Appeal No. 2003-2149 Page 2
Application No. 09/498,379
BACKGROUND
The appellant's invention relates to systems for the mass production and
distribution of data, with or without encryption, and its decryption and playback by
specially enabled machines utilizing a digital medium. More particularly, the appellant's
invention relates to digital playback devices and storage media with embedded
identifiers which provide control of copying and playback (specification, p. 1). A copy of
the dependent claims under appeal is set forth in the appendix to the appellant's brief.
Claims 57 and 59, the independent claims on appeal, read as follows:
57. A method for secure distribution and access to digital data, comprising:
a) providing an encryption key set having an encryption key and a
decryption key that can be divided into multiple parts, each part of which is
associated with a component of a secure distribution system;
b) encrypting the digital data with the encryption key to produce encrypted
digital data;
c) supplying the encrypted digital data along with a first part of the
decryption key that is associated with the digital data to a playback device;
d) supplying a second part of the decryption key that is associated with the
playback device to the playback device; and
e) combining the parts of the decryption keys in the playback device and
using the combined decryption key to decrypt the encrypted digital data.
59. A system for secure distribution and access to digital data, comprising:
a) a plurality of system components;
b) an encryption key set having an encryption key and a decryption key
that can be divided into multiple parts, wherein a part of the decryption key is
associated with each of the system components;
c) means for encrypting the digital data using the encryption key; and
d) means for receiving and combining the parts of the decryption key and
decrypting the encrypted digital data.
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007