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BIOLOGICAL SENSOR

  • US 20150141840A1
  • Filed: 01/20/2015
  • Published: 05/21/2015
  • Est. Priority Date: 07/20/2012
  • Status: Active Grant
First Claim
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1. A biological sensor comprising:

  • a driving signal generator that generates a driving signal;

    a light-emitting element that emits light in response to the driving signal;

    a light-receiving element that outputs a detection signal based on an intensity of received light;

    an amplifying circuit that includes at least one amplifier and that receives and amplifies the detection signal outputted from the light-receiving element;

    an offset generator circuit that generates an offset voltage that is applied to the at least one amplifier to offset a reference potential of the at least one amplifier; and

    a controller configured to process the amplified detection signal to obtain biological information.

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