Portable electronic apparatus with controlled light sources

Details Portable electronic apparatus with controlled light sources Portable electronic apparatus with controlled light sources

2007-07-17

2007-07-17

Goins, Davetta W. (Department: 2612)

Communications: electrical

Visual indication

C340S693400, C340S815450, C340S815520, C315S291000, C315S307000, C362S510000, C362S543000

Reexamination Certificate

active

10855848

ABSTRACT:
A portable electronic apparatus has light sources that can be controlled to produce decorative or informational effects. Each light source is controlled by the combination of an enable signal from a 1-bit port of a controller and a PWM signal from a PWM signal from the controller. Each PWM signal is used to control a plurality of light sources in parallel whereas each 1-bit enabled signal controls, generally, only one. The light sources are preferably arranged to shine through soft structures on the apparatus.

REFERENCES:
patent: 6523976 (2003-02-01), Turnbull et al.
patent: 6777891 (2004-08-01), Lys et al.
patent: 6897624 (2005-05-01), Lys et al.

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