Calculation device, movement detection device, and electronic instrument
AssigneeRohm Co., Ltd.
InventorsTakuya Tsuchikawa, Yoshitsugu Uedaira, Yuichiro Nakata, Junji Fujino
Life of this patent
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Abstract
The calculation device (36) according to the present invention receives a plurality of reflected light intensity information for indicating the intensity of each reflected light which reaches a single light receiver via a reflecting object, the reflected light having been emitted in sequence from a plurality of light emitters (31 through 33) provided in mutually different positions, computes a phase difference of an intensity variation which occurs among the reflected light, and determines a movement of the reflecting object on the basis of the calculation result.
Claims20
A calculation device comprising:
- a determination unit for receiving a plurality of reflected light intensity information for indicating the intensity of each reflected light which reaches a single light receiver via a reflecting object, the reflected light having been emitted in sequence from a plurality of light emitters provided in mutually different positions, computing a phase difference of an intensity variation which occurs among the reflected light, and determining a movement of said reflecting object on the basis of the calculation result.
A movement detection device comprising:
- a plurality of light emitters from which light is emitted in sequence, the light emitters being provided in mutually different positions;
- a single light receiver for detecting each reflected light that is emitted in sequence from said plurality of light emitters and incident via a reflecting object;
- a reflected light intensity information generation unit for generating a plurality of reflected light intensity information for indicating the intensity of each reflected light detected by said light receiver;
- and
- a calculation device for receiving said plurality of reflected light intensity information generated by said reflected light intensity information generation unit, computing a phase difference of an intensity variation which occurs among the reflected light, and determining a movement of said reflecting object on the basis of the computation result.
An electronic instrument comprising:
- a movement detection device for detecting movement of a reflecting object;
- and
- a display unit for outputting an image on the basis of the movement of said reflecting object detected by said movement detection device;
- wherein said movement detection device comprises:
- a plurality of light emitters from which light is emitted in sequence, the light emitters being provided in mutually different positions;
- a single light receiver for detecting each reflected light that is emitted in sequence from said plurality of light emitters and incident via said reflecting object;
- a reflected light intensity information generation unit for generating a plurality of reflected light intensity information for indicating the intensity of each reflected light detected by said light receiver;
- and
- a calculation device for receiving said plurality of reflected light intensity information generated by said reflected light intensity information generation unit, computing a phase difference of an intensity variation which occurs among the reflected light, and determining a movement of said reflecting object on the basis of the computation result.
A program read and executed by a calculation device for receiving a plurality of reflected light intensity information for indicating the intensity of each reflected light which reaches a single light receiver via a reflecting object, the reflected light having been emitted in sequence from a plurality of light emitters provided in mutually different positions, the program thereby causing said calculation device to function as a means for computing a phase difference of an intensity variation which occurs between each reflected light, and determining a movement of said reflecting object on the basis of the computation result.
A calculation device comprising:
- a determination unit for receiving reflected light intensity information for indicating the intensity of a reflected light that reaches a light receiver from a light emitter via a reflecting object, and determining the distance of said reflecting object on the basis of the intensity of said reflected light.
A movement detection device comprising:
- a light emitter;
- a light receiver for detecting reflected light that is emitted from said light emitter and incident via a reflecting object;
- a reflected light intensity information generation unit for generating reflected light intensity information for indicating the intensity of the reflected light detected by said light receiver;
- and
- a calculation device for receiving said reflected light intensity information generated by said reflected light intensity information generation unit and determining the distance of said reflecting object on the basis of the intensity of said reflected light.
An electronic instrument comprising:
- a movement detection device for detecting movement of a reflecting object;
- and
- a display unit for outputting an image on the basis of the movement of said reflecting object detected by said movement detection device;
- wherein
- said movement detection device comprises:
- a light emitter;
- a light receiver for detecting reflected light that is emitted from said light emitter and incident via a reflecting object;
- a reflected light intensity information generation unit for generating reflected light intensity information for indicating the intensity of the reflected light detected by said light receiver;
- and
- a calculation device for receiving said reflected light intensity information generated by said reflected light intensity information generation unit and determining the distance of said reflecting object on the basis of the intensity of said reflected light.
A program read and executed by a calculation device for receiving reflected light intensity information for indicating the intensity of reflected light which reaches a light receiver from a light emitter via a reflecting object, the program thereby causing said calculation device to function as a means for determining the distance of said reflecting object on the basis of the intensity of said reflected light.
An electronic instrument comprising:
- a proximity sensor for determining a movement of said reflecting object, the proximity sensor comprising a plurality of light emitters for emitting infrared light, the light emitters being provided in mutually different positions;
- and a light receiver for receiving reflected light that is emitted from said plurality of light emitters and reflected by a reflecting object;
- an illuminance sensor for measuring the illuminance of ambient visible light;
- a timing controller for controlling the action timing of said proximity sensor and said illuminance sensor;
- and
- a controller for performing a predetermined calculation on the basis of the output of said proximity sensor and said illuminance sensor and displaying the calculation result on a display unit.
Dependencies are inferred from the claim text.