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    • 3. 发明授权
    • Communication timing control arrangement and method thereof
    • 通信定时控制装置及其方法
    • US6028849A
    • 2000-02-22
    • US844266
    • 1997-04-18
    • Francois NiotRoland Van Der Tuijn
    • Francois NiotRoland Van Der Tuijn
    • H04B7/26H04J3/06H04J3/00H04B7/212
    • H04W56/0085H04B7/2671H04J3/0602
    • A radio controller arrangement for controlling communication signal timing in a duplex radio-frequency TDMA radio includes a TDMA timer that generates a receive timing signal and a microprocessor circuit. The microprocessor circuit commands the TDMA timer to activate the radio to receive a signal and converts the signal into packets having synchronization and data fields. The TDMA timer synchronizes a beginning of a data collection operation to the synchronization field and locates the beginning of the data field based on the end of the synchronization field. The TDMA timer collects data from the data field until it detects the end of the data field. The TDMA timer then commands deactivation of the radio. The radio controller arrangement may be incorporated into a communication device or used in connection with a method for controlling communication signal timing.
    • 用于控制双工射频TDMA无线电中的通信信号定时的无线电控制器装置包括产生接收定时信号的TDMA定时器和微处理器电路。 微处理器电路命令TDMA定时器激活无线电接收信号并将该信号转换为具有同步和数据字段的分组。 TDMA定时器将数据收集操作的开始同步到同步字段,并且基于同步字段的结束定位数据字段的开始。 TDMA定时器从数据字段收集数据,直到它检测到数据字段的结束。 TDMA定时器然后命令停用无线电。 无线电控制器装置可以结合到通信装置中或者与用于控制通信信号定时的方法结合使用。
    • 4. 发明授权
    • Method and apparatus for extracting a clock signal from a received signal
    • 从接收信号中提取时钟信号的方法和装置
    • US5841823A
    • 1998-11-24
    • US542870
    • 1995-10-13
    • Roland Van Der Tuijn
    • Roland Van Der Tuijn
    • H03L7/08H03L7/093H04L7/033H03D3/24
    • H03L7/08H03L7/093H04L7/0331H04L7/0334
    • A clock signal is extracted from a received signal. An edge detector detects edges of the received signal, where the received signal transitions between a logic 0 and a logic 1. A center between each pair of consecutive edges is determined. Each center which is not within an associated correction window is discarded. An extracted clock signal is generated. The phase of the extracted clock signal is varied based on the centers between each pair of consecutive edges which are not discarded. In one embodiment, a current correction window size is varied based on whether an immediate previous center was within an immediate previous correction window. When the immediate previous center is discarded because it is not within the immediate previous correction window, the current correction window size is enlarged. When the immediate previous center is within the immediate previous correction window, and the immediate previous correction window is not already at a predetermined minimum size for correction windows, the current correction window size is reduced.
    • 从接收信号中提取时钟信号。 边缘检测器检测接收信号的边缘,其中接收信号在逻辑0和逻辑1之间转换。确定每对连续边缘之间的中心。 不在相关联的校正窗口内的每个中心被丢弃。 产生提取的时钟信号。 提取的时钟信号的相位基于不丢弃的每对连续边缘之间的中心而变化。 在一个实施例中,当前校正窗口尺寸基于紧接的上一个中心是否在立即前一校正窗口内而变化。 当由于不在紧接的上次校正窗口内而立即丢弃上一个中心时,当前校正窗口大小被放大。 当立即上一个中心在紧接着的前一校正窗口内,并且立即上一校正窗口尚未处于用于校正窗口的预定最小尺寸时,当前校正窗尺寸减小。