Circuit for detecting ambient light on a display

Details Circuit for detecting ambient light on a display Circuit for detecting ambient light on a display

2005-12-13

2005-12-13

Nelms, David (Department: 2818)

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

C257S040000

Reexamination Certificate

active

06975008

ABSTRACT:
A circuit for detecting ambient light on a display includes a light integrating photosensor circuit having a photosensor and being responsive to ambient light for periodically producing successive photo signals representing the intensity of the ambient light; and an averaging circuit for receiving the successive photo signals and producing an average ambient light signal representing a continuous running average of the successive photo signals.

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