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. 23, 2013
Filed:
Dec. 31, 2007
Yasser Ahmed, Macungie, PA (US);
Xingdong Dai, Bethlehem, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Lane A. Smith, Easton, PA (US);
Yasser Ahmed, Macungie, PA (US);
Xingdong Dai, Bethlehem, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Lane A. Smith, Easton, PA (US);
Agere Systems LLC, Allentown, PA (US);
Abstract
Methods and apparatus are provided for detecting and decoding adaptive equalization training frames (having a frame marker comprised of a string of binary ones and binary zeroes). Training frames are detected by shifting the received data; inserting at least one binary value at one end of the shifted received data to generate a modified version of the received data; applying a logic function to the received data and the modified version of the received data that identifies when corresponding bit positions have different values; and detecting the frame marker when an output of the logic function has a first binary value in an approximate middle of a string of a second binary value. The training frames are decoded using a distance between the approximate center of the frame maker and a predefined binary value in an output of the logic function.