User identification for multi-user touch screens
First Claim
1. A multi-user touch screen system comprising a touch screen comprising:
- a transparent and electrically conductive surface arranged to receive touches from users of the touch screen system; and
touch sensitive elements arranged to detect touches on said surface and at least one control unit connected to said touch sensitive elements and arranged so as to detect the position of the touches detected by said touch sensitive elements, wherein said touch screen system further comprises a touch identification system comprising;
at least two electrodes;
at least one transmitting unit for transmitting an identifying signal;
at least one receiving unit for detecting at least one identifying signal;
wherein said at least one transmitting unit and said at least one receiving unit are arranged with respect to said electrically conductive surface and said at least two electrodes so that at least one receiving unit detects an unique identifying signal from at least one transmitting unit when a user simultaneously touches the electrically conductive surface and an electrode connected to the receiving unit.
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Accused Products
Abstract
The invention relates to a touch screen system with a touch screen (400) comprising a transparent and electrically conductive surface (450) arranged to receive touches from users (UA, UB) of the touch screen system; and touch sensitive elements (420) arranged to detect the position of said touches on said electrically conductive surface (450). The touch screen system is further comprising a touch identification system (900) comprising at least two electrodes (EA-ED), at least one transmitting unit (910) connected to the electrically conductive surface (450) for transmitting an identifying signal to said electrically conductive surface (450), and at least two receiving units (900A-900D), each connected to at least one of said electrodes (EA-ED) for detecting said identifying signal when a user (UA, UB) simultaneously touches the electrically conductive surface (450) and an electrode (EA-ED) that is connected to the receiving unit (900A-900D).
83 Citations
12 Claims
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1. A multi-user touch screen system comprising a touch screen comprising:
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a transparent and electrically conductive surface arranged to receive touches from users of the touch screen system; and
touch sensitive elements arranged to detect touches on said surface and at least one control unit connected to said touch sensitive elements and arranged so as to detect the position of the touches detected by said touch sensitive elements, wherein said touch screen system further comprises a touch identification system comprising;
at least two electrodes;
at least one transmitting unit for transmitting an identifying signal;
at least one receiving unit for detecting at least one identifying signal;
wherein said at least one transmitting unit and said at least one receiving unit are arranged with respect to said electrically conductive surface and said at least two electrodes so that at least one receiving unit detects an unique identifying signal from at least one transmitting unit when a user simultaneously touches the electrically conductive surface and an electrode connected to the receiving unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification