Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2011-06-28
2011-06-28
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S142000
Reexamination Certificate
active
07969212
ABSTRACT:
A power-up signal generating circuit of a semiconductor memory apparatus includes a current source unit configured to supply a current to a first node; a current sink unit configured to be turned on when the level of a divided voltage dividing an external voltage is equal to or higher than a predetermined level to allow the current to flow from a first node to a second node; a control unit configured to control the turn-on timing of the current sink unit by controlling a voltage level of the second node; and a signal generating unit configured to enable a power-up signal depending on a voltage level of the first node.
REFERENCES:
patent: 4330744 (1982-05-01), Embree et al.
patent: 4970408 (1990-11-01), Hanke et al.
patent: 5166545 (1992-11-01), Harrington
patent: 5302861 (1994-04-01), Jelinek
patent: 5936444 (1999-08-01), Pathak et al.
patent: 6005423 (1999-12-01), Schultz
patent: 6052006 (2000-04-01), Talaga et al.
patent: 6104221 (2000-08-01), Hoon
patent: 6239630 (2001-05-01), Bowers et al.
patent: 6744291 (2004-06-01), Payne et al.
patent: 6809565 (2004-10-01), Kawakubo
patent: 6885605 (2005-04-01), Lee et al.
patent: 6937074 (2005-08-01), Shin
patent: 6972602 (2005-12-01), Akamatsu et al.
patent: 7019417 (2006-03-01), Kang
patent: 7123075 (2006-10-01), Iorga
patent: 7123081 (2006-10-01), Lyon
patent: 7474130 (2009-01-01), Lo et al.
patent: 7545186 (2009-06-01), Suzuki et al.
patent: 7564278 (2009-07-01), Chen
patent: 7786770 (2010-08-01), Liang et al.
patent: 2005/0135174 (2005-06-01), Lee et al.
patent: 2005/0231246 (2005-10-01), Kang et al.
patent: 2007/0001721 (2007-01-01), Chen et al.
patent: 2007/0150770 (2007-06-01), Lee
patent: 2008/0238500 (2008-10-01), Jung
patent: 2009/0160505 (2009-06-01), Rho
patent: 2010/0109723 (2010-05-01), Shin
patent: 2003-203479 (2003-07-01), None
patent: 2005-116151 (2005-04-01), None
patent: 1020080060374 (2008-07-01), None
Donovan Lincoln
Houston Adam D
Hynix / Semiconductor Inc.
Kaminski Jeffri A.
Venable LLP
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