Electronic equipment with geomagnetic direction sensor
AssigneeCitizen Watch Co., Ltd.
InventorsTomomi Murakami, Hiroyuki Kihara, Kazuya Mitaki
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Abstract
Electronic equipment has, in its case, a flux gate magnetic sensor with an excitation coil and a sensing coil wound around an annular magnetic core made of high permeability material, an integrated circuit including a magnetic field detector, cooperating with the magnetic sensor for detecting an external magnetic field and an operation circuit for operating the geomagnetic direction, a display device for displaying at least the geomagnetic direction, and a power source battery. The flux gate magnetic sensor is arranged along the inner surface of the case and the battery is arranged within the annular magnetic core of the magnetic sensor.
Claims10
Electronic equipment comprising a case, a flux gate magnetic sensor with an excitation coil and a sensing coil wound around an annular magnetic core made of high permeability material, an integrated circuit including a magnetic field detector operably connected with said magnetic sensor for detecting an external magnetic field and an operation circuit operably connecting said magnetic sensor and said integrated circuit for determining geomagnetic direction, a display device for displaying at least the geomagnetic direction, and a power source battery;
- wherein said flux gate magnetic sensor is arranged along an inner surface of said case and said battery is arranged within said annular magnetic core of said magnetic sensor.
Dependencies are inferred from the claim text.