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:
May. 15, 2007
Filed:
Dec. 23, 2005
James D. Chlipala, Emmaus, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
James D. Chlipala, Emmaus, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
Methods and apparatus are provided for adaptive determination of timing signals, such as on a high speed parallel bus. The invention adaptively determines a timing signal having a first edge with respect to an internal clock, wherein the timing signal includes a period in which the timing signal is undriven, followed by a period immediately before a first transition in which the timing signal is in a predefined state. The timing signal is evaluated using one or more comparators; and an output of the one or more comparators are latched based on a clock signal. The clock signal is adjusted until the one or more comparators indicate the timing signal is in the known and valid state. The clock signal is further adjusted until the one or more comparators indicate the first transition has been reached. Thereafter, a gating control signal is established based on a timing of the first transition.