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:
Mar. 25, 1997
Filed:
Nov. 21, 1994
Applicant:
Inventors:
Paul W Coteus, Yorktown Heights, NY (US);
Douglas S Goodman, Sudbury, MA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345-7 ; 345-4 ; 380 54 ;
Abstract
Apparatus for masking a displayed image by merging it with a second featureless image made of short pulses of light that are introduced into a transparent screen disposed between the display and the viewer. An electronic shutter timed to match the sequence of the masking light pulses separates or blocks the masking image to permit the primary image to be viewed only by the person having the electronic shutter.
Coteus, Paul. (1997). Secure viewing of display units using an electronic shutter (U.S. Patent No. 5614920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5614920
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile