Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Reexamination Certificate
2007-11-27
2010-06-15
Nguyen, Hai L (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
C327S333000
Reexamination Certificate
active
07737748
ABSTRACT:
A level shifter of a semiconductor device and method of controlling a duty ratio are provided. The level shifter includes first and second PMOS transistors having sources to which a power supply voltage is applied, first and second NMOS transistors having sources to which a ground voltage is applied, third and fourth NMOS transistors having sources connected to drains of the first and second NMOS transistors and gates to which the power supply voltage is applied; and a voltage controlled delay unit for receiving an input signal applied to a gate of the first NMOS transistor, inverting a level of the input signal, determining whether a voltage of an inverted input signal should be charged in response to a voltage control signal, outputting the voltage of the inverted input signal of which delay time is controlled, and applying the inverted input signal to a gate of the second NMOS transistor.
REFERENCES:
patent: 5969542 (1999-10-01), Maley et al.
patent: 6002290 (1999-12-01), Avery et al.
patent: 6933755 (2005-08-01), Hong et al.
patent: 7148735 (2006-12-01), Ito et al.
patent: 7352228 (2008-04-01), Ali et al.
patent: 7468615 (2008-12-01), Tan et al.
patent: 7471105 (2008-12-01), Kim
patent: 2004/0085114 (2004-05-01), Hong et al.
patent: 2004/0155693 (2004-08-01), Ito et al.
patent: 2005/0258887 (2005-11-01), Ito et al.
patent: 2006/0125521 (2006-06-01), Kim
patent: 2006/0139059 (2006-06-01), Jeong
patent: 2004-236164 (2004-08-01), None
patent: 2006-262074 (2006-09-01), None
patent: 10-2004-0039592 (2004-05-01), None
patent: 1020040039582 (2004-05-01), None
patent: 10-2005-0122292 (2005-12-01), None
patent: 10-2006-0067772 (2006-06-01), None
patent: 10-2006-0073804 (2006-06-01), None
Bae Seung-Jun
Chung Dae-Hyun
Kim Jin-Gook
Mills & Onello LLP
Nguyen Hai L
Samsung Electronics Co,. Ltd.
LandOfFree
Level shifter of semiconductor device and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Level shifter of semiconductor device and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Level shifter of semiconductor device and method for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4247404