公开(公告)号：US20220174379A1

公开(公告)日：2022-06-02

申请号：US17548793

申请日：2021-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengmeng FU ,  Yu XIONG ,  Jiangwei MAN ,  Chengyan WANG ,  Xiaofei ZENG ,  Li ZENG

IPC: H04Q11/00 ,  H04B10/69

Abstract: An optical receiver is disclosed, including an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensate gain for the received current signal based on a received control signal, to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal. The optical receiver disclosed can reduce costs while ensuring signal quality.

公开(公告)号：US20210247498A1

公开(公告)日：2021-08-12

申请号：US17241697

申请日：2021-04-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guangyuan SHI ,  Li ZENG ,  Xinhua XIAO

IPC: G01S7/481 ,  G02B26/10 ,  G02B26/08 ,  G01S17/08

Abstract: Embodiments of this application disclose a laser measurement system and a laser radar. In one aspect, a laser measurement system includes N laser ranging components, a reflector, and MEMS micromirror. The N laser ranging components can emit an emergent light beam onto the reflector. The reflector can perform optical path reflecting on the emergent light beam and emit the reflected emergent light beam onto the MEMS micromirror. The MEMS micromirror can change a direction of the emergent light beam to implement two-dimensional scanning, change a direction of an echo light beam, and emit this beam onto the reflector. The reflector can perform optical path reflecting on the echo light beam and emit this beam onto the N laser ranging components. The N laser ranging components can receive the echo light beam and perform ranging based on a time difference between the emergent light beam and the echo light beam.

公开(公告)号：US20230258804A1

公开(公告)日：2023-08-17

申请号：US18136119

申请日：2023-04-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bo ZHANG ,  Li ZENG ,  Xinhua XIAO ,  Yuping WU ,  Hongbiao GAO

IPC: G01S17/66 ,  G01S17/87 ,  G01S17/88 ,  G01S7/00

CPC classification number: G01S17/66 ,  G01S17/87 ,  G01S17/88 ,  G01S7/006

Abstract: A detection and communication system, a control apparatus, and a detection system are disclosed, and may be applied to fields such as augmented reality AR, virtual reality VR, or vehicle-road synergy. The detection and communication system includes: N radars, configured to: separately search for a target, and separately align with the target, where N is an integer greater than 1, K radars that are in the N radars and that align with the target are configured to communicate with the target, N-K radars other than the K radars are configured to track and point the target, and K is a positive integer less than N. The N radars separately align with the target, to help improve precision of alignment between the radar and the target. In addition, some of the N radars may communicate with the target.

公开(公告)号：US20220404473A1

公开(公告)日：2022-12-22

申请号：US17846883

申请日：2022-06-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guangyuan SHI ,  Li ZENG ,  Xinhua XIAO

IPC: G01S7/481 ,  G01S17/08 ,  G02B26/08 ,  G02B26/10

Abstract: Embodiments of this application disclose a laser measurement system and a laser radar. In one aspect, a laser measurement system includes N laser ranging components, a reflector, and MEMS micromirror. The N laser ranging components can emit an emergent light beam onto the reflector. The reflector can perform optical path reflecting on the emergent light beam and emit the reflected emergent light beam onto the MEMS micromirror. The MEMS micromirror can change a direction of the emergent light beam to implement two-dimensional scanning, change a direction of an echo light beam, and emit this beam onto the reflector. The reflector can perform optical path reflecting on the echo light beam and emit this beam onto the N laser ranging components. The N laser ranging components can receive the echo light beam and perform ranging based on a time difference between the emergent light beam and the echo light beam.

公开(公告)号：US20200059314A1

公开(公告)日：2020-02-20

申请号：US16663521

申请日：2019-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqiang JI ,  Shengmeng FU ,  Yanbo LI ,  Lewei ZHANG ,  Li ZENG

IPC: H04J14/02 ,  H04B10/60 ,  H04B10/50 ,  G02B6/293

Abstract: A reconfigurable optical add/drop multiplexer includes N input ports, N output ports, M add ports and M drop ports. Each of the N input ports and each of the M add ports is respectively connected to one first polarizer. Each of the N output ports and each of the M drop ports is respectively connected to one second polarizer. A first end of the first polarizer is connected to a second end of the first polarizer, forming a loop including the first polarizer. A first end of the second polarizer is connected to a second end of the second polarizer, forming a loop including the second polarizer. An annular waveguide array is between a loop LIi and a loop LOj. A first polarizer included in the loop LIi is connected to an ith input port. A second polarizer included in the loop LOj is connected to a jth output port.

公开(公告)号：US20240361437A1

公开(公告)日：2024-10-31

申请号：US18768697

申请日：2024-07-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  POLITECNICO DI MILANO

Inventor： Alfonso INCORONATO ,  Klaus PASQUINELLI ,  Mauro LOCATELLI ,  Franco ZAPPA ,  Ali Ahmed Ali MASSOUD ,  Haitao SUN ,  Hongbiao GAO ,  Li ZENG

IPC: G01S7/487 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10

CPC classification number: G01S7/487 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10

Abstract: There is provided a method and device for time-of-flight (TOF) ranging. The method includes generating, by each photon detector in a photon detector array, a quantized current pulse each time a predefined number of photons is detected. The method further includes summing, by a current adder, the quantized current pulses from all photon detectors to create an analog signal pulse. The method further includes providing, by a peak detector, a digital pulse for each instance where an intensity of the analog signal pulse is greater than signal peaks already measured after the last emitted pulsed laser shot. The method further includes measuring and recording, by a time-to-digital converter (TDC), a TOF each time the digital pulse is provided. The method further includes providing, by a TOF output, a single TDC result indicative of a TOF associated with the analog signal pulse having a highest intensity. The device includes a photon detector, current adder, analog peak detector and a time-of-flight digital converter, wherein each component is configured to perform the respective aspect of the method.

公开(公告)号：US20210152901A1

公开(公告)日：2021-05-20

申请号：US16952912

申请日：2020-11-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengmeng FU ,  Yu XIONG ,  Jiangwei MAN ,  Chengyan WANG ,  Xiaofei ZENG ,  Li ZENG

IPC: H04Q11/00 ,  H04B10/69

Abstract: An optical receiver is disclosed, including an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensate gain for the received current signal based on a received control signal, to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal. The optical receiver disclosed can reduce costs while ensuring signal quality.

公开(公告)号：US20200274631A1

公开(公告)日：2020-08-27

申请号：US15931714

申请日：2020-05-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Andrea MELLONI ,  Francesco MORICHETTI ,  Ruiqiang JI ,  Douglas AGUIAR ,  Maziyar MILANIZADEH ,  Sujie ZHOU ,  Yanbo LI ,  Long LUO ,  Li ZENG

IPC: H04J14/02 ,  H04B10/50 ,  H04B10/25

Abstract: An ADD/DROP filter and an optical add/drop multiplexer are disclosed. An ADD/DROP filter includes an input port, an output port, an add port connecting to a modulator, and a drop port. The modulator is configured to load a pilot signal to a first optical signal to obtain a second optical signal, and transmit the second optical signal to the add port. A third optical signal is input to the input port. A wavelength difference between the second optical signal and the third optical signal is an integral multiple of a free spectral range. A power detector is connected to the output port and/or the drop port. The power detector is configured to obtain an output optical signal from the output port or the drop port and detect an optical power of the output optical signal.

公开(公告)号：US20240208803A1

公开(公告)日：2024-06-27

申请号：US18599907

申请日：2024-03-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiahao WU ,  Li ZENG ,  Wu ZHOU

IPC: B81B7/00 ,  B81B7/02 ,  G02B26/08

CPC classification number: B81B7/0016 ,  B81B7/02 ,  G02B26/0833

Abstract: Embodiments of this application provide a micromirror chip package structure. The micromirror chip package structure includes a micromirror chip, and a first substrate and a second substrate that are stacked, where the micromirror chip is disposed on a side that is of the first substrate and that faces away from the second substrate, where the micromirror chip includes a frame, a movable component, and a first torsion arm, and the movable component is connected to the frame through the first torsion arm; the first substrate includes a vibration isolation platform, an elastic beam, and a support frame, the micromirror chip is disposed on the vibration isolation platform, and the vibration isolation platform is connected to the support frame through the elastic beam; the support frame is fastened to the second substrate, and a gap is formed between the vibration isolation platform and the second substrate.

公开(公告)号：US20160094311A1

公开(公告)日：2016-03-31

申请号：US14891778

申请日：2013-01-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei SU ,  Li ZENG ,  Kai CUI

IPC: H04L1/00 ,  G06F11/10

CPC classification number: H04L1/0041 ,  G06F11/10 ,  H04L1/0045 ,  H04L1/0057 ,  H04L25/14 ,  H04L25/49

Abstract: Embodiments of the present invention disclose an Ethernet data processing method, an Ethernet physical layer chip, and Ethernet equipment. Applicable to data processing at a transmit end, the method includes: performing line coding on data from a media access control layer, so as to obtain serial data code blocks; performing forward error correction FEC coding on the serial data code blocks, so as to obtain FEC frames, which specifically includes: inserting Y check bits every X consecutive data bits, where the Y check bits are generated when FEC coding is performed on the X consecutive data bits; and distributing, at a distribution granularity of a bits, the FEC frames successively to N virtual channels, where a and N are both positive integers, and a is less than a quantity of bits included in one FEC frame.

Abstract translation: 本发明的实施例公开了以太网数据处理方法，以太网物理层芯片和以太网设备。 适用于发送端的数据处理，该方法包括：对来自媒体接入控制层的数据进行线路编码，以获得串行数据码块; 对串行数据代码块执行前向纠错FEC编码，以获得FEC帧，具体包括：每X个连续数据位插入Y个校验位，其中在对X连续执行FEC编码时生成Y个校验位 数据位; 并且以FEC的分布粒度分配FEC帧连续到N个虚拟信道，其中a和N都是正整数，并且a小于一个FEC帧中包括的比特量。