Optical communications inventions 03/08

20080069558 - Static pulsed bus circuit and method having dynamic power supply rail selection: A static pulse bus circuit and method having dynamic power supply rail selection reduces static and dynamic power consumption over that of static pulse bus designs with fixed power supply rail voltages. Every other (even) bus repeater is operated with a selectable power supply rail voltage that is selected in... Agent: Ibm Corporation (mh) C/o Mitch Harris, Attorney At Law, L.L.C.

20080069559 - Fiber misconnection detecting method and device: In a method and device which can quickly detect a fiber misconnection without setting an expected value, a node identifier of source node and an identifier of an interface for inputting/outputting a signal are set in a predetermined first field of a header to be transmitted to a destination node,... Agent: Katten Muchin Rosenman LLP

20080069560 - Monitoring wavelength and power in an optical communications signal: A first out-coupled light spot is produced on a first detector surface, from a first region of varying refractive index formed in an optical waveguide. A second out-coupled light spot is produced on a second detector surface different than the first, from a second region of varying refractive index formed... Agent: Intel/blakely

20080069562 - Robust ranging method: In a communication system in which data is transferred by packets, a ranging method in which a receiver, in a given ranging window, periodically compares received data with expected data to find a match. The periodic comparison includes searching for known preamble and/or delimiter sequences of ranging packets and involves... Agent: Dr. Mark M. Friedman C/o Bill Polkinghorn - Discovery Dispatch

20080069563 - Protection method for ring network of optical transmission network: A ring network protection method for the optical transmission network relates to the digital information transmission and includes using the overhead byte APS/PCC in the ODUk to transmit the protection information of the APS. This method adds fields in the APS/PCC and further includes: a. the network element in which... Agent: Mcandrews Held & Malloy, Ltd

20080069564 - Optical aggregation and proxy device: An optical aggregation device can couple a plurality of optical line terminals to a common plurality of optical network terminals. The device is coupled to the network terminals via a passive optical network. The aggregation device makes it possible to more fully use all of the available bandwidth of the... Agent: Welsh & Katz, Ltd

20080069565 - Differential m phase shift keying optical receiving circuit: The present invention is a differential M phase shift keying optical receiving circuit to improve an identification property of a signal from an optical front-end unit having a plurality of lines. For this, the differential M phase shift keying optical receiving circuit includes: a light-electricity converter for outputting a plurality... Agent: Bingham Mccutchen LLP

20080069566 - Wavelength superimposing device, manufacturing method therefor, and wdm network system: The present invention is a wavelength superimposing device that can restrain a system scale and further reduce an optical transmission loss, while broadcasting a video signal light in a WDM network system, a manufacturing method therefor, and the WDM network system, and comprises a filter device that reflects some light... Agent: Staas & Halsey LLP

20080069561 - Adaptive optical signal processing with multimode waveguides: Optical signals are passed in an optical medium using an approach that facilitates the mitigation of interference. According to an example embodiment, a filtering-type approach is used with an optical signal conveyed in an optical fiber, such as a multimode fiber (MMF) or a multimode waveguide. Adaptive spatial domain signal... Agent: Attn: Robert J. Crawford

20080069567 - System and method for regenerating infrared code signals: A system and method is provided for regenerating infrared code signals configured to control an automated device. The method can include the operation of receiving a plurality of infrared control signals from an input source. A format of the infrared control signals from the input source can then be identified.... Agent: Thorpe North & Western, LLP.

20080069568 - Interactive vehicular communication system, particular between cars and its method of use: An interactive vehicle communication system, particularly for communication between motor vehicles, comprises a communication device (2) which may be placed on a stationary support (3) or a vehicle (4) traveling on a roadway and a receiver device (5), which may be placed on a stationary support (3) or a vehicle... Agent: Themis Intellectual Property Counsel

20080069569 - Determination and adjustment of laser modulation current in an optical transmitter: Systems and methods for controlling the modulation current of a laser included as a component of an optical transmitter, such as an optical transceiver module, are disclosed. Control of the modulation current, which affects various laser operational parameters, including extinction ratio and optical modulation amplitude, enables operation of the laser... Agent: Workman Nydegger

20080069570 - Optical transceiver for 100 gigabit/second transmission: An optical transmitter for converting and coupling an information-containing electrical signal with an optical fiber having an electrical input for coupling with an external electrical cable or information system device having a plurality of parallel data lines, a modulator for converting between an information-containing electrical signal on each data line... Agent: Casey Toohey Emcore Corporation

20080069571 - Optical receiving apparatus: An optical receiving apparatus is provided with a receiver, a setting unit, and a storage unit. The receiver receives an optical signal modulated in a DPSK format and performs variable dispersion compensation and delay interference processing on the optical signal to demodulate the optical signal. The setting unit sets suitable... Agent: Staas & Halsey LLP

20080069572 - Optical transmission device: Occurrence of a reception error and breakdown of a device are prevented by absorbing an optical surge that occurs at the time of an instantaneous interruption of light. Dummy light having a wavelength at which a Raman gain is obtained when the wavelength of a main signal is assumed to... Agent: Staas & Halsey LLP

20080069573 - Flexible dispersion mapping: One method configures an all-optical network such that at least eighty percent of optical fiber spans of a portion of a first all-optical path of the network have substantially a first residual dispersion per span and at least eighty percent of optical fiber spans of a remainder of the first... Agent: Lucent Technologies Inc. Docket Administrator - Room 3j-219

20080069574 - Optical communication module and electronic equipment: An inventive optical communication module includes a substrate, a light receiving element disposed on one surface of the substrate for receiving light emitted from a transmission-side optical communication module, a block-shaped resin package which seals the one surface of the substrate and the light receiving element, and a lens disposed... Agent: Rabin & Berdo, PC

20080063394 - Fault protection system and method for passive optical network: A fault protection method for optical fiber networks is provided. The method includes monitoring intensity of downstream optical signals transmitted through a first route from a rear terminal of a primary optical channel, so as to determine if there occurs any fault; and activating a second route to transmit optical... Agent: Rosenberg, Klein & Lee

20080063395 - Driving multiple transceiver modules with a single serdes transceiver chip: The invention relates to a transceiver optical system in which a single serializer/deserializer (SERDES) chip is used to drive a plurality of transceiver modules.... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20080063396 - Optical subchannels from a single lightwave source: An apparatus includes a generator for obtaining at least two lightwave carriers from a single lightwave source, at least two modulators for selectively varying the lightwave carriers according to respective data signals; and a coupler for combining the modulated lightwave carriers for optical transmission. The generator can be one of... Agent: Nec Laboratories America, Inc.

20080063397 - System and method for providing wireless over a passive optical network (pon): A network system and method include a wireless base station integrated at a central office of a service provider. The wireless base station is configured to provide portable and fixed services to customers. A passive optical network is coupled to the wireless base station at the central office to provide... Agent: Nec Laboratories America, Inc.

20080063399 - Methods and apparatus to implement communication networks using electrically conductive and optical communication media: Example methods and apparatus to implement communication networks using electrically conductive and optical communication media are disclosed. An example method involves receiving first communication information via a conductive communication medium and second communication information via a first optical fiber communication medium. The first communication information and the second communication information... Agent: Hanley, Flight & Zimmerman, LLC

20080063398 - Fiber-to-the-seat (ftts) fiber distribution system: A modular, scalable, extensible, In-Flight Entertainment (IFE) data communication system is described. In one embodiment, the system comprises a hub providing connection between one or more server/switch line replaceable unit including at least one server and a plurality of passenger video display units. A server, such as, for example, an... Agent: Knobbe Martens Olson & Bear LLP

20080063400 - Method and device for controlling a remote vehicle: A system and method for controlling a remote vehicle comprises a hand-held controller including a laser generator for generating a laser beam. The hand-held controller is manipulable to aim and actuate the laser beam to designate a destination for the remote vehicle. The remote vehicle senses a reflection of the... Agent: O''brien Jones, PLLC (w/irobot Corp.)

20080063402 - Hybrid optical transceiver module and passive optical network including the same: Provided are a hybrid optical transceiver module having an optical amplifier packaged thereto for outputting a high-power optical signal to remove problems regarding narrow emission angle and optical alignment, and a passive optical network (PON) system having an improved optical network terminal (ONT) accommodation capability using the hybrid optical transceiver... Agent: Lowe Hauptman Ham & Berner, LLP

20080063403 - 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 signal, and adding a digital pilot tone thereto. A laser is driven in accordance with the summed digital signal to... Agent: Scientific-atlanta, Inc. Intellectual Property Department

20080063401 - Method, apparatus and system for high-speed transmission on fiber optic channel: Multi-carrier modulation fiber optic systems constructed using a series of electrical carriers, modulating the data on the electrical carriers and combining the carriers to form a wideband signal. The wideband signal can then be intensity modulated on a laser and coupled to a fiber optic channel. A receiver may then... Agent: Mcandrews Held & Malloy, Ltd

20080063404 - Transmitting device for free-space optical transmission: Transmitting device for free-space optical transmission. The invention relates to a transmitting device for transmission through space, using electromagnetic waves of the infrared and/or visible and/or ultraviolet bands produced by one or several discharge lamps. The device is connected by its input terminals (1) to an a.c. energy distribution system.... Agent: Howrey LLP

20080063405 - System and method for providing failure protection in optical networks: A system and method for transmitting an optical signal. The system includes a first optical transmitter capable of transmitting a first optical signal under one or more first operating conditions, and the first optical signal corresponds to a first wavelength. Additionally, the system includes a second optical transmitter capable of... Agent: Townsend And Townsend And Crew, LLP

20080063406 - Data transmission apparatus: Disclosed is a data transmission apparatus including: a measurement data obtaining section to obtain a measurement data signal from a measuring object; a data processing section to perform data processing of the measurement data signal; and a data transmitting section, intervened between the measurement data obtaining section and the data... Agent: Sughrue Mion, PLLC

20080063407 - Digital optical network architecture: A digital optical network (DON) is a new approach to low-cost, more compact optical transmitter modules and optical receiver modules for deployment in optical transport networks (OTNs). One important aspect of a digital optical network is the incorporation in these modules of transmitter photonic integrated circuit (TxPIC) chips and receiver... Agent: North Weber & Baugh LLP Carothers, W. Douglas

20080063408 - Diagnostic method and diagnostic chip for determining the bandwidth of optical fibers: For a simple determination of the bandwidths of optical fibers, the invention proposes a method that provides for the coupling of light with a first optical power and a first modulation frequency into an optical fiber, as well as measuring a first signal level as a function of the optical... Agent: Demont & Breyer, LLC

20080063409 - Polarization envelope modulation for signaling and labeling in optical networks: The present invention is directed to an in-passband signaling method. The method includes the steps of extracting a control component and a data component from an optical signal. The control component may be used to determine the state of an optical switch in either a packet-switched network or circuit-switched network.... Agent: Telcordia Technologies, Inc.

20080063410 - Optical transmitting apparatus and optical communication system: A light source control section 15 selects a first light emitting device arrangement (color combination device group) in which LEDs 19 make a particular visible light color by color synthesis and form one optical communication channel, and then causes the first light emitting device arrangement to emit light, and selects... Agent: Hogan & Hartson L.L.P.

20080063411 - Photonics-based multi-band wireless communication system: Systems for wireless communication may select a photonic signal to generate a carrier frequency for wireless communication. In an illustrative example, the selected photonic signal may have sidebands with a frequency difference corresponding to a carrier frequency within one of multiple predetermined carrier frequency bands. In some implementations, each of... Agent: Fish & Richardson P.C.

20080063412 - Optical transmitter to suppress abrupt increase of driving current for laser diode during unstable apc loop and a method to control the same: The present invention discloses an optical transmitter that provides a function to vary the rate of the increase of the bias and modulation currents and their practical values during the APC feedback loop is left unstable without prolonging this unstable period. The optical transmitter of the invention includes a controller... Agent: Smith, Gambrell & Russell

20080056710 - Dispersion compensating apparatus and dispersion compensation control method: A variable dispersion compensating unit compensates an optical signal, and changes the compensation amount according to a control signal that has a given frequency. After demodulation of the compensated optical signal, error conditions of the signal are monitored and an error signal is output. A band pass filter filters the... Agent: Staas & Halsey LLP

20080056711 - Disk transfer mechanism, and disk inspection apparatus and disk inspection method using the same: The present invention is provided with a first and second spindle at respective initial positions spaced apart by a predetermined distance and disposed linearly at both sides of inspection positions where the spindles are set for disk inspection, a disk inverting mechanism is provided at either the front side or... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080056712 - Optical transmission apparatus: In an optical transmission apparatus controlling an optical output portion by a working optical output controller and a protection optical output controller, the optical output controllers separately generate (inverted) preset value signals corresponding to a common output preset value provided from outside, and perform an analog addition of a common... Agent: Staas & Halsey LLP

20080056713 - Efficient use of trusted third parties for additional content-sharing security: Network elements are identified as being connected to optical nodes by instructing two network elements in a spectrum group of the CMTS to transmit at frequencies f1 and f2, respectively. Frequencies f1 and f2 are selected such that they produce intermodulation distortions (intermods) in the laser transmitter at f3 when... Agent: Motorola, Inc. Law Department

20080056716 - Electro-optical device and electronic apparatus: An electro-optical device includes a potential generating circuit that generates a first power supply potential and a second power supply potential that is different from the first power supply potential; a first signal processing circuit that selectively outputs one of a first high potential and a first low potential according... Agent: Oliff & Berridge, PLC

20080056715 - Optical transmission apparatus having oadm function: An optical transmission apparatus has a first wavelength selective switch (WSS) for route switching, provided with respect to each route, to selectively output signal light from a first input route to second through Nth output routes and to selectively output signal lights from second through Nth input routes to a... Agent: Bingham Mccutchen LLP

20080056719 - Method and apparatus for enabling an optical network terminal in a passive optical network: A method and corresponding apparatus for automatically enabling and disabling an Optical Network Terminal (ONT) to communicate upstream with a network device, such as an Optical Line Terminal (OLT), is provided. The ONT includes at least one timing mechanism to time a duration of the ONT's being in an enabled... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20080056720 - Method and system for power management control in passive optical networks: An optical line terminal (OLT) performs power management control in a passive optical network (PON) by acquiring a respective reception level for each optical network unit (ONU) in the PON and maintaining a reception table that stores the respective reception level for each ONU. Prior to receiving a burst signal... Agent: The Nath Law Group

20080056714 - Method and apparatus for obtaining an optical power level in a pon network: A method and apparatus for remotely obtaining an optical power level in a PON network is provided. An Element Management System (EMS) transmits a Simple Network Management Protocol (SNMP) request message to retrieve an optical power level from an Optical Network Unit (ONU). After receiving the SNMP request message, an... Agent: Siemens Corporation Intellectual Property Department

20080056717 - Wavelength selection: A method of selecting a wavelength for use in transmitting optical data along a path in an optical network is disclosed. Previously known methods for selecting wavelengths do not consider how a wavelength selection decision will affect future connection attempts along paths that have one or more links in common... Agent: Nixon & Vanderhye, PC

20080056718 - 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 with the interconnect hub at the center of the ring. The audio connection devices are connected to each... Agent: O'keefe, Egan, Peterman & Enders LLP

20080056721 - Multiple bit rate optical communication method, optical network unit and optical line terminal: The present invention is a method of transmitting data of different bit rates in a simple manner and, if positive minimal multiples whose multiple operation values on the bit time lengths 1/Ai for a plurality of communication bit rates Ai become common are minimal multiples ai respectively, an optical line... Agent: Staas & Halsey LLP

20080056722 - Binding methods and devices in a building automation system: An automation component configured for wireless communication within a building automation system is disclosed. The automation component includes a communication module having a communication port, and a wireless communication component. The automation component further includes a processor in communication with the communication module, a memory in communication with the processor,... Agent: Siemens Corporation Intellectual Property Department

20080056723 - Multiple access free space laser communication method and apparatus: An optical system may be configured as a receiving or as a transmitting system. As a receiving system, it is configured to receive at least one incident laser beam and project the beam into a spot on an array of actuable elements. The position of the spot is determined by... Agent: Lucent Technologies Inc. Docket Administrator - Room 3j-219

20080056724 - Sound sources separation and monitoring using directional coherent electromagnetic waves: An apparatus and a method that achieve physical separation of sound sources by pointing directly a beam of coherent electromagnetic waves (i.e. laser). Analyzing the physical properties of a beam reflected from the vibrations generating sound source enable the reconstruction of the sound signal generated by the sound source, eliminating... Agent: Fleit Kain Gibbons Gutman Bongini & Bianco

20080056726 - Dispersion compensation apparatus and dispersion compensation method: A dispersion compensation apparatus includes a dispersion compensation unit that conducts dispersion compensation on an optical signal sent from a transmitting device through a transmission path. The dispersion compensation unit includes a switch that switches a path of the optical signal between a first path and a second path, and... Agent: Bingham Mccutchen LLP

20080056725 - Method and system for optical transmission signal level configuration: The invention relates to an optical transmission system comprising transmitter and receiver devices and comprising automatic optical signal level configuration means which provide the same fixed output signal level for a received signal level range, and the system comprising at least one automatic self-level unit in the transmitter device and... Agent: Sughrue Mion, PLLC

20080056727 - Optical transmitter and drive method of same: An optical transmitter for performing optical phase modulation according to a data signal and further applying optical intensity modulation in synchronization with clock signals and transmitting the optical signals, wherein in order to maintain the phase difference between the data signal and the clock signal constant with a simple configuration,... Agent: Staas & Halsey LLP

20080056728 - Optical transmitter, operation controlling method for the same, and recording medium: An optical transmitter according to an exemplary aspect of the present invention is an optical transmitter that includes a variable-wavelength light source and a modulator for modulating and outputting the output light of the variable-wavelength light source in accordance with data to be transmitted, wherein the optical transmitter includes a... Agent: Sughrue Mion, PLLC

20080056729 - Reducing depolarisation: The present invention provides a method for reducing spreading of a pulse in a transmission line, said spreading being as a result of polarization mode dispersion, comprising inducing predetermined polarization rotations of particle or wave components of the pulse in the transmission line.... Agent: Sughrue Mion, PLLC

20080056730 - Modulator, optical transmitter and optical transmission apparatus: An object of this invention is to provide a modulator, an optical transmitter and an optical transfer device which can modulate a channel signal while suppressing residual AM signals regardless of the frequency of a channel signal and suppressing deterioration of the channel signal due to impossibility of giving a... Agent: Pearne & Gordon LLP

20080056731 - Circuit for detecting optical failures in a passive optical network: A circuit for detecting optical failures in a passive optical network (PON) wherein digital burst data transmitted by an optical transmitter is monitored by a photodiode, includes a power determination unit coupled to the photodiode for providing measurements of an output optical power of a high logic level and a... Agent: Nath & Associates, PLLC

20080056732 - Receiving circuit and optical signal receiving circuit: A receiving circuit comprises a transimpedance amplifier 3 including an inversion amplifier 2 for amplifying an input current IN, and a feedback resistance R1 connected between an input and an output of the inversion amplifier 2, a comparison circuit 4 for comparing an output OUT of the transimpedance amplifier 3... Agent: Mcdermott Will & Emery LLP

20080056733 - Phase monitor used in optical receiver: Branches are grouped into a group 1 including first and second branches, and a group 2 including third and fourth branches. The signal after being passed through a dual pin photodiode in one branch included in the group 1 and being at the earlier stage of a CDR circuit is... Agent: Bingham Mccutchen LLP

20080056734 - Radio frequency transmitter with on-chip photodiode array: A radio transmitter integrated circuit includes a photodiode array circuit, a digital conversion module, a transmit baseband processing module, an analog conversion module, an up-conversion module, and a power amplifier circuit. The photodiode array circuit is coupled to convert received light into electrical image signals. The digital conversion module is... Agent: Garlick Harrison & Markison