Radio selective calling receiver capable of checking time period

Details Radio selective calling receiver capable of checking time period Radio selective calling receiver capable of checking time period

1996-09-24

1998-12-08

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

455421, H04B 700, H04B 100, H04Q 700

Patent

active

058476571

ABSTRACT:
A radio selective calling receiver has a function of determining, when synchronization is established by a frame synchronization signal received from a radio base station, that the radio selective calling receiver is within a coverage zone of the radio base station, and determining, when the frame synchronization signal is not received within a predetermined time period after a step-out state is set, that the radio selective calling receiver is outside the coverage zone of the radio base station. The receiver includes a timer and a notification device. The timer starts to count when the step-out state is set and counts a time until the frame synchronization signal is received. The notification device notifies a count value when the frame synchronization signal is received after the lapse of the predetermined time period set in the timer.

REFERENCES:
patent: 5148160 (1992-09-01), Kudoh
patent: 5182553 (1993-01-01), Kung
patent: 5511231 (1996-04-01), Ono

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