Digital information sales method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Oct 11, 2001
app pub date -
Feb 2, 2001
filing date -
Apr 11, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method for preventing unauthorized copying of digital information such as digitized movies, music, literature, or other works, and reliably collecting to the digital information owner fees paid for using the copied digital information. When copying key data 156 enabling use of digital information 158, the key data is locked. To unlock the key data, the user accesses digital information seller 150 and pays the digital information usage fee.
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