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. 29, 2005
Filed:
Jun. 07, 2001
Ross A. Jeffery, Uxbridge, CA;
Marc C. Jairam, Scarborough, CA;
Ross A. Jeffery, Uxbridge, CA;
Marc C. Jairam, Scarborough, CA;
Techbanc Inc., Toronto, CA;
Abstract
A point-to-multipoint communications network connecting multiple subscribers to a single communications line. A plurality of subscriber communications interfaces are connected in parallel to form a local group in which one communications interface serves as a master communications interface and the other communications interfaces serve as slaves. Each communications interface may be capable of serving as the master communications interface according to a demand division multiplexing technique, which assigns master status based on upstream data demands. As a communications interface is switched to master status, the communications interface previously holding master status is switched back to slave status. A plurality of communications interfaces can thus be connected to a single communications port without increasing the upstream transmission bandwidth requirements. Each network modem may communicate at a frequency separated from the frequencies of the other network modems, to substantially increase the bandwidth of the transmission medium.