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AssigneesHitachi, Ltd., Hitachi Car Engineering Co., Ltd.
InventorsMasahiro Matsumoto, Satoshi Shimada, Seikou Suzuki, Akihiko Saito, Atsushi Miyazaki, Keiji Hanzawa
Estimating the term…
A sensor adjusting circuit for adjusting a digital sensor, whose circuit scale is small and which can maintain high accuracy in a wide adjustment range is provided. A sensor adjusting circuit for adjusting an analog input signal inputted from a sensor and outputting it as another analog output signal in accordance with a physical quantity to be sensed, comprises: a first analog-to-digital converter having an analog integrator (2) for integrating the analog input signal, a comparator (3) for comparing an output of the analog integrator with a predetermined value, and a D/A converter (7) for outputting an output of the comparator as the input signal; and a second digital-to-analog converter (5) for converting the output of the comparator and outputting it as the analog output signal.
A sensor adjusting circuit for adjusting an analog input signal inputted from a sensor in accordance with a physical quantity to be sensed and outputting the analog input signal as another analog output signal, comprising:
A sensor adjusting circuit comprising an analog-to-digital converter, an operational unit for processing an output of said analog-to-digital converter by a prestored program, and a writable memory for holding data for adjustment,
A sensor adjusting circuit comprising an analog-to-digital converter, an operational unit for processing an output of said analog-to-digital converter by a prestored program, and a writable memory for holding data for adjustment,
A sensor adjusting circuit comprising an analog-to-digital converter, an operational unit for processing an output of said analog-to-digital converter by a prestored program, and a writable memory for holding data for adjustment,
A sensor adjusting circuit comprising an analog-to-digital converter, an operational unit for processing an output of said analog-to-digital converter by a prestored program, and a writable memory for holding data for adjustment,
A digital sensor adjusting circuit for adjusting an output of a sensor for sensing a physical quantity by processing the output of the sensor with prestored data for characteristic adjustment, comprising:
Dependencies are inferred from the claim text.