Invention Grant
- Patent Title: Touch sensors and touch sensing methods
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Application No.: US14432231Application Date: 2013-10-08
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Publication No.: US09652093B2Publication Date: 2017-05-16
- Inventor: Stephen William Roberts , Peter Timothy Sleeman , Christopher Kyle Ard
- Applicant: TouchNetix Limited
- Applicant Address: GB Hampshire
- Assignee: TouchNetix Limited
- Current Assignee: TouchNetix Limited
- Current Assignee Address: GB Hampshire
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Priority: GB1217948.7 20121008
- International Application: PCT/GB2013/052614 WO 20131008
- International Announcement: WO2014/057252 WO 20140417
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A touch-sensitive position sensor is disclosed. The sensor comprises an array of first electrodes and an array of second electrodes arranged to cross one another in a pattern to define a sensing surface. The sensing surface has a rectangular shape which is formed into a cylinder such that first and second opposing edges of the sensing surface are adjacent one another. A controller is coupled to respective ones of the first electrodes and the second electrodes and arranged to measure changes in an electrical parameter, e.g. capacitance or resistance, associated with the first and second electrodes caused by the presence of the object adjacent the sensing surface. The controller is further operable to determine a reported position for the object from these measurements in a coordinate system defined relative to the electrodes. At least some of the electrodes are arranged to follow paths which are non-linear within the sensing surface such that object positions along a straight line between the first and second opposing edges on the sensing surface correspond with reported positions along a closed curve in the coordinate system defined relative to the electrodes. Thus, a continuous movement around a circumference of the cylindrical sensing surface is reported as a continuous movement around a closed path in the coordinate system defined relative to the electrodes.
Public/Granted literature
- US20150242028A1 TOUCH SENSORS AND TOUCH SENSING METHODS Public/Granted day:2015-08-27
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