The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2009
Filed:
May. 08, 2006
Ugo Mari, Tremestieri, IT;
Santi Carlo Adamo, Gravina di Catania, IT;
Gaetano Di Stefano, Palermo, IT;
Fabrizio Meli, Misterbianco, IT;
Ugo Mari, Tremestieri, IT;
Santi Carlo Adamo, Gravina di Catania, IT;
Gaetano Di Stefano, Palermo, IT;
Fabrizio Meli, Misterbianco, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
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.