Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Clock or pulse waveform generating
Reexamination Certificate
2006-05-08
2009-12-01
Pascal, Robert (Department: 2817)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Clock or pulse waveform generating
C327S099000, C327S407000, C331S049000
Reexamination Certificate
active
07626438
ABSTRACT:
An embodiment of a circuit switches between at least a first clock signal and a second clock signal in response to a corresponding switch command, and includes a selection module to select at a switch instant said second clock signal under the control of a signal selector. The circuit comprises a logic-based filter module located downstream of said selection module and configured to produce an outgoing clock signal filtered under the control of a filter signal and also includes a control module configured to receive said switch command and to send said select signal to said selection module delaying said switch instant by a first interval of time, said control module also being configured to send said active filter signal to said filter module in a second interval of time that comprises an edge of the first clock signal and an edge of the second clock signal.
REFERENCES:
patent: 5483185 (1996-01-01), Scriber et al.
patent: 5604452 (1997-02-01), Huang
patent: 5790609 (1998-08-01), Swoboda
patent: 6501304 (2002-12-01), Boerstler et al.
patent: 6593780 (2003-07-01), Lammers
patent: 2005/0012525 (2005-01-01), Starr et al.
Adamo Santi Carlo
Di Stefano Gaetano
Mari Ugo
Meli Fabrizio
Graybeal Jackson LLP
Jablonski Kevin D.
Johnson Ryan J.
Pascal Robert
STMicroelectronics S.r.l.
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