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:
Aug. 17, 2004
Filed:
Sep. 22, 2000
Applicant:
Inventor:
Philip J Keller, Fremont, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 1/102 ;
U.S. Cl.
CPC ...
H04Q 1/102 ;
Abstract
A local area data network includes two separate and unique twisted pair telephone networks joined by a coupler to form a common data network. The coupler operates to pass pulse position modulated data signals (PPM) and quadrature amplitude modulate (QAM) data signals between the telephone networks and isolate each plain old telephone service (POTS) signals on one telephone network from the other telephone network.