Voltage-controlled oscillator, phase-locked loop, and memory...

Details Voltage-controlled oscillator, phase-locked loop, and memory... Voltage-controlled oscillator, phase-locked loop, and memory...

2011-08-16

2011-08-16

Nguyen, Tan T. (Department: 2827)

Static information storage and retrieval

Read/write circuit

Sipo/piso

C365S233110, C331S025000, C331S048000, C331S057000

Reexamination Certificate

active

08000162

ABSTRACT:
A voltage-controlled oscillator comprises a first oscillator and a second oscillator. The first oscillator may generate a plurality of intermediate clock signals at a plurality of first nodes, multiply connected to a plurality of first ring shape circuits, in response to a control voltage. The plurality of intermediate clock signals may have a different phase from each other and a same phase difference with each other. The second oscillator may generate a plurality of output clock signals at a plurality of second nodes, multiply connected to a plurality of second ring shape circuits, by changing a voltage level of the intermediate clock signals. The plurality of second ring shape circuits may pass the plurality of first nodes.

REFERENCES:
patent: 7071789 (2006-07-01), Gu
patent: 2007274431 (2007-10-01), None
patent: 100728996 (2007-06-01), None

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