Wireless optical input device
First Claim
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1. An optical sensing assembly for a computer input device configured to receive power from a self-contained power source, the optical sensing assembly comprising:
- a photo-sensitive element configured to receive reflected light from a light source to produce first image data associated with a first image and second image data associated with a second image;
an image data processing logic coupled to the photo-sensitive element and configured to detect activity based on the first and second image data and to determine whether the detected activity qualifies as false activity based on a prior activity and a stored pattern of a plurality of activities; and
a power control logic operatively coupled to the image data processing logic and configured to implement a native power control mode wherein an internal algorithm changes the power consumption of the optical sensing assembly from a full power mode to one or more lower power modes based on the determination of whether the detected activity qualifies as false activity.
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Abstract
One embodiment of the present invention provides a wireless input device that employs optical sensing to effect the likes of cursor movement and scrolling. Power management techniques can be optionally employed to avoid premature depletion of the wireless input device'"'"'s power source. Another embodiment of the present invention provides a wireless device having a power management algorithm controlling its power consumption. Another embodiment of the present invention provides a method for managing the power consumption of a wireless device.
22 Citations
20 Claims
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1. An optical sensing assembly for a computer input device configured to receive power from a self-contained power source, the optical sensing assembly comprising:
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a photo-sensitive element configured to receive reflected light from a light source to produce first image data associated with a first image and second image data associated with a second image; an image data processing logic coupled to the photo-sensitive element and configured to detect activity based on the first and second image data and to determine whether the detected activity qualifies as false activity based on a prior activity and a stored pattern of a plurality of activities; and a power control logic operatively coupled to the image data processing logic and configured to implement a native power control mode wherein an internal algorithm changes the power consumption of the optical sensing assembly from a full power mode to one or more lower power modes based on the determination of whether the detected activity qualifies as false activity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting movement with a photo sensing device configured to receive power from a self-contained power source, the method comprising:
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determining image difference data from differences between first image data and second image data; detecting activity based on the image difference data; determining whether the detected activity qualifies as false activity based on a prior activity and a stored pattern of a plurality of activities; and implementing a native power control mode wherein an internal algorithm changes the power consumption of the photo-sensing device from a full power mode to one or more lower power modes based on the determination of whether the detected activity qualifies as false activity. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A non-transitory computer readable storage medium having computer program instructions and data embodied thereon, the computer program instructions and data to configure a processor to perform operations comprising:
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determining image difference data from differences between first image data and second image data; detecting activity based on the image difference data; determining whether the detected activity qualifies as false activity based on a prior activity and a stored pattern of a plurality of activities; and implementing a native power control mode wherein an internal algorithm changes the power consumption of the photo-sensing device from a full power mode to one or more lower power modes based on the determination of whether the detected activity qualifies as false activity. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification