Apparatus and method for display control using ambient light...

Details Apparatus and method for display control using ambient light... Apparatus and method for display control using ambient light...

2011-01-11

2011-01-11

Hannaher, Constantine (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C345S207000

Reexamination Certificate

active

07868294

ABSTRACT:
A system having an infrared receiver is shown, where the system includes an infrared receiver circuit configured to receive an infrared data signal using a receive photodiode and compensate for an ambient light level incident on the receive photodiode by generating a DC ambient current signal, where the DC ambient current signal is accessible external to the infrared receiver circuit. The system also includes a control circuit configured to receive the DC ambient current signal and, responsive thereto, determine the ambient light level and generate a display illumination control signal accordingly.

REFERENCES:
patent: 2005/0190142 (2005-09-01), Ferguson
patent: 2008/0219672 (2008-09-01), Tam et al.

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