Sensor apparatus
First Claim
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1. A sensor apparatus comprising:
- a sensor circuit that detects a physical quantity applied thereto and outputs a detection signal indicative of the detected physical quantity; and
a signal processing circuit that processes the detection signal received from the sensor circuit,wherein the signal processing circuit includes a logarithmic converter, an analog-to-digital converter, and an antilogarithmic converter,wherein the logarithmic converter produces a logarithmic signal corresponding to a logarithm of the detection signal,wherein the analog-to-digital converter digitalizes the logarithmic signal, andwherein the antilogarithmic converter produces an antilogarithmic signal corresponding to an antilogarithm of the digitalized logarithmic signal.
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Abstract
A sensor apparatus includes a sensor circuit and a nonlinear signal processing circuit. The sensor circuit detects a physical quantity and outputs a detection signal indicative of the detected physical quantity. The signal processing circuit includes a logarithmic converter, an analog-to-digital converter, and an antilogarithmic converter. The logarithmic converter produces a logarithm signal corresponding to a logarithm of the detection signal. The analog-to-digital converter digitalizes the logarithm signal. The antilogarithmic converter produces an antilogarithmic signal corresponding to an antilogarithm of the digitalized logarithm signal.
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8 Claims
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1. A sensor apparatus comprising:
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a sensor circuit that detects a physical quantity applied thereto and outputs a detection signal indicative of the detected physical quantity; and a signal processing circuit that processes the detection signal received from the sensor circuit, wherein the signal processing circuit includes a logarithmic converter, an analog-to-digital converter, and an antilogarithmic converter, wherein the logarithmic converter produces a logarithmic signal corresponding to a logarithm of the detection signal, wherein the analog-to-digital converter digitalizes the logarithmic signal, and wherein the antilogarithmic converter produces an antilogarithmic signal corresponding to an antilogarithm of the digitalized logarithmic signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification