Method and apparatus for detecting software tampering in a...

Details Method and apparatus for detecting software tampering in a... Method and apparatus for detecting software tampering in a...

2005-07-12

2005-07-12

Corrielus, Jean B (Department: 2637)

Pulse or digital communications

Spread spectrum

C375S141000, C375S146000, C714S774000, C455S410000, C455S411000, C455S415000

Reexamination Certificate

active

06917641

ABSTRACT:
A subscriber device (2) includes a long code generator (12) and a modifier (30) for generating a spread bit stream with a predetermined error pattern that is transmitted by a transmitter (16) at the subscriber device (2) to a base station (3). The base station (3) identifies the current subscriber device properties by identifying the error pattern and subsequently compares the current subscriber device properties with a knowledge base of subscriber device software properties associated with the error pattern in the spread bit stream. The knowledge base is stored in a memory source (4).

REFERENCES:
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5862160 (1999-01-01), Irvin et al.
patent: 5999561 (1999-12-01), Naden et al.
patent: 6246675 (2001-06-01), Beasley et al.
patent: 6389138 (2002-05-01), Li et al.

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