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:
Nov. 02, 2010
Filed:
May. 01, 2007
Nathan A. Eckel, Fridley, MN (US);
Peter Levinshteyn, Blaine, MN (US);
Gary J. Lucas, Pine Springs, MN (US);
Nathan A. Eckel, Fridley, MN (US);
Peter Levinshteyn, Blaine, MN (US);
Gary J. Lucas, Pine Springs, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
The current invention provides a mechanism for detecting and recovering from glitches on data strobes. In one embodiment, data is captured from an interlace by a receiver using at least one data strobe that is provided by the transmitter along with the data. A write address counter that is clocked by the data strobe is used to count the active edges of the data strobe. A read address counter that is periodically synchronized with the write address counter, but that is clocked by an internal clock of the receiver, is used to count units of data being received from the interface. Periodically, the contents of the read and write counters are compared. If the contents are not the same, a glitch has occurred on the data strobe. The glitch is recoverable if it occurs on, or after, a last strobe edge of a data transfer.