The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2007
Filed:
Dec. 20, 2002
Cefn R Hoile, Ipswich, GB;
Cefn R Hoile, Ipswich, GB;
British Telecommunications public limited company, London, GB;
Abstract
Display location calculation means and methods for calculating a display location are disclosed. It has become common for users to indicate a point on a display in order to communicate with a machine. It is therefore necessary to be able to calculate the location on the display that is being indicated by the user. A display generator () is arranged in operation to generate a display in response to display data generated by a machine (). A camera operable to generate image data representing at least part of the scene within the field of view of the camera (which part, includes at least a portion of the display) is carried in a pointer device (). Computation means () are arranged in operation to receive the image data and the display data and to calculate from these data sets the position and/or orientation of the pointer device () relative to the display. A display location can then be calculated from the calculated position and/or orientation.