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AssigneesNippon Telegraph and Telephone Corporation, NTT Electronics Corporation
InventorsRyosuke Saito, Hisanobu Tanigawa, Takashi Goh, Ryoichi Kasahara
Estimating the term…
A low cost photocurrent monitoring circuit is provided. A photocurrent monitoring circuit, which performs monitoring by converting photocurrents output from a plurality of photodiodes (PD1 to PDn) into voltage, includes: a multiplexer circuit (MUX) for selecting one of input terminals to establish a connection of the selected input terminal to an output terminal, wherein the photodiodes (PD1 to PDn) are respectively connected to the input terminals; and an amplifier (LA) for converting a photocurrent which flows from a selected photodiode via the multiplexer circuit (MUX) into a voltage, and for outputting the voltage.
A photocurrent monitoring circuit, which performs monitoring by converting photocurrents output from a plurality of photodiodes into voltages and by performing time division multiplexing for the obtained voltages, comprising:
A circuit for monitoring photocurrents output from a plurality of photodiodes and converting the photocurrents to a multiplexed voltage signal, the circuit comprising:
A circuit for monitoring photocurrents output from a plurality of photodiodes and converting the photocurrents to a multiplexed voltage signal, the circuit comprising:
Dependencies are inferred from the claim text.