Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2006-11-15
2010-12-14
Augustin, Evens J (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S058000, C705S051000
Reexamination Certificate
active
07853530
ABSTRACT:
Disclosed herein are a digital signal processing apparatus, a digital signal processing method, an information center, and a data delivery system capable of judging reliably whether digital signals such as music data recorded on a storage medium have been legally purchased by a customer from a legitimate vendor so that only when the digital signals are judged to be legitimately purchased data will a new service be offered to the customer.
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Konno Taro
Koyata Tomohiro
Augustin Evens J
Le Nancy T
Lerner David Littenberg Krumholz & Mentlik LLP
Sony Corporation
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