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    • 3. 发明申请
    • CLOCK SIGNAL CLEANING CIRCUIT
    • 时钟信号清除电路
    • WO1997016901A1
    • 1997-05-09
    • PCT/CA1996000706
    • 1996-10-24
    • ADVANCED INTELLIGENCE INC.ARKAS, EvanARKAS, Nicholas
    • ADVANCED INTELLIGENCE INC.
    • H04L07/02
    • H04L7/0066H03K5/1252H04L7/0083H04L7/027H04L7/0337
    • A device which reduces jitter and narrows the frequency spectrum of a jitter-ridden clock signal includes a basic unit having a plurality of series connected delay elements outputs from each delay element are all connected to an AND/NAND gate. A front end of the device locates missing clock pulses and ensures regular clock pulses are relayed to the remainder of the device. A succeeding section including plural basic units hones the signal such that jitter elements are removed. By the output of this section time duty cycles are uneven, a positive edge triggered flip-flop is then used to obtain 50 % duty cycles at the expense of halving the clock signal's frequency. Optionally a frequency doubler can be employed to regain the clock signal's original frequency.
    • 降低抖动并使抖动时钟信号的频谱变窄的装置包括具有多个串联连接的延迟元件的基本单元,每个延迟元件的输出都连接到与/非门。 器件的前端定位丢失的时钟脉冲,并确保常规时钟脉冲被中继到器件的其余部分。 包括多个基本单元的后续部分使信号松动以使抖动元件被去除。 通过本节的输出,时间占空比不均匀,然后使用正沿触发触发器以牺牲时钟信号频率的一半为代价获得50%的占空比。 可以选择使用倍频器来重新获得时钟信号的原始频率。
    • 5. 发明申请
    • PERIOD-TO-DIGITAL CONVERTER
    • 周期到数字转换器
    • WO2004068718A8
    • 2004-10-28
    • PCT/GB2004000341
    • 2004-01-27
    • ARKAS EVANGELOSARKAS NICHOLAS
    • ARKAS EVANGELOSARKAS NICHOLAS
    • H03M1/14H03M1/50
    • G04F10/005
    • A period-to-digital converter includes a clock (1) for generating a timing signal, delay lines (2) for producing cumulatively incrementally delayed timing signals for each cycle of the timing signal and an isolator (3) connected in parallel to the delay lines for generating a signal indicative of a number of partial cycles of the timing signal corresponding to which of the incrementally delayed timing signals last contained a specific feature. First and second counters (5, 8) connected to the isolator are enabled for successive time periods to be measured and first and second latches (11, 12) respectively connected to the first and second counters are latched at the end of alternate successive time periods respectively. An arithmetic module (22) connected to the first and second latches obtains difference values between their output values, which difference values are representative of the successive time periods respectively.
    • 周期数字转换器包括用于产生定时信号的时钟(1),用于产生用于定时信号的每个周期的累积递增延迟的定时信号的延迟线(2)和与延迟并联连接的隔离器(3) 用于产生指示与最后包含特定特征的增量延迟的定时信号中的哪一个对应的定时信号的部分周期数的信号的线。 连接到隔离器的第一和第二计数器(5,8)被启用以测量连续的时间段,并且分别连接到第一和第二计数器的第一和第二锁存器(11,12)在交替的连续时间段的结束时被锁存 分别。 连接到第一和第二锁存器的算术模块(22)获得它们的输出值之间的差值,该差分值分别表示连续的时间段。
    • 7. 发明申请
    • PERIOD-TO-DIGITAL CONVERTER
    • 周期到数字转换器
    • WO2004068718A1
    • 2004-08-12
    • PCT/GB2004/000341
    • 2004-01-27
    • ARKAS, EvangelosARKAS, Nicholas
    • ARKAS, EvangelosARKAS, Nicholas
    • H03M1/14
    • G04F10/005
    • A period-to-digital converter includes a clock (1) for generating a timing signal, delay lines (2) for producing cumulatively incrementally delayed timing signals for each cycle of the timing signal and an isolator (3) connected in parallel to the delay lines for generating a signal indicative of a number of partial cycles of timing signal corresponding to which to the incrementally delayed timing signals last contained a specific feature. First and second counters (5, 8) connected to the isolator are enabled for successive time periods to be measured and the first and second latches (11, 12) respectively connected to the first and second counters are latched at the end of alternate successive time periods respectively. An arithmetic module (22) connected to the first and second latches obtains difference values between their output values, which difference values are representative of the successive time periods respectively.
    • 周期数字转换器包括用于产生定时信号的时钟(1),用于产生用于定时信号的每个周期的累积递增延迟的定时信号的延迟线(2)和与延迟并联连接的隔离器(3) 用于产生指示对应于最后延迟定时信号的定时信号的部分周期的数量的信号的线包含特定特征的线。 连接到隔离器的第一和第二计数器(5,8)被启用以连续的时间段被测量,并且分别连接到第一和第二计数器的第一和第二锁存器(11,12)在交替的连续时间结束时被锁存 期间。 连接到第一和第二锁存器的算术模块(22)获得它们的输出值之间的差值,该差分值分别表示连续的时间段。
    • 8. 发明申请
    • PULSE CLOCK/SIGNAL DELAY APPARATUS AND METHOD
    • 脉冲时钟/信号延迟装置和方法
    • WO0059113A9
    • 2001-11-15
    • PCT/GB0001169
    • 2000-03-27
    • ARKAS EVANGELOSARKAS NICHOLAS
    • ARKAS EVANGELOSARKAS NICHOLAS
    • G06F1/10H03K5/13H03K5/15
    • G06F1/10H03K5/131H03K5/133
    • A Pulse Clock Delay (PCD) apparatus (208) includes a selectable plurality (Nd) of series-connected pulse transition delay units (209) from a total plurality (Nmax) of such units. Each unit provides an incremental transition delay interval DELTA t. The PCD may be connected to a first intermediate proximal node (nla) and an adjacent electrically isolated second intermediate node (nlb) where the first and second intermediate nodes are in a shorter (215a, 215b) of two signal paths having respective proximal and spaced apart distal ends (212, 216) in an electrical network. Control means (205), responsive to the difference in electrical length between the two signal paths (214, 215), configures the switchable selection means to select a particular number of delay segments such that the propagation of a first edge transition (102) through the series combination of the shorter first path (215a, 215b) and the delay segment (208) is delayed sufficiently to arrive at the second path distal end (216) within +/- DELTA t of the time of arrival of the first edge transition propagating through the second path. Multiple PCDs may be distributed on a PCB to compensate delay differences for multiple pairs of unequal length bifurcated clock/signal lines.
    • 脉冲时钟延迟(PCD)装置(208)包括来自这些单元的总多个(Nmax)的可选择的多个(Nd)串联脉冲转移延迟单元(209)。 每个单元提供递增的过渡延迟间隔DELTA t。 PCD可以连接到第一中间近端节点(nla)和相邻的电隔离的第二中间节点(nlb),其中第一和第二中间节点处于具有相应近端和间隔的两个信号路径的较短(215a,215b) 在电网中的分开的远端(212,216)。 控制装置(205)响应于两个信号路径(214,215)之间的电长度的差异,配置可切换选择装置来选择特定数量的延迟段,使得第一边缘过渡(102)的传播通过 较短的第一路径(215a,215b)和延迟段(208)的串联组合被充分延迟以在第一边缘过渡的到达时间的+/- DELTA内到达第二路径远端(216) 通过第二条路径传播。 多个PCD可以分布在PCB上以补偿多对不等长度分支时钟/信号线的延迟差异。