Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input current or voltage to output frequency
Reexamination Certificate
2006-06-06
2006-06-06
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input current or voltage to output frequency
C327S514000, C330S308000, C250S2140AG
Reexamination Certificate
active
07057423
ABSTRACT:
A current-voltage transforming circuit used with a photo detector integrated circuit includes a photo detector to detect a photo signal (laser beam signal) to generate a photo current, an amplifier to amplify the photo current, which corresponds to the photo signal, an emitter follower to receive an output of the amplifier, an output buffer to receive an output of the emitter follower, a current detecting limiter unit having an input terminal and an output terminal and turned on to generate a limiter current when the detected current outputted from the amplifier is greater than a predetermined current, and a feedback resistor connected between the photo detector and an output terminal of the output buffer.
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Ha Chang-Woo
Ko Joo-Yul
Kwon Kyoung-Soo
Park Deuk-Hee
Gottlieb Rackman & Reisman P.C.
Lam Tuan T.
Samsung Electro-Mechanics Co. Ltd.
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