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7415205 Wavelength division multiplexed self-healing passive optical network using wavelength injection method  
A wavelength division multiplexed self-healing passive optical network using a wavelength injection method includes a central office for coupling modulated multiplexed optical signals (MMOS) and...
7412169 FTTH system for convergence of broadcasting and communication through switched broadcasting  
A fiber to the home FTTH network for convergence of broadcasting and communication is disclosed. The network includes: an OLT for receiving and converting a first predetermined number of broadcast...
7406103 Method and apparatus for transmitting data in Gigabit Ethernet passive optical network  
A method and apparatus for transmitting data from an optical network unit (ONU) to an optical line termination (OLT) in a Gigabit Ethernet passive optical network (GE-PON) on the basis of a time...
7403712 Matrix time division multiplex (MTDM) interrogation  
Embodiments of present system encompass: a plurality of laser sources that produce a plurality of respectively different optical wavelengths; a matrix switch having a plurality of inputs...
7398021 Optical transmitter and passive optical network using the same  
An optical transmitter including a multi-lambda source to output injection light consisting of a plurality of injection wavelengths in channels, a circulator having a first port, a second port, and...
7389048 Optical wavelength-division multiple access system and optical network unit  
The present invention provides an optical wavelength-division multiple access system and a corresponding optical network unit. A wavelength band Da (wavelengths λd 1 to λdn) for downlink optical...
7389047 Optical ring transmission network  
The network comprises an optical ring link (F) and a concentrator (HUB) that sends via one end of the link “downlink” optical signals carried by respective wavelengths and receives “uplink”...
7386621 Efficient and reliable transmission via a hybrid broadcast-point-to-point system  
In wireless networks, data objects are typically transferred from a data distributor to a data recipient by reliable point-to-point communication between the distributor and the recipient. However,...
7386238 Method and system for infrared data communications  
A method and system for conveying contextually relevant information to a wireless client are disclosed. More particularly, a transmitter transmits a diffuse infrared signal to a client having an...
7386236 Multiple wavelength TDMA optical network  
A passive optical network which employs multiple wavelengths to increase overall system bandwidth, with each wavelength being shared by multiple optical network units (ONUs) according to a time...
7382982 Ethernet passive optical network for integrating broadcast and communication based on time division multiplexing scheme  
An Ethernet-PON integrates broadcast/communication through time division multiplexing, which provides users with high-speed, high-volume communication data and high-quality, real-time digital...
7382981 Digital optical transmitter  
A cable television system ( 100 ) having forward and reverse paths includes, in the reverse path, a digital optical transmitter ( 200 ) for receiving an RF signal, converting it to a digital...
7379669 Method and apparatus for duplex communication in hybrid fiber-radio systems  
An apparatus and method for enabling cost-effective duplex communication by diplexing one of down stream signals for frequency up-conversion in a hybrid fiber-radio system includes diplexing an...
7373084 Optical network termination device for use in passive optical network based on WDM/SCM scheme  
A termination device for use in a WDM-SCM PON system can effectively support a multi-channel integration function of a WDM/SCM PON system. The termination device contained in a termination end of a...
7372854 Communication node system, control node system, and communication system using node systems in ethernet-passive optical network  
A communication node system for an Ethernet-PON includes: an LLID register for storing an LLID being an allocated identifier; a preamble generator for generating a PON preamble; a CRC generator for...
7371014 Monolithic active optical cable assembly for data device applications and various connector types  
A monolithic cable assembly includes a communication cable and cable connectors coupled to either end of the communication cable. The communication cable includes at least one optical communication...
7369771 Optical network terminator and optical network connection method using it  
An optical network terminator of the present invention includes an optical wavelength division multiplexer for receiving an optical signal and incoherent light. An optical detection unit converts a...
7369769 Ethernet passive optical network ring and its method of authorization and collision detection  
An Ethernet passive optical network (EPON) ring for providing protection against fiber failures. The optical network unit (ONU) is coupled to the ring fiber by a three-port passive optical...
7366417 Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch  
A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM...
7366416 Hub for a passive optical network hub  
A hub for use in a passive optical network (PON) includes a transmission fiber on which an information-bearing optical signal is received, a double-cladded, rare-earth doped fiber located along the...
7366415 Wavelength division multiplexing-passive optical network capable of integrating broadcast and communication services  
Disclosed is a wavelength division multiplexing-passive optical network (WDM-PON) that integrates broadcast and communication data, and transmit using WDM. An optical line terminal (OLT), connected...
7349616 Fiber optic local convergence points for multiple dwelling units  
There are provided fiber optic local convergence points (“LCPs”) adapted for use with multiple dwelling units (“MDUs”) that facilitate relatively easy installation and/or optical...
7340180 Countermeasures for idle pattern SRS interference in ethernet optical network systems  
Optical networks as defined by the IEEE 802.3ah standard suffer from Stimulated Raman Scattering (SRS) that causes data transmission at a first optical wavelength to interfere with broadcast video...
7340171 FTTH system for broadcast/communication convergence using IEEE 1394  
A broadcast/communication convergence system, and an FTTH (Fiber To The Home) system that can accommodate broadcast signals of various channels and variable band signals by converging broadcast and...
7330654 Ethernet passive optical network and point-to-point emulation method  
Disclosed is a point-to-point emulation method for operating an Ethernet passive optical network having an optical line terminal (OLT) and a plurality of optical network units (ONUs) each connected...
7321730 Method and apparatus for the transmission fault detection in an access network  
An optical network unit (ONU) interconnected by passive optical network (PON) equipment to an optical line terminal (OLT) is identified using secondary modulation of the optical carrier to impress...
7319817 System for transparent node for WDM shared “virtual ring” networks  
A system and method for a transparent WDM metro ring architecture in which optics enables simultaneous provisioning of dedicated wavelengths for high-end user terminals, while low-end user...
7298975 Synchronous collapsed ring architecture for real-time signal switching and distribution  
A method and system includes at least one interconnect hub, connecting the at least one interconnect hub to a plurality of audio connection devices to form a network of audio connection devices...
7295776 Optical LAN device  
An ring type optical LAN device includes a master node and a plurality of slave nodes that are interconnected by an optical fiber cable. A plurality of optical bypass transmission lines are...
7289732 Broadcast/communication unified passive optical network system  
Disclosed is a broadcast/communication unified passive optical network system. The network system comprises: an optical line termination that time-division multiplexes the received digital...
7289731 Optical network termination with automatic determination of geographic location  
An optical network termination (ONT) apparatus can determine its own geographic location information automatically, thereby permitting the ONT to report its geographic location to a management...
7286761 Method of flexible multiple broadcast service delivery over a WDM passive optical network based on RF Block-conversion of RF service bands within wavelength bands  
A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally...
7286564 Mapping arbitrary signals into SONET  
A synchronizer/de-synchronizer maps continuous format signals of an arbitrary rate into frames of pre-selected single common rate, such as SONET frames, with no bite changed and very little jitter...
7283749 Fiber and wire communication system  
This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives...
7280757 Metropolitan networks based on fiber and free space access distribution system  
An architecture for facilitating wavelength-specific and packet-switched routing comprises a primary metropolitan fiber ring, a primary distribution/aggregation node in the primary metropolitan...
7272313 System with node apparatuses in IP/WDM network  
A system, including: a source node apparatus; a destination node apparatus; the source node apparatus and the destination node apparatus both being in an Internet Protocol/Wavelength Division...
7266298 N-way broadcast/narrowcast optical combiner demultiplexing a multiplexed narrowcast input signal  
Systems and methods are described for an optiplex. A method includes: demultiplexing a multiplexed narrowcast input signal into a first narrowcast signal and a second narrowcast signal; conveying...
7266296 Architecture and method for framing control and data bursts over 10 Gbit Ethernet with and without WAN interface sublayer support  
An optical network, which includes edge and switching nodes, optically communicate information formatted into statistically multiplexed control and data bursts and/or metadata that are framed...
7257327 Wireless communication system with high efficiency/high power optical source  
An optical communication system is provided which includes an optical signal transmitter which communicates high bandwidth, high power frequencies. The optical signal transmitter includes a high...
7248802 Distribution of a synchronization signal in an optical communication system  
The invention relates to the distribution of a synchronization signal in an optical communication system which is inherently asynchronous. In order to accomplish a cost-efficient mechanism for...
7242868 System and method for performing high-speed communications over fiber optical networks  
Processing a received optical signal in an optical communication network includes equalizing a received optical signal to provide an equalized signal, demodulating the equalized signal according to...
7242859 Method and system for providing protection in an optical ring communication network  
A method and system for providing tandem protection in a communication system. Path protection is provided using at least two redundant communication paths and selecting the communication having...
7239813 Bit synchronization circuit and central terminal for PON systems  
A bit synchronization circuit composed of a multiphase data sampling unit for converting each received burst data sets to multiphase data trains, a phase determination unit for generating a control...
7239808 Subscriber interfacing device in communication-broadcasting convergence FTTH  
A subscriber interface device and method for transmitting a communication signal and a broadcasting signal to each subscriber in a communication-broadcasting convergence FTTH system. A subscriber...
7236708 Optical communication system with optical output level control function  
An optical communication system can increase a minimum optical reception level or the number of connectable optical receivers by controlling optical output levels of its optical transmitter. The...
7228072 System and method for integrating a fiber optic fixed access network and a fiber optic radio access network  
A system and method are described for integrating a fiber optic fixed access network and a fiber optic radio access network. At least one radio unit transmits and receives communications with at...
7221870 Ring map discovery and validation method and system for optical network applications  
A method and system for generating a ring map for optical network applications. The method includes sending a first discovery message to a first node through a portion of an optical network. The...
7209667 Methods of connecting and testing interfaces for CWDM fiber-optic systems  
The invention concerns a method of connecting a subscriber unit ( 12 ) to a fiberoptic communication network ( 14 ) via a fiberoptic interface device ( 30 ) adapted to function as an interface...
7209663 Apparatus and method for repeating signal by using wireless optical transmission  
A repeating apparatus and method using wireless optical transmission is disclosed. The repeating apparatus includes a donor device for transmitting two identical copies of an optical signal by...
7209497 System and method for spectral node splitting in a hybrid fiber optic-coaxial cable network  
A system and method for spectral node splitting in cable TV network based on hybrid fiber-coax architecture is disclosed. Two-way optical signals carrying video and/or multimedia content are...
Matches 1 - 50 out of 187 1 2 3 4 >