Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2006-08-15
2009-08-04
Lam, Tuan T (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S051000, C327S055000
Reexamination Certificate
active
07570082
ABSTRACT:
A comparator apparatus for comparing a first and a second voltage input includes a pair of cross-coupled inverter devices, including a pull up device and a pull down device, with output nodes defined between the pull up and pull down devices. A first switching device is coupled to the first input and a second switching device is coupled to the second input, with control circuitry configured for selective switching between a reset mode and a compare mode. In the reset mode, the first and second voltage inputs are coupled to respective output nodes so as to develop a differential signal thereacross, and the pull down devices in each inverter are isolated from the pull up devices. In the compare mode, the voltage inputs are isolated from the output nodes, and the pull down devices in each inverter are coupled to the pull up devices to latch the output nodes.
REFERENCES:
patent: 4803382 (1989-02-01), Tanimoto et al.
patent: 5285115 (1994-02-01), Tsuji
patent: 5563598 (1996-10-01), Hickling
patent: 5589785 (1996-12-01), Garavan
patent: 5600275 (1997-02-01), Garavan
patent: 5696726 (1997-12-01), Tsukikawa
patent: 6157220 (2000-12-01), Broekaert
patent: 6184721 (2001-02-01), Krymski
patent: 6396329 (2002-05-01), Zerbe
patent: 6400219 (2002-06-01), Fayed
patent: 6404373 (2002-06-01), Yu et al.
patent: 6404374 (2002-06-01), Yu et al.
patent: 6617885 (2003-09-01), Lim et al.
patent: 6801059 (2004-10-01), Lee
patent: 6946882 (2005-09-01), Gogl et al.
patent: 6967506 (2005-11-01), Roger
patent: 6985101 (2006-01-01), Leung et al.
patent: 2005/0151566 (2005-07-01), Jaussi et al.
IEEE Journal of Solid-State Circuits, vol. 27, No. 2; Feb. 1992. “A High-Speed CMOS Comparator with 8-b Resolution” Yin, G.M.; Eynde, F. Opt; and Sansen, W. pp. 208-211.
Gebara Fadi H.
Schaub Jeremy D.
Cantor & Colburn LLP
International Business Machines - Corporation
Lam Tuan T
Nguyen Hiep
Salys Cas
LandOfFree
Voltage comparator apparatus and method having improved... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voltage comparator apparatus and method having improved..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage comparator apparatus and method having improved... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4117823