Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-04-19
2011-11-01
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S208100, C250S338100, C348S307000, C327S172000
Reexamination Certificate
active
08049155
ABSTRACT:
An active infrared induction instrument powered by a dry battery capable of reducing power consumption through the adjustment of the emitter pulse width. The infrared emitting LED emits infrared signals, which, after being reflected by an object, are received by the infrared photodiode. The infrared signals received by the infrared photodiode then enter an integrated circuit chip through a comparator. The pulse widths of the infrared emission pulse signals are dynamically adjusted after the width of the pulse series is received by the discrimination chip, thus reducing the emission power consumption to save energy.
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International Search Report: PCT/IB2007/001020.
The Examination Report issued by the Intellectual Property Office of New Zealand Apr. 30, 2010, Patent Application No. 572025, 2 pages.
Epps Georgia
Foley & Lardner LLP
Shanghai Kohler Electronics, Ltd.
Williams Don
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