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:
Nov. 22, 1994
Filed:
Apr. 01, 1992
Robert P Bisey, Seaford, NY (US);
Grumman Aerospace Corporation, Bethpage, NY (US);
Abstract
A three-dimensional computer image variable perspective display system provides for the real-time perspective control of a three-dimensional computer generated image controlled by the head movements of a computer operator viewing the image. The system includes an ultrasonic transmitter module worn on the head of the computer operator, a set of ultrasonic receivers mounted on or near the computer display monitor, and a computer interface unit. The ultrasonic transmitter transmits sound waves towards the display monitor which are detected by the ultrasonic receivers and processed by the computer interface unit. The computer interface unit calculates the elapsed times between the transmission and reception of the sound waves and converts this information into digital data words. The quantative magnitude of these data words represent in direct proportion, the instantaneous distance between the ultrasonic transmitter and the ultrasonic receivers. This distance information interacts with rotational axis algorithms used to control the three-dimensional display to cause the image to change it's perspective view in correspondence to the movement of the computer operator's head, in a manner exactly analogous to viewing three-dimensional objects in nature.