Passive touch system and method of detecting user input
First Claim
Patent Images
1. A passive touch system comprising:
- a passive touch surface;
at least two cameras associated with said touch surface, said at least two cameras acquiring images of said touch surface from different locations and having overlapping fields of view; and
a processor receiving and processing images acquired by said at least two cameras to detect the existence of a pointer therein and to determine the location of said pointer relative to said touch surface.
0 Assignments
0 Petitions
Accused Products
Abstract
A passive touch system includes a passive touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and have overlapping fields of view. A processor receives and processes images acquired by the at least two cameras to detect the existence of a pointer therein and to determine the location of the pointer relative to the touch surface. Actual pointer contact with the touch surface and pointer hover above the touch surface can be determined.
-
Citations
18 Claims
-
1. A passive touch system comprising:
-
a passive touch surface;
at least two cameras associated with said touch surface, said at least two cameras acquiring images of said touch surface from different locations and having overlapping fields of view; and
a processor receiving and processing images acquired by said at least two cameras to detect the existence of a pointer therein and to determine the location of said pointer relative to said touch surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of detecting the position of a pointer relative to a passive touch surface comprising the steps of:
-
acquiring images of said touch surface from different locations using cameras having overlapping fields of view; and
processing said images to detect the existence of a pointer therein and to determine the location of said pointer relative to said touch surface. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification