Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2005-11-08
2005-11-08
Hayes, John W. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S051000
Reexamination Certificate
active
06963860
ABSTRACT:
To make it possible to provide high-quality music signal regardless of the advertising voice superimposing position, an encrypted pure music signal input through a transmission medium and an unencrypted advertising voice signal are separated by a signal string separation section. A signal transform and combining section decodes the encrypted pure music signal and combines the decoded music signal with the advertising voice signal into a resultant signal of the music and advertising voice signals, then outputs the resultant signal to a code string combining section, which then combines the encrypted pure music signal and the resultant signal of the music and advertising voice signals and supplies the result to a recording section for recording the result on a magneto-optic disc.
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Rubin, Aviel D., “Secure Distribution of Electronic Documents in a Hostile Environment”, Computer Communications, NL, Elsevier Science Publishers B1, Amsterdam, vol. 18, No. 6, pp. 429-434, Jun. 1, 1995.
Honma Hiroyuki
Shimoyoshi Osamu
Tsutsui Kyoya
Hayes John W.
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
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