公开(公告)号：US20180017945A1

公开(公告)日：2018-01-18

申请号：US15642621

申请日：2017-07-06

Applicant: Stryker Corporation

Inventor： Anuj K. Sidhu ,  Michael Joseph Hayes

IPC: G04G7/00 ,  A61G7/012 ,  A61G7/05 ,  G04G17/08

CPC classification number: G04G7/02 ,  A61G7/012 ,  A61G7/018 ,  A61G7/0516 ,  A61G7/0527 ,  A61G2203/20 ,  G04G17/08

Abstract: A patient support apparatus includes a frame, patient support surface, clock, transceiver, and controller. The transceiver communicates with a headwall and/or a local area network. The controller detects the occurrence of an event and sends a message to a server in communication with the local area network in response to the event. The controller updates its estimate of the local time based upon time data received from the server. The controller may also and/or additionally receive first and second time updates from two different sources. When received, the controller updates its estimate of local time based upon at least one of the following: (a) a comparison of its estimate of local time with the time data from the first source; and (b) a comparison of its estimate of local time with the time data received from the second source.

公开(公告)号：US09341716B2

公开(公告)日：2016-05-17

申请号：US11453791

申请日：2006-06-14

Applicant: Jari Syrjärinne ,  Harri Valio ,  Kimmo Alanen

Inventor： Jari Syrjärinne ,  Harri Valio ,  Kimmo Alanen

IPC: H04W24/00 ,  G01S19/05 ,  G01S19/03 ,  G01S19/23 ,  G01S19/25 ,  G04G5/00 ,  G04G7/00 ,  G04R20/02 ,  G04R20/18 ,  G04R20/06

CPC classification number: G01S19/05 ,  G01S19/03 ,  G01S19/23 ,  G01S19/235 ,  G01S19/256 ,  G04G5/002 ,  G04G7/02 ,  G04R20/02 ,  G04R20/06 ,  G04R20/18

Abstract: A system, apparatus and corresponding method by which to synchronize to a time reference a main module of a device—a main module such as global positioning system (GPS) receiver—using a cellular communication signal received by a cellular module also included in the device. To synchronize the main module to the reference time, the invention provides a method including the steps of: having the cellular module respond to the cellular communication signal by providing to a clock module of the main module a trigger pulse derived from the data component of the cellular communication signal, and also by providing to the main module information relating the trigger pulse to a universal time. The main module is then able to resolve a value for time based on the information relating the trigger pulse to a universal time and the trigger pulse.

Abstract translation: 一种系统，装置和相应的方法，通过该系统，装置和相应的方法，将与设备的主模块（诸如全球定位系统（GPS）接收机）等主模块同步的时间参考同步，所述主模块也使用由蜂窝模块接收的蜂窝通信信号， 。 为了将主模块同步到参考时间，本发明提供了一种方法，包括以下步骤：通过向主模块的时钟模块提供从该模块的数据分量导出的触发脉冲，使蜂窝模块响应于蜂窝通信信号 蜂窝通信信号，并且还通过向主模块提供与触发脉冲相关的信息到通用时间。 然后，主模块能够基于与触发脉冲相关的信息到通用时间和触发脉冲来解析时间值。

公开(公告)号：US09292978B2

公开(公告)日：2016-03-22

申请号：US14204111

申请日：2014-03-11

Applicant: ZONAR SYSTEMS, INC.

Inventor： Bryan Hunt

IPC: G06F17/00 ,  G07C5/00 ,  G07C5/08 ,  G06F19/00 ,  D06F39/00 ,  G01S5/02 ,  G01S5/06 ,  G01M17/02 ,  G06K7/10 ,  G04G7/00

CPC classification number: G07C5/008 ,  D06F39/005 ,  G01M17/02 ,  G01S5/02 ,  G01S5/021 ,  G01S5/06 ,  G04G7/02 ,  G06F17/00 ,  G06F19/00 ,  G06K7/10178 ,  G07C5/085

Abstract: System and method for reducing data transfer rates when a quality of the cellular or satellite link (i.e., a long range wireless data link) is poor. Such a concept is particularly well suited to embodiments where the vehicle data being logged or collected includes position data, because consumers of vehicle data that includes position data often desire to have such data exported from the vehicle on frequent basis, so that the physical location of fleet vehicles can be tracked in real-time. In one embodiment, before transmitting data a current location of the vehicle is checked against known bad locations, and no data is sent when the current location is known to be bad. In another embodiment, if successful data transmission is not confirmed during a first time period, additional transmission attempts are delayed for a second time period.

Abstract translation: 当蜂窝或卫星链路（即，远距离无线数据链路）的质量差时，用于降低数据传输速率的系统和方法。 这样的概念特别适用于其中记录或收集的车辆数据包括位置数据的实施例，因为包括位置数据的车辆数据的消费者通常希望具有频繁地从车辆输出的这种数据，使得物理位置 车队车辆可以实时跟踪。 在一个实施例中，在发送数据之前，根据已知的不良位置检查车辆的当前位置，并且当当前位置被认为是坏时，不发送数据。 在另一个实施例中，如果在第一时间段期间没有确认成功的数据传输，则附加的传输尝试被延迟第二时间段。

公开(公告)号：US09046878B2

公开(公告)日：2015-06-02

申请号：US13388557

申请日：2010-07-09

Applicant: Chuan Zheng

Inventor： Chuan Zheng

IPC: G04G7/00 ,  G06F19/00 ,  H04L1/16 ,  H04J3/06

CPC classification number: G04G7/02 ,  G06F19/00 ,  G06F19/3418 ,  H04J3/0664 ,  H04L1/1678

Abstract: A patient monitoring device (10) transmits patient data packets (70) to a server (12). In response to the server receiving the transmitted patient data packet, the server sends an acknowledgement (ACK) message (72) from the server at the patient monitoring device including a timestamp (74). The patient monitoring device compares the timestamp in the received ACK message with a current time of its clock (28). If the times differ by more than a selected amount, the clock is synchronized to the timestamp.

Abstract translation: 患者监视装置（10）将患者数据分组（70）发送到服务器（12）。 响应于服务器接收所发送的患者数据分组，服务器从患者监视设备处的服务器发送包括时间戳（74）的确认（ACK）消息（72）。 患者监视装置将接收到的ACK消息中的时间戳与其时钟（28）的当前时间进行比较。 如果时间不同于所选择的时间，时钟将同步到时间戳。

公开(公告)号：US20130121117A1

公开(公告)日：2013-05-16

申请号：US13424807

申请日：2012-03-20

Applicant: Oren E. Eliezer

Inventor： Oren E. Eliezer

IPC: G04C11/02

CPC classification number: G04G7/02 ,  G04R20/10

Abstract: A novel and useful system and method for leap second and daylight saving time (DST) correction for use in a radio controlled clock (RCC) receiver. The RCC receiver extracts schedule information from the frame, including the time for the DST transition and whether a leap second needs to be added at the end of this half-year. Linear error correcting coding is used for the leap second and the DST on/off indications, while non-linear error correcting coding (e.g., a look up table) is used for the DST schedule to enhance reception reliability in the presence of noise and interference. The one second/one hour corrections are scheduled to occur when they should take place and the correction is applied exactly when DST or leap second is to go into effect, without having to receive anything around the time of the correction.

Abstract translation: 一种用于无线电控制时钟（RCC）接收机的闰秒和夏令时（DST）校正的新颖有用的系统和方法。 RCC接收方从帧中提取时间表信息，包括DST转换的时间以及在这个半年结束时是否需要添加闰秒。 线性纠错编码用于闰秒和DST开/关指示，而非线性纠错编码（例如，查询表）用于DST时间表，以增强在存在噪声和干扰的情况下的接收可靠性 。 一秒钟/一小时的修正计划在发生时发生，并且当DST或闰秒生效时，正确地应用校正，而不必在纠正时间内收到任何信息。

公开(公告)号：US20120154062A1

公开(公告)日：2012-06-21

申请号：US12969324

申请日：2010-12-15

Applicant: Steven R. WILKINSON ,  Matthew T. CASHEN ,  Todd O. CLATTERBUCK

Inventor： Steven R. WILKINSON ,  Matthew T. CASHEN ,  Todd O. CLATTERBUCK

IPC: H01S1/06

CPC classification number: H03L7/26 ,  G04F5/14 ,  G04F13/02 ,  G04G7/00 ,  G04G7/02 ,  H01S3/1303 ,  H01S3/1304 ,  H01S3/1305 ,  H01S3/2383

Abstract: A system for distributing a reference oscillator signal includes a clock having a reference oscillator and a femtosecond laser stabilized by the reference oscillator. The system also includes at least one beamsplitter configured to split the femtosecond laser. The system further includes one or more remote nodes that are spaced from the clock. The remote nodes are configured to generate reference signals based on the split femtosecond laser.

Abstract translation: 用于分配参考振荡器信号的系统包括具有参考振荡器和由参考振荡器稳定的飞秒激光器的时钟。 该系统还包括被配置为分裂飞秒激光的至少一个分束器。 该系统还包括与时钟间隔开的一个或多个远程节点。 远程节点被配置为基于分裂飞秒激光产生参考信号。

公开(公告)号：US20120151093A1

公开(公告)日：2012-06-14

申请号：US13388557

申请日：2010-07-09

Applicant: Chuan Zheng

Inventor： Chuan Zheng

IPC: G06F15/16

CPC classification number: G04G7/02 ,  G06F19/00 ,  G06F19/3418 ,  H04J3/0664 ,  H04L1/1678

Abstract: A patient monitoring device (10) transmits patient data packets (70) to a server (12). In response to the server receiving the transmitted patient data packet, the server sends an acknowledgement (ACK) message (72) from the server at the patient monitoring device including a timestamp (74). The patient monitoring device compares the timestamp in the received ACK message with a current time of its clock (28). If the times differ by more than a selected amount, the clock is synchronized to the timestamp.

Abstract translation: 患者监视装置（10）将患者数据分组（70）发送到服务器（12）。 响应于服务器接收所发送的患者数据分组，服务器从患者监视设备处的服务器发送包括时间戳（74）的确认（ACK）消息（72）。 患者监视装置将接收到的ACK消息中的时间戳与其时钟（28）的当前时间进行比较。 如果时间不同于所选择的时间，时钟将同步到时间戳。

公开(公告)号：US20120020445A1

公开(公告)日：2012-01-26

申请号：US13004843

申请日：2011-01-11

Applicant: Stephen J. DiStasi ,  Christopher P. Townsend ,  Jacob H. Galbreath ,  Steven W. Arms

Inventor： Stephen J. DiStasi ,  Christopher P. Townsend ,  Jacob H. Galbreath ,  Steven W. Arms

IPC: H04W56/00

CPC classification number: G04G7/02 ,  G01D21/00

Abstract: A method of sampling data includes providing a plurality of wireless nodes, wherein each of the wireless nodes includes a receiver, a real time clock and a counter. Ticks of the real time clock are counted by the counter. The method also includes broadcasting a common beacon for receipt by receivers of each of the wireless nodes, and upon receipt of the common beacon setting each of the counters to a first preset value.

Abstract translation: 一种采样数据的方法包括提供多个无线节点，其中每个无线节点包括接收机，实时时钟和计数器。 实时时钟的蜱被计数器计数。 该方法还包括广播用于每个无线节点的接收机接收的公共信标，并且在接收到将每个计数器设置为第一预设值的公共信标时。

公开(公告)号：US07920650B2

公开(公告)日：2011-04-05

申请号：US11936472

申请日：2007-11-07

Applicant: Alexandre Mudrak ,  Hans L. Trautenberg

Inventor： Alexandre Mudrak ,  Hans L. Trautenberg

IPC: H04L27/00

CPC classification number: G04G7/02 ,  G01S19/02 ,  G01S19/32

Abstract: In a system for characterizing a satellite clock in a satellite, the satellite has a transmitting device that emits a transmission signal at a transmission frequency indicative of a state of the satellite clock, and a receiver clock which has a higher precision than the satellite clock. A receiving device is configured to receive the transmission signal and to determine a received signal therefrom, as well as a received signal frequency and/or phase, using the receiver clock. Finally, an evaluation device is configured to determine a frequency offset, drift, and/or an Allan deviation of the transmission frequency from the received signal frequency and/or the received signal phase. The evaluation device determines the stability of the satellite clock, or the validity of its time indication, from the determined frequency offset, frequency drift, and/or the Allan deviation, to thereby characterize the satellite clock.

Abstract translation: 在用于表征卫星中的卫星时钟的系统中，卫星具有以表示卫星时钟的状态的发送频率发射发送信号的发送装置和具有比卫星时钟更高的精度的接收机时钟。 接收设备被配置为使用接收机时钟接收传输信号并从其确定接收到的信号以及接收到的信号频率和/或相位。 最后，评估装置被配置为确定发射频率与接收信号频率和/或接收信号相位的频偏，漂移和/或艾伦偏差。 评估装置根据确定的频率偏移，频率漂移和/或艾伦偏差确定卫星时钟的稳定性或其时间指示的有效性，从而表征卫星时钟。

公开(公告)号：US07536194B2

公开(公告)日：2009-05-19

申请号：US11239837

申请日：2005-09-30

Applicant: Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

Inventor： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

IPC: H04B7/00

CPC classification number: G04G7/02

Abstract: A method and system to synchronize a first device and a second device includes generating a first tone by the first device, the first tone one of including an identity of the second device and generated at a predefined time, receiving the first tone by the second device, setting a clock of the second device based on the received first time, and sending an acknowledgment by the second device to the first device.

Abstract translation: 一种同步第一设备和第二设备的方法和系统包括：由第一设备产生第一音调，第一音调包括第二设备的标识并在预定时间生成，由第二设备接收第一音调 基于接收到的第一时间设置第二设备的时钟，并且将第二设备的确认发送到第一设备。