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Patent Searching and Data


Title:
COMMUNICATION DEVICE, TIME CORRECTION METHOD, AND NETWORK SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/208020
Kind Code:
A1
Abstract:
A communication device 20 is provided with: a counter 205 for counting time; a counter value holding unit 206 for storing the counter value of the counter when a packet addressed to the communication device or a broadcasted packet is received; a packet analysis unit 202 for determining whether the packet is a cycle packet, which is a packet transmitted at regular cycles within the network, and, if the packet is a cycle packet, calculating the difference between the counter value stored by the counter value holding unit and the counter value indicating the original reception time of the cycle packet; and a correction time calculation unit 204 for calculating a correction value for correcting the disparity between the time of the communication device and the time of the device that is the transmission source of the cycle packet.

Inventors:
IWAYAMA, Tetsuharu (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/068278
Publication Date:
December 29, 2016
Filing Date:
June 24, 2015
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
G04G7/00; G04G5/00; H04L7/00; H04L12/70
Attorney, Agent or Firm:
TAKAMURA, Jun (Sakai International Patent Office, Toranomon Mitsui Building 8-1, Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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