CAPACITIVE TOUCH DEVICE AND METHOD IDENTIFYING TOUCH OBJECT ON THE SAME
First Claim
1. A method identifying touch object on a capacitive touch device, comprising steps of:
- reading sensing information of multiple traces of a touch panel of a capacitive touch device corresponding to a touch object, wherein the sensing information includes a sensing cluster corresponding to a portion on the touch panel touched by the touch object;
identifying a hover cluster of the sensing information, wherein the hover cluster corresponds to a portion on the touch panel adjacent to but not in contact with the touch object and surrounds the sensing cluster;
determining if the hover cluster meets a first characteristic; and
determining that the touch object is a specific touch object when the hover cluster meets the first characteristic.
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Accused Products
Abstract
A capacitive touch device and a method identifying touch object on the touch device read sensing information of multiple traces of a touch panel corresponding to a touch object, in which the sensing information includes a sensing cluster corresponding to a portion on the touch panel touched by the touch object, identify a hover cluster of the sensing information corresponding to a portion adjacent to and surrounding the sensing cluster, determine if the hover cluster meets a first characteristic, and determine that the touch object is a specific touch object when the hover cluster meets the first characteristic. Given the foregoing device and method, a palm rejection operation can be more accurately performed and is also applicable to object detection at corners of the touch panel.
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Citations
24 Claims
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1. A method identifying touch object on a capacitive touch device, comprising steps of:
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reading sensing information of multiple traces of a touch panel of a capacitive touch device corresponding to a touch object, wherein the sensing information includes a sensing cluster corresponding to a portion on the touch panel touched by the touch object; identifying a hover cluster of the sensing information, wherein the hover cluster corresponds to a portion on the touch panel adjacent to but not in contact with the touch object and surrounds the sensing cluster; determining if the hover cluster meets a first characteristic; and determining that the touch object is a specific touch object when the hover cluster meets the first characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A capacitive touch device, comprising:
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a touch panel having multiple traces; and a controller connected to the traces of the touch panel, scanning each trace to determine sensing information generated by a touch object touching the touch panel, wherein the sensing information includes a sensing cluster corresponding to a portion on the touch panel touched by the touch object and a hover cluster corresponding to a portion on the touch panel adjacent to but not in contact with the touch object and surrounding the sensing cluster, and the controller identifies the touch object as a specific touch object when determining that the hover cluster meets a first characteristic. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification