Compact disc comprising an antipiracy marking and method of providing compact discs with an antipiracy marking
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United States of America Patent
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Sep 23, 1997
Grant Date -
N/A
app pub date -
Sep 27, 1995
filing date -
Sep 28, 1994
priority date (Note) -
Expired
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Abstract
A method for providing compact discs with an antipiracy marking and a mold for pressing compact discs for making compact discs carrying an antipiracy marking as well as compact discs comprising an antipiracy marking pattern, the compact disc consisting of a substrate including on one of its sides the information to be read by the compact disc player and on the opposite side an antipiracy marking pattern.
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