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| Number | Title | Issue Date |
| 7925162 | Communication system and method for an optical local area network An optical local area network includes a passive optical distribution fabric interconnecting a plurality of nodes including a first node and a plurality of remaining nodes, a hub that includes the first node and a control module, and a client network adapter coupled... | 04/12/2011 |
| 7729614 | Data distribution system and method A data distribution system transmitting and receiving a large capacity of data such as image data smoothly without incurring a delay over an optical fiber line located between a data sever and a client device. In the data transmission system, a plurality of client d... | 06/01/2010 |
| 7460786 | System and method of data transmission in tension members of a fiber optical system A system and method transmits graphic data received at varying frequencies at a fixed data rate. The frequency dependent data and associated data clock signal are received and the frequency dependent data is converted to frequency independent data. A ratio of a numb... | 12/02/2008 |
| 7440697 | Data bus for a plurality of nodes An apparatus and method for detecting optical defects in optical bus systems which use optical modules in communication with a plurality of nodes connected to each other. Deterioration of the optical transmission quality is detected as a resulting deterioration in a... | 10/21/2008 |
| 7421168 | Integrated optical channelizer A signal channelizer (10) includes an input waveguide (14) carrying an inputted signal (20) having a plurality of wavelengths. The input waveguide (14) has an input port (22) for receiving the inputted signal (20). A plurali... | 09/02/2008 |
| 7403715 | Free space optical bus A free space optical bus system and method are provided for connecting two units of circuitry across a free space gap. A first unit of circuitry includes a multiplexer that combines a plurality of bus signals to obtain an electronic combined signal and a laser that ... | 07/22/2008 |
| 7366368 | Optical add/drop interconnect bus for multiprocessor architecture An optical bus interconnects two or more processors in a multiprocessor system. One or more electrical-to-optical (“E-O”) transmitters are optically coupled to the optical bus using optical couplers. The E-O transmitters receive electrical signals from the proce... | 04/29/2008 |
| 7356042 | Distributed ethernet hub A technique for multiplexing high speed computed data with digitized voice signals onto a fiber optic cable for transfer to a local central office. The data packets of a number of computers are networked by way of a distributed hub that extends to residences, office... | 04/08/2008 |
| 7352603 | Apparatus and methods for optically-coupled memory systems Optically-coupled memory systems are disclosed. In one embodiment, a system memory includes a carrier substrate, and a controller attached to the carrier substrate and operable to transmit and receive optical signals, and first and second memory modules. The module ... | 04/01/2008 |
| 7349629 | Methods and systems for creating a digital interconnect fabric An optical network provides a digital interconnect fabric allowing nodes to seamlessly communicate with each other. Each node is connected to a bi-directional optical bus through passive optical interface devices. The optical interface devices route signals from eac... | 03/25/2008 |
| 7327954 | Optical signaling to share active channel information A method for optical supervisory signaling includes determining a wavelength channel status (WCS) value, a wavelength channel failure (WCF) value, and a wavelength channel lit (WCL) value for each one of multiple data channels services by an optical communication no... | 02/05/2008 |
| 7308198 | Method for allocating protection bandwidth in a telecommunications mesh network A telecommunications mesh network includes a plurality of nodes each interconnected by an edge. A traffic demand is received having a working path with a link of edges interconnecting a source node with a destination node. The telecommunications mesh network has one... | 12/11/2007 |
| 7308205 | Optical transmission apparatus In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through... | 12/11/2007 |
| 7286760 | Wavelength allocation in regional access network with optical add-drop multiplexers Wavelength assignment schemes that provide full-connectivity in RANs with fixed-tuned OADMs. In the first scheme, wavelengths are assigned to nodes according to Hadamard code, and in the second scheme, bands of contiguous wavelengths are assigned to nodes. Simulatio... | 10/23/2007 |
| 7280381 | Apparatus and methods for optically-coupled memory systems Optically-coupled memory systems are disclosed. In one embodiment, a system memory includes a carrier substrate, and a controller attached to the carrier substrate and operable to transmit and receive optical signals, and first and second memory modules. The module ... | 10/09/2007 |
| 7280382 | Apparatus and methods for optically-coupled memory systems Optically-coupled memory systems are disclosed. In one embodiment, a system memory includes a carrier substrate, and a controller attached to the carrier substrate and operable to transmit and receive optical signals, and first and second memory modules. The module ... | 10/09/2007 |
| 7266265 | Low-loss shared FTTH distribution network A low-loss shared FTTH distribution network that enables optical communications within a subscriber area, including optical fibers routed from a point of distribution to the subscriber area, a tap device including an optical tap which interfaces a downstream optical... | 09/04/2007 |
| 7245832 | Radio communication apparatus An optical bus 30 optically connects each board of a signal processing section 22 and each board of a transmission/reception section 40 for transmitting an optical signal output to the optical bus 30 by each board of the signal processing... | 07/17/2007 |
| 7215666 | Data burst scheduling A method and apparatus for scheduling the transfer of data bursts in a network comprising electronic edge nodes interconnected by bufferless core nodes are disclosed. Each edge node comprises a source node and a sink node, and each core node comprises several buffer... | 05/08/2007 |
| 7200332 | System and method for assigning traffic to wavelengths in optical networks A system and method for assigning a traffic channel to a wavelength in a multi-ring optical network having bifurcated work and protect wavelengths includes determining a transport direction for the traffic channel in a ring of the multi-ring optical network. An inte... | 04/03/2007 |
| 7184669 | Optical transceiver systems and methods Optical systems are provided. A representative optical system includes an optical transceiver with an optical source and an optical receiver. The system also includes an optical waveguide. At least one of the optical source and the optical receiver is optically coup... | 02/27/2007 |
| 7181138 | Optical network connection test apparatus and methods A way of testing a wavelength division multiplexed (WDM) system without requiring connection to data source/sink equipment. A test signal is introduced onto a light path of interest in the system, and the test signal is monitored downstream for signal integrity. Lac... | 02/20/2007 |
| 7149429 | Coarse wavelength division multiplexing system In a ring network comprising a plurality of nodes and a 16 channel coarse wavelength-division multiplexing (CWDM) plan, a technique is disclosed for adding and dropping channels that reduces the maximum attenuation loss that any channel encounters—thereby enabling... | 12/12/2006 |
| 7136585 | Optical amplifiers in a free space laser communication system Disclosed is a novel free space optical communication system comprising an optical amplifier configured to amplify an optical signal received from a fiber optic cable, a transmitter coupled to the optical amplifier and configured to transmit the amplified optical si... | 11/14/2006 |
| 7110668 | Optical network connection test apparatus and methods A way of testing a wavelength division multiplexed (WDM) system without requiring connection to data source/sink equipment. A test signal is introduced onto a light path of interest in the system, and the test signal is monitored downstream for signal integrity. Lac... | 09/19/2006 |
| 7099585 | Memory circuit with an optical input A memory circuit includes a plurality of memory cells, an input/output area for addressing or writing onto the plurality of memory cells by means of electrical signals, and an optical-electrical converter for converting optical signals into the electrical signals, t... | 08/29/2006 |
| 7079536 | Method to perform central control, a line terminator and an element controller realizing such a method and a tree-like network including such a line terminator and an element controller The present invention concerns a method to perform central control of in-line element (Ei) in a tree-like network by a line terminator (LT). A plurality of network terminators (NT1, NT2, . . . , NTi, . . . , NTn) are coupled via one or more of such in-... | 07/18/2006 |
| 7076167 | Optical network unit The present invention includes an optical network unit ONU, connected to a backbone network including a host digital terminal HDT and a digital subscriber line access multiplexor DSLAM of a high-speed data service system, and connected to multiple subscribers, for p... | 07/11/2006 |
| 7072803 | Device and process for acquisition of measurements using a digital communication bus, particularly used during aircraft tests The invention relates to a device for acquisition of measurements using a digital communication bus (10) and a computer system. The device includes a bus arbitrator, several items of slave equipment, and two line termination devices. The bus arbitrator (11... | 07/04/2006 |
| 7058737 | Network device interface for digitally interfacing data channels to a controller via a network The present invention provides a network device interface and method for digitally connecting a plurality of data channels, such as sensors, actuators, and subsystems, to a controller using a network bus. The network device interface interprets commands and data rec... | 06/06/2006 |
| 7050395 | Method and apparatus for disabling an interface between network element data processing units A method and apparatus for disabling a data interface between network element data processing units is described. In one embodiment, the method includes transmitting data frames over a data connection through an interface of a first network element data processing u... | 05/23/2006 |
| 7039312 | Distributed intelligence wavelength division multiplexed network The present invention is directed toward a distributed intelligence fiber-optic communication network in which node control processors (NCPs) associated with each network element periodically transmit identification and status information to the other NCPs in the ne... | 05/02/2006 |
| 7020156 | Multiple device communications A communications protocol for a communications bus wherein messages are transmitted to a plurality of devices communicating by a bus. Each message includes a unique code indicating the end of the message and that same unique code triggers a transfer of communication... | 03/28/2006 |
| 6980737 | Method and apparatus for rapidly measuring optical transmission characteristics in photonic networks An apparatus for determining an error ratio of individual channels of a WDM optical signal comprises a wavelength-selective filter for separating the individual channels of the WDM signal and a measurement circuit for measuring an error ratio of one channel using a ... | 12/27/2005 |
| 6915035 | Variable wavelength optical transmitter output control method therefor and optical communication system The light beam emitted from a variable wavelength light source element 2 is partly directly monitored in a second detector 2 for automatic power control in an APC circuit 14, and is also partly passed through a wavelength filter 5 with th... | 07/05/2005 |
| 6842551 | Backplane wire and noise eliminator tube An optical switch for switching data in a network. The switch includes a housing. The switch includes a transmitter receiver means which transmits to or receives from the network the data. The transmitter receiver means is disposed in the housing. The first optical ... | 01/11/2005 |
| 6823140 | Optical computer bus with dynamic bandwidth allocation A signal communication device for use within a computer includes a set of optical fibers configured to form an optical computer bus between a set of computer sub-system elements of a computer. A set of input optical connector cards are connected to the set of optica... | 11/23/2004 |
| 6782202 | Optical communication method, optical linking device and optical communication system The system includes optical bus-bridging devices for observing the modes of said electric buses and the modes of said optical fibers while said electric buses have not been driven (OFF mode), so that the modes of the two electric buses connected through optical fibe... | 08/24/2004 |
| 6744985 | Data bus for a plurality of nodes A data bus structure for cooperating with a plurality of nodes which are connected to each other. The data bus structure includes optical transmission modules associated with each node and a logical decision gate having inputs associated with each node. The logical ... | 06/01/2004 |
| 6728486 | Communication system and method with optical management bus A communication system includes plural nodes interconnected with an optical transmission medium capable of carrying plural bands of optical channels. A device at each node is coupled to the medium for dropping one or more bands, adding one or more bands, and passive... | 04/27/2004 |
