Multi-touch and single touch detection
First Claim
Patent Images
1. An input device comprising:
- a touch sensitive sensor operative to sense finger touch;
a detection unit controllable to apply a single touch detection method over at least one area of the touch sensitive sensor and a multi-touch detection method over at least one other area of same touch sensitive sensor; and
a controller operative to set the areas of single touch and multi-touch detection, wherein a refresh rate associated with the touch sensitive sensor is responsive of a size of the area where the multi-touch method is applied and wherein limiting size of the area where the multi-touch method is applied provides for increasing the refresh rate of the input device.
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Abstract
An input device comprises a touch sensitive sensor operative to sense finger touch, a detection unit controllable to apply a single touch detection method over at least one area of the touch sensitive sensor and a multi-touch detection method over at least one other area of same touch sensitive sensor, and a controller operative to set the areas of single touch and multi-touch detection.
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Citations
26 Claims
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1. An input device comprising:
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a touch sensitive sensor operative to sense finger touch; a detection unit controllable to apply a single touch detection method over at least one area of the touch sensitive sensor and a multi-touch detection method over at least one other area of same touch sensitive sensor; and a controller operative to set the areas of single touch and multi-touch detection, wherein a refresh rate associated with the touch sensitive sensor is responsive of a size of the area where the multi-touch method is applied and wherein limiting size of the area where the multi-touch method is applied provides for increasing the refresh rate of the input device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An input device comprising:
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a touch sensitive sensor operative to sense finger touch; a detection unit controllable to apply a single touch detection method over at least one area of the touch sensitive sensor and a multi-touch detection method over at least one other area of same touch sensitive sensor; and a controller operative to set the areas of single touch and multi-touch detection, wherein the controller is operative to provide for sampling output from a same conductive line over a first period based on the single touch detection method and over a second period based on the multi-touch detection method and wherein the detection unit is operative to switch to an alternate circuit path during the second sampling period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An input device comprising:
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a touch sensitive sensor operative to sense finger touch, wherein the touch sensitive sensor is formed with a plurality of conductive lines formed in a grid; a detection unit controllable to apply a single touch detection method over at least one area of the touch sensitive sensor and a multi-touch detection method over at least one other area of same touch sensitive sensor; and a controller operative to set the areas of single touch and multi-touch detection, wherein the controller is operative to provide for sampling every other conductive line in a multi-touch detection area over a first sampling cycle and to sample all lines not sampled in the first sampling cycle during a subsequent sampling cycle.
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Specification