CATV video and data transmission system with RF input

摘要

Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter.

主权项

1. A method for delivering CATV content between a head end and a node over a fiber optic network, said method comprising:
(a) receiving a radio frequency (RF) spectrum including CATV content; (b) encoding the signals in the RF spectrum based on a modulation format for a destination node; (c) frequency converting the encoded signals and generating a digital representation of a RF spectrum comprising a series of digital codewords, each codeword representing an instantaneous power level of the RF spectrum based on a high speed conversion clock,
wherein said digital codewords are generated based on the high speed conversion clock without generating a corresponding RF waveform, the generated codewords represent a relative power level of the composite RF spectrum at intervals of the conversion clock, and the conversion clock is at least twice the maximum frequency contained in the RF spectrum; and (d) propagating said digital codewords onto said fiber optic network, said digital signal representing said RF spectrum of said CATV content.