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1. 发明申请

US20230063308A1 ELECTRONIC TIMEPIECE AND INFORMATION ACQUISITION METHOD 有权
公开(公告)号：US20230063308A1
公开(公告)日：2023-03-02
申请号：US17983514
申请日：2022-11-09
申请人： CASIO COMPUTER CO., LTD.
发明人： Yuki OSHITA , Kazuho KYOU
IPC分类号： G04G21/04 , G01S19/14 , G04R20/02
摘要： An electronic timepiece includes a radio wave receiver which receives radio waves from a positioning satellite, a communicator which performs communication with an external device, a storage which stores predicted positional information of the positioning satellite acquired from a source other than the positioning satellite, and a processor configured to update the predicted positional information stored in the storage by causing the communicator to acquire the predicted positional information from the external device at or after a specified timing corresponding to an update period of the predicted positional information, the specified timing being a timing before an end of an effective period of the stored predicted positional information, and the update period being determined in advance in the external device.

2. 发明授权

US11592787B2 Electronic timepiece and information acquisition method 有权
公开(公告)号：US11592787B2
公开(公告)日：2023-02-28
申请号：US16297641
申请日：2019-03-09
申请人： CASIO COMPUTER CO., LTD.
发明人： Yuki Oshita , Kazuho Kyou
IPC分类号： G04G21/04 , G01S19/14 , G04R20/02
摘要： An electronic timepiece including: a radio wave receiver which receives radio waves from a positioning satellite; a communicator which performs communication with an external device; a storage which stores predicted positional information of the positioning satellite acquired from other than the positioning satellite; and a processor, wherein the processor updates the predicted positional information stored in the storage by causing the communicator to acquire the predicted positional information from the external device at or after a predetermined timing corresponding to an update period of the predicted positional information before end of an effective period of the stored predicted positional information, the update period being determined in advance in the external device.

3. 发明申请

US20230032067A1 METHOD AND APPARATUS FOR ACQUISITION OF RELIABLE TIME IN A WIRELESS NETWORK 有权
公开(公告)号：US20230032067A1
公开(公告)日：2023-02-02
申请号：US17386325
申请日：2021-07-27
申请人： QUALCOMM Incorporated
发明人： Stephen William Edge
IPC分类号： H04W12/06 , H04W56/00 , H04W24/08 , H04W74/08 , H04W4/06 , H04L9/32 , H04L9/30 , H04W12/03 , H04W12/121 , G04R20/02 , G04R20/14
摘要： Accurate and reliable time is acquired by a user equipment (UE) from a base station in a wireless network. The base station may obtain the time, e.g., UTC time or a GNSS time, and ciphers at least a portion of the time before broadcasting the time. The UE determines a propagation delay between the UE and the base station based on a timing advance, known locations of the UE and the base station, or a measured round trip propagation time (RTT) between the UE and the base station. A corrected time can be determined based on the time received from the base station and the propagation delay. A digital signature included with the time broadcast by the base station increases reliability. Spoofing of the broadcast time by an attacking device may be detected by the UE based on the propagation delay being outside an expected range.

4. 发明申请

US20220365490A1 METHOD FOR ADJUSTING A CLOCK ON BOARD A MOTOR VEHICLE AND ASSOCIATED ADJUSTING DEVICE 有权
公开(公告)号：US20220365490A1
公开(公告)日：2022-11-17
申请号：US17765604
申请日：2020-10-29
申请人： Continental Automotive GmbH
发明人： Christophe Mestrie , Sébastien Chanal , Bertrand Venzal , Stefan Hammes
IPC分类号： G04R40/06 , G04R20/02
摘要： A method for adjusting a clock on board a motor vehicle, the clock providing an actual time for functions of the vehicle, the vehicle connected via wireless communication to a data server, the method including: the server transmitting a sequence of consecutive actual-time values, separated from one another by a fixed time interval; the vehicle receiving the actual-time values shifted by an unknown and variable time of flight between transmission and reception; for each received actual-time value: calculating a difference between an actual-time value received at a given instant and an actual-time value received at a previous instant; calculating a discrepancy between the calculated difference and the fixed time interval; calculating a cumulative disparity, consisting in summing the discrepancy calculated for a time value received at one instant and a time value received at the previous instant; determining the actual time for adjusting the on-board clock according to the disparity.

5. 发明申请

US20220260697A1 Multistatic Radar System and Method of Operation Thereof for Detecting and Tracking Moving Targets, in Particular Unmanned Aerial Vehicles 有权
公开(公告)号：US20220260697A1
公开(公告)日：2022-08-18
申请号：US17617543
申请日：2020-06-04
申请人： GPM 3 S.R.L.
发明人： Antonio Saitto
IPC分类号： G01S13/00 , G01S13/86 , G01S13/72 , G01S13/92 , G04R20/02
摘要： A multistatic radar system is provided for detecting and tracking targets moving in a surveillance area that includes: a radar transmitter and a plurality of radar receivers located in different positions in the surveillance area and processing means. The radar transmitter and the radar receivers each include a GNSS receiver configured to receive GNSS signals. The radar transmitter and the radar receivers are configured to obtain a GNSS-based time reference based on the GNSS signals received by the respective GNSS receiver, wherein the GNSS-based time reference is common to the radar transmitter and the radar receivers. The radar transmitter is configured to transmit radar signals according to a predefined transmission time and frequency pattern and on the basis of the GNSS-based time reference. The radar receivers are configured to receive radar echoes from one or more targets moving in the surveillance area and illuminated by the radar signals transmitted by the radar transmitter. Each radar receiver is configured to determine, for each radar echo received by the radar receiver from a respective target, a corresponding distance-related information item based on the predefined transmission time and frequency pattern, the GNSS-based time reference and a respective reception time of the radar echo, wherein the corresponding distance-related information item is related to an overall distance from the radar transmitter to the respective target and from the respective target to the radar receiver, and a corresponding Doppler frequency of the radar echo based on the predefined transmission time and frequency pattern and the GNSS-based time reference, and to provide the processing means with data indicative of the distance-related information items and the Doppler frequencies determined by the radar receiver, and reference times associated with the distance-related information items and the Doppler frequencies, wherein the reference times are referenced to the GNSS-based time reference.

6. 发明授权

US11265139B2 Method for transmitting GPS information of optical communication device 有权
公开(公告)号：US11265139B2
公开(公告)日：2022-03-01
申请号：US17077489
申请日：2020-10-22
申请人： SOLiD, INC.
发明人： Bum Soo Park
IPC分类号： H04L7/00 , G04R20/02 , H04B10/40 , H04B10/50
摘要： An optical communication device including a GPS receiver receiving and outputting a GPS signal from a satellite; a main controller configured to generate and output synchronization data based on the GPS signal; and an optical transceiver configured to generate an optical signal by superposing input payload data and the synchronization data, and to output the optical signal, wherein a first communication channel corresponding to the payload data and a second communication channel corresponding to the synchronization data are different communication channels. According to embodiments, GPS information for synchronization together with payload data, which is information to be transmitted, may be efficiently transmitted between optical communication devices located in remote locations without separate wavelength allocation and connection of an optical cable, by using an auxiliary management and control channel (AMCC).

7. 发明授权

US11150353B2 Time synchronization device, and method and program therefor 有权
公开(公告)号：US11150353B2
公开(公告)日：2021-10-19
申请号：US15543333
申请日：2016-02-12
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Keisuke Nishi , Youichi Fukada , Akihiro Morita , Seiji Yoshida , Takashi Hirose
IPC分类号： G04G3/02 , G01S19/14 , G01S19/34 , G06F1/14 , G04R20/16 , G04R20/04 , G04R20/06 , G01S19/39 , G04R20/02 , G04G5/00 , G04G7/00
摘要： A time synchronization method that is capable of selecting whether synchronization, by a timepiece unit that generates a time signal synchronized with a standard time and outputs it to an exterior, with the time is performed by time information obtained by receiving a radio wave including information relating to the time, or is performed by means of a holdover performed using a clock signal from an internal or external clock source. A schedule having a first time period in which the above-mentioned time information is used, and a second time period by means of the holdover is determined according to temporal reception characteristics of the radio wave at a reception location of the radio wave, and according to the schedule, supplying the timepiece unit with the time information or supplying the timepiece unit with the clock signal from the internal or external clock source.

8. 发明申请

US20210200162A1 MULTI-INTERFACE GPS TIME SYNCHRONIZATION 有权
公开(公告)号：US20210200162A1
公开(公告)日：2021-07-01
申请号：US16732280
申请日：2019-12-31
申请人： Continental Automotive Systems, Inc.
发明人： Aaron Simon
IPC分类号： G04R20/02 , H04W56/00 , H04J3/06
摘要： A time synchronizer receives UTC (Coordinated Universal Time) time in serial+PPS (Pulse Per Second) format from a GPS (Global Positioning System) device and outputs timestamp data in multiple formats, including: CAN (Controller Area Network), Ethernet, gPTP (generic Precision Time Protocol), and serial+PPS. Multiple data sources receive timestamp data in the multiple formats and each provide data in a unified UTC time base to a sensor-fusion device. The unified UTC time base is based on the timestamp data in the multiple formats output by the time synchronizer. The time synchronizer may perform edge detection for a first transition of an internal clock signal following a transition of the PPS signal received from the GPS device. The internal clock signal may be asynchronous with the PPS signal received from the GPS device. The internal clock signal may have a frequency of 40 MHz.

9. 发明申请

US20210126767A1 METHOD FOR TRANSMITTING GPS INFORMATION OF OPTICAL COMMUNICATION DEVICE 有权
公开(公告)号：US20210126767A1
公开(公告)日：2021-04-29
申请号：US17077489
申请日：2020-10-22
申请人： SOLiD, INC.
发明人： Bum Soo PARK
IPC分类号： H04L7/00 , H04B10/50 , H04B10/40 , G04R20/02
摘要： An optical communication device including a GPS receiver receiving and outputting a GPS signal from a satellite; a main controller configured to generate and output synchronization data based on the GPS signal; and an optical transceiver configured to generate an optical signal by superposing input payload data and the synchronization data, and to output the optical signal, wherein a first communication channel corresponding to the payload data and a second communication channel corresponding to the synchronization data are different communication channels. According to embodiments, GPS information for synchronization together with payload data, which is information to be transmitted, may be efficiently transmitted between optical communication devices located in remote locations without separate wavelength allocation and connection of an optical cable, by using an auxiliary management and control channel (AMCC).

10. 发明授权

US10969225B2 Electronic timepiece 有权
公开(公告)号：US10969225B2
公开(公告)日：2021-04-06
申请号：US16225957
申请日：2018-12-19
申请人： Seiko Epson Corporation
发明人： Toshiyuki Nozawa
IPC分类号： G01C17/00 , G01C21/00 , G01C21/20 , G04R20/02 , G04B47/06 , G04G3/00 , G01C17/14
摘要： An electronic timepiece includes an indicating hand, a distance display hand, a GPS receiver that receives satellite signals transmitted from GPS satellites, a magnetic sensor, and a controller. The controller determines the direction to a destination on the basis of the satellite signals received by the GPS receiver, the output from the magnetic sensor, and destination information representing the position of the destination, determines the distance to the destination on the basis of the satellite signals and the destination information, causes the indicating hand to indicate the direction to the destination, and causes the distance display hand to display the distance to the destination.

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