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. 25, 2008
Filed:
Feb. 02, 2004
Benny Madsen, Los Altos, CA (US);
Christian Olgaard, Sunnyvale, CA (US);
Carsten Andersen, Sunnyvale, CA (US);
Gary Wang, Milpitas, CA (US);
Thomas Toldborg Andersen, Pleasanton, CA (US);
Peter Petersen, Concord, CA (US);
Benny Madsen, Los Altos, CA (US);
Christian Olgaard, Sunnyvale, CA (US);
Carsten Andersen, Sunnyvale, CA (US);
Gary Wang, Milpitas, CA (US);
Thomas Toldborg Andersen, Pleasanton, CA (US);
Peter Petersen, Concord, CA (US);
LitePoint Corp., Sunnyvale, CA (US);
Abstract
A method and apparatus for generating a reference transmission signal for use in testing a communications system. A data packet transmission signal containing a plurality of reference data is captured and digitized, following which reference data is retrieved. The retrieved data is used to modulate a carrier signal to produce a digital transmission signal, which is stored for later use, such that impairments in a signal from a traditional trusted unit are substantially removed, thereby minimizing uncertainty during later testing using such signal.