Patent ID: 6046445
Filing Date: 2000-04-04
Classification: G01C

Abstract:
A light receiver circuit comprising:a photoelectric cell defining a photoelectric cell output terminal and arranged to produce an incident light current signal in response to light incident upon said photoelectric cell;a signal amplifier connected to said photoelectric cell output terminal and arranged to produce an amplified incident light signal;a controller connected to said signal amplifier and arranged to provide an output indicative of at least one characteristic of said incident light;an inductor defining an inductor input terminal and an inductor output terminal, wherein said inductor input terminal is connected to said photoelectric cell output terminal;a charge storage circuit connected to said inductor output terminal; anda switching circuit connected to said inductor output terminal and operative to switch between a light detection state and a charge storage state, wherein said light detection state causes a majority of current flowing through said inductor to bypass said charge storage circuit, and wherein said charge storage state causes a majority of current flowing through said inductor to pass through said charge storage circuit.