Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2007-04-17
2007-04-17
Zand, Kambiz (Department: 2132)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C380S201000, C380S210000, C380S239000, C713S194000, C726S026000, C726S027000
Reexamination Certificate
active
10178822
ABSTRACT:
Various described embodiments provide for per-pixel functionality in connection with pixel data that is processed by a video card for rendering on a display monitor. That is, pixel data that is associated with individual pixels that are to be rendered on a display monitor are imparted with a characteristic that enables various functionalities to be implemented at the pixel level. In one embodiment, per-pixel functionality is provided by including, in the pixel data itself, a specification of an auxiliary function that is to be performed on the pixel data associated with the individual pixels. For example, the security of the pixel data associated with each pixel can be enhanced by providing the ability to encrypt and decrypt the pixel data for individual pixels. A specification of a key that can be used for decrypting the pixel data can then be included in the pixel data itself such that when the pixel data is processed for rendering, a suitably configured decryptor can access the key specification and decrypt the pixel data.
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England Paul
Evans Glenn F.
Lanier Benjamin E.
Zand Kambiz
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