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Multiplex

Multiplex patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

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Optical Communications


Multiplex



Fiber-optic communication apparatus capable of operating in a normal mode and a power calibration mode, and communication device used within the same
12/11/14 - 20140363158 - A fiber-optic communication apparatus includes first and second communication devices interconnected by an optical fiber cable. The first communication device converts one of a calibration signal with a predetermined power level and a radio frequency (RF) signal into an optical signal. The second communication device converts the optical signal, which...

Digital generation of multi-carrier optical signals
12/11/14 - 20140363159 - A transmitter of optical signals uses a single light transmitter to modulate a multi-carrier signal. The multi-carrier signal is generated by performing digital signal processing in the digital domain to generate a plurality of components by performing Hilbert transform filtering. The components are modulated on to an optical transmitter as...

Communication apparatus and communication method using the same
10/02/14 - 20140294382 - A communication apparatus includes a first communication unit configured to transmit and receive data using wireless LAN communication and a second communication unit configured to receive data using wireless communication that is different from the wireless LAN communication. The communication apparatus provides data, received through the first communication unit and...

Low latency multiplexing for optical transport networks
08/14/14 - 20140226980 - Techniques for multiplexing and demultiplexing signals for optical transport networks are presented. A network component comprises a multiplexer component that multiplexes a plurality of signals having a first signal format to produce a multiplexed signal in accordance with a second signal format, while maintaining error correction code (ECC) of such...

Systems and methods for implementing optical and rf communication between rotating and stationary components of a rotary sensor system
07/10/14 - 20140193149 - Systems and methods are disclosed for implementing a rotary sensor system including rotating system components in RF signal and optical signal communication with stationary system components through a rotary coupler. The rotary coupler may be provided with an optical transmission line that passes inside or through the center of an...

Nonlinearity compensation using pilot tones
06/26/14 - 20140178065 - An optical system may have an optical transmitter including a digital signal processor to receive a signal channel, add data corresponding to a pilot tone, generate a digital signal associated with the signal channel and including the pilot tone, and output the digital signal. The optical system may further have...

Quality of service application for different data flow types
06/19/14 - 20140169788 - A network device is configured to store parameters identifying a respective quality of service (QoS) to apply to corresponding different types of data flows; initiate establishment of a network channel between a source device and a destination device through an optical network; receive first and second data flows destined for...

Optical compensation using a space division multiplexing electro-optic receiver
05/08/14 - 20140126902 - Disclosed herein are methods, structures, and devices for optical communications systems operating through turbulent media. More specifically, a spatial division multiplexing photonic integrated circuit is used in conjunction with digital signal processing systems to mitigate the effects of the turbulent media....

Method and apparatus for aligning and integrating serial data streams
04/10/14 - 20140099106 - An integrated circuit is incorporated into a communications system to enable a channel to achieve data rates that are at least double that which are currently achievable. The integrated circuit combines serial data signals using recovered clock and serial data signals in reference and non-reference clock domains. The integrated circuit...

Method and system for data transmission and communication using imperceptible differences in visible light
04/10/14 - 20140099107 - An exemplary system for communicating data includes a light source that emits light and a processing device that receives and encodes data into a communication signal. A modulator modulates light emitted by the light source, wherein the modulation is imperceptible to the human eye, and the modulated light includes the...

Multiphase sampling of modulated light with phase synchronization field
04/03/14 - 20140093238 - A light transmitter transmits multiple light packets, each formatted to include a predetermined phase synchronization field (PSF) and a same message comprising a series of bits. The PSF and each bit are each represented as light that is intensity modulated over a bit period at a corresponding frequency. The light...

Spatial multiplexing for optical transmission
01/30/14 - 20140029941 - A system includes an optical Y-junction coupler to receive a first modulated optical signal on a wide input path of the optical Y-junction coupler and to receive a second modulated optical signal on a narrow input path of the optical Y-junction coupler, wherein the optical Y-junction coupler generates a combined...

Systems and methods for networking consumer devices
01/23/14 - 20140023363 - Systems and methods for enrolling nodes into an ad hoc network associated with a multi-roomed structure. Nodes within the ad hoc network comprise a communication module configured to communicate with the ad hoc network using at least one of room-limited communications and room-transparent communications....

Variable-length training fields in coaxial communications
12/26/13 - 20130343754 - A coaxial physical layer device operates in at least two different modes: a discovery mode and a normal mode. In the discovery mode, a first orthogonal frequency-division multiplexing (OFDM) coaxial signal is received that has a preamble including a plurality of first training fields and at least one second training...

High-speed optical fiber link and a method for communicating optical data signals
10/31/13 - 20130287394 - An optical communications system and method at least doubles the data rate of the optical fiber link without requiring a redesign of the backplane ASIC. This is made possible in part through the incorporation of at least one gearbox integrated circuit (IC) is incorporated into the system that is compatible...

Optical burst receiver with a configurable ac and dc coupling interface
10/31/13 - 20130287395 - A method for enabling AC coupling or DC coupling when receiving burst data signals comprises generating a hold-over pattern, wherein the hold-over pattern is a AC balanced pattern when an AC coupling is required and a low-logic value signal when a DC coupling is required; inputting the generated hold-over pattern...

Adaptive bit or power loading in optical orthogonal frequency division multiplexing transceivers
10/17/13 - 20130272698 - The present invention discloses a method for real time optical orthogonal frequency division multiplexing (OOFDM) transceivers by adaptively utilising available channel spectral characteristics....

Apparatus and method for transmitting and receiving visible light communication
10/10/13 - 20130266314 - A visible light communication (VLC) transmitting apparatus modulates source data to an orthogonal frequency division multiplexing (OFDM) symbol according to an OFDM modulation method, inserts a diffusion code that is allocated to the VLC transmitting apparatus into a frequency axis of the OFDM symbol, converts the OFDM symbol in which...

Coherent optical receiver device and coherent optical receiving method
09/12/13 - 20130236172 - In a coherent optical receiver device, the dynamic range considerably decreases in the case of selectively receiving the optical multiplexed signals by means of the wavelength of the local oscillator light, therefore, a coherent optical receiver device according to an exemplary aspect of the invention includes a coherent optical receiver...

Communications interface apparatus and method of operating the same
09/05/13 - 20130230318 - There are provided a communications interface apparatus and a method of operating the same. The communications interface apparatus includes: a transmission line including a conductor line and a plastic optical fiber for optical communications; a signal transmitting unit transmitting a first data signal through the plastic optical fiber and transmitting...

System and method including modified bit-interleaved coded modulation
08/22/13 - 20130216221 - A system and method with a modified bit-interleaved coded modulation with iterative decoding (BICM-ID). Coded and interleaved bits are combined and coded with a second FEC code that is then mapped to a modulation format. The second FEC code may be a single parity check (SPC) and the scheme may...

Method and device for receiving multi-carrier optical signal
08/15/13 - 20130209098 - The present invention relates to a method and a device. The method includes: mixing a multi-carrier optical signal with a local optical signal having the same center frequency as that of the multi-carrier optical signal; performing photoelectric conversion and analog-to-digital conversion on an optical signal obtained through the mixing to...

Optical transmission system
07/18/13 - 20130183033 - The present invention relates to an optical transmission system to which a spatial multiplexing optical fiber is applied as a transmission line. The optical transmission system performs optical transmission using the spatial multiplexing optical fiber as an optical transmission line for transmission of signal light. Namely, the optical transmission is...

Multi-channel optical module
05/02/13 - 20130108262 - Multi-channel optical modules are provided. The multi-channel optical module may include a plurality of optical devices receiving or transmitting optical signals, a housing for optically coupling the plurality of optical devices to an optical fiber, at least one optical filter separating or multiplexing the optical signals according to wavelengths of...

Demand accommodation designing system and method
04/25/13 - 20130101286 - A demand accommodation design system for accommodating a demand specifying a signal transmission route from a start-point node to an end-point node within an optical network includes an analytical unit to acquire at least one optical path candidate for minimizing cost of the optical network by solving an objective function...

Multimode base station and method of operation
03/28/13 - 20130077966 - A base station includes multiple transmitter-receiver elements coupled to multiple antennas. The activation of additional baseband signal processing resources, dynamically mapped via a programmable digital interface module to a subset of the original transmitter-receiver sets in the base station to double capacity of the system or facilitate simultaneous operation of...

Optical transmission system and multi-core optical fiber
03/14/13 - 20130064543 - An optical transmission system includes an optical transmitting unit that outputs at least one optical signal having a wavelength included in an operation wavelength band and a holey fiber that is connected to the optical transmitting unit. The holey fiber includes a core and a cladding formed around the core....

Method and apparatus for processing optical signals
03/07/13 - 20130058649 - A method for processing optical signals includes performing frequency mixing, photoelectric detection, analog/digital conversion, and dispersion compensation on received input optical signals. First-path polarization multiplexing optical signals and second-path polarization multiplexing optical signals. An initialization update process is performed on filter coefficients. Polarization compensation is performed on the first-path polarization...

Method for energy efficient reoptimization of optical networks
02/28/13 - 20130051797 - In optical networks new links are added between nodes over time to satisfy the increasing traffic demands of the network. Existing links are normally not changed, resulting in a network that does not have the lowest energy consumption. A method provides a way to reduce the energy consumption of the...

Method of transferring data in a projectile launching device
02/14/13 - 20130039655 - A method of transferring data in a projectile launching device includes providing a projectile launching device that has a transmitter and a receiver. An external device also includes its own transmitter and receiver. The receivers are in range with the transmitters. Data is sent from the transmitter on the projectile...

Optical communication device
01/10/13 - 20130011134 - An optical communication device includes a transmitter module and a receiver module. The transmitter module includes a two laser sources, two optical modulators optically coupled to the two light sources, respectively, and an optical coupler, a semiconductor optical amplifier, an optical coupler, four optical band-pass filters or a demultiplexer, and...

Communication device, communication system and communication method
01/10/13 - 20130011135 - A communication device includes an addition unit which outputs a result of adding a predetermined number to the number of data blocks of a first signal, a comparison unit which, on the basis of comparison of the addition result with the number of data blocks of a second signal outputs...

Optical frame attached with alignment features microfabrictated in die
01/03/13 - 20130004167 - A photonic device assembly including a photonic device fabricated on a chip substrate, the chip substrate having a physical alignment feature fabricated therein, and a frame to couple an external optical lens or interconnect to the photonic device. The frame has a frame facet abutted to a complementary facet of...

Client signal accommodating multiplexing apparatus and method
01/03/13 - 20130004168 - In an apparatus for accommodating and multiplexing asynchronous client signals in which an idle signal is defined, the transmission side transmits client signals after synchronizing the client signals by inserting or removing, with reference to a specific client signal, an idle signal to/from the same type of another client signal,...

Method for aggregating multiple client signals into a generic framing procedure (gfp) path
12/27/12 - 20120328288 - Used bandwidth counts for each of multiple client streams are maintained. A used bandwidth count for a client stream is increased when data from the client stream is put in a Generic Framing Procedure (GFP) frame onto the GFP path and is decreased once every time period by allocated bandwidth...

Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices
12/13/12 - 20120315036 - Methods and systems for encoding multi-level pulse amplitude modulated signals using integrated optoelectronics are disclosed and may include generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by two or more electrical input signals. The optical modulator may include optical modulator elements coupled in series and configured into...

Method and system for data synchronization in passive optical networks
11/22/12 - 20120294609 - A system and method for data synchronization in Passive Optical Networks are disclosed. According to an embodiment, the present invention provides a method for providing upstream data synchronization in an optical communication network. The method includes sending data from an Optical Network Unit. The data includes a first data frame,...

Remote electronic component, such as remote radio head, for a wireless communication system, remote electronic component array and external distributor unit
10/25/12 - 20120269509 - The present invention relates to a remote electronic component, such as a remote radio head, for a wireless communication system, to a remote electronic component array and to an external distributor unit. The electronic component includes at least one optical input connector for connecting the remote electronic component with a...

Transmitter and receiver for transceiving optical signals
09/13/12 - 20120230685 - A transmitter for transmitting an optical signal based on a baseband signal, including an up-transformer for up-transforming the baseband signal to obtain a bandpass signal and a converter for converting the bandpass signal into a signal having a DC-offset. The transmitter further includes a modulator for modulating a light source...

Synchronization process in optical frequency division multiplexing transmission systems
09/13/12 - 20120230686 - The present invention discloses a synchronisation method suitable for increasing the receiving speed in the receiving part of an orthogonal optical frequency division multiplexing (OOFDM) transceiver....

Optical converter with adc based channelizer for optical lnb system
08/23/12 - 20120213514 - Systems and methods in accordance with embodiments of the invention convert satellite signals to an intermediate frequency signal and selecting modulated digital data within the satellite signals for content decoding. One embodiment includes an optical low noise block converter (LNB) including a digital channelizer switch configured to select at least...

Optical transport multiplexing client traffic onto parallel line system paths
07/26/12 - 20120189303 - An optical line card system includes one or more input interfaces for receiving information, a line interface comprising a plurality of line transponders, and a multiplexer for multiplexing output of the one or more input interfaces onto the plurality of line transponders. The one or more input interfaces have an...

Method, apparatus, and system for assigning tributary port number
07/26/12 - 20120189304 - Embodiments of the present invention relate a method, an apparatus, and a system for assigning a tributary port number. The method includes: receiving a service path request message which is sent by a neighboring node and carries a service type; determining, according to the service path request message, an OTU...

Source-multiplexed pulse amplitude modulation (pam) optical data communication system and method
07/19/12 - 20120183290 - An optical signal representing digital data is produced by an opto-electronic semiconductor device having a group of three or more opto-electronic light sources that emit optical signals in accordance with a pulse amplitude modulation (PAM) scheme. The optical signal can be transmitted through an optical fiber coupled to an assembly...

Optical signal transmitter, and bias voltage control method
06/21/12 - 20120155865 - An optical signal transmitter of the present invention includes: two phase modulating portions; a phase shifter which displaces carrier phases of two output lights from the phase modulating portions by π/2; a multiplexing portion which multiplexes two signal lights, carrier phases of the two signal lights being made orthogonal to...

Adapting apparatus and method
06/07/12 - 20120141123 - The present invention discloses an adapting apparatus and method, the apparatus comprises: an adapter pool, wherein the adapter pool is located between an optical data unit (ODUk) layer and an optical channel (OCh) layer, and the adapter pool comprises one or more adapters which are respectively connected to an OCh...

Transmitting device and transmitting/receiving device
05/31/12 - 20120134670 - A transmitting device includes a first optical transmitting medium, a second optical transmitting medium, and an optical multiplexing portion. The first optical transmitting medium outputs a first optical signal having a predetermined signal cycle. The second optical transmitting medium outputs a second optical signal obtained by delaying the first optical...

Continuously towed seafloor electomagnetic prospecting system
05/31/12 - 20120134671 - A towed system for underwater electromagnetic prospecting for use with a seaward vessel is provided. The towed system comprises a first portion, a second portion, and a tow cable. The first portion is located on the vessel and includes a controller and a power supply system. The second towed portion...

Systems and methods for extending a deterministic fieldbus network over a wide area
04/12/12 - 20120087656 - The present disclosure provides systems and methods for extending a deterministic network over a wide geographical area. According to one embodiment, an IED may transmit data frames using a deterministic frame-based communication protocol, such as EtherCAT, via a local deterministic fieldbus. A first transceiver may encapsulate the data frames for...

Optical usb thin card
03/08/12 - 20120057867 - Exemplary embodiments of optical USB thin card is disclosed, which includes a substrate, having a space formed inside its packaging layer; a seat, disposed at a position on the substrate while forming an opening on the substrate; a plurality of first contact elements, each being disposed on the seat to...

Optical network system, optical multiplexing apparatus, and receiving apparatus
03/01/12 - 20120051743 - In an optical network system a carrier light propagates along a transmission line. A control light generator included in an optical multiplexing apparatus generates a control light obtained by modulating an intensity-modulated light by a data signal. A multiplexer combines the control light with the carrier light for modulating the...

Optical transmission system and optical repeater
03/01/12 - 20120051744 - An optical repeater connected to an optical transmission line between an optical network unit having an optical network unit (ONU) function on the side of a subscriber and an optical line termination (OLT) on the side of a center includes first electrical/optical conversion means connected to a first optical transmission...

Method for data transmission using a linc amplifier, a linc amplifier, a transmitting device, a receiving device, and a communication network therefor
02/16/12 - 20120039603 - The invention concerns a method for transmission of a data signal from a transmitting device (BS) to a receiving device (RAH1) using a LINC amplifier (LINC1, LINC2) for signal amplification, wherein the data signal is represented by two phase modulated signal components of constant amplitude in a first part of...

Method and device for sending upstream transfer frame in passive optical network
02/02/12 - 20120027407 - The present disclosure relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes:...

Method for data transmission using an envelope elimination and restoration amplifier, an envelope elimination and restoration amplifier, a transmitting device, a receiving device, and a communication network therefor
01/19/12 - 20120014694 - The invention concerns a method for transmission of data signals from a transmitting device (BS) to a receiving device (RAH1) using an envelope elimination and restoration amplifier (EER1, EER2) for signal amplification, wherein the data signals are represented by envelope signal components and phase signal components in a first part...

Method and device for sending and receiving service data
12/29/11 - 20110318001 - In the field of communications technologies, a method and device for sending and receiving service data provided by embodiments of the present invention may be capable of solving the problem that a network system cannot bear a service of arbitrary rate. The method for sending service data includes: receiving at...

Method and device for sending upstream transfer frame in passive optical network
12/22/11 - 20110311225 - The present invention relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes:...

Pseudo-noise insertion on unacceptable input data sequence in optical networks
11/24/11 - 20110286742 - The present disclosure provides systems and methods for inserting pseudo-noise in a data stream based on an unacceptable input data sequence in an optical network thereby preventing unnecessary loss of frame in SONET/SDH or Optical Transport Network (OTN) systems. The present disclosure includes a SONET/SDH or OTN framer, a transceiver,...

Daisy chainable onu
10/27/11 - 20110262132 - Embodiments of a scalable optical network unit (ONU) architecture for multi-dwelling units (MDUs) that has a low initial cost (or first port cost) and a low maintenance cost are provided herein. The ONU architecture is scalable in that a growing number of end users can share a single drop fiber...

Time synchronization method and system for a passive optical network system
10/27/11 - 20110262133 - The invention discloses a time synchronization method and system for a passive optical network (PON) system to solve the problem that an ONU cannot be synchronized with an OLT accurately in the PON. The invention implements the time information synchronization between the ONU and the OLT by using a management...

Transceiver phtonic integrated circuit
10/06/11 - 20110243556 - The present invention provides for a transceiver comprising a transmitter portion and a receiver portion. The transmitter portion includes a laser, the laser providing an optical signal having one of a plurality of wavelengths. The optical signal from the laser is modulated to create a first wavelength-division multiplexed signal at...

Visible ray communication system, transmission apparatus, and signal transmission method
09/22/11 - 20110229130 - Disclosed is a visible ray communication system including a transmission apparatus and a reception apparatus, wherein the transmission apparatus includes: a plurality of light emitting devices; an S/P converter for serial-to-parallel converting transmission data, thereby generating N data streams; a modulator for modulating the generated N data streams for respective...

Coupled system multi-core fiber, coupling mode multiplexer and demultiplexer, system for transmission using multi-core fiber and method for transmission using multi-core fiber
08/04/11 - 20110188855 - The multi-core fiber of the present invention uses a multi-core fiber configuration, compatible with the “coupled” operation mode in which coupling between cores is positively utilized, to carry out mode division multiplexing transmission via a multi-core fiber that contains multiple single-mode cores in one optical fiber. The multi-core fiber of...

System and method for indoor positioning using led lighting
07/21/11 - 20110176803 - A system for performing indoor positioning using a Light Emitting Diode (LED) lighting unit is provided. The system includes the LED lighting unit for determining whether transmission packet data exists in a frame to be transmitted, modulating the transmission packet data in accordance with a predetermined method in order to...

Interface device, demultiplexing method, and multiplexing method
07/14/11 - 20110170864 - An interface device for demultiplexing, from a first frame in a transport network, a plurality of second frames multiplexed into the first frame is provided. The interface device includes an extractor configured to extract a plurality of data groups to constitute the first frame, and a second frame generator configured...

Mapping method, apparatus, and system for data transmission
07/14/11 - 20110170865 - A mapping method, an apparatus, and a system for data transmission are provided, so as to solve a problem that mapping between a Passive Optical Network (PON) service transmission path and a Pseudo Wire (PW) and/or a Packet Switched Network (PSN) tunnel cannot be realized on a premise of ensuring...

Systems and method for routing optical signals
07/07/11 - 20110164875 - Systems and a method for routing optical signals are disclosed. One system includes a first large core hollow metal waveguide configured to guide a substantially coherent optical beam. A second large core hollow waveguide is optically coupled to the first waveguide with a coupling device. The coupling device is configured...

In or relating to multicarrier communication
06/30/11 - 20110158644 - The invention relates to improvements in or relating to multicarrier communication and includes a method and a system for communication between an optical line terminal and a plurality of users over a single optical fibre. A portion of a down-stream optical signal is input to an optical circuit, the downstream...

Orbital angular momentum in spatially multiplexed optical fiber communications
06/23/11 - 20110150464 - Multiple light beams are launched into a single optical fiber, each respective light beam with a corresponding signal. Each of the respective multi-beams are separated by launching each of the light at a different incidence angle and/or input position, into the optical fiber. In this way, each light beam is...

Optical signal transmission systems, transmitters, receivers, and optical signal transmission method
06/23/11 - 20110150465 - An optical signal transmission system comprises a transmitter that phase-modulates two optical signals of a same frequency by asymmetrically chirping the two optical signals, combines the two optical signals that have been phase-modulated as polarization components according to polarization multiplexing, and transmits an optical signal that has been combined and...

Optical transmitter adaptation to network topology
06/16/11 - 20110142446 - The present invention provides a system, apparatus and method to efficiently switch from one modulation format to another modulation format based upon a current route or path through a network topology of a network communication system. According to various embodiments of the invention, a network topology map is generated identifying...