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:
May. 15, 2007
Filed:
May. 30, 2000
Applicants:
Brian Unitt, Bishops Stortford, GB;
Michael Grant, Bishops Stortford, GB;
Jeffrey Farrington, Dunmow, GB;
David Phillips, Bishops Stortford, GB;
Inventors:
Brian Unitt, Bishops Stortford, GB;
Michael Grant, Bishops Stortford, GB;
Jeffrey Farrington, Dunmow, GB;
David Phillips, Bishops Stortford, GB;
Assignee:
Nortel Networks Ltd., St. Laurent, Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A passive optical network suitable for use as a telecommunications access network, having a head-end transmitting in a first optical frequency and one or more subscriber stations transmitting on a second common optical frequency. A carrier sense, multiple access protocol, with collision detection, is used, the collision detection being performed in the subscriber and head-end stations.