Method for measuring resistance for a subscriber line interface circuit using a protective circuit
    1.
    发明申请
    Method for measuring resistance for a subscriber line interface circuit using a protective circuit 有权
    使用保护电路测量用户线接口电路的电阻的方法

    公开(公告)号:US20050238165A1

    公开(公告)日:2005-10-27

    申请号:US11089044

    申请日:2005-03-24

    CPC classification number: H04M1/24

    Abstract: The invention relates to a method for ascertaining a resistance value (Z) between a first contact (2) and a second contact (3) in a subscriber line interface circuit (4), where a protective circuit (9) for protecting the subscriber line interface circuit (4) against overvoltages is provided between the two contacts (2, 3) and comprises a parallel circuit containing a protective capacitor (5) with two resistors (7, 8) connected in series via a node (K), the node (K) being connected to a third contact (10) in the subscriber line interface circuit (4), where the method has the following steps: a predetermined charging voltage (UCharge) is applied to the protective capacitor (5); a threshold voltage (UTH) is calculated on the basis of the resistance values (R1, R2) of the two resistors (7, 8) and the applied charging voltage (UCharge); a measured voltage (UM) tapped off across one of the two resistors (7, 8) is measured while the protective capacitor (5) is discharging; the measured voltage (UM) is compared with the calculated threshold voltage (UTH); a period (Δt) between the start of the discharging of the protective capacitor (5) and the time at which the measured voltage (UM) is the same as the threshold voltage (UTH) is ascertained; and the resistance value (Z) is calculated using the ascertained period (Δt) and the resistance values (R1, R2) of the two resistors (7, 8).

    Abstract translation: 本发明涉及一种用于确定用户线接口电路(4)中的第一接触(2)和第二接触(3)之间的电阻值(Z)的方法,其中保护电路(9)用于保护用户线路 在两个触点(2,3)之间设置有过电压的接口电路(4),并且包括一个并联电路,该并联电路包含一个保护电容器(5),其中两个电阻器(7,8)经由节点(K)串联连接, (K)连接到所述用户线路接口电路(4)中的第三接点(10),其中所述方法具有以下步骤:将预定充电电压(U SUB充电)施加到所述保护 电容器(5); 基于两个电阻器(7)的电阻值(R 1,N 2,R 2)来计算阈值电压(U TH TH) ,8)和施加的充电电压(U SUB充电); 在保护电容器(5)放电的同时测量在两个电阻器(7,8)中的一个上分接的测量电压(U M M); 将测量的电压(U SUB M)与计算的阈值电压(U TH TH)进行比较; 在保护电容器(5)的放电开始和测量电压(U SUB M)之间的时间与阈值电压(U TH)相同的时间段(Deltat) ); 并且使用确定的周期(Deltat)和两个电阻器(7,8)的电阻值(R 1,R 2,R 2)来计算电阻值(Z) 。

    SIMD processor with a subroutine control unit
    2.
    发明授权
    SIMD processor with a subroutine control unit 有权
    具有子程序控制单元的SIMD处理器

    公开(公告)号:US07539846B2

    公开(公告)日:2009-05-26

    申请号:US10232152

    申请日:2002-08-30

    CPC classification number: G06F15/8007 G06F9/30036 G06F9/30072 G06F9/3885

    Abstract: The invention relates to a method and an apparatus for controlling a digital signal processor having a number of arithmetic units (1a, 1b) which process a program (8). A control unit (5) is provided for independent control of the individual arithmetic units (1a, 1b), which control unit (5) reads and evaluates the flags (9a, 9b) which are specific to the arithmetic units, and deactivates those arithmetic units (1a, 1b) whose associated flag is not set, so that a subroutine is carried out only by those arithmetic units (1a, 1b) whose flags are set.

    Abstract translation: 本发明涉及一种用于控制具有处理程序(8)的多个算术单元(1a,1b)的数字信号处理器的方法和装置。 控制单元(5)被提供用于各个运算单元(1a,1b)的独立控制,该控制单元(5)读取和评估对运算单元特有的标志(9a,9b),并且停用那些算术 单元(1a,1b),其相关标志未被设置,使得子程序仅由标志被设置的算术单元(1a,1b)执行。

    Method and device for interpolating or decimating a signal
    3.
    发明申请
    Method and device for interpolating or decimating a signal 有权
    用于内插或抽取信号的方法和装置

    公开(公告)号:US20050147179A1

    公开(公告)日:2005-07-07

    申请号:US10971526

    申请日:2004-10-22

    CPC classification number: H03H17/0294 H03H17/0657 H03H17/0664 H04L27/0008

    Abstract: A method and a device for interpolating or decimating a signal is provided, the signal being processed by a plurality of signal processing means connected in series, which at least comprise means for increasing or reducing a clock rate of the signal and filtering means. To achieve adaptation to different operating modes or transmission standards, individual portions of the signal processing means connected in series can be bridged by bypasses. In addition, filtering parameters of the filtering means can be varied and factors, by which a clock rate of the signal is increased or reduced, can be changed.

    Abstract translation: 提供了一种用于内插或抽取信号的方法和装置,该信号由串联连接的多个信号处理装置处理,该信号处理装置至少包括用于增加或减少信号和滤波装置的时钟速率的装置。 为了实现对不同操作模式或传输标准的适应,串联连接的信号处理装置的各个部分可以通过旁路桥接。 此外,可以改变滤波装置的滤波参数,并且可以改变信号的时钟速率增加或减小的因素。

    Ground key detection circuit and method for interference-resistant detection of the activation of a ground key for telephones
    4.
    发明授权
    Ground key detection circuit and method for interference-resistant detection of the activation of a ground key for telephones 失效
    接地钥匙检测电路及用于电话接地钥匙启动的抗干扰检测方法

    公开(公告)号:US06944286B1

    公开(公告)日:2005-09-13

    申请号:US10009747

    申请日:2000-05-30

    Inventor: Gerhard Nossing

    CPC classification number: H04M19/026

    Abstract: A grounding key detecting device and method for interference-proof detection of the operation of grounding keys in telephones. A circuit that detects the operation of a grounding key includes a current detection device configured to detect a current flowing when the grounding key is in operation, a comparator configured to compare the detected current with at least one threshold value, and a monitoring circuit configured to detect a first period when the current exceeds the threshold value, detect a second period when the current drops below the threshold value, and output a grounding key detection signal when the first period is greater than the second period.

    Abstract translation: 一种用于干扰检测电话中接地钥匙操作的接地钥匙检测装置和方法。 检测接地钥匙的动作的电路包括:电流检测装置,被配置为检测接地钥匙工作时流动的电流;比较器,被配置为将检测到的电流与至少一个阈值进行比较;以及监视电路, 当电流超过阈值时,检测第一期间,当电流下降到阈值以下时检测第二期间,并且当第一期间大于第二期间时,输出接地钥匙检测信号。

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