Security system for computer software
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 25, 1990
Grant Date -
N/A
app pub date -
Jul 13, 1988
filing date -
Jul 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The disclosure relates to a security system for computer software. A plug-in circuit accompanies each legitimately purchased softward package. The software includes a communication system to decode signals generated by the plug-in circuit. Where the appropriate signal is sensed the program is executed. If the proper code is not sensed the program shuts down.
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