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| Application No. | Application Title | Issue Date |
| 20120113335 | Shutter-glass eyewear communications receiver Shuttering eyewear used to view 3D imagery and/or dual-view images may utilize an IR receiver filter with moderate to wide bandwidth to pass data sidebands of an on-off keying signal while strongly rejecting nearby interference sources. Filtering of the signal may be ac... | 05/10/2012 |
| 20120087668 | METHOD AND DEVICE FOR GENERATING AND RECEIVING OOFDM SIGNAL, AND WAVELENGTH-DIVISION MULTIPLEXING SYSTEM Embodiments of the present invention relate to the field of communications, and in particular, disclose a method and a device for generating and receiving an OOFDM signal, and a wavelength-division multiplexing system. The method for generating an OOFDM signal includes:... | 04/12/2012 |
| 20120087678 | OPTO-ELECTRONIC ASSEMBLY FOR A LINE CARD In one embodiment, the opto-electronic assembly is a hybrid integrated circuit having an array of avalanche photodiodes (APDs) that are electrically coupled to a corresponding array of transimpedance amplifiers (TIAs), with both the APDs and TIAs being mounted on a comm... | 04/12/2012 |
| 20120082464 | COHERENT OPTICAL RECEIVING APPARATUS, COHERENT OPTICAL COMMUNICATIONS SYSTEM EMPLOYING SAME, AND COHERENT OPTICAL COMMUNICATIONS METHOD With respect to a coherent optical receiving apparatus, a polarization multiplexing light signal, whereupon a first signal is placed upon a first polarized wave light and a second signal is placed upon a second polarized wave light, is polarization divided upon the tran... | 04/05/2012 |
| 20120076506 | COHERENT OPTICAL RECEIVING APPARATUS AND COHERENT OPTICAL RECEIVING METHOD A coherent optical receiving apparatus according to the present invention includes a coherent optical receiving unit to receive a whole of an optical multiplexed signal into which an optical signal is multiplexed, a tunable filter, a local oscillation unit, and a contro... | 03/29/2012 |
| 20120076509 | RECEIVER CHIP AND METHOD FOR ON-CHIP MULTI-NODE VISIBLE LIGHT COMMUNICATION A receiver chip, system and method for on-chip multi-node visible light communication, the receiver chip comprising: an array of receiver cells comprising an array of photodetectors, each receiver cell comprises at least one photodetector and is to receive light through... | 03/29/2012 |
| 20120070159 | SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, SIGNAL RECEIVING CIRCUIT, METHOD FOR ESTABLISHING OPTICAL SIGNAL SYNCHRONIZATION, AND OPTICAL SIGNAL SYNCHRONIZATION SYSTEM To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival ... | 03/22/2012 |
| 20120063789 | PHOTON DETECTOR A photon detection system comprising: an avalanche photodiode; a biasing circuit configured to reverse bias said avalanche photodiode; a first measuring circuit configured to measure avalanche events occurring in said avalanche photodiode as a transient current due to p... | 03/15/2012 |
| 20120057879 | DISCRETE BOOTSTRAPPING IN AN OPTICAL RECEIVER TO PREVENT SIGNAL FEEDBACK An optical receiver assembly that is configured to avoid the introduction of feedback in an electrical signal converted by the assembly is disclosed. In one embodiment, an optical receiver assembly is disclosed, comprising a capacitor, an optical detector provided with ... | 03/08/2012 |
| 20120051754 | OPTICAL RECEIVER, METHOD FOR RECEIVING OPTICAL SIGNAL, AND OPTICAL TRANSMISSION SYSTEM An optical receiver includes: an optical to electric converter that converts a received optical signal into an analog electric signal; an analog to digital converter that converts the analog electric signal obtained by the optical to electric converter into a digital si... | 03/01/2012 |
| 20120033980 | Burst Optical Signal Receiving Device A burst optical signal receiving device is provided, which includes an optical receiving component and a limiting amplifying circuit unit. The optical receiving component further includes a photodetector, a trans-impedance amplifier, a first direct current (DC) cancella... | 02/09/2012 |
| 20120020677 | RECEIVING DEVICE AND DEMODULATION DEVICE To adequately perform sampling, a receiving device that solves problems that involve an increase in circuit area and an increase in cost, is provided. A/D converter 2 samples a coherent signal that is an analog signal in synchronizat... | 01/26/2012 |
| 20120020676 | APPARATUS FOR RECEIVING OPTICAL SIGNAL AND METHOD OF CONTROLLING PHASE OFFSET FOR DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING An apparatus for receiving optical signals in DQPSK and method of controlling a phase offset in receiving optical signals for DQPSK is provided. An original optical signal modulated in DQPSK is received. The original optical signal is delayed by one bit to make a delay ... | 01/26/2012 |
| 20120014691 | CALIBRATING AN OPTICAL DOWNCONVERTER An apparatus calibrates an optical downconverter configured to receive an optical input signal at a signal input and an optical reference signal at a reference input, and to provide at multiple output nodes characterizing signals for characterizing the optical input sig... | 01/19/2012 |
| 20110318021 | Feed-Forward Carrier Phase Recovery for Optical Communications The carrier phase of a carrier wave modulated with information symbols is recovered with a multi-stage, feed-forward carrier phase recovery method. A series of digital signals corresponding to the information signals is received. For each digital signal, a coarse phase ... | 12/29/2011 |
| 20110311232 | Optical receiver and optical transmission system Disclosed herein is an optical receiver including: a light receiving element configured to have an anode and a cathode and generate a photocurrent dependent on received signal light; a current-voltage conversion circuit configured to be connected to the anode of the lig... | 12/22/2011 |
| 20110311235 | BURST TRANSMISSION METHOD, AND RECEIVER RESETTING METHOD AND APPARATUS IN A PASSIVE OPTICAL NETWORK A burst transmission method and a receiver resetting method and apparatus in a Passive Optical Network (PON) are provided. A burst receiver resetting method in a PON includes: receiving a preamble sequence and synchronizing data; after synchronizing the data, continuing... | 12/22/2011 |
| 20110299856 | DYNAMIC IMPEDANCE PHOTODETECTOR RECEIVER CIRCUIT A photodetector receiver circuit for an optical communication system includes an optical photodetector which receives optical signals and converts them into an electrical current. In one illustrative embodiment, a dynamic impedance module which switches the receiver cir... | 12/08/2011 |
| 20110299857 | TRANSMISSION DEVICE, TRANSMISSION METHOD, RECEPTION DEVICE, RECEPTION METHOD, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD There is provided a transmission device including an optical signal generation section configured to generate an optical signal formed by arranging one or more of each of a plurality of kinds of same-color light beams each having different phase, and a transmission sect... | 12/08/2011 |
| 20110293293 | TRANS-IMPEDANCE AMPLIFIER WITH VARIABLE BANDWIDTH AND DIGITAL COHERENT OPTICAL RECEIVER INSTALLING THE SAME A trans-impedance amplifier (TIA) with an adjustable bandwidth is disclosed. The TIA of the present invention includes the amplifying stage and the emitter follower stage arranged in the downstream of the amplifying stage. The transistor in the amplifying stage includes... | 12/01/2011 |
| 20110293268 | METHOD AND APPARATUS FOR PROVIDING COMMUNICATION USING A TERAHERTZ LINK A method and apparatus for establishing a terahertz link using a multi-element lens array that comprises a liquid lens are disclosed. For example, the method receives detected terahertz signals from one or more detectors, where a liquid lens is deployed with each of the... | 12/01/2011 |
| 20110293266 | OPTICAL TRANSMITTING DEVICE AND OPTICAL RECEIVING DEVICE There is provided an optical transmitting device including a detector to detect a transmission rate of a transmission signal, a transmission method selector to determine a transmission method of the transmission signal, based on the transmission rate detected by the det... | 12/01/2011 |
| 20110293292 | Mitigating Signal Offsets in Optical Receivers An optical receiver circuit is disclosed in which a number of electrical signals are processed to extract data encoded therein. The electrical signals may be compared during the process to selectively remove one or more waveforms from one or more corresponding electrica... | 12/01/2011 |
| 20110279660 | IR RECEIVER, AND LIQUID CRYSTAL SHUTTER GLASSES HAVING THE SAME There are provided an IR receiver and liquid crystal shutter glasses with the same, and more particularly, an IR receiver and liquid crystal shutter glasses having the same to solve the problem in that a pair of the crystal liquid shutter glasses malfunctions by infrare... | 11/17/2011 |
| 20110280587 | PMD Insensitive Direct-Detection Optical OFDM Systems Using Self-Polarization Diversity A self-polarization diversity technique to combat PMD in a direct-detection optical OFDM system. This technique does not require any dynamic polarization control, and can simultaneous compensate PMD in a WDM system with one device. Simulation results show that this tech... | 11/17/2011 |
| 20110280588 | PARTIAL DPSK (PDPSK) TRANSMISSION SYSTEMS An optical receiver includes a demodulator having a delay interferometer comprising an optical input that receives a phase modulated optical signal from a bandwidth limited transmission system. The delay interferometer has a free spectral range that is larger than a sym... | 11/17/2011 |
| 20110274436 | OPTICAL COMMUNICATION SYSTEM Consistent with the present disclosure a transmitter is provided that transmits data in either a “quasi-DP-BPSK” (“QDP”) mode or in a DP-QPSK mode. In the QDP mode, data bits are transmitted as changes in phase between first and second phase states along a first... | 11/10/2011 |
| 20110274441 | Methods and Devices for Modulating a Signal The invention relates to a method in a transmitting node for transmitting a modulated optical carrier signal over an optical channel in an optical communications network to a receiving node. The method enables full use of the polarisation domain within a Poincaré spher... | 11/10/2011 |
| 20110262149 | LIGHT RECEPTION DEVICE AND METHOD FOR CONTROLLING THE SAME A light reception device includes: an interferometer that outputs a signal obtained by making an optical phase modulated signal interfere with a reference signal after shifting an optical phase of the optical phase modulated signal by a given amount; a light reception e... | 10/27/2011 |
| 20110255877 | DIGITAL COHERENT RECEIVER AND RECEIVING METHOD A digital coherent receiver includes a front end, an A/D convertor, and a processor. The front end converts a light signal into an electric signal by using a signal light and a local oscillator light. The A/D convertor converts the electric signal of the front end into ... | 10/20/2011 |
| 20110255878 | BANDPASS COMPONENT DECIMATION AND TRANSMISSION OF DATA IN CABLE TELEVISION DIGITAL RETURN PATH A device for and a method of decreasing the data rate of a digital return path link in a Cable Television Hybrid Fiber-Coax system (CATV system) is disclosed. At the node of the CATV system, the bandwidth of the a digital data stream representative of an analog return s... | 10/20/2011 |
| 20110243561 | FILTER, COHERENT RECEIVER DEVICE AND COHERENT RECEIVING METHOD The present invention relates to filter, coherent receiver device and coherent receiving method. The filter is used for converting a partial response signal into a full response signal, wherein the filter uses the following transfer function HPre-Filter(z) wi... | 10/06/2011 |
| 20110243572 | OPTICAL RECEIVER AND COMMUNICATION SYSTEM There is provided an optical receiver including a variable-ratio splitter to split an input signal light into a plurality of signal lights, based on a variable ratio, a plurality of photo detectors to receive the plurality of signal lights respectively, an operation cir... | 10/06/2011 |
| 20110243575 | METHOD FOR ADAPTIVE BLIND EQUALIZATION OF PSK SIGNAL, EQUALIZER AND RECEIVER The present application discloses a method for adaptive blind equalization of a PSK signal, an equalizer and a receiver. According to embodiments as provided, a conjugate product of a current output and a precedent output of an FIR filter is calculated, an equalization ... | 10/06/2011 |
| 20110229152 | Bit-Rate Discrimination Method and Its Apparatus In the present invention, unlike a conventional circuit, discrimination is not made by integrating a logical code that includes “0” and “1” to some extent and produced from a random code, but repetition of an identical pattern of a well-known preamble signal add... | 09/22/2011 |
| 20110222866 | Multirate Burst Mode Receiver There is a need to provide a multirate burst mode receiver for an OLT to be capable of receiving a high-speed burst signal without the need for a special capability of an ONU in a PON system including a mix of ONUs at different transmission bit rates. A multirate burst ... | 09/15/2011 |
| 20110217043 | ITERATIVE CARRIER-PHASE ESTIMATION AND DATA RECOVERY FOR COHERENT OPTICAL RECEIVERS In one embodiment, a coherent optical receiver has an optical detector coupled to a digital processor. The optical detector mixes a received modulated optical signal with a local-oscillator signal to produce a digital measure of the modulated optical signal. The digital... | 09/08/2011 |
| 20110217048 | Delayed interferometer and optical receiver A delayed interferometer includes a branching unit that branches an optical signal into a first optical signal and a second optical signal; a guiding unit that guides the first optical signal in a first optical path to delay the first optical signal when a polarization ... | 09/08/2011 |
| 20110206386 | Apparatus and Method for Stabilizing Power to an Optical Multimode Receiver To stabilize power to an optical multimode receiver a multimode variable optical attenuator is connected to the receiver with the attenuator's voltage being controlled using a feedback signal provided by an output detector, the signal being processed using a control alg... | 08/25/2011 |
| 20110206385 | Method and Apparatus for Frame Detection and Polarization Separation An optical receiver comprising a frame detector configured to receive a polarized signal comprising a first bit stream and a second bit stream, and further configured to identify a plurality of frames in the first bit stream and the second bit stream using a composite h... | 08/25/2011 |
