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:
May. 08, 2012
Filed:
Feb. 20, 2008
Jean-ronan Vigouroux, Rennes, FR;
Pascal Bourdon, Le Grand Fougeray, FR;
Didier Doyen, La Debinerie, FR;
Jean-jacques Sacre, Chateaugiron, FR;
Patrick Morvan, Laille, FR;
Sylvain Thiebaud, Noyal sur Vilaine, FR;
Jean-Ronan Vigouroux, Rennes, FR;
Pascal Bourdon, Le Grand Fougeray, FR;
Didier Doyen, La Debinerie, FR;
Jean-Jacques Sacre, Chateaugiron, FR;
Patrick Morvan, Laille, FR;
Sylvain Thiebaud, Noyal sur Vilaine, FR;
Thomson Licensing, Boulogne, Billancourt, FR;
Abstract
The invention relates to a projection system for displaying at least one visual image based on three primary colors, comprising a signal processing unit for converting said visual image into at least a visual image based on four primary colors, a frequency band being associated to each color primary, first display means for displaying three first primary colors of said visual image on a screen and second display means for displaying at least the fourth primary color of said visual image on said screen. According to the invention, the system further comprises optical filtering means that are adapted to enhance the separation between the frequency spectrum of the first three primary colors of the first display means and the frequency spectrum of the at least fourth primary color of the second display means. Application to anti-camcorder systems.