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Analog/digital converter and method for controlling the same

  • US 20030058152A1
  • Filed: 09/26/2002
  • Published: 03/27/2003
  • Est. Priority Date: 09/27/2001
  • Status: Active Grant
First Claim
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1. A method for controlling an analog/digital converter circuitry, comprising:

  • generating a digital signal by accumulating a predetermined increment at a predetermined time interval in accordance with a value of a first analog signal input to the analog/digital converter;

    converting the digital signal to a second analog signal;

    subtracting the second analog signal from the first analog signal and generating a detection signal in accordance with a subtraction result;

    selecting one of accumulation modes in accordance with the detection signal; and

    accumulating at the time interval and in the increment in accordance with the selected accumulation mode.

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