Microprocessor suitable for reproducing AV data while protecting

Details Microprocessor suitable for reproducing AV data while protecting Microprocessor suitable for reproducing AV data while protecting

1997-03-10

2000-03-28

Barron, Jr., Gilberto

Cryptography

Video cryptography

Copy protection or prevention

713189, 713190, 380217, H04N 7167

Patent

active

060441577

ABSTRACT:
A microprocessor used in an image information processing system is provided. The microprocessor includes: decryption unit 59 for decrypting the encrypted compressed AV data; IDCT unit 58 for performing an inverse DCT to decompress the decrypted compressed AV data; and microprogram memory 54 for storing microprograms for executing the AV data reproduction instruction which performs decryption and decompression of the encrypted compressed AV data inseparably by using the decryption unit 59 and IDCT unit 58.

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