| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 370542000 | Demultiplexing single input channel to plural output channels | 27 |
| 20090086767 | METHOD AND APPARATUS FOR CLOCK RECOVERY - A clock recovery method and apparatus is provided. The high-order demultiplexing-demapping unit ( | 04-02-2009 |
| 20090161698 | METHOD AND APPARATUS FOR DATA PROCESSING - A data processing apparatus, having an overhead branching unit configured to branch a signal data into an overhead and signal data; a control unit configured to retain the overhead; a time slot interchange unit configured to perform time slot interchange on the signal data; and an overhead insertion unit configured to insert the signal data and the overhead output from the time slot interchange unit and outputting as signal data. | 06-25-2009 |
| 20090168813 | Multiple Transport Receiver - Systems and methods for de-combining a single combined data stream into a plurality of original data streams, where each original data stream has its own timing information, and passing respective original data steams to, e.g., one or more DVB-T modulators for broadcast into, e.g., a single frequency network. The original data streams and the single combined data stream may be, e.g., MPEG-compliant data streams. | 07-02-2009 |
| 20090175300 | Signal Separating Circuit, Signal Separating Method, Signal Multiplexing Circuit and Signal Multiplexing Method - When a data signal of a first channel is an RZ signal having a pulse period T | 07-09-2009 |
| 20090245293 | High speed, low power all CMOS thermometer-to-binary demultiplexer - High speed, low power all CMOS thermometer-to-binary demultiplexer. A received signal undergoes digital sampling (e.g., as within an ADC) to generate a signal that subsequently undergoes encoding (e.g., transformation from thermometer encoded data to binary encoded data) and de-multiplexing. Two separate de-multiplexing stages are employed when performing combined encoding and de-multiplexing. In addition, the individual DEMUXs of the two stages are clocked using a distributed clock generation architecture, such that, reset and time-interleaving is controlled on the ADC clock generator. The thermometer-to-binary encoders are placed very close to the input stage which facilitates very fast data rates while consuming relatively lower power. | 10-01-2009 |
| 20100260209 | APPARATUS AND METHOD FOR PROVIDING WHITE BOARD SERVICE IN MOBILE COMMUNICATION SYSTEM - An apparatus and a method for providing a white board service in a mobile communication system are provided, wherein a bit stream received from a counterpart node is demuxed into data of a logic channel and data of a control channel using a demuxing protocol. The demuxed data is decoded for output. | 10-14-2010 |
| 20120201258 | ASYMMETRICAL TRANSFORMER OUTPUT DEMULTIPLEXING (ATODEM) CIRCUIT - An asymmetrical transformer output demultiplexing (ATODEM) circuit is disclosed. The ATODEM circuit of the present disclosure includes N input windings, wherein N is a natural number. Each of the N input windings have input terminals that couple to output terminals of N PAs. The ATODEM further includes M output ports wherein M is a natural number, each of the M output ports having N series coupled windings coupled between a load terminal and a return terminal. The physical attributes of the N input windings, and the N series coupled windings of the M output ports are asymmetrical such that in an Nth operation mode an Nth PA first-load line impedance matches an output impedance of an Nth PA coupled to the input terminals. | 08-09-2012 |
| 20130070792 | METHOD AND APPARATUS FOR DENOISING OF PHYSIOLOGICAL SIGNALS - Certain aspects of the present disclosure relate to techniques for denoising of physiological signals. A signal (e.g., physiological signal) comprising at least two signal channels can be decomposed (e.g., using independent component analysis (ICA)) into at least two independent components. Then, independent component (IC) denoising can be applied to estimate which of the at least two independent components belong to a signal space and which of the at least two independent components belong to a noise space using a statistical metric associated with the at least two signal channels. A de-noised version of the signal can be generated by preserving in the signal only one or more independent components of the at least two independent components belonging to the signal space. | 03-21-2013 |
| 20130250977 | WAVELENGTH MULTIPLEXER/DEMULTIPLEXER APPARATUS - An apparatus comprising an optical multiplexer/demultiplexer having a set of input ports and a set of output ports, the optical multiplexer/demultiplexer configured to demultiplex a wavelength division multiplexed optical signal to one port of the set of input ports, and to output a plurality of demultiplexed wavelength channels to one of a plurality of subsets of output ports within the set of output ports. The apparatus comprises an optical switch configured to route the wavelength division multiplexed signal to a selected one of the input ports, thereby causing the plurality of demultiplexed wavelength channels to be output by the optical multiplexer/demultiplexer to selected ones of the plurality of subsets of output ports. | 09-26-2013 |
| 20140023097 | DOWNSTREAM ADAPTIVE MODULATION IN BROADBAND COMMUNICATIONS SYSTEMS - A downstream adaptive modulation system and method. The downstream adaptive modulation system comprises a wireless access termination system and one or more wireless modems. The wireless access termination system includes a plurality of queues and a parser. The parser parses data traffic onto the plurality of queues. Each queue is associated with a different coding and modulation scheme. Each of the one or more wireless modems receives data traffic from the plurality of queues based on the wireless modem's ability to demodulate and decode the signal from each of the plurality of queues. When a wireless modem experiences a change in signal strength, the present invention enables the wireless modem to adapt to data from other queues to compensate for the change in signal strength. Thus, if the signal strength improves over a period of time, the wireless modem may receive data at a higher order modulation and FEC code rate. If the signal strength weakens over a period of time, the wireless modem may receive data at a lower order modulation and FEC code rate. | 01-23-2014 |
| 20140050233 | METHOD AND APPARATUS FOR HETERODYNE COHERENT DETECTION - A simplified coherent receiver based on heterodyne detection with only two balanced photo detectors (PD) and two analog-to-digital converters (ADC) is disclosed. The polarization diversity hybrid can be simplified relative to the conventional one. The detected intermediate frequency signals are first down converted to baseband with I/Q separation. | 02-20-2014 |
| 20140072001 | CARRIER AGGREGATION RECEIVER ARCHITECTURE - A receiver architecture for carrier aggregation is disclosed. In an exemplary design, an apparatus (e.g., a wireless device, a circuit module, etc.) includes a plurality of low noise amplifiers (LNAs), a plurality of switches, and at least one downconverter. The LNAs receive and amplify at least one input radio frequency (RF) signal and provide at least one amplified RF signal. The switches are coupled to the outputs of the plurality of LNAs. The at least one downconverter is coupled to the plurality of switches, downconverts the at least one amplified RF signal, and provides at least one downconverted signal. The switches reduce the number of downconverters needed to support reception of transmissions on multiple sets of carriers via multiple receive antennas. The LNAs and the switches may be implemented on at least one front-end module or a back-end module. The downconverter(s) are implemented on the back-end module. | 03-13-2014 |
| 20140119392 | RECEIVER AND METHOD FOR RECEIVING A COMPOSITE SIGNAL - A first signal generator is arranged to generate a first signal. A ranging code generator is arranged for generating a ranging code. A mixer is capable of accepting the ranging code and the first signal and outputting a locally generated reference signal. After down-conversion and digitization of the received composite signal, the code correlator can correlate the digital received composite signal to the locally generated reference signal to decode at least a first portion of the received composite signal, while leaving a second portion of the received composite signal undecoded. A tracking loop signal processor can process one or more digital signals, of the locally generated reference signal with respect to the digital received composite signal to maximize correlation of the received composite signal to the locally generated reference signal. | 05-01-2014 |
| 20140126588 | OPTICAL RECEIVER FOR MULTIMODE COMMUNICATIONS - An optical receiver ( | 05-08-2014 |
| 20140177658 | Optical Wavelength-Selective Switch With A Bank Of Wavelength Convertors - An apparatus includes a wavelength-selective optical switch able to route light between a first optical port and a plurality of second optical ports. The wavelength-selective optical switch includes a bank of optical wavelength-converters. Each wavelength converter of the bank is able to selectively optically couple an optical data stream on a wavelength-channel between the first optical port and individual ones of the second optical ports. | 06-26-2014 |
| 20140198812 | Communications Network Transport Node, Optical Add-Drop Multiplexer and Method of Routing Communications Traffic - A communications network transport node comprising an optical add-drop multiplexer (OADM), comprising optical signal processing apparatus, electrical signal routing apparatus, and a packet switch. Each optical signal processing apparatus comprises an optical input, an optical output, optical-to-electrical (O-E) signal conversion apparatus arranged to receive input optical channel signals and to convert each into an input radio frequency (RF) modulated electrical channel signal, and electrical to optical (E-O) signal conversion apparatus arranged to receive output RF modulated electrical channel signals and to convert each into an output optical channel signal. The electrical signal routing apparatus determines which input RF modulated electrical channel signals are to be dropped, and routes these to the electrical drop outputs, and which are to be transmitted, and routes these to a selected E-O apparatus. The routing apparatus receives further electrical channel signals and routes these to a selected E-O apparatus. | 07-17-2014 |
| 20140211817 | MULTIPLEXING MULTIPLE SERIAL INTERFACES - An integrated circuit with two operating modes is described. During a first operating mode, a de-multiplexer selectively couples information received via a common set of pads to first control logic, which decodes the information based on a first serial-interface technique. Moreover, during a second operating mode, the de-multiplexer selectively couples a first portion of the information to the first control logic and a second portion of the information to second control logic, which decodes the second portion based on a second serial-interface technique. By facilitating time-domain de-multiplexing of two similar serial-interface techniques, the integrated circuit can overcome the constraints imposed by a low or limited pin count. | 07-31-2014 |
| 20140301413 | METHOD AND SYSTEM FOR AN ANALOG CROSSBAR ARCHITECTURE - Methods and systems for an analog crossbar may comprise, in a wireless device comprising a receiver path with an analog crossbar: receiving a digital signal comprising a plurality of channels; amplifying the received signal; converting the amplified signal to an analog signal; separating the analog signal into a plurality of separate channels; routing the plurality of separate channels to desired signal paths utilizing the analog crossbar; and converting the routed plurality of separate channels to a plurality of digital signals. The analog crossbar may comprise an array of complementary metal-oxide semiconductor (CMOS) transistors. The analog crossbar may comprise a plurality of differential pair signal lines, and a plurality of single-ended signal lines. The received signal may be amplified utilizing a low-noise amplifier (LNA), where a gain level of the LNA may be configurable. The analog signal may be separated into separate channels using a channelizer. | 10-09-2014 |
| 20140314104 | Flexible Remote Node (RN) For Dynamic Traffic Allocation in Passive Optical Networking (PON) and Mobile Backhaul (MBH) Applications - A computer implemented method for dynamically allocating traffic in a passive optical communication system includes employing an individual wavelength channel to carry different data services from an individual transmitter, configuring an optical network unit into optical network unit groups serving at least two community of users; and providing a flexible remote node with wavelength routing flexibility including switching wavelength traffic from optical network user groups with low capacity requirements to optical network user groups with increased wavelength traffic requirements. | 10-23-2014 |
| 20150055665 | RECEIVER OPTICAL MODULE FOR WAVELENGTH MULTIPLEXED SIGNAL - A receiver optical module that receives a wavelength multiplexed signal is disclosed. The receiver optical module includes an optical de-multiplexer that generates a plurality of signals contained in the wavelength multiplexed signal depending on wavelengths of the signals. The wavelength de-multiplexer has features that the optical de-multiplexer has a plurality of sub-elements stacked to each other, where each of the sub-elements de-multiplexes a portion of the wavelength multiplexed signal. Or, the optical de-multiplexer has a series of wavelength selective filters each extracting signal components having outermost wavelengths from signal components entering therein. | 02-26-2015 |
| 20150071312 | SYSTEM AND METHOD USING CASCADED SINGLE PARTITY CHECK CODING - A system and method including a parity bit encoder for encoding each n−3 bits of data to be transmitted with three parity check bits to produce blocks of n bits (n−3 information bits plus three parity bits associated with the n information bits). Each of the blocks of n bits are Gray mapped to three QAM symbols that are modulated onto an optical wavelength and transmitted to a receiver. A maximum a posteriori (MAP) decoder is used at the receiver to correct for cycle slip. | 03-12-2015 |
| 20150085884 | WAVELENGTH-SELECTIVE SWITCH FOR SPACE-DIVISION MULTIPLEXED SYSTEMS - An optical apparatus includes a front optics section and a spectrometer section. The front optics section includes a spot de-multiplexer configured to receive a plurality of multi-mode optical signals each having a plurality of modal components, and to output in a linear array of a corresponding plurality of optical beams for each multimode optical signal. The spectrometer section includes a wavelength steering element configured to separate each of the optical beams into a plurality of wavelength channels. A fiber steering element is configured to steer the wavelength channels between the optical beams. | 03-26-2015 |
| 20150124845 | OPTICAL MODE STEERING FOR WAVELENGTH STABILIZATION - Embodiments of the invention describe wavelength stabilization of selective optical components (e.g., multiplexers, de-multiplexers) using optical mode steering. An additional waveguide structure is coupled to the free propagation region of the selective optical component; this additional waveguide structure moves a spatial position or a direction of a propagation of an optical mode at the free propagation region in order to adjust a wavelength response of the component. By moving the position or direction of the optical mode, the wavelength response of the component may be changed; in other words, by tuning the position or direction of the optical mode, a component's wavelength/channel response is “remapped” to account for the mis-targeting (i.e., wavelength shift) related to a temperature change or a design/manufacturing defect. | 05-07-2015 |
| 20150139253 | RECYCLED-CARRIER MODULATION - An optical modulation apparatus for modulating an electromagnetic (e.g., radio frequency (RF)) signal onto an optical carrier signal may use carrier recycling to increase modulation efficiency. Such an arrangement may be implemented, e.g., using a Fabry-Perot topology and/or using a travelling-wave modulator. | 05-21-2015 |
| 20150372845 | DATA PROCESSING DEVICES AND DATA PROCESSING METHODS - The present technology relates to data processing devices and data processing methods that lower costs and enable CB (Channel Bonding). A transmission device divides a BB stream as a stream of BB (Baseband) frames into divisional streams by distributing the BB frames of the BB stream to data slices. The dividing of the BB stream is performed by limiting the data rate ratio between the data rates of the divisional streams. A reception device recomposes the original BB stream from the divisional streams obtained from data transmitted from the transmission device. The present technology can be applied to CB such as PLP (Physical Layer Pipe) bundling. | 12-24-2015 |
| 370543000 | Different rate output channels | 1 |
| 20130287050 | Method and Apparatus for Multiplexing Ethernet Channels - One embodiment of the present invention provides a system that facilitates multiplexing low-speed Ethernet channels onto a high-speed channel. During operation, the system receives a number of low-speed Ethernet channels. Next, the system derives N bit streams from the number of low-speed Ethernet channels, and feeds each bit stream to an input of a serializer, which is conventionally used to serialize bits from a single channel. Each input of the serializer comprises one bit of an N-bit-wide parallel input bus, and the data rate of the serializer output matches the data rate of the high-speed channel. The system then transmits the output of the serializer onto the high-speed channel. | 10-31-2013 |
| 370544000 | Same rate output channels | 1 |
| 20090316731 | METHOD AND SYSTEM FOR DUAL DIGITAL MICROPHONE PROCESSING IN AN AUDIO CODEC - Methods and systems for dual digital microphone processing in an audio CODEC are disclosed and may include demultiplexing one or more received time-multiplexed digital audio signals from one or more digital microphones, and separately processing each of the demultiplexed digital audio signals. The digital microphones may include microelectromechanical (MEMS) microphones. The demultiplexed digital audio signals may be level-converted, downshifted, and/or filtered. The filtering may include a finite impulse response (FIR) filter. A sampling rate of the one or more demultiplexed digital audio signals may be converted by repeating the demultiplexed digital audio signals. Audio beamforming and/or diversity processing may be performed utilizing the digital microphones. | 12-24-2009 |
