Title:
REMOTE MONITOR CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP3442685
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a remote monitor control system which can reduce the error between the internal timer of a master station and the internal timer of a slave station and the error between the internal timers of slave stations.
SOLUTION: The master station sends a time synchronization packet 14a at a certain time after sending a time synchronous setting packet 13, and a slave station after receiving and saving the time synchronous setting packet from the master station in a storage device receives the time synchronization packet and matches the time data of the received time synchronization packet against the time data of the stored time synchronous setting packet to adjust the internal timer when the match each other. In this case, the master station sends a packet in the transmission format consisting of a heater part and time data of minute data and an execution code as a time synchronization packet 14a to the slave station to shorten the data length of the time synchronization packet and shorten the transmission delay time, thereby decreasing the time error between the internal timer of the master station and that of slave station.
Inventors:
Kokonoe Youichi
Hiroaki Obata
Hiroaki Obata
Application Number:
JP13454399A
Publication Date:
September 02, 2003
Filing Date:
May 14, 1999
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04Q9/00; (IPC1-7): H04Q9/00
Domestic Patent References:
| JP5199565A | ||||
| JP1042380A | ||||
| JP239748A | ||||
| JP758807A | ||||
| JP2214398A | ||||
| JP6332605A |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)
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