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| Number | Title | Issue Date |
| 8019222 | Digital encoding of labels for optical packet networks Methods and apparatuses are provided for transmitting labels in an optical packet network. Groups of K payload bits are encoded into blocks of N bits by using a code in which each of the groups of K payload bits is represented by a corresponding one of at least two ... | 09/13/2011 |
| 7991288 | Optical code division multiple access data storage encryption and retrieval OCDMA systems provide for storage and retrieval of OCDMA data while maintaining OCDMA encoding. One system includes an optical splitter that receives an OCDMA data stream having a multiple wavelengths of light. A plurality of tunable light filters is optically inter... | 08/02/2011 |
| 7983562 | Dynamic coding for optical code-division multiple access An apparatus and methods for encoding and decoding data are disclosed. The method for transmitting and receiving data allows for coding and decoding each bit of data with a different code. The transmitter and receiver devices allow encoding and decoding, respectivel... | 07/19/2011 |
| 7983563 | Internet protocol routing with optical code division multiple access Systems, networks, and methods of providing an Internet protocol routing network are disclosed. One Internet protocol routing network includes: a number of local subnet routers, where the routers are Internet protocol (IP) enabled; a single mode optical fiber cable,... | 07/19/2011 |
| 7860395 | Optical access network system An optical access network system capable of transmitting and receiving high-speed signals and which allows the number of subscribers to be increased without increasing the number of wavelengths used is provided. An optical line terminal and an optical network unit a... | 12/28/2010 |
| 7809267 | Coherent gated receiver The present invention is directed to a coherent gated receiver. The receiver includes a decoder operable to receive an optical signal and generate a decoded optical signal, the decoder comprises a demultiplexer operable to spatially distribute the optical signal, a ... | 10/05/2010 |
| 7778548 | Optical communication system, lighting equipment and terminal equipment used therein A communication system has lighting equipment that has transmitter comprising multiple light-emitting elements that each emit light of different wavelengths and terminal equipment that has light-receiver comprising multiple light-receiving elements that receive opti... | 08/17/2010 |
| 7773882 | Optical code-routed networks Communication is provided between at least two of a plurality of stations. A signal is received from a first one of the plurality of stations, and the signal is coded using a first code that is assigned to that station. The coded signal is converted to obtain a furt... | 08/10/2010 |
| 7689124 | Two-dimensional optical CDMA system, PN coded wavelength/time encoder and decoder therein, and method of encoding/decoding Disclosed herein are a CDMA optical system and encoder and decoder included therein. Time domain encoding means creates a time domain code having a sequence according to inputted data bits or a complementary code which is complementary to the time domain code. An op... | 03/30/2010 |
| 7536105 | Synchronous data transmission from plural remote radio devices in W-CDMA base station A W-CDMA base station is disclosed in which a base band processing device and a plurality of remote radio devices are provided and downward data is transmitted from the plurality of remote radio devices at the same time. The base band processing device inserts a syn... | 05/19/2009 |
| 7444047 | Multiplexing optical system A multiplexing optical system includes collimator lenses, a first condensing lens, a second condensing lens and an optical fiber. The collimator lenses collimate divergent laser beams that have been emitted from semiconductor lasers. The first condensing lens conden... | 10/28/2008 |
| 7433603 | Using active and passive optical components for an optical network In one embodiment, the present invention includes a network hub having an active optical encoder where the network hub is to generate a plurality of addressed optical data signals, each having a common carrier wavelength and a different address corresponding to a ne... | 10/07/2008 |
| 7421203 | Method for transmitting packet in wireless access network based on wavelength identification code scheme A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network Controllers) to one sub-ring where the “n” is a positive integer, and a... | 09/02/2008 |
| 7418205 | Method and apparatus for controlling a frequency hopping laser An optical spread spectrum communication system includes a tunable laser which sequentially outputs optical signals having different wavelengths. The laser produces a frequency spectrum having a plurality of closely spaced modes relative to optical frequencies. The ... | 08/26/2008 |
| 7406261 | Unified multi-carrier framework for multiple-access technologies A wireless communication system transmits data on multiple carriers simultaneously to provide frequency diversity. Orthogonality is provided by carrier interference, which causes a narrow pulse in the time domain corresponding to each transmitted data symbol. Select... | 07/29/2008 |
| 7391973 | Two-stage gain equalizer An apparatus for selectively adjusting power levels of component signals of a wavelength division multiplexed signal. The apparatus comprises a first filter and a second filter. The first filter modulates the component signals according to a static attenuation profi... | 06/24/2008 |
| 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 division multiple access (TDMA) protocol. The upstream TDMA traffic ther... | 06/10/2008 |
| 7378938 | Strictly nonblocking multicast multi-stage networks A three-stage network is operated in strictly nonblocking manner and includes an input stage having r1 switches and n1 inlet links for each of r1 switches, an output stage having r2 switches and n2 outlet links ... | 05/27/2008 |
| 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 downstream high speed and low speed optical signals into electrical ... | 05/06/2008 |
| 7362972 | Laser transmitter capable of transmitting line data and supervisory information at a plurality of data rates An optical transmitter for sending supervisory data signals and line data signals as a composite optical signal through an optical fiber link is disclosed. The transmitter may take the form of a transmitter, transceiver or transponder and includes circuitry for rece... | 04/22/2008 |
| 7356220 | Apparatus and method for reducing signal noise and OCDMA receiver and method Provided are an apparatus and a method for reducing a signal noise of an OCDMA receiver and an OCDMA receiver and method. The includes: a clock recovery unit extracting sine wave clock from an output signal of an OCDMA decoder including an MAI (multiple access inter... | 04/08/2008 |
| 7349460 | MC/MC-DS dual-mode adaptive multi-carrier code division multiple access (CDMA) apparatus and method thereof Provided are multi-carrier (MC)/multi-carrier direct sequence (MC-DS) dual-mode adaptable CDMA apparatus, the method thereof, and a computer program that implements the method. The apparatus can vary the user modulation degree and the transmission repetition degree ... | 03/25/2008 |
| 7339717 | Method and system for use in optical code division multiple access A method and device are provided for automatically generating a key and a conjugate key to be used in an optical code division multiple access system. The method comprises applying a down conversion process to pump input light to thereby produce down converted broad... | 03/04/2008 |
| 7333727 | Reconfigurable, multi-user communications network, with low latency time The invention concerns a reconfigurable, multi-user optical communications network, with low latency time. It comprises at least one transmitter generating from a digital data signal a brightness-modulated light signal, encoded with a pseudo-random code gener... | 02/19/2008 |
| 7333737 | Optical receiver There is provided an optical receiver in which a time gate can be realized with a simple, low-cost configuration, and which has few aspects that require adjustment. The optical receiver of the present invention comprises a decoding circuit in which optical signals w... | 02/19/2008 |
| 7330656 | Passive optical network employing code division multiple access A PON and a method of transmitting data employing different upstream and downstream transmission protocols are disclosed. The PON includes: a plurality of ONTs; WDM filters; an OLT receiving and transmitting optical signals to and from the ONTs and a higher network;... | 02/12/2008 |
| 7324755 | Optical code-division multiple access transmission system and method An optical code division multiple access transmission and reception system is presented. The transmission system comprises an optical comb generator for producing multiple discrete optical signal components comprising a plurality of equally spaced wavelength compone... | 01/29/2008 |
| 7324753 | Optical communication network using a code division multiplexing method The present invention is a high-speed and low-cost optical communication network. A preferred embodiment of this optical communication network comprises an accommodation device, optical couplers that are connected to corresponding ports of this accommodation device,... | 01/29/2008 |
| 7324754 | Optical code division multiplex transmission method and optical code division multiplex transmission device An object of the present invention is to adjust the operating wavelength of a decoder, in order to coordinate the operating characteristics of an encoder and the decoder. To this end, an optical code division multiplex transmission device of the present invention co... | 01/29/2008 |
| 7317179 | Systems and methods to shape laser light as a homogeneous line beam for interaction with a film deposited on a substrate Systems and methods are disclosed for shaping and homogenizing a laser beam for interaction with a film. The shaping and homogenizing system may include a lens array and a lens that is positioned to receive laser light from the lens array and produce a respective el... | 01/08/2008 |
| 7315664 | Method of identifying and labeling optical conduits A method for labeling or coding optical conduits is disclosed. The method includes providing an optical conduit, and utilizing reflected light resulting from the transmission of at least one light pulse along the optical conduit to generate a multi-digit code. Still... | 01/01/2008 |
| 7308199 | Optical CDMA transmitting apparatus and method for transmitting bipolar data Provided is an optical Code Division Multiple Access (CDMA) transmitting apparatus and method for transmitting bipolar data in an optical CDMA system. The optical CDMA transmitting apparatus and method of the present research has a simple structure, including only o... | 12/11/2007 |
| 7286762 | Apparatus with spread-pulse modulation and nonlinear time domain equalization for fiber optic communication channels A transmitter and transceiver for an optical communication channel may include a data encoder, a partial response (PR) precoder, a pulse filter, and an electrical-to-optical converter to transmit a spread pulse signal over an optical communication channel. The data ... | 10/23/2007 |
| 7283753 | System and method for WDM communication with interleaving of optical signals for efficient wavelength utilization In a system and method of optical communication, optical signals are generated in multiple wavelength channels. Each optical signal is passively transported from an origination node of a network to a destination node. The destination node is determined by the signal... | 10/16/2007 |
| 7277188 | Systems and methods for implementing an interaction between a laser shaped as a line beam and a film deposited on a substrate Systems and methods are disclosed for focusing a beam for an interaction with a film deposited on a substrate wherein the focused beam defines a short axis and a long axis. In one aspect, the system may include a detecting system to analyze light reflected from the ... | 10/02/2007 |
| 7272319 | System and method for secure multiple wavelength communication on optical fibers A method of optical communication having improved security is described. The data content of an initially provided data signal is apportioned among two or more distinct optical wavelength channels. A transmitted signal spans these two or more channels. A respective ... | 09/18/2007 |
| 7272318 | Passive optical network employing multi-carrier code division multiple access A passive optical network (PON) for providing a large amount of data at high speed to subscribers is provided. In particular, a PON employing a multi-carrier CDMA in which a CDMA method is applied for an upstream signal is provided. The PON employing a multi-carrier... | 09/18/2007 |
| 7239770 | Optical device An optical device enabling reducing device scale is constituted by M circulators (11a, 11b), (M being a natural number), a waveguide-type diffraction grating (12) including M first input/output waveguides (121a, 12... | 07/03/2007 |
| 7236702 | Method and system for duobinary coding of optical signals A method and system for duobinary coding of optical signals, wherein a precoded duobinary signal is supplied to a phase modulator which converts it to a phase-modulated optical signal, an optical filter carries out the function of the coder and converts the phase-mo... | 06/26/2007 |
| 7209739 | Method and system for processing calls within a local micro network A method and system for processing calls in a telecommunications system using fiber extender loops providing a local micro network. Calls originating from subscribers within the local micro network to subscribers that are also provided service within the local micro... | 04/24/2007 |
