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| Number | Title | Issue Date |
| 7636523 | Communication link for communicating data A communication link for communicating data between a first opto-electronic equipment capable of providing an optical signal and a second opto-electronic equipment capable of receiving the optical signal is described. The communication link includes a first optical ... | 12/22/2009 |
| 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 |
| 7415212 | Data communication system, data transmitter and data receiver A transmitter formed of two or more light-emitting sections such as LEDs, which are physically arranged in a predetermined manner, is disposed in the real world object, and each light-emitting section transmits data by flashing at a flashing pattern representing the... | 08/19/2008 |
| 7412116 | Optical device for simultaneously generating and processing optical codes The invention relates to an optical device, apt to generate and process optical codes at least one wavelength, comprising P inputs s, with 1≦s≦P, and P≧1, and N outputs k, with 1≦k≦N and N≧1, characterized in that it is apt to simultaneously generate and... | 08/12/2008 |
| 7400829 | Transmission apparatus and path selection method of a transmission apparatus A transmission apparatus that receives an optical signal by selecting any one of a plurality of provided optical signal transmission paths through protection control is configured to include a plurality of optical signal outputting sections that output the optical s... | 07/15/2008 |
| 7382784 | Apparatus and method for switching broadcast channel using VCC information An optical transmission network is disclosed that classifies digital broadcast channel data according to virtual channel connection (VCC) before transmission. In the optical transmission network, an optical signal receiver converts an optical signal from an optical ... | 06/03/2008 |
| 7330662 | System and method for remote optical digital networking of computing devices The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant ... | 02/12/2008 |
| 7319820 | Method of manufacturing optical communication system A position of a first module (12a) with respect to an optical fiber (11) is determined in accordance with a receiving efficiency at the first module (12a) with respect to light emitted from the optical fiber (11). Power of l... | 01/15/2008 |
| 7301871 | Method and device for detecting the signal on a disc having a defect by utilizing an RF signal and its derivatives The device includes a servo control unit, a data path control unit, a defect detection unit, and a logic combination unit. The data path control unit further includes a preamplifier receiving data from a lens and generating RF signals for data process. The defect de... | 11/27/2007 |
| 7286768 | Device for optical signal transmission An optical transfer device for transferring optical signals from a moveable part to a stationary part through an optical transfer medium in order to minimize distortions of the optical signal and increase the effective bandwidth of the signal transit path by minimiz... | 10/23/2007 |
| 7272316 | Wavelength-division-multiplexed optical source and passive optical network system employing the same A WDM optical source, in adopting a spectrum-sliced method, advantageously needs neither an optical source with specific generation wavelength nor a wavelength-stabilizing circuit for stabilizing wavelength. Affording high power and a very narrow line width, the WDM... | 09/18/2007 |
| 7272293 | Device having a casing and /or interior acting as a communication bus between electronic components A device including: at least two electronic/electrical components; and a casing, the casing having at least a portion thereof acting as a communication bus for connecting the at least two electronic/electrical components. ... | 09/18/2007 |
| 7209660 | Optical communications using heterodyne detection An optical communications system includes a receiver subsystem with at least two heterodyne receivers. The receiver subsystem receives a composite optical signal having two or more subbands of information and corresponding tones. An optical splitter splits the compo... | 04/24/2007 |
| 7206511 | Optical communications system A passive optical network employs wavelength-dependent routing, and terminals that transmit request packets (requesting a data transmission slot) in a common signalling time slot. Different delays are then applied to packets on different wavelength channels, allowin... | 04/17/2007 |
| 7158726 | Backbone interface, a terminal interface for communications in a space vehicle, and a communications network comprising such interfaces The invention relates to a communications backbone interface between at least three members of a communications network for a space vehicle. In the invention, the interface combines various signals received at inlets, which signals may be analog, digital, and optica... | 01/02/2007 |
| 7155127 | Optical communication system, optical communication unit, and optical transceiving package Cost-reduction in an optical communication unit is achieved by using spectrum-sliced modulated broadband light for transmitting upstream signals, instead of using laser light. An optical communication system includes at least one pair of optical communication units ... | 12/26/2006 |
| 7106973 | Apparatus and method for use in free-space optical communication comprising optically aligned components integrated on circuit boards The present invention provides an apparatus and method for free-space optical communication. The apparatus includes a first board with a plurality of optoelectronic converter components mounted on the first board. The apparatus additionally includes at least one opt... | 09/12/2006 |
| 7050719 | Wavelength division multiplexing receiver for wavelength tracking The WDM receiver includes a wavelength demultiplexer, a detector array and a signal extractor. The wavelength demultiplexer receives an n-channel optical input signal and transmits the n-channel optical input signal to m optical outputs. Each of the optical outputs ... | 05/23/2006 |
| 7046168 | Inter-vehicle communication method and device An inter-vehicle communication method according to the present invention performs communication by sequentially relaying transmission information among vehicles. For broadcasting the transmission information to peripheral vehicles, a vehicle transmitting the transmi... | 05/16/2006 |
| 7016564 | Apparatus for switching optical signals An apparatus for switching optical signals, comprising a first group of port cards adapted to receive input optical signals to be switched by the apparatus and a second group of port cards adapted to provide switched optical signals to an entity external to the appa... | 03/21/2006 |
| 6983110 | Component characteristic tolerant and component alignment tolerant optical receiver The optical receiver comprises an optical input path, a light detector array, an optical converging element and an information signal generator. The light detector array includes light detectors and a light-sensitive surface. Each light detector generates an electri... | 01/03/2006 |
| 6970653 | Fiberoptic system for communicating between a central office and a downstream station A fiber optic system for communicating between a central office and a downstream station is described. The central office has a TX unit, an RX unit and a continuous wave (“CW”) laser. Each station has an RX unit and a tunable filter coupling the RX unit to the c... | 11/29/2005 |
| 6954559 | Re-generator of optical clock signal A re-generator of an optical clock signal has at least a mode-locked semiconductor laser outputting a re-generated optical clock signal from at least one end face of the mode-locked semiconductor laser, with inputted light signals having different polarized wave sta... | 10/11/2005 |
| 6868232 | Fast protection switching by snooping on upstream signals in an optical network An optical network has an optical splitter connected to (1) a working optical subscriber unit (OSU) of a working circuit via a working optical fiber, (2) a protection OSU of a protection circuit via a protection optical fiber, and (3) one or more optical network ter... | 03/15/2005 |
| 6650843 | Device for the optical transmission of signals Devices for providing optical signal transmissions between a transmitter unit and a receiving unit which is mobile relative to the transmitter unit. The units are optically coupled to each other via an optical transfer medium, and thus improve transmissio... | 11/18/2003 |
| 6570693 | Reverse path optical combining using an optical commutator An optical commutator (310) for combining optical signals emanating from a plurality of optical transmitters (305a-n). The commutator (310) includes a plurality of input ports connected to each optical transmitter (305a-n) via an optical fiber (315a-n). T... | 05/27/2003 |
| 6437893 | System and method for transmitting messages, in particular for updating data recorded in electronic labels A message transmission system comprises a transmitter and receivers, the transmitter comprising a generator for generating a digital data signal representing a message, and an encoder for encoding the digital data in a serial code having a first and secon... | 08/20/2002 |
| 6400452 | Three dimensional laser control and tracking system A three dimensional laser tracking and control system is disclosed. The system includes a laser beacon generating a three dimensional rotating and scanning laser beam that covers a three-dimensional area. Each mobile unit has identification number (ID) an... | 06/04/2002 |
| 5838471 | Infrared echo canceling An infrared data communications system employs echo cancellation to remove echo signals of infrared transmissions received by an infrared receiver transducer. A version of the data pulse signal to be transmitted is subtractively combined with the received... | 11/17/1998 |
| 5793506 | Optical transmission system for cable television signals and video and telecommunications signals Optical transmission systems in which interactive services, such as video-on-demand, are to be provided must be low in cost if the services are to find acceptance. This requires, among other things, that as little change to the structure of existing optic... | 08/11/1998 |
| 5793507 | Discretely chirped multiple wavelength optical source for use in a passive optical network telecommunications system In a fiber optic communication system, a multifrequency light source generates a signal having a plurality of discrete and temporally spaced wavelengths. The wavelengths can be modulated with data for transmission in an optic medium. The multifrequency li... | 08/11/1998 |
| 5751455 | Optical transmission system and optical network terminals used therein An optical transmission system of an N : 1 or an N:N type is provided, in which there is no deterioration caused by beat noise between signals. A plurality of optical modulators are cascaded in an optical fiber transmission path having a light source and ... | 05/12/1998 |
| 5146521 | Optical fibre communication network An optical fibre communication network comprising one optical source (1) connected to one end of an optical fibre (3), and several optical receivers (9) for detecting light scattered to the side of the optical fibre (3), the network being characterized by... | 09/08/1992 |
| 5040168 | Single wire, infrared, randomly reflected, vehicular multiplexing system A vehicular, infrared, multiplexing system controlling various vehicular or automotive electrical function loads, such as, for example, lights, window motors, seat motors, door locks, engine start and the like, wherein control and sensing signals are tran... | 08/13/1991 |
| 5020155 | Audio commentary system Orator units are associated with particular exhibit or guiding locations and provide an audio commentary by the medium of ON and OFF states of electromagnetic radiation. Auditor units are portable units associated with paritcular viewers or users and are ... | 05/28/1991 |
| 4946244 | Fiber optic distribution system and method of using same A method and apparatus are disclosed for providing a fiber optic distribution network between a central office and a group of users generally in a localized area. The apparatus utilizes a continuous optical fiber primary loop in communication with the cen... | 08/07/1990 |
| 4910726 | Optical fibre communication networks with local optical power feeding A multi-channel wideband monomode optical fibre network having at least one transmitting station and a plurality of receiving terminals connected to the transmitting station by monomode optical fibres. One or more sources of temporally coherent optical po... | 03/20/1990 |
| 4871235 | Optical system including etalon for optically processing electromagnetic radiation at a repetition rate greater than about 1.25×104 Hz An optical system is disclosed which includes at least a first source of electromagnetic radiation (signal beam radiation), a device for processing the signal beam radiation, and a detector for detecting the processed signal beam radiation. The processing... | 10/03/1989 |
| 4871225 | Fiber optic distribution network A method and apparatus are disclosed for providing a fiber optic distribution network between a central office and a group of users generally in a localized area, a continuous optical fiber primary loop in communication with the central office passing in ... | 10/03/1989 |
| 4282605 | Sound reproducing with remote amplifying transducer A vehicle sound system has a power amplifier integrated with a loudspeaker at each of four remote locations. An LED or diode laser transduces an electrical signal from a tuner or tape player at low level into a corresponding light signal that is transmitt... | 08/04/1981 |
