Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2006-12-05
2006-12-05
Moazzami, Nasser (Department: 2136)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C380S200000, C380S201000, C380S202000, C380S203000, C380S227000, C380S228000, C380S229000, C380S230000
Reexamination Certificate
active
07146508
ABSTRACT:
An image processing apparatus capable of preventing a copy protect function of a video or other contents signal from being disabled. An encoder encodes a contents signal from a DVD reproduction unit. A copy protect circuit performs copy protect processing on the encoded signal and outputs it. The copy protect circuit is controlled by control data input from CPU via an I2C_IF circuit. At this time, verification data from the CPU is stored in, and then read from registers in the I2C_IF circuit. Then, the CPU verifies the destination of transmission of the control data.
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Hirano Tetsuya
Tajima Hiroshi
Kananen Ronald P.
Moazzami Nasser
Rader & Fishman & Grauer, PLLC
Sony Corporation
Yalew Fikremariam
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