Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reissue Patent
2007-11-13
2007-11-13
Cunningham, Terry D. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S077000, C327S361000, C327S539000, C327S541000, C327S542000, C327S543000
Reissue Patent
active
09616821
ABSTRACT:
A direct current sum bandgap voltage comparator for detecting voltage changes in a power supply. The direct current sum bandgap voltage comparator includes a summing node, current sources connected to the summing node and the power supply, and an indicator circuit connected to the summing node. Each current source supplies a current to the summing node wherein the summing node voltage level is responsive to the currents supplied. The indicator circuit is responsive to changes in the summing node voltage level and generates at an output a logical signal at one state when the summing node voltage level is greater than a predetermined value and generates the logical signal at the output at another state when the summing node voltage level is less than the predetermined value, the predetermined value corresponding to a preselected power supply voltage.
REFERENCES:
patent: 3617859 (1971-11-01), Dobkin et al.
patent: 4110677 (1978-08-01), Boronkay et al.
patent: 4350904 (1982-09-01), Cordell
patent: 4381458 (1983-04-01), Anstey et al.
patent: 4473758 (1984-09-01), Huntington
patent: 4556804 (1985-12-01), Dewitt
patent: 4617473 (1986-10-01), Bingham
patent: 4645943 (1987-02-01), Smith, Jr. et al.
patent: 4654829 (1987-03-01), Jiang et al.
patent: 4806789 (1989-02-01), Sakihama et al.
patent: 4906863 (1990-03-01), Van Tran
patent: 4935690 (1990-06-01), Yan
patent: 4958123 (1990-09-01), Hughes
patent: 5013941 (1991-05-01), Jansson
patent: 5029295 (1991-07-01), Bennett et al.
patent: 5034626 (1991-07-01), Pirez et al.
patent: 5049807 (1991-09-01), Banwell et al.
patent: 5053640 (1991-10-01), Yum
patent: 5087831 (1992-02-01), Ten Eyck
patent: 5103159 (1992-04-01), Breugnot et al.
patent: 5111071 (1992-05-01), Kwan et al.
patent: 5121359 (1992-06-01), Steele
patent: 5272393 (1993-12-01), Horiguchi et al.
patent: 5373227 (1994-12-01), Keeth
patent: 5430395 (1995-07-01), Ichimaru
patent: 5559425 (1996-09-01), Allman
patent: 5774013 (1998-06-01), Groe
Cunningham Terry D.
Jorgenson Lisa K.
Santarelli Bryan A.
STMicroelectronics Inc.
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