Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-02-27
2007-02-27
Milord, Marceau (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S345000, C455S344000, C455S343100, C455S343200, C455S127500, C455S180300, C327S156000, C327S143000, C327S108000, C713S322000, C713S324000, C713S501000, C331S074000, C331S096000, C331S057000, C331S158000
Reexamination Certificate
active
10264216
ABSTRACT:
A power management circuit is arranged to apply power to and remove power from its own oscillator to conserve power. A power-on reset circuit provides a power-on-reset signal to a state machine. The state machine contains states that are programmed with information that is used to power up or down various subsystems within a device that includes the power management systems, including the oscillator of the state machine. The state machine assumes a known state and applies power to the oscillator in response to the power-on-reset signal. The state machine changes states in response to system events (e.g., a keypress). The state machine also maintains power to the oscillator during the period of time and which the state machine requires clock signal from the oscillator. The state machine can power down the oscillator to conserve power when the state machine does not require a clock signal from the oscillator.
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Brown Gary A.
Horovitz Neal Lane
Hennings Mark R.
Milord Marceau
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