Touch location determination involving multiple touch location processes
First Claim
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1. A method of locating a stylus relative to a display having a matrix of addressable pixels, comprising:
- determining a first location of the stylus relative to the display using a first stylus location measurement technique;
determining a second location of the stylus relative to the display using a second stylus location measurement technique that is disparate from the first stylus location measurement technique, wherein the first location measurement technique is a coarse location measurement technique, and the second location measurement technique is a fine location measurement technique determined after the coarse location has been determined.
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Abstract
Touch location determination approaches involving a plurality of touch location techniques are described. Each touch location technique is capable of independently determining a location of a touch within a touch area of the touch sensitive device. The touch location determination made by at least one touch location technique is enhanced using touch location information associated with the touch acquired from one or more other touch location techniques. One touch location technique may use a different type of sensor, signal, and/or algorithm from the one or more other touch location techniques.
32 Citations
11 Claims
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1. A method of locating a stylus relative to a display having a matrix of addressable pixels, comprising:
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determining a first location of the stylus relative to the display using a first stylus location measurement technique; determining a second location of the stylus relative to the display using a second stylus location measurement technique that is disparate from the first stylus location measurement technique, wherein the first location measurement technique is a coarse location measurement technique, and the second location measurement technique is a fine location measurement technique determined after the coarse location has been determined. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A digitizer system comprising:
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a stylus; a sensor; and a controller communicatively coupled to the stylus and the digitizer, wherein the controller interacts with the stylus and the sensor to determine a first location of the stylus using a first stylus location measurement technique, and to determine a second location of the stylus using a second stylus location measurement technique, wherein the first location measurement technique is a coarse location measurement technique, and the second location measurement technique is a fine location measurement technique determined after the coarse location has been determined. - View Dependent Claims (8, 9, 10, 11)
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Specification