US Patent 7259631 Photoreceptor amplifier circuit and optical pickup
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Patent Inventor Names
Hitoshi Kiji0
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Patent abstract
A photoreceptor amplifier circuit comprises a differential amplifier circuit, which includes a differential transistor pair constituted of two transistors and active loads corresponding to said differential transistor pair, said differential amplifier circuit outputting a voltage according to an output current of a photoreceptor. The photoreceptor amplifier circuit further comprises a correcting current generation circuit for generating a correcting current based on a current difference between said two transistors and supplying the correcting current to said differential amplifier circuit.
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US Patent 07259631 Photoreceptor amplifier circuit and optical pickup US Patent 7259631 Photoreceptor amplifier circuit and optical pickup
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Patent Number
07259631
Patent Number
7259631
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US Patent 07259631 Photoreceptor amplifier circuit and optical pickup
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Is a
Patent jurisdiction
Patent number
07259631
Date of patent
August 21, 2007
Patent application number
11177455
Date Filed
July 7, 2005
Patent primary examiner
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