Cryptography – Communication system using cryptography – Wireless communication
Reexamination Certificate
2003-04-25
2008-09-16
Vu, Kimyen (Department: 2135)
Cryptography
Communication system using cryptography
Wireless communication
C380S270000, C713S150000, C713S168000
Reexamination Certificate
active
07426271
ABSTRACT:
A method for establishing a secondary communication channel between at least two computing devices over a network medium through use of a primary channel connects a first computing device with a first telephonic unit and a second computing device with a second telephonic unit. If the two telephonic units are in communication with each other over a primary channel, and communication channels are established between the computing devices and their respective telephonic units, then the first computing device transmits its location information to the second computing device over the primary channel. A connection is then established between the second computing device and the first computing device over a secondary communication channel.
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Balfanz Dirk
Conley Kenneth W.
Durfee Glenn E.
Pendleton Bryan A.
Smetters Diana K.
Palo Alto Research Center Incorporated
Park Vaughan & Fleming LLP
Pich Ponnoreay
Vu Kimyen
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