Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2005-05-03
2005-05-03
Trammell, James P. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S001100, C370S259000, C370S263000, C379S093030, C379S102020, C379S102030, C379S106060, C455S405000, C455S406000, C455S418000, C713S150000
Reexamination Certificate
active
06889212
ABSTRACT:
A mobile communication device (104) loads an application bundle (200), which includes a software application (202) and an indication of a time limited license (206). To enforce the time limited license, the mobile communication device, upon attempting to invoke the application code (310), obtains a secure time reading (312). It is contemplated that a secure time server (116) may be used to facilitate license enforcement. Once the secure time reading is obtained, the mobile communication device compares the time with the license period, and executes the code only if the time reading is within the license period.
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Simple Network Time Protocol Version 4, D. Mills, Oct. 1996.
Chan Wai Alan
Geiger Robert L.
Lin Jy-Han
Smith Ronald R.
Wanchoo Sanjay
Garrett Scott M.
Motorola Inc.
Trammell James P.
Winter John
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