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11. 发明授权

US5444672A Time-keeping radio display pager precisely calibrated to local standard time 失效
标题翻译：计时无线显示寻呼机精确校准到当地标准时间
公开(公告)号：US5444672A
公开(公告)日：1995-08-22
申请号：US219463
申请日：1994-03-29
申请人： Masayuki Kushita
发明人： Masayuki Kushita
IPC分类号： H04L7/00 , H04W84/02 , H04W88/02 , G04G7/02
CPC分类号： H04W88/022 , G04R20/18
摘要： A radio display pager receives a series of frames from a paging station synchronized to the seconds of the local standard time. Each frame contains a frame synchronizing signal and a frame position signal indicating the position of the frame within the series, each of the frames being synchronized with a local standard time of the paging station. A frame counter increments a count value in synchronism with the reception of each frame synchronizing signal and produces an output when the count value reaches a predetermined value. The frame counter is reset to an initial value in response to the reception of a predetermined frame position signal which occurs at 1-minute intervals. A time-keeping circuit counts locally generated clock pulses to display the time of day on a display unit. The time-keeping circuit is responsive to the output of the frame counter for calibrating the time of day to the local standard time.
摘要翻译：无线显示寻呼机从与本地标准时间的秒同步的寻呼台接收一系列帧。每个帧包含帧同步信号和指示该系列内的帧的位置的帧位置信号，每个帧与寻呼站的本地标准时间同步。帧计数器与每个帧同步信号的接收同步地增加计数值，并且当计数值达到预定值时产生输出。响应于接收到以1分钟间隔发生的预定帧位置信号，帧计数器被重置为初始值。计时电路对本地产生的时钟脉冲进行计数，以显示显示单元上的时间。时间保持电路响应于帧计数器的输出，用于将时间校准到本地标准时间。

12. 发明授权

US4234958A Radio synchronized time-keeping apparatus and method 失效
标题翻译：无线同步计时装置及方法
公开(公告)号：US4234958A
公开(公告)日：1980-11-18
申请号：US807011
申请日：1977-06-16
申请人： William F. Pipes , Roy V. Millsap , Richard W. McClure , Harrison G. Hooper
发明人： William F. Pipes , Roy V. Millsap , Richard W. McClure , Harrison G. Hooper
IPC分类号： G04G7/02 , H03K1/17
CPC分类号： G04R40/00
摘要： A synchronizer comprised of a combination of integrated circuits including logic gates, latches and counters designed to interface with a master time controller to provide a means of linking the accuracy of the time controller to a time reference provided by the WWV signal broadcast by the National Bureau of Standards.
摘要翻译：一种同步器，包括集成电路的组合，包括逻辑门，锁存器和计数器，其设计成与主时间控制器接口，以提供将时间控制器的精度与由国家局广播的WWV信号提供的时间参考相关联的手段的标准。

13. 发明授权

US4014166A Satellite controlled digital clock system 失效
标题翻译：卫星数字时钟系统
公开(公告)号：US4014166A
公开(公告)日：1977-03-29
申请号：US657918
申请日：1976-02-13
申请人： Joseph V. Cateora , Dicky D. Davis , D. Wayne Hanson
发明人： Joseph V. Cateora , Dicky D. Davis , D. Wayne Hanson
IPC分类号： G04C13/00 , G04G7/02 , G04C13/08 , H04B7/00
CPC分类号： G04R40/02 , G04R20/06
摘要： A method and apparatus are provided for maintaining and correcting a time ference in a satellite controlled digital clock system. A time code message including time-of-year information and satellite position information is transmitted in a data stream from a transmitter on earth to a satellite orbiting the earth to be relayed back to receivers located around the world. The data is transmitted at a precise data rate. According to the invention, a local clock oscillator is phase locked with the precise data rate, thereby providing the clock system with time-of-year information by counting the pulses produced by the local oscillator. At the same time, the digital clock system assembles the time code message from the received data stream and compares the message with the time accumulated by counting the pulses produced by the oscillator. After a predetermined number of errors are detected by such comparisons, the clock system resets itself to coincide with the received time code message. If transmission of the time code message is interrupted, the clock continues counting pulses produced by the local oscillator and thereby continues keeping time undisturbed. In a preferred embodiment, the digital clock system is implemented with a firmware programmed micro-computer and the time-of-year and satellite position information is displayed on light emitting diode digital displays.
摘要翻译：提供了一种用于在卫星控制数字时钟系统中维持和校正时间基准的方法和装置。包括时间信息和卫星位置信息的时间码消息在数据流中从地球上的发射机发射到绕地球运行的卫星，以被传送回世界各地的接收机。以精确的数据速率传输数据。根据本发明，本地时钟振荡器以精确的数据速率锁相，从而通过对本地振荡器产生的脉冲进行计数来为时钟系统提供时间信息。同时，数字时钟系统从接收到的数据流中组合时间码消息，并将消息与通过对由振荡器产生的脉冲进行计数而累积的时间进行比较。在通过这样的比较检测到预定数量的错误之后，时钟系统重置自身以与接收到的时间码消息一致。如果时间码消息的传输中断，则时钟继续对本地振荡器产生的脉冲进行计数，从而继续保持时间不受干扰。在优选实施例中，数字时钟系统由固件编程的微型计算机实现，并且时间和卫星位置信息被显示在发光二极管数字显示器上。

14. 发明授权

US3787665A Means for synchronizing remotely positioned timing devices 失效
标题翻译：用于同步远程定位的时序设备的方法
公开(公告)号：US3787665A
公开(公告)日：1974-01-22
申请号：US3787665D
申请日：1972-07-17
申请人： MC DONNELL DOUGLAS CORP
发明人： WATSON F , MOHR J
IPC分类号： G01S11/08 , G04G7/02 , H04B7/185 , G06F15/48
CPC分类号： G01S11/08 , G04R40/06 , H04B7/18502
摘要： Improvements in means for synchronizing remotely positioned timing devices including means to provide multiple error correction factors which are functions of the time error or time difference between the time keeping means in spaced systems or units being synchronized, said means being particularly useful in group synchronization by providing time convergence to a common synchronizing base. The use of multiple error correction factors restricts or limits relative timing errors between systems or units especially when in the process of changing from one reference time base location to another, and it provides means to bring timing devices at remote locations into closer synchronization on a continuing basis. The present means provide correction factors which are directly proportional to the synchronizing error including those cases where the correction versus error proportion is other than in a one-to-one relationship. This is especially advantageous in situations where there is a ground or master station responsibility that is shared on a rotating, shifting or location basis with other stations that are or may be synchronized but on a different time schedule or time base. Partial corrections in such situations can cause convergence of the synchronizing operation on a global or regional basis to a common time synchronization base and on a continuous and uninterrupted basis. The present means are also able to provide time synchronization of remotely located timing devices or units with or without the need to designate specific units or stations, or sets of units or stations, as masters and slaves. This means that the need for master or central accurately synchronized time references or stations which has characterized prior art time synchronized systems is no longer necessary.
摘要翻译：包括用于同步远程定位设备的装置的改进，包括提供多个误差校正因子的装置，所述多个误差校正因子是间隔系统中的时间保持装置或同步的单位之间的时间差异的功能，所述装置在组同步中特别有用，时间收敛到共同的同步基地。多个误差校正因子的使用限制或限制系统或单元之间的相对定时误差，特别是在从一个参考时基位置改变到另一参考时基位置的过程中，并且其提供了使远程位置的定时设备在持续基础。本装置提供与同步误差成正比的校正因子，其中校正与误差比例不同于一对一关系。这在具有基于或可以同步的其他站但在不同的时间表或时基上的基于旋转，移位或位置共享的地面或主站责任的情况下是特别有利的。在这种情况下的部分校正可导致在全球或区域基础上的同步操作与公共时间同步基础并且在连续和不间断的基础上的收敛。当前装置还能够提供或不需要指定特定单元或站或单元或站的集合作为主站和从站的远程定位设备或单元的时间同步。这意味着不再需要对现有技术的时间同步系统表征的主或精确同步的时间基准或站的需要。

15. 发明授权

US3769589A Rate aided ranging and time dissemination receiver 失效
标题翻译：速率辅助范围和时间传播接收器
公开(公告)号：US3769589A
公开(公告)日：1973-10-30
申请号：US3769589D
申请日：1971-11-16
申请人： RCA CORP
发明人： BUNTSCHUH R , ROULAND H
IPC分类号： G01S11/08 , G04G7/02 , H03L7/22 , H04B1/16
CPC分类号： H03L7/22 , G01S11/08 , G04G7/02
摘要： A receiver is described for processing tone ranging signals from a time dissemination satellite such as TIMATION II. The receiver derives either receiver-station time (clock synchronization) or position location of the receiver-station with respect to the satellite with significant accuracy. The receiver generates a set of range tones as duplicates of those received from a satellite. They are developed as frequency coherent from a phase lock loop synchronized to the signal carrier frequency. A second loop, having a frequency synthesizer locked to the carrier loop, a mixer, a narrow band amplifier and a phase detector mix the locally generated range tones with a local oscillator signal which is frequency coherent with the carrier. This mixer output is then mixed with the receiver modulation to null out error between the received and local range tones. An output signal consisting of the lowest range tone signal is representative of the tone modulation from the satellite. Coherent processing by mixing at the front-end of the detector amplifier in the preferred embodiment allows for automatic calibration of non-zero receiver propagation delays, and the use of narrow band IF amplifiers thereby effecting high levels of unwanted signal rejection. The use of synthesized range tones allows for continuous time-delay or ranging measurements even though the satellite range tones are not continuously transmitted.

16. 发明授权

US3541552A Synchronization system 失效
公开(公告)号：US3541552A
公开(公告)日：1970-11-17
申请号：US3541552D
申请日：1968-07-26
申请人： US NAVY
发明人： CARLSON WAYLAND A
IPC分类号： G04G7/02 , H04L7/00 , H04B7/00 , G04C13/02
CPC分类号： H04L7/00 , G04R20/00

17. 发明授权

US3521279A Mobile clock synchronization techniques 失效
标题翻译：移动时钟同步技术
公开(公告)号：US3521279A
公开(公告)日：1970-07-21
申请号：US3521279D
申请日：1968-08-20
申请人： SIERRA RESEARCH CORP
发明人： MICHNIK LEWIS
IPC分类号： G01S11/08 , G01S19/09 , G01S19/27 , G04G7/02 , G08G5/04 , G01S9/56
CPC分类号： G01S11/08 , G04R40/06

18. 发明授权

US3380049A Method of resolving clock synchronization error and means therefor 失效
标题翻译：解决时钟同步误差的方法及其手段
公开(公告)号：US3380049A
公开(公告)日：1968-04-23
申请号：US64045567
申请日：1967-05-17
申请人： JAMES E. WEBB , NASA USA
发明人： WEBB JAMES E
IPC分类号： G01S11/02 , G01S19/05 , G01S19/11 , G04G7/02 , H04B7/185
CPC分类号： H04B7/185 , G01S11/02 , G04G7/02

19. 发明授权

US3250896A Synchronizing means for remotely positioned timing devices 失效
标题翻译：用于远程定位设备的同步装置
公开(公告)号：US3250896A
公开(公告)日：1966-05-10
申请号：US18783262
申请日：1962-04-16
申请人： MCDONNELL AIRCRAFT CORP
发明人： PERKINSON ROBERT E , VON FANGE WILBUR H , BORROK MARTIN J
IPC分类号： G01S11/08 , G04G7/02
CPC分类号： G01S11/08 , G04R40/06

20. 发明申请

US20130272099A1 ELECTRONIC DEVICE, TIME CALIBRATION SYSTEM AND METHOD 审中-公开
标题翻译：电子设备，时间校准系统和方法
公开(公告)号：US20130272099A1
公开(公告)日：2013-10-17
申请号：US13660972
申请日：2012-10-25
申请人： FENG-CHI YANG
发明人： FENG-CHI YANG
IPC分类号： G04G7/00 , G04G7/02
CPC分类号： G04R40/00 , G04R20/14 , G04R20/26
摘要： A time calibration method includes steps: establishing a connection between the electronic device and the communication device. A trigger signal is produced to the communication device in response to the operation of the user triggering the communication device to update the time of the communication device. The time provided by the electronic device is obtained and compared to the time provided by the communication device. The time of the electronic device is calibrated according to the updated time of the communication device if the difference between the time provided by the electronic device and the updated time provided by the communication device is greater than a predetermined value.
摘要翻译：时间校准方法包括步骤：建立电子设备与通信设备之间的连接。响应于触发通信设备的用户的操作来更新通信设备的时间，向通信设备产生触发信号。获得由电子设备提供的时间并与通信设备提供的时间进行比较。如果由电子设备提供的时间与由通信设备提供的更新时间之间的差异大于预定值，则根据通信设备的更新时间来校准电子设备的时间。

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