Paging receiver having a speaker and a led alternatively...

Details Paging receiver having a speaker and a led alternatively... Paging receiver having a speaker and a led alternatively...

H - Electricity

04

B

H04B 1/16 (2006.01) G08B 3/10 (2006.01) G08B 29/18 (2006.01)

Patent

CA 2047541

A paging receiver having alerting means implemented as a speaker and a light emitting diode (LED). The paging receiver has a decoder for outputting a pair of periodically varying drive signals on determining that a call meant for the receiver has been received, a speaker drive for causing a speaker to sound in the pattern of either one of two drive pattern signals, and an LED driver for turning on the LED in the other pattern. The drive periods of the two drive pattern signals are arranged alternately with each other and such that they do not overlap each other, whereby the luminance of the LED is maintained at a sufficiently high level even when a battery powering the paging receiver reaches the last stage of its service life.

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