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. 08, 2011
Filed:
Jun. 07, 2010
Dongsoo Daniel Koh, Irvine, CA (US);
Ramon Alejandro Gomez, San Juan Capistrano, CA (US);
Francesco Gatta, Laguna Niguel, CA (US);
Harold Raymond Whitehead, Duluth, GA (US);
Donald G. Mcmullin, Laguna Hills, CA (US);
Dongsoo Daniel Koh, Irvine, CA (US);
Ramon Alejandro Gomez, San Juan Capistrano, CA (US);
Francesco Gatta, Laguna Niguel, CA (US);
Harold Raymond Whitehead, Duluth, GA (US);
Donald G. McMullin, Laguna Hills, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
An apparatus and method is disclosed to calculate the actual received desired channel power from the downstream transmit power of a Cable Modem Termination System (CMTS) when operating at the nominal line voltage and/or at the normal room temperature as per the DOCSIS specification. A Set-top Device produces a Downstream Power Management (DPM) gain measurement signal having a known power level. The Set-top Device embeds the DPM gain measurement signal onto a received downstream multi-channel communication signal. After embedding the DPM gain measurement signal onto the downstream multi-channel communication signal, the Set-top Device downconverts the combined DPM gain measurement signal and downstream multi-channel communication signal to recover one or more communication channels containing information of a broadcast. The Set-top Device measures a power level of a representation of the DPM gain measurement signal embedded within the one or more communication channels containing the information of the broadcast to determine a Set-top Device gain. The Set-top Device measures a power level of the one or more communication channels containing the information of the broadcast. The Set-top Device calculates the actual received desired channel power from the downstream transmit power of the CMTS based on the Set-top Device gain and the power level of the one or more communication channels containing the information of the broadcast.