Appeal No. 2000-0753
Application 08/909,545
BACKGROUND
The invention relates to a method for protecting against
unauthorized copying of information on an optical medium which
stores information in a spiral track. A "mark" is placed in a
predetermining location within the spiral track by a special
process. The mark cannot be reproduced except by a LBR (laser
beam recorder) used in mass CD-ROM manufacturing. Verification
of the mark is checked by executable code on the disk.
Claim 1 is reproduced below.
1. A method for protecting against unauthorized
copying of information on an optical medium comprising the
steps of:
a) placing at least one mark at each of at least one
corresponding predetermined location on an optical medium,
which at least one location is within a continuous spiral
track of said optical medium, which mark is incapable of
being reproduced except by a mass reproduction recorder, and
which mark, when read by a device adapted to read data
contained in said continuous spiral track is incapable of
being read, and, thereby prevents writing a copy of said
mark on an optically recordable medium;
b) adding an executable code module to said optical
medium, said executable code module adapted to verify said
at least one mark, and allow access to data and programs on
said optical medium after said verification of said at least
one mark.
The examiner relies on the following references:
Oshima et al. (Oshima '301) 5,761,301 June 2, 1998
(filed November 17, 1995)
Oshima et al. (Oshima '551) 5,805,551 September 8, 1998
(filed April 25, 1997)
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