Miscellaneous active electrical nonlinear devices – circuits – and – External effect – Temperature
Reexamination Certificate
2007-07-31
2007-07-31
Philogene, Haissa (Department: 2821)
Miscellaneous active electrical nonlinear devices, circuits, and
External effect
Temperature
C327S083000, C327S093000, C327S100000, C398S192000, C398S208000, C315S112000, C315S149000, C315S291000
Reexamination Certificate
active
11070951
ABSTRACT:
An apparatus and method for generating an output signal that tracks the temperature coefficient of a light source are provided. A light source temperature coefficient tracking mechanism (e.g., a current source circuit) that generates an output signal, which tracks the temperature coefficient of the light source (e.g., temperature coefficient of a light emitting diode (LED)) is provided. A proportional to absolute temperature current source circuit (PTAT current source circuit) generates a first signal. A complimentary to absolute temperature current source circuit (CTAT current source circuit) generates a second signal. The output signal that tracks the temperature coefficient of the light source is based on the first signal and the second signal.
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UK Search Report dated Aug. 1, 2006 involving counterpart UK application No. GB0604033.1
Avago Technologies ECBU (IP) Singapore Pte. Ltd.
Philogene Haissa
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