Abstract: Provided is a Hall element that detects a magnetic field. The Hall element includes a substrate including a semiconductor region, a first drive electrode arranged on the substrate, a first ground electrode arranged on the substrate separately from the first drive electrode in a first direction, a second ground electrode arranged on the substrate separately from the first drive electrode in a second direction different from the first direction, and a detection electrode group including a first electrode group that detects a Hall voltage generated by a current of components perpendicular to a surface of the substrate, the current flowing from the first drive electrode to the first ground electrode and the second ground electrode.

Abstract: A magnetic sensor that includes a Hall element; a switch circuit configured to switch a direction of a drive current supplied to the Hall element between a first direction and a second direction; a magnetic field detection circuit configured to execute a detection operation for detecting a target magnetic field acting on the Hall element, based on a first difference between a Hall voltage generated in the Hall element when the drive current is supplied to the Hall element in the first direction and a Hall voltage generated in the Hall element when the drive current is supplied to the Hall element in the second direction; and a test magnetic field generation circuit configured to generate a test magnetic field different from the target magnetic field in a test operation.

Abstract: Provided is a Hall element that detects a magnetic field. The Hall element includes a substrate including a semiconductor region, a first drive electrode arranged on the substrate, a first ground electrode arranged on the substrate separately from the first drive electrode in a first direction, a second ground electrode arranged on the substrate separately from the first drive electrode in a second direction different from the first direction, and a detection electrode group including a first electrode group that detects a Hall voltage generated by a current of components perpendicular to a surface of the substrate, the current flowing from the first drive electrode to the first ground electrode and the second ground electrode.

Abstract: An electronic device includes: a first housing and a second housing provided to be capable of being displaced between a first state in which the first major surfaces thereof face each other and a second state in which the second major surfaces thereof face each other; a magnetic detection part provided in the first housing; a magnet provided in the second housing; and a control part configured to determine the first state and the second state based on an output of the magnetic detection part. The magnet is disposed such that a magnetization direction thereof is orthogonal to the first major surface and the second major surface of the second housing, and the magnetic detection part includes a first magnetic sensor and a second magnetic sensor arranged along a direction normal to the first major surface and the second major surface of the first housing.

Abstract: An electronic device includes: a first housing and a second housing provided to be capable of being displaced between a first state in which the first major surfaces thereof face each other and a second state in which the second major surfaces thereof face each other; a magnetic detection part provided in the first housing; a magnet provided in the second housing; and a control part configured to determine the first state and the second state based on an output of the magnetic detection part. The magnet is disposed such that a magnetization direction thereof is orthogonal to the first major surface and the second major surface of the second housing, and the magnetic detection part includes a first magnetic sensor and a second magnetic sensor arranged along a direction normal to the first major surface and the second major surface of the first housing.

Abstract: An optical sensor is provided according to an embodiment of the present disclosure. The optical sensor includes a first photodiode, a second photodiode having characteristics different from characteristics of the first photodiode, filters configured to block or transmit a specific wavelength range of the light, and an output circuit configured to correct a sensitivity deviation, which may be caused when one of the filters is used for the first photodiode, based on a sensitivity deviation, which may be caused when the other filter of the same kind as the one filter is used for the second photodiode, and output only the specific wavelength range of the light.

Abstract: An optical sensor is provided according to an embodiment of the present disclosure. The optical sensor includes a first photodiode, a second photodiode having characteristics different from characteristics of the first photodiode, filters configured to block or transmit a specific wavelength range of the light, and an output circuit configured to correct a sensitivity deviation, which may be caused when one of the filters is used for the first photodiode, based on a sensitivity deviation, which may be caused when the other filter of the same kind as the one filter is used for the second photodiode, and output only the specific wavelength range of the light.

Abstract: An electronic circuit for detecting magnetism includes: a detection unit in which at least three detection blocks including at least one magnetic field detection element are arranged, wherein by selecting first and second detection blocks from among the at least three detection blocks based on a detection target object, a distance between the first and second detection blocks becomes a distance suitable for the detected target object; a control unit configured to select the first and second detection blocks; and a switching unit configured to connect the selected first and second detection blocks to an output of the electronic circuit based on a control operation of the control unit.

Abstract: An optical sensor is provided according to an embodiment of the present disclosure. The optical sensor includes a first photodiode, a second photodiode having characteristics different from characteristics of the first photodiode, filters configured to block or transmit a specific wavelength range of the light, and an output circuit configured to correct a sensitivity deviation, which may be caused when one of the filters is used for the first photodiode, based on a sensitivity deviation, which may be caused when the other filter of the same kind as the one filter is used for the second photodiode, and output only the specific wavelength range of the light.

Abstract: An electronic circuit for detecting magnetism includes: a detection unit in which at least three detection blocks including at least one magnetic field detection element are arranged, wherein by selecting first and second detection blocks from among the at least three detection blocks based on a detection target object, a distance between the first and second detection blocks becomes a distance suitable for the detected target object; a control unit configured to select the first and second detection blocks; and a switching unit configured to connect the selected first and second detection blocks to an output of the electronic circuit based on a control operation of the control unit.