Electrical computers and digital processing systems: support – Clock – pulse – or timing signal generation or analysis – Counting – scheduling – or event timing
Reexamination Certificate
2011-07-19
2011-07-19
Elamin, Abdelmoniem (Department: 2116)
Electrical computers and digital processing systems: support
Clock, pulse, or timing signal generation or analysis
Counting, scheduling, or event timing
C713S178000, C713S187000, C713S194000, C726S026000
Reexamination Certificate
active
07984320
ABSTRACT:
Computers and other electronic devices typically include a timing operation such as a clock in an operating system. It is anticipated that hackers may tamper with this clock. This tampering might be especially advantage in the context of systems which provide for rental of audio and video content, such as movies. Tampering with the system clock on the playing device would allow an extension of the rental period to the detriment of the provider of the rental content. Hence the present method is directed to detecting clock modifications both in terms of time shifting and clock rate tampering. This detection is done using digital signal processing.
REFERENCES:
patent: 6671608 (2003-12-01), McKenzie et al.
patent: 7509421 (2009-03-01), Lambert
patent: 7861308 (2010-12-01), Strohwig et al.
patent: 2009/0089398 (2009-04-01), Lambert
patent: 2010/0011214 (2010-01-01), Cha et al.
patent: 2011/0041186 (2011-02-01), Strohwig et al.
Betouin Pierre
Ciet Mathieu
Farrugia Augustin J.
Apple Inc.
Elamin Abdelmoniem
Morrison & Foerster / LLP
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