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:
Jul. 23, 2002
Filed:
Dec. 11, 1998
Colin Johnstone, Fife, GB;
William Ross MacIsaac, Fife, GB;
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
The invention provides a method of identifying framing bits in order to correctly frame a test signal comprising a data payload in the form of a pseudo random binary sequence (PRBS), split into frames by a number of framing bits, after disruption and re-establishment of transmission of the test signal. The method comprises comparing the test signal to a comparison PRBS, and determining the position of the framing bits, or other non-payload data, based on the position of mismatches between the incoming test signal and the comparison PRBS. Errors may be deliberately introduced before transmission of the test signal, in a predetermined position relative to the non-payload data bits, so that analysis of the payload data is used to identify the framing elements.