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    • 31. 发明申请
    • Control loop filter
    • 控制环路滤波器
    • US20060091963A1
    • 2006-05-04
    • US11257407
    • 2005-10-21
    • Andreas Menkhoff
    • Andreas Menkhoff
    • H03L7/00
    • G05B11/42G05B13/024
    • A feedback control loop having a filter response and a cut-off frequency comprises a system under control for generating an output signal being an output signal of the feedback control loop in response to a control difference signal, a loop filter for generating a feedback signal in response to the output signal and a subtraction device for generating the control difference signal by subtracting the feedback signal from an input signal fed to the feedback control loop. The loop filter is adjustable by means of a filter coefficient set having in each case at least one filter coefficient, each depending on a setting parameter, so that a filter coefficient set for adjusting the filter response of the feedback control loop can be selected and the cut-off frequency of the feedback control loop is adjustable externally in a manner dependent on the setting parameter.
    • 具有滤波器响应和截止频率的反馈控制环路包括响应于控制差信号产生作为反馈控制环路的输出信号的输出信号的控制系统,用于产生反馈信号的环路滤波器 响应于输出信号;以及减法装置,用于通过从馈送到反馈控制回路的输入信号中减去反馈信号来产生控制差分信号。 环路滤波器可通过滤波器系数组进行调节,滤波器系数组在每种情况下具有至少一个滤波器系数,每个滤波器系数取决于设置参数,从而可以选择用于调整反馈控制回路的滤波器响应的滤波器系数, 反馈控制回路的截止频率以取决于设定参数的方式从外部调节。
    • 33. 发明授权
    • Method for random access to picture blocks in video pictures
    • 在视频图像中随机访问图像块的方法
    • US06559897B2
    • 2003-05-06
    • US09777441
    • 2001-02-06
    • Andreas MenkhoffGünter Scheffler
    • Andreas MenkhoffGünter Scheffler
    • H04N5907
    • H04N5/14H04N19/423H04N19/61
    • During image processing of video pictures, it is generally necessary to have fast, repeated access to adjacent picture blocks. Picture memories with a sufficient capacity to store complete video pictures do not have the necessary access time to perform image processing in real time. The invention therefore provides for the writing of picture blocks from a picture memory to a fast access memory. Only the pixels in the access memory are accessed when the image processing operation is performed. During the read-out, a further block from the picture memory is simultaneously read into the access memory. As a result, fast access to the picture data is possible in conjunction with little additional outlay in respect to memory. Areas of application for the method are in the image processing of video pictures.
    • 在视频图像的图像处理期间,通常需要对相邻的图像块进行快速,重复的访问。 具有足够容量存储完整视频图像的图像存储器无需实时执行图像处理所需的访问时间。 因此,本发明提供将图像块从图像存储器写入快速存取存储器。 当执行图像处理操作时,仅访问存储器中的像素。 在读出期间,来自图像存储器的另一个块被同时读入存取存储器。 因此,可以快速访问图像数据,同时与存储器相关的附加费用很少。 该方法的应用领域是视频图像的图像处理。
    • 34. 发明授权
    • Analogue frontend
    • 模拟前端
    • US06522272B2
    • 2003-02-18
    • US09780936
    • 2001-02-09
    • Andreas MenkhoffPeter Schöllhorn
    • Andreas MenkhoffPeter Schöllhorn
    • H03M184
    • H04B1/0007H04B1/18H04B1/30
    • An analogue frontend, such as is used, for example, in receivers for communications equipment, comprises a plurality of analogue components (1-3) which are connected upstream of an analogue/digital converter (4). In order to control the drive level of the individual analogue components (1-3) precisely, the input of the analogue/digital converter (4) can optionally be connected via a switch-over device (8) to the output of any one of the analogue components (1-3) and a drive level control signal for the respective analogue component (1-3) can be generated by a digital control device (5) by evaluating the sampled value which is then supplied by the analogue/digital converter (4).
    • 诸如在用于通信设备的接收机中使用的模拟前端包括连接在模拟/数字转换器(4)的上游的多个模拟组件(1-3)。 为了精确地控制各个模拟部件(1-3)的驱动电平,模拟/数字转换器(4)的输入可以可选地通过切换装置(8)连接到任何一个的输出 数字控制装置(5)可以通过对采样值进行评估,然后由模拟/数字转换器(1-3)提供模拟组件(1-3)和相应的模拟组件(1-3)的驱动电平控制信号 (4)。