Philips Electronics North America Corporation

Jill Forer Goldenberg

Johannes C Van De Ven

Qiang Huang

Carlo Basile

Alan Peter Cavallerano

A rear projection screen which includes a front lenticular surface, a diffusion region behind the lenticular surface, a non-diffusion region behind the diffusion region, and a rear phase grating surface, when used with high magnification projection systems, exhibits reduced speckle when compared to other rear projection screen without such a grating.

Rear projection screen with reduced speckle

A display device for receiving encrypted or scramble video data and for decrypting or descrambling the video data such that a signal is not provided &ldquo;in the clear&rdquo;. The video data is stored in a memory array in an encrypted form and read out from the memory array using a decryption key. The encrypted data is then read out from the memory elements in accordance with known methods.

Method and device for providing controlled access video signals without providing a signal in the clear

A LCD display device for receiving encrypted video data and for decrypting the video data such that a signal is not provided &ldquo;in the clear&rdquo; before receipt by the display device. The video data is encrypted within a row of video and decrypted at the display. Alternatively the rows are encrypted by altering the time sequence of display of each row.

Growing community of inventors

New Rochelle, NY, United States of America

Jill Forer Goldenberg