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7409159 |
Wireless wavelength division multiplexed system
A system and method for linking optical wavelength division multiplexed (OWDM) networks by using wireless communications. Each optical channel in a OWDM network is coupled to a wireless wavelength...
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7324631 |
Method and apparatus for delivering secured telephony service in a hybrid coaxial cable network
A hybrid coaxial cable network employing interdiction to ensure privacy in telephony communications. The video and telephony signals are secured such that telephony and interactive video signals to...
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7215928 |
Path selection in wireless networks
In a wireless network, a lowest cost path from a source node to a target node is selected from a plurality of potential paths. The source node sums costs for the links of each potential path. For...
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7194639 |
Power adapter and broadband line extender system and method
A power adapter, in a presently preferred embodiment, includes a power converter and multiple data ports, and is configured for ease of coupling the power converter into pre-existing premises power...
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7116761 |
Fiber to the curb and fiber to the neighborhood power architecture
A system and method of powering a fiber optic communication network are provided which transmits communication data between a telephone company central office and remote user device. The system...
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7095957 |
Optical/radio local access network
A communication system includes a plurality of nodes and a plurality of point-to-point links that interconnect the plurality of nodes into a network. Each node includes an optical switch to...
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7003321 |
Mobile communication system and switching apparatus
When a signal is sent from a wireless base station 3 - 1, a wireless modem 10 - 1 converts the signal to a signal of a unified transmission form. The switch 11 - 1 switches the signal to one...
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6980089 |
Non-intrusive coupling to shielded power cable
The invention describes a method and a device for transporting a signal over a power line. The inventive method includes inducing an alternating current (AC) voltage from the power line, powering a...
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6807374 |
Mobile communication system
An optical transmission system for mobile communication compensates for disadvantages of the star type and the multicipital type systems. In the system, a radio modem for per forming...
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6662367 |
Poly-phase filters in multicarrier communication systems
A head end terminal for a communication system using multicarrier modulation is described. The head end terminal includes a multicarrier modem adapted to receive upstream signals and to demodulate...
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6658217 |
Optical receiver
An optical receiver generates a voltage signal having a predetermined swing from a current signal, and feeds the voltage signal to a decision circuit. An optical receiving element receives the...
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6633629 |
Wave division multiplexed switch fabric
A plurality of switching modules ( 102 ) are interconnected via an optical link ( 104 ) to form a switching system ( 100 ). Different wavelengths of the optical link ( 104 ) are used to selectively...
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6487405 |
Communication system with multicarrier telephony transport for controlling a plurality of service units
A method for controlling a plurality of service units in a telecommunications system with a multi-carrier transmission scheme is provided. Specifically, in one embodiment, the method includes...
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6392770 |
Multi-point optical transmission system
Radio base stations subject each code-division multiplex signal to frequency conversion so as to vary each frequency thereof according to the radio base stations and then converts the signal to an...
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6393105 |
Method and apparatus for monitoring local telephony service power on a hybrid fiber-coax network
An apparatus. and method of powering a cable telephony service platform (CTSP) in a hybrid fiber coax (HFC) network are provided which utilizes a combination of power from a local AC driven power...
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6377782 |
Method and apparatus for communicating between a client device and a linear broadband network
A method of upstream communication over a linear broadband network includes the steps of generating an upstream baseband signal and modulating it onto an upstream wireless radio frequency carrier...
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6314163 |
Hybrid universal broadband telecommunications using small radio cells interconnected by free-space optical links
Diverse communication terminals attach via broadband radio to a communications network at any of typically three hierarchical cell sizes increasing from, typically, a single building to a city to a...
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6285857 |
Multi-hop telecommunications system and method
Free-space, line-of-sight, electro-magnetic communication (i.e., via light or microwaves) is employed to provide a wide range of communication services to geographically scattered users. A relay...
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6246750 |
Fiber optic based subscriber terminal
A subscriber terminal (22) within a business/residence (32) is in communications with a telecommunications network (12) through a fiber optic connection (33) to an optical network unit (20)....
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6161011 |
Hybrid fiber coax communications systems
A communications system includes first and second fiber optic links, each including at least one fiber optic cable, and a coaxial distribution plant including coaxial distribution lines and a...
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6122083 |
Mobile communication system having a small base station and equipment for its system
A mobile communication system having a small base station provides radio communications between the small base station and a mobile station. The small base station is connected with a central...
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6028916 |
Method and apparatus for maintaining availability of lifeline telephony service on a hybrid fiber-coax network
An apparatus and method of powering a cable telephony service platform (CTSP) in a hybrid fiber coax (HFC) network are provided which utilizes a combination of power from a local AC driven power...
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5969837 |
Communications system
This invention discloses a wireless communications station including a base unit including a communications interface for communicating with plural wireless communications networks, a received...
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5802173 |
Radiotelephony system
A multichannel radiotelephony system provides two way cordless communications with a plurality of multichannel transceivers portable within a coverage area comprised by a plurality of cells, each...
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5666402 |
Fiber optic telephone line extension system
Apparatus far providing telephone communication between a communication network and a remote station employs base and remote modems and a fiber optic communication link connecting the modems. The...
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5664002 |
Method and apparatus for providing power to a coaxial cable network
A fiber optic/coaxial cable telephony network including power. Power is supplied through the coaxial cable portion of the video network to a cable network unit where the power is converted and...
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5623531 |
Auxiliary power for telephone distribution system
A telephone and auxiliary power distribution system includes an optical fiber in joint combination with one or more copper conductors to provide electric power for powering the various electronic...
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5615246 |
Method and apparatus for spurious signal detection and disconnection in a hybrid fiber/coax network architecture
A device for detecting the presence of spurious energy on a bus based network. The device identifies the subscriber location which is the source of spurious energy and includes disconnection...
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5469495 |
Method and apparatus for delivering secured telephone service in hybrid coaxial cable network
A hybrid coaxial cable network employing interdiction to ensure privacy in telephony communications. The video and telephony signals are secured such that telephony and interactive video signals to...
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5457557 |
Low cost optical fiber RF signal distribution system
A fiber optic RF signal distribution system has a plurality of antenna stations, each station including an RF antenna. A central RF signal distribution hub receives and transmits signals external...
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5377035 |
Wavelength division multiplexed fiber optic link for RF polarization diversity receiver
A single transmission optical fiber is used to transmit RF signals of the same frequency but different polarization from a source to a polarization diversity receiver without introducing...
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5355401 |
Method and apparatus for providing telephony power through a coaxial cable network
A fiber optic/coaxial cable telephony network including power. Power is supplied through the coaxial cable portion of the video network to an optical network unit where the power is converted and...
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5339184 |
Fiber optic antenna remoting for multi-sector cell sites
A base station in a cellular communications system is connected to a plurality of remote cellular sites by a communications link having a base terminal coupled to a remote terminal by two optical...
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5278690 |
Apparatus and method for synchronizing a plurality of remote transmission and receiving stations and providing automatic gain control of the synchronizing signal
System synchronization is achieved in a system of remote stations serving a particular cell site or base station by combining rf signals transmitted to the base station from the cell site with a...
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5245649 |
Selective call receiver capable of being coupled to a telephone answering machine
A communication system (10) includes a selective call receiver (12) for receiving transmitted information coupled to a telephone answering machine (44) via a fiber optic cable (48). The fiber optic...
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5170449 |
Converting device using an optical fiber
A optical talk set has a talk set including bending means for bending an optical fiber of an optical cable, vibration applying means for applying vibration to the optical fiber, and a...
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4581770 |
Fail safe repeater for fiber optic bus distribution system
Redundant repeaters are positioned along a fiber optic (FO) bus of a data transmission system, each comprising a first star coupler having an input port connected to the FO bus and having N output...
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4503532 |
Multipoint fiber optic junction terminal
In an intercom system, electrical noise interference is alleviated by interconnecting the tranceivers and receivers with the control sets via fibre optic lines. Audio signals are applied to a...
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3553675 |
Title is not available
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