Nippondenso Co., Ltd.

Nippon Soken, Inc.

Masanori Ohsawa

Tadashi Hattori

Takamoto Watanabe

Muneaki Matsumoto

Yoshinori Ohtsuka

Kouichi Hoshino

Katsumi Nakamura

A magnetic detection device including at least one oscillator circuit having a magnetoresistance element which converts a change of magnetism detected into a digital signal and a comparator for comparing the digitalized oscillating frequency of the oscillator circuit with another digitalized oscillating frequency generated from another oscillating circuit by taking a ratio thereof or by detecting a phase difference between the pulse signals. Utilizing the magnetic detection device, the amount of change of magnetism can be stably detected with a high accuracy within a wide range of ambient usage temperatures. Also, a physical quantity detection device including the magnetic detection device which can detect any physical quantity with a high accuracy.

Magnetic detection device using an oscillator whose detection element is

Growing community of inventors

Nishio, Japan

Masanori Ohsawa