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. 12, 2024
Filed:
Sep. 18, 2020
Arris Enterprises Llc, Suwanee, GA (US);
Xing Feng, Shenzhen, CN;
Jinji Guo, Shenzhen, CN;
Pingbo Liu, Guangdong, CN;
Feng Li, Guangdong, CN;
ARRIS ENTERPRISES LLC, Horsham, PA (US);
Abstract
A network device for providing single-carrier quadrature amplitude modulation (SC-QAM) downstream channel fast pre-scanning. An orthogonal frequency-division multiplexing (OFDM) downstream (DS) channel scan in a foreground process and a single-carrier quadrature amplitude modulation (SC-QAM) DS channel scan in a background process are simultaneously performed. When a first OFDM downstream channel is locked onto, OFDM downstream channel is paused while scanning for SC-QAM downstream channels continues. SC-QAM DS channels identified in the background process are stored in a table. Based on a scan of all OFDM channels and failure to lock onto any OFDM DS channels, the SC-QAM DS channel scan in the background process is stopped and a normal SC-QAM DS channel scan is started. SC-QAM DS channels in the table are scanned first to provide fast pre-scanning. A modem becomes operational with a qualified SC-QAM DS channel obtained from the table.