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. 27, 1998
Filed:
Sep. 06, 1994
Setsuo Arita, Hitachiota, JP;
Yukiharu Ohga, Katsuta, JP;
Hiroyuki Yuchi, Hitachi, JP;
Hiroshi Seki, Hitachi, JP;
Yukio Nagaoka, Ibaraki-ken, JP;
Koichi Kawaguchi, Hitachi, JP;
Akira Kaji, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A pointer remotely points a display screen of a large screen display device. The display screen is picked up by a monitor camera. An image processing unit extracts a feature of the pointer used for pointing based on the resulting image signal to identify the position of the pointing point and the pointer based on the feature. A computer generates information on an object to be displayed at a position pointed by the pointer. The generated information is displayed on a display device (CRT display device or large screen display device) assigned to the pointer. Even when a plurality of pointers are used, the information on the object to be displayed pointed by the pointer is properly displayed.