Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Reexamination Certificate
2005-12-28
2010-06-22
Dao, Minh D (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
C455S127100, C455S127500, C455S013400, C455S522000, C370S335000, C340S870030
Reexamination Certificate
active
07742753
ABSTRACT:
A mobile communication device100has a digital subsystem (110) and a radio frequency subsystem (108), and is powered by a battery (102) which is charged via a charge control circuit (106) using an external power supply (104) connected to the mobile communication device in a single path configuration. The mobile communication device permits limited operation of the mobile communication device by a user while the battery voltage is sufficient to power the digital subsystem but not yet sufficient to power the radio frequency subsystem. The delay in operation is minimized, however, because once charging commences, the battery voltage rises sufficiently fast that, typically, by the time the digital subsystem is initialized, enabled, and powered up, the battery voltage will be sufficient to enable the radio frequency subsystem.
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Ballantyne Wayne W.
Carrero Alfredo R.
Patino Joseph
Tassi Scott A.
Dao Minh D
Motorola Inc.
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