Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input voltage to output current or vice versa
Reexamination Certificate
2005-03-08
2005-03-08
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input voltage to output current or vice versa
Reexamination Certificate
active
06864724
ABSTRACT:
A current to voltage conversion circuit for improving the speed of a photoelectric conversion device and frequency characteristics of an amplifier by improving a method for switching the gain of an amplification circuit for a photo detector integrated circuit (PDIC). Photocurrent generated in the photoelectric conversion device, such as a photodiode, is transferred to the amplifier by means of current mirroring, so as to raise a bias voltage to the photoelectric conversion device and enhance a response speed thereof. Further, the amount of current generated in the photoelectric conversion device is adjusted through control of a resistance ratio of a current mirror circuit. Therefore, a fixed feedback resistor can be used for the amplifier irrespective of modes, so as to enhance frequency characteristics of the amplifier.
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patent: 11186856 (1999-07-01), None
Gong Jung-Chul
Ha Chang-Woo
Kim Sang-Suk
Kwon Kyoung-Soo
Christensen O'Connor Johnson & Kindness PLLC
Nu Ton My-Trang
Samsung Electro-Mechanics Co. Ltd.
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