Oscillators – With particular source of power or bias voltage
Reexamination Certificate
2007-08-17
2010-12-14
Pascal, Robert (Department: 2817)
Oscillators
With particular source of power or bias voltage
C331S17700V
Reexamination Certificate
active
07852168
ABSTRACT:
Energy-efficient timing circuits are described. Such circuits may include a biasing circuit configured to provide a control bias current to a voltage-controlled oscillator (VCO). The biasing circuit may repetitively switch between a normal-power operating mode and a reduced-power operating mode. During the normal-power operating mode, the biasing circuit may generate a control voltage representative of a desired control bias current for the VCO. By then storing the control voltage using a device, such as a capacitor, much of the biasing circuit may be turned off during the reduced-power operating mode.
REFERENCES:
patent: 6590441 (2003-07-01), Papathanasiou
patent: 6781450 (2004-08-01), Mercer et al.
patent: 6788161 (2004-09-01), Vilander
patent: 7443260 (2008-10-01), Saether
Chang Chunwei
Song Yonghua
Tan Chun Geik
Tsang Randy
Johnson Ryan
Marvell International Ltd.
Pascal Robert
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