Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Reexamination Certificate
2005-03-15
2005-03-15
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
C327S264000
Reexamination Certificate
active
06867629
ABSTRACT:
The present invention relates to an integrated circuit device and method of adjusting capacitance of a node of an integrated circuit In one embodiment, the device comprises a first digital input, a first parasitic capacitance block, a first output, a second digital input, a second parasitic capacitance block and a second output. The first parasitic capacitance block includes an inverter, a variable capacitance element, and a wire capacitance element. The first parasitic capacitance block has a capacitance that is a function of the first digital input. The first output is responsive to the first parasitic capacitance block, and the second output is responsive to the second parasitic capacitance block. In a particular embodiment, the method includes selecting a logic state of a digital input; applying the digital input to a parasitic capacitance block having an output, the output having a first capacitance when the digital input is in first logic state and a second capacitance when the digital input is in a second logic state; and adjusting a capacitance with respect to a second circuit node within the integrated circuit by applying the output to the second circuit node.
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Dally, William J. and Poulton, John W., Digital Systems Engineering, The Press Syndicate of the University of Cambridge, 1993, p. 590-591.
Bosnyak Robert J.
Drost Robert J.
Le Dinh T.
Sun Microsystems Inc.
Zagorin O'Brien Graham LLP
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