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. 16, 1996
Filed:
Dec. 07, 1993
Jakub Segen, Fair Haven, NJ (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
An apparatus and method for determining the location of an object in an active area of a first plane. The apparatus includes a first reflecting device, disposed substantially perpendicular to the first plane at a periphery of the active area. The first reflecting device receives a first image of the object from the active area and reflects the first image back toward the active area substantially parallel to the first plane. A second reflecting device, disposed substantially perpendicular to the first plane at a periphery of the active area, receives a second image of the object from the active area and reflects the second image back toward the active area substantially parallel to the first plane. The second reflecting device is disposed at a first angle which is less than one-hundred eighty degrees to the first reflecting device. The angle opens toward the active area and toward a detecting device. The detecting device is disposed in the first plane at a periphery of the active area opposite the first and second reflecting devices. The detecting device receives the first image and the second image and produces a signal indicating the position of the first and second images.