Apparatus for detecting physical quantity
First Claim
1. An apparatus for detecting a physical quantity to be detected, comprising:
- a plurality of sensing units each sensing the physical quantity to output a voltage signal changing depending on the sensed physical quantity;
a plurality of processors each sampling and holding, at intervals, the voltage signal outputted from each of the sensing units; and
a controller controlling the plurality of processors to permit the processors to perform sampling operations at predetermined different timings shifted from each other.
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Abstract
An apparatus is provided for concurrently detecting a plurality of physical quantities to be detected. The apparatus comprises plural sensing units, plural processors, and controller. The sensing units are formed on the same substrate to form a single sensor. Each sensing unit senses each physical quantity to output a voltage signal changing depending on each physical quantity sensed. Each of the processors samples and holds, at a predetermined frequency, the voltage signal outputted by each of the sensing units. Hence sampled and held voltage signals are produced and outputted from the apparatus as information indicative of the plurality of physical quantities. In the sampling and holding processing, a controller controls the plural processors so that the processors perform sampling operations at predetermined different phases shifted from each other during an interval defined by the predetermined frequency.
20 Citations
11 Claims
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1. An apparatus for detecting a physical quantity to be detected, comprising:
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a plurality of sensing units each sensing the physical quantity to output a voltage signal changing depending on the sensed physical quantity;
a plurality of processors each sampling and holding, at intervals, the voltage signal outputted from each of the sensing units; and
a controller controlling the plurality of processors to permit the processors to perform sampling operations at predetermined different timings shifted from each other. - View Dependent Claims (2, 3, 4)
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5. An apparatus for concurrently detecting a plurality of physical quantities to be detected, comprising:
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a plurality of sensing units being formed on a same substrate to form a single sensor and each sensing each of the physical quantities to output a voltage signal changing depending on each of the sensed physical quantities;
a plurality of processors each sampling and holding, at a predetermined frequency, the voltage signal outputted by each of the sensing units to produce sampled and held voltage signals to be outputted from the apparatus as information indicative of the plurality of physical quantities to be detected; and
a controller controlling the plurality of processors to allow the processors to perform sampling operations at predetermined different phases shifted from each other during an interval defined by the predetermined frequency. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification