FREE-SPACE MULTI-DIMENSIONAL ABSOLUTE POINTER WITH IMPROVED PERFORMANCE
First Claim
1. A system comprising:
- a handheld device having a pixelated sensor, an optical filter for passing a predetermined frequency band of radiation to the sensor, and a transmitter;
electronic equipment having a display;
at least two spaced-apart markers, each of which are positioned proximate to the display, the markers providing radiation at the frequency band passed by the optical filter,wherein the handheld device includes a processor coupled to receive image data of the markers from the sensor to compute coordinate data from the image data, the coordinate data requiring less data than the image data, the processor being coupled to the transmitter to transmit the coordinate data to the electronic equipment.
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Accused Products
Abstract
According to one embodiment, a system includes a handheld device having a pixelated sensor, an optical filter for passing a predetermined frequency band of radiation to the sensor and a transmitter, an electronic equipment having a display, and at least two spaced-apart markers, where each of which are positioned proximate to the display. The markers provide radiation at the frequency band passed by the optical filter. The handheld device includes a processor coupled to receive image data of the markers from the sensor for computing coordinate data from the image data. The coordinate data requires less data than the image data. The processor is coupled to the transmitter to transmit the coordinate data to the electronic equipment. Other methods and apparatuses are also described.
336 Citations
20 Claims
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1. A system comprising:
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a handheld device having a pixelated sensor, an optical filter for passing a predetermined frequency band of radiation to the sensor, and a transmitter; electronic equipment having a display; at least two spaced-apart markers, each of which are positioned proximate to the display, the markers providing radiation at the frequency band passed by the optical filter, wherein the handheld device includes a processor coupled to receive image data of the markers from the sensor to compute coordinate data from the image data, the coordinate data requiring less data than the image data, the processor being coupled to the transmitter to transmit the coordinate data to the electronic equipment. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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3. A method for stabilizing a position of a cursor on a display in which coordinates of the cursor (X,Y) are determined using one or more signals from an input pointing device in conjunction with a following procedure performed for each X, Y display coordinate:
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determining whether a cursor speed is less than a predetermined threshold value; and while the cursor speed is less than a pre-defined threshold value, obtaining a current coordinate by averaging previous N coordinate values, wherein N is a pre-defined value, and wherein the coordinate values are derived from the signals from the input device.
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Specification