Sensor array and method of reducing power consumption of sensing device with auxiliary sensing unit and related electronic device
AssigneePixart Imaging Inc.
InventorEn-Feng Hsu
Life of this patent
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Abstract
There is provided a method of reducing power consumption of a gesture sensor. The method utilizes an auxiliary sensing device to detect whether an object exists in a sensing covering range of the gesture sensor, thereby determining operating states and power consumptions of the gesture sensor and the auxiliary sensing device. If the auxiliary sensing device does not detect that the object exists in the sensing covering range of the gesture sensor or the object moves, the gesture sensor is allowed to be in a low power consumption operating state, thereby reducing the power consumption.
Claims19
An electronic device, comprising:
- a sensing system having a first sensing device, for selectively detecting an object to generate a first detection result at a first frequency, wherein the first detection result indicates a state of motion of the object;
- a second sensing device for selectively detecting the object to generate a second detection result at a second frequency that is not lower than the first frequency, wherein the second detection result indicates whether the object is in a specific space;
- a light emitting device, for illuminating the object to make the first sensing device able to detect the state of motion of the object;
- and
- a control unit, coupled to the first sensing device and the second sensing device, for controlling operating states of the first sensing device and the second sensing device according to the first and the second detection results.
A sensor array, comprising:
- a plurality of first sensing units, for selectively detecting an object to generate a first detection result at a first frequency, wherein the first detection result indicates a state of motion of the object;
- and
- at least one second sensing unit, for selectively detecting the object to generate a second detection result at a second frequency that is not lower than the first frequency, wherein the second detection result indicates whether the object is in a specific space;
- wherein operating states of the plurality of first sensing units and the at least one second sensing unit are determined according to the first and the second detection results;
- and the plurality of first sensing units and the at least one second sensing unit are disposed on a same plane and in a same chip.
A method of controlling sensing devices, comprising:
- utilizing a first sensing device to selectively detect an object to generate a first detection result at a first frequency, wherein the first detection result indicates a state of motion of the object;
- utilizing a second sensing device to selectively detect the object to generate a second detection result at a second frequency that is not lower than the first frequency, wherein the second detection result indicates whether the object is in a specific space;
- and
- controlling operating states of the first sensing device and the second sensing device according to the first and the second detection results,
- wherein the first sensing device and the second sensing device are disposed on a same plane and in a same chip.
Dependencies are inferred from the claim text.