CATV network for transport of radio frequency signals
First Claim
1. A communication network, comprising:
- a coaxial cable network;
a cable television head end coupled to transmit a first set of signals on said coaxial cable network within a separated first and a second frequency band;
a telecommunication network device coupled to transmit on said coaxial cable network a second set of signals within a third frequency band, the third frequency band including frequencies that are higher than the first frequency band and lower than the second frequency band; and
wherein said cable television signal head end further transmits at least one cable television channel signal on said coaxial cable network within said third frequency band.
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Accused Products
Abstract
A communication system is coupled to a cable television network wherein cable television signals, data signals and telephonic signals are transmitted on the coaxial cable infrastructure. To facilitate the simultaneous transmission of cable signals, data signals and telephonic signals, a frequency spectrum is defined for a coaxial cable network in which a band of frequencies for carrying telephonic signals is interposed in the cable television signals bands of frequencies. In a coaxial cable system capable of carrying signals up to 1 megahertz in frequency, a total of 5 frequency bands are defined. Within the frequency band for carrying telephonic signals, signals from a PCS system or the like as well as signals from other telecommunication devices, one system, such as SMS centers, base stations and mobile switching centers may be transmitted. Additionally, television channels may also be transmitted in this frequency band if the beginning of the frequency is at a frequency channel for carrying a cable television channel. A method includes transmitting the various types of signals within the specified frequency bands.
159 Citations
22 Claims
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1. A communication network, comprising:
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a coaxial cable network; a cable television head end coupled to transmit a first set of signals on said coaxial cable network within a separated first and a second frequency band; a telecommunication network device coupled to transmit on said coaxial cable network a second set of signals within a third frequency band, the third frequency band including frequencies that are higher than the first frequency band and lower than the second frequency band; and wherein said cable television signal head end further transmits at least one cable television channel signal on said coaxial cable network within said third frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of transmitting television channel signals and telephonic signals over a single communication medium, the method comprising the steps of:
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transmitting television channel signals over a separated first frequency band and second frequency band; transmitting telephonic signals over a third frequency band, the third frequency band being interposed between the separated first and second frequency bands; and transmitting at least one television channel signal within the third frequency band. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification