Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2007-10-02
2007-10-02
Barrón, Jr., Gilberto (Department: 2132)
Cryptography
Video cryptography
Video electric signal modification
Reexamination Certificate
active
09620462
ABSTRACT:
A scrambler and scrambling method. The scrambler has a random data generator which generates random data having a random data generation cycle based on a result obtained by multiplying at least a size of a first data frame by a result obtained by dividing a data amount of two tracks in an outermost circumference of an optical disc by a size of a second data frame. The scrambler is advantageous in generating a stable servo signal and suppressing a DC component in modulation in a high density disc system using the optical disc.
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Barrón Jr. Gilberto
Ho Thomas
Stein, McEwen & Bui LLP
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