Method and apparatus for controlling power supplied to a receive

Details Method and apparatus for controlling power supplied to a receive Method and apparatus for controlling power supplied to a receive

1994-10-17

1998-04-14

Pham, Chi H.

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

455 383, 34082544, H04B 116

Patent

active

057405298

ABSTRACT:
A synchronization controller identifies the timing of the group assigned to the receiver based on a synchronization signal detected by a preamble and synchronization signal detector. At this timing the power supply of a radio section is turned on. A selective calling number within the received group and pre-assigned selective calling number are compared in a selective calling number detector. The power supply of the radio section is immediately turned off, if the result of the comparison is non-coincidence. In this way, the battery saving efficiency can be enhanced by arranging to turn on the radio section only in the groups which are assigned to the receiver, and turning off immediately the power supply of the radio section when the receivers assigned selective calling number is not found in the receiver's assigned group.

REFERENCES:
patent: 4652875 (1987-03-01), Waki
patent: 4668949 (1987-05-01), Akahori et al.
patent: 4839639 (1989-06-01), Sato et al.
patent: 4964121 (1990-10-01), Moore
patent: 5001471 (1991-03-01), Snowden et al.
patent: 5251325 (1993-10-01), Davis et al.
patent: 5274843 (1993-12-01), Murai et al.
patent: 5381133 (1995-01-01), Erhart et al.

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