Microphone aided vibrator tuning

Details Microphone aided vibrator tuning Microphone aided vibrator tuning

2006-10-17

2006-10-17

Le, Danh Cong (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S550100, C455S575100, C340S007600, C340S007630, C381S095000, C379S419000, C379S428010

Reexamination Certificate

active

07123948

ABSTRACT:
A method of tuning an alert device in a portable communication apparatus having a microphone. The method involves the steps of recording, through the microphone, an acoustic signal which is emitted by the alert device in response to a drive signal; deriving a characteristic value of the recorded signal; comparing the characteristic value with a reference value and generating a comparison result; and controlling the drive signal of the alert device in response to the comparison result.

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