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:
Mar. 29, 2011
Filed:
May. 31, 2007
Allen Walston, Sandy Springs, GA (US);
Allen Walston, Sandy Springs, GA (US);
ARRIS Group, Inc., Suwanee, GA (US);
Abstract
A predetermined current frequency is selected for a cable modem or embedded media terminal adapter to evaluate for presence of a CMTS signal. A determination is made whether the current frequency carries signal energy as opposed to just noise. If no signal energy is detected, the current frequency is changed by ½ of a channel width to a new frequency, which becomes the current frequency, and the determination is re-performed. If the determination of the current frequency indicates that signal energy is present, but not CMTS energy, then a new frequency indicates that selected that differs from the current frequency by 1 MHz. If the determination at the current frequency indicates that CMTS signal energy is present, but QAM lock cannot be achieved, then a new frequency is selected by changing from the current frequency by a full channel width.