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    • 8. 发明申请
    • GNSS RECEIVER DESIGN TESTING
    • GNSS接收机设计测试
    • US20120169536A1
    • 2012-07-05
    • US13255865
    • 2009-09-24
    • Alexander MitelmanRobin HakansonDavid KarlssonFredrik LindstromThomas RenstromChristian StahlbergJames Burgess Tidd
    • Alexander MitelmanRobin HakansonDavid KarlssonFredrik LindstromThomas RenstromChristian StahlbergJames Burgess Tidd
    • G01S19/23
    • G01S19/23G01S19/13G01S19/26H04B17/27
    • A GNSS receiver design is tested, which design includes software for generating position/time related data (DPT) based on raw digital data (dRAW) when the software is executed in a processing unit of the receiver. GNSS signals (SRF) are received via a radio frequency input device while moving the radio frequency input device along a route trajectory. The received GNSS signals (SRF) are fed to a radio-frequency front end of a representative example of a receiver unit built according to the design to be tested. The radio-frequency front end produces raw digital data (dRAW) representing the received GNSS signals (SRF), and the raw digital data (dRAW) are stored in a primary data storage as a source file (Fsc). The source file (Fsc) is read from the primary data storage, and the source file (Fsc) is processed by means of the software to generate at least one set of position/time related data (DPT). Each set of position/time related data (DPT) is stored to a respective result file (Fres), and the result file(s) (Fres) is/are evaluated against reference data (Dref) to determine the performance of the design.
    • 测试了GNSS接收机设计,该设计包括当在接收机的处理单元中执行软件时,基于原始数字数据(dRAW)产生位置/时间相关数据(DPT)的软件。 在沿着路线轨迹移动射频输入装置的同时,经由射频输入装置接收GNSS信号(SRF)。 接收的GNSS信号(SRF)被馈送到根据待测设计构建的接收机单元的代表性示例的射频前端。 射频前端产生表示接收到的GNSS信号(SRF)的原始数字数据(dRAW),原始数字数据(dRAW)作为源文件(Fsc)存储在主数据存储器中。 从主数据存储器读取源文件(Fsc),并通过软件处理源文件(Fsc)以生成至少一组位置/时间相关数据(DPT)。 将每组位置/时间相关数据(DPT)存储到相应的结果文件(Fres)中,并根据参考数据(Dref)评估结果文件(Fres)以确定设计的性能。
    • 9. 发明授权
    • Adaptive power saving
    • 自适应省电
    • US08078896B2
    • 2011-12-13
    • US12402558
    • 2009-03-12
    • David Karlsson
    • David Karlsson
    • G06F1/32
    • G06F1/3228
    • A device may enter a first active state associated with a device, exit the first active state and entering a sleep state associated with the device when user input is not received within a inactivity period, receive a first user input at the device during the sleep state, measure an elapsed time between a start of the sleep state and the first user input, and increase the inactivity period of the device when the elapsed time is less than a particular threshold.
    • 当在非活动期间内没有接收到用户输入时,设备可以进入与设备相关联的第一活动状态,退出第一活动状态并进入与设备相关联的睡眠状态,在睡眠状态期间接收设备处的第一用户输入 测量睡眠状态开始与第一用户输入之间的经过时间,并且当经过时间小于特定阈值时增加设备的不活动时间段。