Title:
DISTRIBUTION DEVICE, DISTRIBUTION SYSTEM, AND DISTRIBUTION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/199729
Kind Code:
A1
Abstract:
Provided is a distribution device that distributes time information to one or more sensor apparatus and includes: storage that stores correction-amount information expressing a correction amount which corrects the distribution device local time in one sitting; an acquisition unit that acquires a reference time; a calculation unit that obtains the difference between the acquired reference time and the local time; a correction unit that corrects the local time by the correction amount when the obtained difference is larger than the correction amount; and a distributor that distributes time information expressing the corrected local time to the sensor apparatus.
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Inventors:
KISHIRO MASAMI (JP)
MURAKAMI KEIZO (JP)
MURAKAMI KEIZO (JP)
Application Number:
PCT/JP2014/061328
Publication Date:
December 18, 2014
Filing Date:
April 22, 2014
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H04L7/00; G04G5/00
Foreign References:
| JPH11212926A | 1999-08-06 | |||
| JP2006349364A | 2006-12-28 | |||
| JP2007263753A | 2007-10-11 | |||
| JP2013096974A | 2013-05-20 | |||
| JP2002031693A | 2002-01-31 | |||
| JP2012211881A | 2012-11-01 | |||
| JP2011214937A | 2011-10-27 | |||
| JP2007018211A | 2007-01-25 | |||
| JP2010278546A | 2010-12-09 | |||
| JP2003110562A | 2003-04-11 | |||
| JP2012202897A | 2012-10-22 |
Other References:
SATORU SALCAUE ET AL.: "Applied MEMS Micro-vibration Sensors and Structural Health Monitoring", FUJI ELECTRIC JOURNAL, vol. 84, no. 4, 2011, pages 269 - 273
MAKOTO SUZULD ET AL.: "Research Trends in Wireless Sensor Network Time Synchronization Technology", TECHNICAL RESEARCH REPORT NO. 2008001, 24 April 2008 (2008-04-24)
"The Institute of Electronics, Information and Communication Engineers (Knowledge Base", 2010, INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS
SHOJI YOSHIDA ET AL.: "Development of Real-time Ethernet (registered trademark) Optical Transmission to Provide with Sampling Synchronization by IEEE1588", 31 August 2010, THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN
See also references of EP 3009897A4
MAKOTO SUZULD ET AL.: "Research Trends in Wireless Sensor Network Time Synchronization Technology", TECHNICAL RESEARCH REPORT NO. 2008001, 24 April 2008 (2008-04-24)
"The Institute of Electronics, Information and Communication Engineers (Knowledge Base", 2010, INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS
SHOJI YOSHIDA ET AL.: "Development of Real-time Ethernet (registered trademark) Optical Transmission to Provide with Sampling Synchronization by IEEE1588", 31 August 2010, THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN
See also references of EP 3009897A4
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
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