AUTOMATIC DATA COLLECTION SYSTEM OF LOW POWER CONSUMPTION

Japanese Patent JP3730863

B2

PROBLEM TO BE SOLVED: To solve the problem of a battery being noticeably consumed because the operating time of communication terminals is long.
SOLUTION: When collecting data on a meter to be connected to the communication terminals 5, 6 and 7 by a center terminal, the center terminal, an exchange 1, a public base station 3 and a repeating base station 4 or the center terminal, the exchange 1 and the repeating base station connected directly to the exchange are connected through a public line. An interface for the public base station of the repeating base station is connected by radio, ISDN or DSL. The repeating base station and the communication terminals are connected by single radio, using an inter-slave unit direct call mode or a self-management mode, and communication between the repeating base station and one of the communication terminals is fetched simultaneously by the other communication terminals. Furthermore, by adding information a time, when the communication terminal comes into a waiting state to the communication contents, all the communication terminals under the repeating base station come into the waiting state in a period designated by the added time information, thereby power consumption by the communication terminals is reduced.

Koji Sato

JP2000393417A

January 05, 2006

December 25, 2000

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NEC Personal Products Co., Ltd.

G08C17/00; H04M11/00; H04B7/26; (IPC1-7): H04M11/00; G08C17/00; H04B7/26

JP2000048292A
JP9200833A
JP9084117A

Masahiko Desk
Masashi Kudo
Yasuhisa Tanizawa
Naoki Kyomoto
Shuichi Fukuda

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