)
HAMAMATSU TOSHIHIKO (JP)
KOJIMA TOSHIAKI (JP)
Application Number:
PCT/JP2012/074834
Publication Date:
April 11, 2013
Filing Date:
September 27, 2012
Export Citation:
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Assignee:
SONY CORP (JP)
International Classes:
G04G5/00; H04L7/00
Foreign References:
JP2007174680A2007-07-05
JP2007174676A2007-07-05
JP2010197320A2010-09-09
JP2001116865A2001-04-27
JP2010190635A2010-09-02
Attorney, Agent or Firm:
INAMOTO Yoshio et al. (JP)
Yoshio Inemoto (JP)
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Claims: