Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2007-12-12
2009-11-17
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S050000
Reexamination Certificate
active
07619446
ABSTRACT:
Techniques pertaining to a comparator circuit with reduced power consumption are disclosed. According to one aspect of the present invention, the comparator unit has a pair of input signal pins VIP and VIN, a pair of output signal pins VOR and VOS, and a clock signal pin CLK. In operation, when the CLK signal is at an idle voltage level, the comparator unit comes into an idle state. At the idle state, the comparator unit does not compare the two input signals VIP and VIN so that the output signals are identical. When the CLK signal is at a busy voltage level, the comparator comes into a busy state. At the busy state, the comparator compares the input signals VIP and VIN, and determines the values of the output signals VOR and VOS depending on the comparing result, e.g., if the input signal VIP is larger than the input signal VIN, the output signal VOR is high and the output signal VOS is low; otherwise, the output signal VOR is low and the output signal VOS is high.
REFERENCES:
patent: 7113016 (2006-09-01), Hsieh et al.
patent: 2003/0179028 (2003-09-01), Kizer et al.
Cheng Diana J
Donovan Lincoln
Vimicro Corporation
Wuxi Sino-US IP Agency, Ltd.
Zheng Joe
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