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    • 1. 发明公开
    • CLOCK SIGNAL MONITORING UNIT
    • EP4450985A1
    • 2024-10-23
    • EP23168733.6
    • 2023-04-19
    • NXP B.V.
    • Lentz, AndreasPrice, David Paul
    • G01R31/317G06F1/10H03K5/19
    • G01R31/31727G06F1/10H03K5/19H03K5/1536H03K5/1565
    • Clock signal monitoring unit (100), comprising:
      - a first flip flop (10) and a second flip flop (11), the first flip flop (10) and the second flip flop (11) being cross-coupled, the first flip flop (10) being dockable by a clock signal (CLK) and the second flip flop (11) being clockable by an inverted clock signal (CLK), wherein outputs of the first and second flip flops (10, 11) are connected to a first XOR gate (20);
      - a third flip flop (12) being dockable by the clock signal (CLK) and a fourth flip flop (13) being dockable by the inverted clock signal (CLK);
      - an output of the first XOR gate (20) being connected to a delay element (21), the delay element (21) being adapted to delay the output of the first XOR gate (20) to a specified amount of time (T1), wherein the specified amount of time (T1) stands in a defined relationship to a frequency of the clock signal (CLK);
      - an output of the delay element (21) being connected to the third flip flop (12) and to the fourth flip flop (13);
      - an output of the third flip flop (12) and an inverted output of the fourth flip flop (13) being connected to the second XOR gate (14); and
      - an output of the second XOR gate (14) being configured to provide a glitch detect signal (GD).
    • 4. 发明公开
    • FREQUENZUMRICHTER
    • FREQUENCY
    • EP3243267A1
    • 2017-11-15
    • EP15816149.7
    • 2015-12-17
    • Schmidhauser AG
    • BISIG, Thomas
    • H02M5/45
    • G06F11/1604G06F1/08H02M5/45H02M5/4585H03K5/19H03L7/1803H04L12/56H04L2012/5674
    • The invention relates to a frequency converter (1) having a control unit (2). The control unit (2) has: a serial control-unit interface (3); a control-unit clock generator (4) for generating a control-unit clock pulse, data being transmitted via the serial control-unit interface (3) in accordance with the control-unit clock pulse; and a control-unit processor (5) which is designed to determine at least one control variable in accordance with at least one actual value. The frequency converter (1) also has a power unit (6), said unit having a data connection to the control unit (2) and having: a number of power semiconductors (7); a power-unit clock generator (8) for generating an adjustable power-unit clock pulse; a serial power-unit interface (9), which can be coupled to the control-unit interface (3) in order to produce a data connection; a clock-generator adjusting unit (10), which has a signal connection to the power-unit interface (9) and is designed to adjust the power-unit clock pulse in accordance with signals received by the power unit (6) on the power-unit interface (9); a power-unit processor (11), which is designed to control the power semiconductors (7) in accordance with the control variable and the power-unit clock pulse; and at least one sensor unit (12), which is designed to determine the at least one actual value. The control unit (2) is designed to transmit the at least one control variable to the power unit (6) via the control-unit interface (3) and the power unit (6) is designed to transmit the at least one actual value to the control unit (2) via the power-unit interface (9).
    • 9. 发明公开
    • Method and apparatus for detecting cut-off frequency of pulse signal
    • Verfahren und Vorrichtung zur Erkennung der Grenzfrequenz eines Impulssignals
    • EP2717469A2
    • 2014-04-09
    • EP13181992.2
    • 2013-08-28
    • LSIS Co., Ltd.
    • Park, Kang Hee
    • H03K5/19H03K5/26G01R23/00G01R23/10
    • H03K21/40G01R23/10G01R23/15H03K5/19H03K5/26H03K21/38
    • An apparatus (30) and method for detecting a cut-off frequency of a pulse signal (First Pulse Signal) is provided to detect a cut-off frequency of a pulse signal, in a case a frequency of an inputted pulse signal exceeds a maximum rated speed due to various reasons including noises generated by a system environment or an encoder, or system design error, whereby an appropriate action thereto can be taken, the apparatus (30) including an input processor (31) configured to generate a second pulse signal at a time when a rising edge and a falling edge of a first pulse signal appear, in a case the first pulse signal, which is a pulse signal of a monitoring object, is inputted, a counter (32) configured to count a clock signal relative to the second pulse signal generated by the input processor, a reset processor (33) configured to reset the counter at every predetermined (set) period, and a detector (34) configured to generate and output a cut-off frequency of a detection signal, in a case an output value of the counter exceeds a predetermined (set) threshold during the predetermined period.
    • 在输入的脉冲信号的频率超过最大值的情况下,提供用于检测脉冲信号(第一脉冲信号)的截止频率的装置(30)和方法以检测脉冲信号的截止频率 由于各种原因引起的额定速度,包括由系统环境或编码器产生的噪声或系统设计错误,由此可以采取适当的动作,所述装置(30)包括输入处理器(31),其被配置为产生第二脉冲信号 在第一脉冲信号的上升沿和下降沿出现的情况下,在作为监视对象的脉冲信号的第一脉冲信号被输入的情况下,配置为对时钟信号进行计数的计数器(32) 相对于由输入处理器产生的第二脉冲信号,复位处理器(33)被配置为以每个预定(设置)周期复位计数器;以及检测器(34),被配置为产生和输出检测的截止频率 信号,在一种情况下 计数器的输出值在规定期间内超过规定(设定)阈值。