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:
Jun. 06, 1995
Filed:
Oct. 28, 1993
Applicant:
Inventor:
Yasushi Tanigaki, Tokyo, JP;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348744 ; 348 14 ; 348 15 ; 348456 ; 348756 ; 348781 ; 348335 ; 359625 ;
Abstract
An image pick-up and projection apparatus comprising a projection unit (14), a pick-up unit (11) and a projection screen (9) switchable between a transmissive state and a diffusing state. By arranging an array (15) of elongated prismatic elements on the front surface of the screen, the contrast of the projected image is enhanced and it is avoided that a user (12) can simultaneously see the front of the projection unit and the front of the pick-up unit.
Tanigaki, Yasushi. (1995). Image display and pick-up apparatus (U.S. Patent No. 5422683). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5422683
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile