Title: Image alignment
Application Number: 200480020921 Application Date: 2004.07.12
Publication Number: 1826798 Publication Date: 2006.08.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04N1/44,H04K1/00
Applicant(s) Name: Koninkl Philips Electronics NV Address:
Inventor(s) Name: Johnson Mark T., Tuyls Pim T., Kevenaar Thomas A.
Attorney & Agent: cheng tianzheng wang zhongzhong
Abstract:
     An image decryption device (1) comprises a screen (10) on which a decrypted image may be visible. The decrypted image may the combination of two partial images, an encrypted image (A) displayed by a display device (2) and a key image or decrypting image (B) superimposed on the encrypted image by the decryption device. To properly align the encrypted image (A) and the key image (B), the decryption device is provided with sensors (11) capable of sensing the position of the decryption device relative to the display device. Corresponding alignment images (22) may be arranged around the screen (20 of the display device, or may be part of the encrypted image. Manual or automatic alignment may be provided.
Time: 21