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:
Apr. 14, 2009
Filed:
Jul. 31, 2002
Carl Damien Murray, Dublin, IE;
Philip Curran, Dublin, IE;
Alberto Molina Navarro, Madrid, ES;
Agere Systems, Inc., Allentown, PA (US);
Abstract
In a 1000 BASE-T transceiver, a timing error detector (TED,) receives its inputs directly from the output of an ADC () and from a decision device (). Timing recovery is acquired in three stages: a non-decision directed (NDD) stage during which only the output of an ADC () are used for acquisition; a stage for acquiring the remote scrambler and predicting symbols; and a decision-directed (DD) stage during which locally predicted symbols are also used for acquisition. Because the timing error detector (TED,) does not take inputs from the FFE () there is no information about cable length, and so an input of gain from an AGC is used to indicate cable length.