DUPLICATE OBJECTS

• US 20100315338A1
• Filed: 08/24/2010
• Published: 12/16/2010
• Est. Priority Date: 10/10/2006
• Status: Active Grant

• Current Assignee: Promethean Limited (Best Assistant Education Group Co.), Promethean House
• Original Assignee: Promethean Limited (Best Assistant Education Group Co.)
• Inventors: Unsworth, Peter, Pearce, Nigel
• Granted Patent: US 8,068,093 B2
• Time in Patent Office: Days
• US Class Current: 345/158
• CPC Class Codes: G06F 3/033 Pointing devices displaced or positioned by the user , e.g. mice, trackballs, pens or joysticks; Accessories therefor digitisers characterised by the transducing means G06F3/041
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

There is disclosed an interactive display system comprising an interactive surface for displaying an image and for receiving inputs from remote devices, the system being adapted to detect the presence of at least two remote devices proximate the interactive surface.

Claims

1. An interactive system comprising an interactive surface for displaying an image and adapted for determining the position, in use, of a plurality of pointing devices on the interactive surface, the system being adapted to manipulate an image displayed on the interactive surface in dependence on the plurality of pointing devices, wherein the image is duplicated responsive to detection of a first pointing device positioned on the displayed image, and detection of a second pointing device positioned on the displayed image, the duplication being determined in dependence on a detected dragging movement of either the first or second pointing devices and providing a duplicate image at a location to which the dragged pointing device is positioned.

2. The interactive system of claim 1 comprising a drive grid signal generator for driving a drive grid for period of time at each of a plurality of frequencies associated with each of the plurality of pointing devices, wherein the system adapts the period of time for a given frequency to optimize said period of time for particular devices.

3. A method in an interactive system comprising an interactive surface for displaying an image and for detecting a position of a plurality of pointing devices, in use, on the interactive surface, wherein the image is duplicated responsive to detection of a first pointing device positioned on the displayed image, and detection of a second pointing device positioned on the displayed image, the duplication being determined in dependence on a detected dragging movement of either the first or second pointing devices and providing a duplicate image at a location to which the dragged pointing device is positioned.

4. The method of claim 3 comprising driving a drive grid for a period of time at each of a plurality of frequencies associated with each of the plurality of pointing devices, and adapting the period of time for a given frequency to optimize said period of time for particular devices.