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公开(公告)号：US20240192383A1
公开(公告)日：2024-06-13
申请号：US18078509
申请日：2022-12-09
Applicant: Apollo Autonomous Driving USA LLC
Inventor： Qiang WANG
CPC classification number: G01S19/37 , B60W60/00 , G04R20/04 , B60W2556/50
Abstract: In one embodiment, a system receives a first synchronization signal from an electronics receiver, the electronics receiver receives one or more signals from one or more communication satellites of a navigation satellite system. The system receives a second synchronization signal from the electronics receiver. The system generates a data stream based on the first and second synchronization signals. the system transmits the data stream to one or more subsystems or sensor modules of an autonomous driving vehicle (ADV), wherein the data stream is used for localization and time synchronization for the one or more subsystems or sensor modules.
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公开(公告)号：US20240176307A1
公开(公告)日：2024-05-30
申请号：US18521433
申请日：2023-11-28
Applicant: CASIO COMPUTER CO., LTD.
Inventor： Yuuki OSHITA
IPC: G04R20/04
CPC classification number: G04R20/04
Abstract: The present disclosure is provided to correctly adjust the leap second information while avoiding the increase in positioning time. Provided is a satellite radio wave receiving device including: a receiver that performs an acquisition operation of receiving a transmitted radio wave from a positioning satellite and acquiring information contained in the transmitted radio wave; one or more processors; and one or more memories in which leap second information related to a leap second adjustment may be stored, wherein the receiver retains the leap second information last acquired by the acquisition operation and wherein the one or more processors perform the following processes according to instructions stored in the one or more memories: activating the receiver in at least two modes including a first mode in which the acquisition operation is performed for continuous positioning; in the case of activating the receiver in the first mode, starting the acquisition operation without erasing the leap second information that the receiver retains and acquiring the leap second information that the receiver retains after the end of the first mode operation, and in the case where the acquired leap second information for this time is determined to be newer than the leap second information stored in the one or more memories, storing the leap second information for this time in the one or more memories; and performing a leap second adjustment for the counted current date and time, based on the leap second information lastly stored in the one or more memories.
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33.发明公开公开(公告)号：US20230367727A1
公开(公告)日：2023-11-16
申请号：US17662773
申请日：2022-05-10
Applicant: Juniper Networks, Inc.
Inventor： John B. KENNEY , Kamatchi S. GOPALAKRISHNAN , Jack W. KOHN , Sushma B. BAVACHE , Amit VERMA , Rafik P.
CPC classification number: G06F13/382 , G04R20/04 , G06F13/4282 , G06F2213/0042
Abstract: In some implementations, a device may receive, via a universal serial bus (USB) interface, configuration information and a supply of power from a network device. The device may receive, via an antenna that is external to the device, a first signal indicating timing information. The device may generate, based on the first signal, a second signal and a third signal, wherein the second signal comprises a one pulse per second signal and the third signal comprises a ten-megahertz signal. The device may provide, to the network device, the second signal and the third signal. The device may receive, via an input port, a clock signal to provide an extended holdover functionality to the network device.
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公开(公告)号：US11604439B2
公开(公告)日：2023-03-14
申请号：US17135484
申请日：2020-12-28
Applicant: Waymo LLC
Inventor： Axel Simon , Zhuyuan Liu
IPC: G04R20/04
Abstract: Example embodiments relate to GNSS time synchronization in redundant systems. A redundant system configured with two subsystems may initially synchronize clocks from both subsystems to GNSS time from a GNSS receiver. The synchronization of the first subsystem's clock may involve using a first communication link that enables communication between the first subsystem and the GNSS receiver while the synchronization of the second subsystem's clock may involve using both the first communication link and a second communication link that enables communication between the subsystems. The redundant system may then synchronize the first subsystem's clock to the second subsystem's clock while the second subsystem's clock is still synchronized to GNSS time from the GNSS receiver based on timepulses traversing a pair of wires that connect the subsystems and the GNSS receiver.
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公开(公告)号：US20220150859A1
公开(公告)日：2022-05-12
申请号：US17575760
申请日：2022-01-14
Applicant: Skylo Technologies, Inc.
Inventor： Meghna Agrawal , Andrew Nuttall
Abstract: Apparatuses, methods, and systems for estimating a propagation time between a first node and a second node of a wireless network are disclosed. One method includes determining a first time propagation delay between the first node and the second node based on location of the second node and the kinematic information of a third node, receiving, by the second node, a packet from the first node containing a timestamp representing a transmit time of the packet from the first node, determining a second time propagation delay between the first node and the second node based upon the difference between the reception time of the packet, and the first time stamp included within the packet, transmitting, by a second node a TX packet after a holding delay based on the first propagation delay and the second propagation delay.
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Patent Agency Ranking
公开(公告)号：US20220026858A1
公开(公告)日：2022-01-27
申请号：US17385019
申请日：2021-07-26
Applicant: Seiko Epson Corporation
Inventor： Teruhiko FUJISAWA
Abstract: An electronic watch includes an annular antenna base material including an upper surface, an outer circumferential surface, a bottom surface, and an inner circumferential surface, a first antenna element provided at the outer circumferential surface, and a second antenna element provided at the inner circumferential surface, wherein at least one of the first antenna element and the second antenna element includes a feed terminal coupled to a feed portion, and a distance between the first antenna element and the second antenna element is greater than 0 mm and less than or equal to 2 mm.
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公开(公告)号：US10890666B2
公开(公告)日：2021-01-12
申请号：US16135229
申请日：2018-09-19
Applicant: CASIO COMPUTER CO., LTD.
Inventor： Tatsuya Sekitsuka , Takeshi Matsue
Abstract: A satellite radiowave receiving device includes a receiver performing a receiving operation of radiowaves transmitted from a positioning satellite and a processor controlling a positioning operation. The processor performs the positioning operation within at least a predetermined maximum positioning interval from a last positioning operation using preliminarily obtained date and time information and valid positional information on the positioning satellite to obtain a current position of the satellite radiowave receiving device and date and time information. The processor causes the receiver to perform the receiving operation within at least a predetermined date and time updating interval shorter than the predetermined maximum positioning interval from a last time when date and time information is obtained from radiowaves transmitted from a positioning satellite to obtain date and time information without the positioning operation.
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公开(公告)号：US10739732B2
公开(公告)日：2020-08-11
申请号：US16175944
申请日：2018-10-31
Applicant: CASIO COMPUTER CO., LTD.
Inventor： Hideo Tasaka
IPC: H01Q1/27 , G04R60/10 , G04R60/12 , H01Q9/04 , G04R20/04 , H01Q1/24 , H01Q7/00 , G04G21/04 , H01Q1/44 , H01Q1/38 , G04G17/04
Abstract: An antenna device including an antenna which is made of metal and receives radio wave, a substrate on which a first electrode and a second electrode are arranged such that one of the first electrode and the second electrode is plurally arranged, and are positioned on circumference of a circle centering on center of the antenna, and a connection section which connects a connection target first electrode to the antenna and connects a connection target second electrode to the antenna.
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公开(公告)号：US10663598B2
公开(公告)日：2020-05-26
申请号：US15988580
申请日：2018-05-24
Applicant: CASIO COMPUTER CO., LTD.
Inventor： Takeshi Matsue , Tatsuya Sekitsuka
Abstract: Provided is an electronic device includes an oscillator circuit that outputs a clock signal of predetermined frequency, a clock circuit that counts date and time in accordance with input of the clock signal, a temperature sensor that measures a temperature relating to a change of the predetermined frequency, a receiver that receives a radio wave from a positioning satellite, and a first processor and/or a second processor. The first processor and/or the second processor estimates an amount of time count difference in date and time counted by the clock circuit on the basis of a history of temperatures measured by the temperature sensor, and combines date and time counted by the clock circuit, the estimated amount of time count difference, and part of date-and-time information obtained from a radio wave received by the receiver to identify current date and time.
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公开(公告)号：US10649097B2
公开(公告)日：2020-05-12
申请号：US15460670
申请日：2017-03-16
Applicant: Seiko Epson Corporation
Inventor： Toshiyuki Nozawa
Abstract: An electronic timepiece includes a pointing hand, a distance display hand, a magnetic sensor, a GPS receiver receiving GPS time information from a GPS satellite, a storage unit storing ephemeris data of the GPS satellite, and a control unit generating positional information of the electronic timepiece using the GPS time information received by the GPS receiver and the ephemeris data stored in the storage unit and executing navigation using the pointing hand and the distance display hand based on the positional information, an output of the magnetic sensor, and destination site information. When the ephemeris data is stored in the storage unit and then a first predetermined time equal to or less than a valid period of the ephemeris data elapses, the control unit receives the ephemeris data using the GPS receiver and updates the ephemeris data stored in the storage unit to ephemeris data received using the GPS receiver.
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