Motorola Corporation

Sarah J Fain

Kenneth S Lerner

Robert Mark Gorday

Karen Hendricks

A method and apparatus in a receiver (110) for use in a selective call communication system (100) conserves battery power. The system (100) utilizes a signaling protocol (300) comprising a first bit and frame sync (320) transmitted at a predetermined baud rate, followed by a second bit and frame sync (322) transmitted at a second baud rate. The first bit and frame sync (320) defines the second baud rate. The receiver (110) synchronizes (406, 410) with the first bit and frame sync (320), determines (416) therefrom the second baud rate, and battery saves (420) during transmission of the second bit and frame sync (322) in response to determining that the second baud rate is equal to the predetermined baud rate.

Method and apparatus for batery saving in a communication receiver

A system and method for minimizing current drain of a battery in a portable receiver, such as a selective call receiver (110), by monitoring the warm-up time of a component (130) of the receiver (116), such as an oscillator (134), to periodically determine changes in the warm-up time of the component (130). That component of the receiver is powered up prior to designated time slots (440) by a time period (Wt) according to the dynamic changes in receiver warm-up time.

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Lake Worth, FL, United States of America

Sarah J Fain