Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2005-07-13
2010-02-23
Phu, Phuong (Department: 2611)
Pulse or digital communications
Transceivers
Modems
C375S219000, C375S220000, C375S257000, C455S556100, C455S418000, C455S419000, C455S558000
Reexamination Certificate
active
07668231
ABSTRACT:
The system includes a modem unit with a standardized form factor and standardized connector. The modem unit can be connected to a phone shell personal digital assistant and for other data units. Connected to the phone shell, the modem unit transmits voice data. Connected to the personal digital assistant or other data device, the modem unit transfers data. By having a modem unit that can usable both for voice and data, a single cellular transceiver can be used for both voice and data without requiring a wired connector. Additionally the standardized form factor and connector allows a second modem unit, having a second type of cellular connection, to be used in place of the first modem unit. The other type of cellular connection can be a different communication standard.
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Nixon & Peabody LLP
Phu Phuong
Sierra Wireless Inc.
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