公开(公告)号：US20190273634A1

公开(公告)日：2019-09-05

申请号：US16413811

申请日：2019-05-16

申请人： Huawei Technologies Co., Ltd.

发明人： Guikai Peng ,  Huafeng Lin ,  Shiwei Nie ,  Xuming Wu ,  Liming Fang ,  Yinghua Dong

IPC分类号： H04L12/46 ,  H04J14/02 ,  H04B10/27 ,  H04B10/60

摘要： A passive optical network communication method, including receiving an Ethernet packet carrying an optical network unit identifier, determining a correspondence between the optical network unit identifier and an optical network unit type according to the optical network unit identifier, determining that an optical network unit that receives the Ethernet packet is a first type of optical network unit, where the optical network unit type includes the first and second type of optical network unit, and a packet receiving rate of the first type is different from that of the second type, determining a correspondence between the optical network unit type and a channel according to the first type, determining a channel corresponding to the first type, encapsulating the Ethernet packet into a gigabit-capable passive optical network encapsulation method (GEM) frame, and sending the GEM frame to the first type of optical network unit using the determined channel.

公开(公告)号：US10404363B2

公开(公告)日：2019-09-03

申请号：US15583554

申请日：2017-05-01

申请人： Teradyne, Inc.

发明人： Tushar K. Gohel ,  Pavel Gilenberg

IPC分类号： H04B10/077 ,  H04B10/25 ,  G01R31/00 ,  H04B10/07 ,  H04B10/40 ,  H04B10/60 ,  H04B10/50

摘要： Example pin electronics includes driver circuitry to output a first optical signal to a UUT. The first optical signal is based on a first signal representing first informational content and one or more second signal representing first parametric information. Receiver circuitry receives a second optical signal from the UUT. The second optical signal is related to a third signal representing second informational content and one or more fourth signal representing second parametric information. Comparison circuitry obtains parametric data representing at least one of the first parametric information or the second parametric information, and compares, based on the parametric data, the at least one of the first parametric information or the second parametric information to one or more thresholds. Control circuitry adjusts at least some of the first parametric information prior to output of the first optical signal, and one or more of the thresholds.

公开(公告)号：US20190265424A1

公开(公告)日：2019-08-29

申请号：US16406393

申请日：2019-05-08

申请人： SONY CORPORATION

发明人： Yasuhisa Nakajima ,  Masanari Yamamoto

IPC分类号： G02B6/42 ,  H04B10/25 ,  H04B10/60 ,  G02B6/04 ,  G02B6/32 ,  G02B6/43 ,  G02B6/36 ,  G02B6/38

摘要： An optical connector according to the present disclosure includes: optical transmission paths that have end faces aligned in a predetermined region, and transmit optical signals. The optical transmission paths correspond to transmission channels or reception channels. The optical transmission paths of the transmission channels are distributed and arranged on a periphery of the predetermined region as compared with a case where the optical transmission paths of the transmission channels are concentrated and arranged at a center of the predetermined region. This configuration can increase an output of an optical signal, and make it possible to improve transmission quality at a low cost while improving a safety standard.

公开(公告)号：US10397133B2

公开(公告)日：2019-08-27

申请号：US15745413

申请日：2016-07-14

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Saki Hatta ,  Tomoaki Kawamura ,  Kenji Kawai ,  Nobuyuki Tanaka ,  Satoshi Shigematsu ,  Namiko Ikeda ,  Shoko Ohteru ,  Junichi Kato

IPC分类号： H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H04L12/44 ,  H04Q11/00 ,  H04L12/911

摘要： An upstream allocation circuit (14) and a downstream allocation circuit (15) are provided in an OLT (1). For example, a superimposed frame obtained by bundling upstream frames (upstream control frames+upstream data frames) from all ONUS is input to the upstream allocation circuit (14) via a frame reproduction circuit (12-1). The superimposed frame may be generated at the stage of optical signals or generated after converting optical signals into electrical signals. The upstream allocation circuit (14) allocates each of the upstream control frames bundled into the superimposed frame to a predetermined PON control circuit (13) based on information (PON port number or LLID) added to the frames. The downstream allocation circuit (15) allocates, to a preset frame reproduction circuit (12), each downstream control frames output from the PON control circuits (13).

公开(公告)号：US20190261470A1

公开(公告)日：2019-08-22

申请号：US16286496

申请日：2019-02-26

申请人： The Regents of the University of California

发明人： Albert Wang

IPC分类号： H05B33/08 ,  H04B10/69 ,  H04B10/50 ,  H04B10/516 ,  H04B10/60 ,  H04W12/06 ,  H01L25/07 ,  H01L33/18 ,  H01L33/48 ,  G05F1/10 ,  H01L23/31 ,  H04B10/116

摘要： This disclosure relates to visible light communication (VLC) system-on-a-chip (SoC) systems/methods and VLC system-in-a-package (SiP) systems/methods. A VLC SoC system may include an integrated circuit comprising a VLC encoder and an LED driver fabricated on a first portion of a silicon substrate and an LED fabricated in a compound semiconductor selectively grown on a second portion of the silicon substrate. A VLC SiP system may include an integrated circuit comprising a VLC encoder and an LED driver fabricated on a silicon substrate and an LED fabricated in a compound semiconductor. The integrated circuit and the LED may be packaged in a SiP module. Interconnects may be formed between the integrated circuit and the LED.

公开(公告)号：US10382141B2

公开(公告)日：2019-08-13

申请号：US16033799

申请日：2018-07-12

申请人： The United States of America, as Represented by the Secretary of Commerce

发明人： Sergey V. Polyakov ,  Ivan Burenkov

IPC分类号： H04B10/70 ,  H04B10/60 ,  H04B10/50

摘要： A communication linker includes: a classical encoder; an optical transmitter; a receiver; a local oscillator in communication with the receiver and that: receives a feedback signal; and produces a displacement frequency, based on the feedback signal; a single photon detector in communication with the receiver and that: receives an optical signal from the receiver; and produces a single photon detector signal, based on the optical signal; a signal processor in communication with the single photon detector and that: receives the single photon detector signal from the single photon detector; produces the feedback signal, based on the single photon detector signal; and produces a decoded signal, based on the single photon detector signal, the decoded signal comprising a frequency of the feedback signal.

公开(公告)号：US10367664B2

公开(公告)日：2019-07-30

申请号：US15596034

申请日：2017-05-16

申请人： Luxtera, Inc.

发明人： Brian Welch ,  Daniel Kucharski

IPC分类号： G02B6/42 ,  H04B10/50 ,  H04B10/60 ,  H04B10/69 ,  H04L25/02 ,  H04L25/06 ,  H04B10/516 ,  H04B10/564

摘要： Methods and systems for split voltage domain transmitter circuits are disclosed and may include a two-branch output stage including a plurality of CMOS transistors, each branch of the two-branch output stage comprising two stacked CMOS inverter pairs from among the plurality of CMOS transistors; the two stacked CMOS inverter pairs of a given branch being configured to drive a respective load, in phase opposition to the other branch; and a pre-driver circuit configured to receive a differential modulating signal and output, to respective inputs of the two stacked CMOS inverters, two synchronous differential voltage drive signals having a swing of half the supply voltage and being DC-shifted by half of the supply voltage with respect to each other. The load may include a series of diodes that are driven in differential mode via the drive signals. An optical signal may be modulated via the diodes.

公开(公告)号：US10352866B1

公开(公告)日：2019-07-16

申请号：US15948995

申请日：2018-04-09

申请人： Mehmet Arbatli

发明人： Mehmet Arbatli

IPC分类号： G01N21/85 ,  G01N21/88 ,  H04B10/60 ,  H04B10/516 ,  A61M1/36 ,  G01N15/00 ,  G01N35/10 ,  G01N15/10

摘要： A system for detecting bubbles within a liquid flowing in an interior of a pipe. The system includes a transmitter emitting directed light through the liquid flowing through the pipe and a receiver for receiving the emitted directed light from the transmitter. The transmitter and receiver are affixed on opposite sides of the pipe. The system also includes a microcontroller having a modulator. The microcontroller communicates with the transmitter and receiver. The microcontroller sends a modulation protocol for emitting the directed light with a specified modulation protocol to the transmitter and receiver. The transmitter emits the directed light as modulated light based upon the modulation protocol and the receiver filters out all unmodulated light, correlates information on modulated light received from the transmitter and sends correlated light information to the microcontroller. The microcontroller determines a presence of bubbles in the liquid based on the light information received from the receiver.

公开(公告)号：US10348412B1

公开(公告)日：2019-07-09

申请号：US15859339

申请日：2017-12-30

申请人： Nanjing University of Aeronautics and Astronautics

发明人： Min Xue ,  Yuqing Heng ,  Shilong Pan

IPC分类号： H04B10/548 ,  H04B10/50 ,  H04B10/077 ,  H04B10/40 ,  H04B10/07 ,  H04B10/60

摘要： An apparatus comprises an optical signal generator configured to provide a first radiation comprising a first nominal carrier frequency and a second nominal carrier frequency, and provide a second radiation comprising a third nominal carrier frequency and a fourth nominal carrier frequency; an optical to electrical converter coupled to the optical signal generator and configured to: generate a first electrical current based on the first radiation and the second radiation without the second radiation passing through the Device under Test (DUT); and generate a second electrical current based on the first radiation and the second radiation after the second radiation passes through the DUT; and a data processor configured to determine a transfer function of the DUT at the third nominal carrier frequency and the fourth nominal carrier frequency based on the first electrical current and the second electrical current.

公开(公告)号：US20190204846A1

公开(公告)日：2019-07-04

申请号：US16221822

申请日：2018-12-17

申请人： NXP USA, INC.

发明人： RALF REUTER

IPC分类号： G05D1/02 ,  G01S13/93 ,  H04B10/40 ,  G01S7/40 ,  H04B10/60 ,  H04B10/50

CPC分类号： G01S7/4017 ,  G01S7/03 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9332 ,  G01S2013/9346 ,  H04J3/0641

摘要： A radar system (300) and a method of operating the radar system is disclosed, the radar system (300) comprising: a first IC (310), arranged to receive a reference clock signal (380) and configurable to generate a common local oscillator signal (400) based on the reference clock signal (380); a second IC (320), arranged to receive the common local oscillator signal (400) from the first IC (310); and a controller (350), adapted to detect a fault in the first IC (310), and configured, upon detection of a fault in the first IC (310), to send at least one signal to the second IC (320) for reconfiguring the second IC (320) from a slave mode to a master mode; wherein, when operating in the slave mode, the second IC (320) is configured to use the common local oscillator signal (400) generated by the first IC (310), and, when operating in the master mode, said second IC (320) is configured to use an internally-generated local oscillator signal. The second IC (310) may be configured to receive the reference clock signal (380), wherein the internally-generated local oscillator signal is based on the reference clock signal (380).