Communications: electrical – Audible indication – Electronic
Reexamination Certificate
2006-04-04
2006-04-04
Nguyen, Phung T. (Department: 2632)
Communications: electrical
Audible indication
Electronic
C340S566000, C455S567000
Reexamination Certificate
active
07023326
ABSTRACT:
Disclosed is a vibration apparatus for generating vibration in a mobile terminal. The apparatus includes a vibrator for generating vibration; a frequency generator for generating a driving signal having a frequency within a predetermined frequency range in a predetermined time period; a driver for driving the vibrator using the driving signal provided from the frequency generator; and a frequency controller for periodically varying a frequency of the driving signal within the frequency range. Further, the vibration apparatus includes a vibration measurer for measuring vibration generated by the vibrator and providing the measured vibration values to the frequency controller. The frequency controller updates a frequency of the driving signal for driving the vibrator at a frequency indicating a maximum vibration value according to the measured vibration values.
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patent: 5894263 (1999-04-01), Shimakawa et al.
patent: 6281785 (2001-08-01), Hamaguchi
patent: 6509671 (2003-01-01), Takeda et al.
Dilworth & Barrese LLP
Nguyen Phung T.
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