Secure digital video disk and player

Details Secure digital video disk and player Secure digital video disk and player

2005-01-11

2005-01-11

Sheikh, Ayaz (Department: 2136)

Cryptography

Video cryptography

Video electric signal modification

C380S252000, C380S287000, C369S275300, C369S059260, C369S124080

Reexamination Certificate

active

06842522

ABSTRACT:
A method for recoding data on an optical medium such as DVD. The method includes receiving main data from a data source, determining a plurality of data frame values in response to the main data, inverting at least one selected bit in at least one of the data frame values to generate a plurality of encoded data frames, scrambling the encoded data frames by a feedback shift register to generate scrambled data frames, generating ECC values in response to the scrambled data frames, adding the ECC values to the scrambled data frames to generate an ECC block, rearranging the ECC block to generate a plurality of recording frames, encoding the recording frame by an eight-to-sixteen modulation (ESM) encoder to generate code words, adding sync values to the code words to generate a plurality of physical sectors, and recording the physical sectors on the optical medium. There is a complementary method for reading and decoding data from an optical medium.

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ECMA Standardizing Information and Communication Systems: “Standard ECMA—130: Data interchange on read-only 120 mm optical data disks (CD-ROM)” Standard ECMA—130, XP002143627 Geneva, Switzerland.*
ECMA: Standardizing Information and Communication Systems: Standard ECMA-272, 2nd Edition: 120mm Rewritable Disk (DVD-RAm) Standard ECMA, XX,XX no 272 Jun. 1999 p. 1-115 XP002186767.

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