Oscillators – Ring oscillators
Reexamination Certificate
2011-01-11
2011-01-11
Pascal, Robert (Department: 2817)
Oscillators
Ring oscillators
C331S044000, C365S201000
Reexamination Certificate
active
07868706
ABSTRACT:
An oscillator device includes a plurality of stages. Each stage is a monostable stage having a delay path, whereby a signal transition of a designated type (rising or falling) at the input of the delay path results in a signal transition at the output of the stage of the same transition type. Each stage of the oscillator device also includes a reset module that causes the output signal to be reset to a nominal state a predetermined period of time after the signal transition of the output signal. Each stage thus provides an output signal pulse in response to the signal transition of the designated type at the input. The output of the final stage of the oscillator device is connected to the input, so that the oscillator output provides an oscillating signal having a period based upon the delay path of each the oscillator device stages.
REFERENCES:
patent: 6144262 (2000-11-01), Kingsley
patent: 6535013 (2003-03-01), Samaan
patent: 6734744 (2004-05-01), Monzel et al.
Burwinkel Keith
Dupcak Robert J.
Huber Jan-Michael
Lay Brian M.
Nissar Arshad I.
Advanced Micro Devices , Inc.
Johnson Ryan
Pascal Robert
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