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1.发明授权Multipoint simultaneous measurement method and multipoint simultaneous measurement system in electric power station, and internal clock used therefor 有权电站多点同时测量方法和多点同时测量系统，以及用于其的内部时钟公开(公告)号：US09459591B2
公开(公告)日：2016-10-04
申请号：US13981805
申请日：2012-05-28
申请人： Tatsuya Chiba , Masaki Sato , Yoichi Yanagisawa
发明人： Tatsuya Chiba , Masaki Sato , Yoichi Yanagisawa
摘要： A multipoint simultaneous measurement method and a multipoint simultaneous measurement system in an electric power station and an internal clock used therefor, capable of performing measurement at the correct time even at a place in the electric power station where GPS radio waves cannot be received, and of securing simultaneity with high accuracy and with ease without connecting a plurality of measurement points via a cable and the like.
摘要翻译： 电站中的多点同时测量方法和多点同时测量系统及其使用的内部时钟，即使在无法接收GPS无线电波的电站中也能够在正确的时间进行测量，以及 通过电缆等连接多个测量点，可以高精度和轻松地确保同时性。
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公开(公告)号：US20050094496A1
公开(公告)日：2005-05-05
申请号：US10938120
申请日：2004-09-10
申请人： Kenji Ozawa
发明人： Kenji Ozawa
摘要： A wave correction clock of the present invention receives a wave signal including time information based on information defined by a pulse width of a rectangular pulse output at a predetermined period, and a period measuring section measures a signal period TRn of the rectangular pulse. A time difference measuring section obtains a time difference between the signal period TRn and an internal reference period TB where the signal period TRn is within a predetermined range, and a time difference determining section corrects generation timing of a reference pulse at the internal reference period TB from an average value of time differences obtained when the rectangular pulse where the signal period TRn is within a predetermined range is detected multiple times.
摘要翻译： 本发明的波形校正时钟基于由预定周期输出的矩形脉冲的脉冲宽度定义的信息，接收包括时间信息的波形信号，周期测量部分测量矩形脉冲的信号周期TRn。 时间差测量部分获得信号周期TRn和信号周期TRn在预定范围内的内部参考周期TB之间的时间差，时间差确定部分校正内部参考周期TB的参考脉冲的产生定时 从信号周期TRn在预定范围内的矩形脉冲获得的时间差的平均值被检测多次。
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公开(公告)号：US06847691B2
公开(公告)日：2005-01-25
申请号：US09782153
申请日：2001-02-14
IPC分类号： G04G5/00 , G01S19/05 , G01S19/09 , G01S19/11 , G01S19/14 , G01S19/46 , G04G7/00 , G04R20/00 , G04R20/02 , G04R20/26 , G04R40/06 , H04B7/155 , H04L7/00
摘要： A time synchronization system comprises a GPS (Global Positioning System) receiver for receiving a time signal from a Global Positioning System (GPS), and outputting a UTC (Universal Time Coordinated) synchronization reference signal synchronizing with UTC and a UTC synchronization absolute time signal, and a time signal distributor for generating a reference time signal synchronizing with UTC from the synchronization reference signal and the absolute time signal, and transmits this reference time signal in distribution to a plurality of distributed control oriented terminal devices. The time synchronization between the plurality of distributed control oriented terminal devices can be thereby taken.
摘要翻译： 时间同步系统包括用于从全球定位系统（GPS）接收时间信号并输出与UTC和UTC同步绝对时间信号同步的UTC（世界时间协调）同步参考信号的GPS（全球定位系统）接收机， 以及时间信号分配器，用于从同步参考信号和绝对时间信号产生与UTC同步的参考时间信号，并将该参考时间信号发送到多个分布式控制定向终端装置。 由此可以实现多个分布式控制终端装置之间的时间同步。
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公开(公告)号：US20210157279A1
公开(公告)日：2021-05-27
申请号：US16953437
申请日：2020-11-20
发明人： Hidenori NAKAMURA
摘要： A time correction method is a method performed using wireless communication between an electronic apparatus that includes a first wireless communication unit, and an electronic timepiece that includes a second wireless communication unit. The time correction method includes the electronic timepiece starting wireless reception, the electronic apparatus generating an advertising signal including time data held by the electronic apparatus and starting transmission of the advertising signal, and the electronic timepiece receiving the advertising signal. The electronic timepiece updates time data held by the electronic timepiece based on the time data included in the received advertising signal.
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公开(公告)号：US10466363B2
公开(公告)日：2019-11-05
申请号：US15410080
申请日：2017-01-19
发明人： Michael A. Lombardi
摘要： A disciplined clock provides a disciplined time and a disciplined frequency synchronous with a reference clock. The disciplined clock includes: a time receiver to: receive a common view signal from the common view clock; and produce a receiver timing signal; a local clock to: receive a frequency correction; and produce a local timing signal; a time interval counter to: receive the receiver timing signal from the time receiver; receive the local timing signal from the lock clock; and determine a time difference between the receiver timing signal and the local timing signal; and a controller to: receive the time difference from the time interval counter; and communicate the frequency correction, based on the time difference, to the local clock.
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公开(公告)号：US09681408B2
公开(公告)日：2017-06-13
申请号：US14700086
申请日：2015-04-29
申请人： u-blox AG
CPC分类号： H04W56/0015 , G01S5/02 , G01S19/23 , G01S19/246 , G01S19/42 , G04R40/06
摘要： A method and apparatus for determining a drift between a local clock of a movable device and a reference clock that is used by one or more reference devices. The local clock may be calibrated at a calibration location and then the movable device may be moved to an operating location that is different from the calibration location. The drift is determined by observing one or more signals transmitted by the respective one or more reference devices, when the device is at the calibration location and when it is at the operating location. These observations are used together with a model of the signals to determine the drift.
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公开(公告)号：US3530663A
公开(公告)日：1970-09-29
申请号：US3530663D
申请日：1968-05-16
申请人： PATEK PHILIPPE SA
发明人： MARTI RAYMOND
CPC分类号： G04R40/06
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公开(公告)号：US11599067B2
公开(公告)日：2023-03-07
申请号：US16798568
申请日：2020-02-24
发明人： Eiji Kinoshita
摘要： An electronic timepiece includes a communication unit receiving identification information for identifying a radio station from the radio station, a storage unit storing a database having, as a record, the identification information and time difference information indicating a time difference associated with the identification information, a timekeeping unit in which a set time difference being a time difference with respect to a reference time is set, a first time difference correction unit correcting the set time difference to the time difference information associated with the identification information received by the communication unit, an operation unit accepting user operation, a second time difference correction unit correcting the set time difference according to the operation, and an update processing unit updating the database by changing the time difference information to the set time difference corrected by the second time difference correction unit.
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公开(公告)号：US20200272109A1
公开(公告)日：2020-08-27
申请号：US16798568
申请日：2020-02-24
发明人： Eiji KINOSHITA
摘要： An electronic timepiece includes a communication unit receiving identification information for identifying a radio station from the radio station, a storage unit storing a database having, as a record, the identification information and time difference information indicating a time difference associated with the identification information, a timekeeping unit in which a set time difference being a time difference with respect to a reference time is set, a first time difference correction unit correcting the set time difference to the time difference information associated with the identification information received by the communication unit, an operation unit accepting user operation, a second time difference correction unit correcting the set time difference according to the operation, and an update processing unit updating the database by changing the time difference information to the set time difference corrected by the second time difference correction unit.
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公开(公告)号：US10587704B2
公开(公告)日：2020-03-10
申请号：US14685858
申请日：2015-04-14
IPC分类号： H04L29/08 , G01S19/06 , G01S19/07 , G06F21/62 , G06F1/04 , H04J3/06 , G04R20/02 , G06F1/12 , G04R40/06 , H04L12/58
摘要： In an approach for identifying a location of a mobile device a processor receives a first set of Global Positioning System (GPS) data at a time, wherein the time is specified by the mobile device. A processor synchronizes the time with Coordinated Universal Time (UTC). A processor retrieves offset values, wherein the offset values comprise one or more values to adjust one or more location coordinates based on the synchronized time, and wherein the offset values are determined by comparing a known set of location coordinates to a set of location coordinates calculated using another set of GPS data. A processor calculates location coordinates of the mobile device using the first set of GPS data and the offset values. A processor stores at least the location coordinates of the mobile device and the synchronized time.
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