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    • 60. 发明授权
    • Receive only mode for clock drift correction
    • 仅接收时钟漂移校正模式
    • US09535152B2
    • 2017-01-03
    • US13788185
    • 2013-03-07
    • Apple Inc.
    • Robert MayorMatthew Scott KlahnLongda XingJinghua LingJason ShiArun G. Mathias
    • G01S3/02G01S5/02G01S19/05G01S19/23
    • G01S5/02G01S19/05G01S19/23
    • In some implementations, radio access technology (RAT) signals can be monitored and used to synchronize an internal clock of a mobile device to a network system clock without registering the mobile device to the network. In some implementations, a RAT processor can be configured to receive RAT signals and to prevent transmission of RAT signals. In some implementations, the internal clock can be associated with a GNSS processor and can be used to calculate a location of the mobile device. In some implementations, a RAT processor that is configured for a particular radio access technology can be configured to monitor signals associated with another radio access technology when synchronizing the internal clock. In some implementations, the RAT processor can monitor signals in response to a power event. The power event can be associated with powering a display of the mobile device.
    • 在一些实现中,无线电接入技术(RAT)信号可以被监视并用于将移动设备的内部时钟同步到网络系统时钟,而不将移动设备注册到网络。 在一些实现中,RAT处理器可以被配置为接收RAT信号并防止RAT信号的传输。 在一些实现中,内部时钟可以与GNSS处理器相关联,并且可以用于计算移动设备的位置。 在一些实现中,配置用于特定无线电接入技术的RAT处理器可被配置为在同步内部时钟时监视与另一无线电接入技术相关联的信号。 在一些实现中,RAT处理器可以响应于电力事件监视信号。 电源事件可以与为移动设备的显示器供电相关联。