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. 25, 1994
Filed:
Aug. 05, 1992
Applicant:
Inventors:
Yasushi Tanigaki, Tokyo, JP;
Yoshikazu Satoh, Tokyo, JP;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 85 ; 379 53 ;
Abstract
An image projection display and pick-up apparatus includes a display screen with controllable tranmissivity, and image projection device behind the screen for projecting an image onto the rear surface of the screen, and an image pick-up device, also located behind the screen, for picking up an image of a viewer located in front of the screen, and an optical shutter for preventing light from the projection device to reach the screen during image pick-up.