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公开(公告)号：US20110194660A1
公开(公告)日：2011-08-11
申请号：US12703056
申请日：2010-02-09
申请人： John Kenney , Declan Dalton
发明人： John Kenney , Declan Dalton
IPC分类号： H04L7/00
CPC分类号： H03L7/0807 , H03L7/091 , H04L7/033
摘要： Apparatus and methods for rotational frequency detection are disclosed. In one embodiment, a rotational frequency detector is configured to receive samples taken from a serial data stream and to generate a frequency up error signal or a frequency down error signal. The rotational frequency detector processes a first set of samples to generate first transition data, which may be stored in a memory. The rotational frequency detector processes a second and third set of samples to generate second and third transition data. The frequency up or frequency down error signal is generated based at least partly on the first, second or third transition data. This configuration can reduce the maximum operating frequency of the rotational frequency detector, thereby simplifying the rotational frequency detector design to a point that a conventional static digital CMOS circuit design flow can be used to design the rotational frequency detector.
摘要翻译： 公开了用于旋转频率检测的装置和方法。 在一个实施例中，旋转频率检测器被配置为接收从串行数据流获取的采样并产生上变频信号或降频误差信号。 旋转频率检测器处理第一组采样以产生可存储在存储器中的第一转换数据。 旋转频率检测器处理第二和第三组采样以产生第二和第三转换数据。 至少部分地基于第一，第二或第三转换数据生成上升或下降误差信号。 该配置可以降低旋转频率检测器的最大工作频率，从而将旋转频率检测器设计简化为可以使用传统的静态数字CMOS电路设计流程来设计旋转频率检测器。
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公开(公告)号：US08442174B2
公开(公告)日：2013-05-14
申请号：US12703056
申请日：2010-02-09
申请人： John Kenney , Declan Dalton
发明人： John Kenney , Declan Dalton
IPC分类号： H04L7/00
CPC分类号： H03L7/0807 , H03L7/091 , H04L7/033
摘要： Apparatus and methods for rotational frequency detection are disclosed. In one embodiment, a rotational frequency detector is configured to receive samples taken from a serial data stream and to generate a frequency up error signal or a frequency down error signal. The rotational frequency detector processes a first set of samples to generate first transition data, which may be stored in a memory. The rotational frequency detector processes a second and third set of samples to generate second and third transition data. The frequency up or frequency down error signal is generated based at least partly on the first, second or third transition data. This configuration can reduce the maximum operating frequency of the rotational frequency detector, thereby simplifying the rotational frequency detector design to a point that a conventional static digital CMOS circuit design flow can be used to design the rotational frequency detector.
摘要翻译： 公开了用于旋转频率检测的装置和方法。 在一个实施例中，旋转频率检测器被配置为接收从串行数据流获取的采样并产生上变频信号或降频误差信号。 旋转频率检测器处理第一组采样以产生可存储在存储器中的第一转换数据。 旋转频率检测器处理第二和第三组采样以产生第二和第三转换数据。 至少部分地基于第一，第二或第三转换数据生成上升或下降误差信号。 该配置可以降低旋转频率检测器的最大工作频率，从而将旋转频率检测器设计简化为可以使用传统的静态数字CMOS电路设计流程来设计旋转频率检测器。
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公开(公告)号：US20050027763A1
公开(公告)日：2005-02-03
申请号：US10832187
申请日：2004-04-26
申请人： Declan Dalton , Lawrence DeVito , Mark Ferriss , Paul Murray
发明人： Declan Dalton , Lawrence DeVito , Mark Ferriss , Paul Murray
摘要： A harmonic detector including a pattern detector circuit responsive to a clock signal and a data signal configured to detect a target bit pattern from said data signal, and a time-out circuit responsive to said pattern detector circuit configured to detect the absence of said target bit pattern during a predetermined time-out parameter for indicating when said clock signal exceeds said data signal by a factor of two or more.
摘要翻译： 一种谐波检测器，包括响应于时钟信号的模式检测器电路和被配置为从所述数据信号检测目标位模式的数据信号，以及响应于所述模式检测器电路的超时电路，被配置为检测所述目标位的不存在 在预定的超时参数期间，用于指示何时所述时钟信号超过所述数据信号2倍或更多倍。
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公开(公告)号：US20050024094A1
公开(公告)日：2005-02-03
申请号：US10830664
申请日：2004-04-23
申请人： Declan Dalton , Lawrence DeVito , Mark Ferriss , Paul Murray
发明人： Declan Dalton , Lawrence DeVito , Mark Ferriss , Paul Murray
CPC分类号： H03D13/004 , H03L7/087 , H03L7/0891 , H03L7/091 , H03L7/10 , H04L7/033
摘要： A rotational frequency detector system including a rotational frequency detector responsive to a data signal and a clock signal. The rotational frequency detector is configured to compare the frequency of the clock signal to the frequency of the data signal to define frequency up and frequency down signals that adjust the frequency of the clock signal to be equal to the frequency of the data signal. A step control system is responsive to the rotational frequency detector and a step clock signal and is configured to define predetermined pulse widths for the frequency up and frequency down signals.
摘要翻译： 一种旋转频率检测器系统，包括响应数据信号和时钟信号的旋转频率检测器。 旋转频率检测器被配置为将时钟信号的频率与数据信号的频率进行比较，以定义将时钟信号的频率调整为等于数据信号的频率的上变频和下变频信号。 步进控制系统响应于旋转频率检测器和步进时钟信号，并且被配置为为上变频信号和降频信号定义预定的脉冲宽度。
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