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Title:
METHOD AND DEVICE FOR ADJUSTING TIME OF DISTRIBUTED SYSTEM
Document Type and Number:
Japanese Patent JP2004078874
Kind Code:
A
Abstract:

To perform time adjustment in each computer with high precision by selecting a median regarding a time adjustment system of a distribution system.

A time information reception part 1 receives pieces of time information from respective computers from a transmission line 16, a median selection part 2 selects the median in each piece of data, and a system time information setting part 3 sets the median as the time of the present system time and substitutes the set time for the time which has been used. A time information update part 4 updates the time information with a prescribed period, and a time information transmission part 7 transmits the updated time information to the transmission line 16. Since the median is selected, no logic such as selection by the majority or comparison with a set value exists, and the highly precise time adjustment is performed by a simplified system.


Inventors:
MORITO TOSHIKI
ONO MASAHIRO
SHIMURA KOJI
IWASAKI TOMOJI
Application Number:
JP2002296070A
Publication Date:
March 11, 2004
Filing Date:
October 09, 2002
Export Citation:
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Assignee:
NAT SPACE DEV AGENCY
MITSUBISHI HEAVY IND LTD
International Classes:
G04C9/04; G04G5/00; G06F1/14; G06F13/00; G06F15/177; (IPC1-7): G06F15/177; G04G5/00; G06F1/14
Attorney, Agent or Firm:
Shin Ishikawa
Shigemitsu Tanaka