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    • 1. 发明授权
    • Circuit arrangement for a memory cell of a D/A converter
    • D / A转换器的存储单元的电路布置
    • US6005792A
    • 1999-12-21
    • US988593
    • 1997-12-11
    • Jurgen KordtsFriedrich HahnPeter RollaRalf BeierAxel Nathe
    • Jurgen KordtsFriedrich HahnPeter RollaRalf BeierAxel Nathe
    • H01L27/10H03K3/288H03K3/2885H03M1/66H03M1/74G11C11/00
    • H03K3/2885H03K3/288H03M1/742
    • The binary values of the data word to be converted in a widely used type of D/A converter are supplied to a series of stages in which binarily stepped currents are supplied to a common output or derived therefrom, or are conducted to a second common output. To control the current switch, each stage comprises a flipflop in which the binary value to be converted is stored. Integration processes are often used in the integration of analog circuits by means of which digital circuit components cannot be usefully realized, for example, in the IIL technology. In the flipflop comprising cross-coupled transistors, the emitters are connected to a reference voltage which lies between ground potential and the supply voltage so as to obtain a favorable conversion of the digital signals for triggering the current switch. This renders it possible to connect the collectors of the transistors of the flipflop directly to the bases of the current switch. In addition, the control of the flipflop is simplified thereby, and the delay time is shortened.
    • 在广泛使用的D / A转换器中要转换的数据字的二进制值被提供给一系列阶段,其中二进制电流被提供给公共输出或从其导出,或者被传导到第二公共输出 。 为了控制电流开关,每个级包括一个触发器,其中存储要转换的二进制值。 集成过程通常用于集成模拟电路,通过该模拟电路不能有效地实现数字电路组件,例如在IIL技术中。 在包括交叉耦合晶体管的触发器中,发射极连接到位于接地电位和电源电压之间的参考电压,以便获得用于触发电流开关的数字信号的良好转换。 这使得可以将触发器的晶体管的集电极直接连接到电流开关的基极。 此外,由此简化了触发器的控制,并且延迟时间缩短。
    • 2. 发明授权
    • Amplifier having a symmetrical output characteristic
    • 具有对称输出特性的放大器
    • US5343165A
    • 1994-08-30
    • US969630
    • 1992-10-30
    • Jurgen KordtsAxel NathePaul Sonnenberger
    • Jurgen KordtsAxel NathePaul Sonnenberger
    • H03F3/30H03F3/26
    • H03F3/3088H03F3/3001
    • A symmetrical amplifier includes a current mirror circuit and a current splitting circuit. The current splitting circuit splits up an input signal applied to the amplifier as a function of the signal polarity. Negative input currents are applied to the current mirror circuit whose controlled output current is applied to a control input of a first current amplifier circuit arranged in the amplifier. In order to insure symmetrical operation of the amplifier, positive input currents flowing into the amplifier are applied to a control input of a second current amplifier circuit arranged in the amplifier. The second current amplifier circuit is the same as the first current amplifier circuit. The first current amplifier circuit is connected to a positive supply voltage and the second current amplifier circuit is connected to a negative power supply voltage, and the two current amplifier circuits operate into a common load at their output ends.
    • 对称放大器包括电流镜电路和电流分流电路。 电流分路电路将施加到放大器的输入信号分解为信号极性的函数。 将负输入电流施加到电流镜电路,其受控输出电流被施加到布置在放大器中的第一电流放大器电路的控制输入。 为了确保放大器的对称运算,流入放大器的正输入电流被施加到布置在放大器中的第二电流放大器电路的控制输入端。 第二电流放大器电路与第一电流放大器电路相同。 第一电流放大器电路连接到正电源电压,第二电流放大器电路连接到负电源电压,并且两个电流放大器电路在其输出端工作为共同负载。
    • 4. 发明授权
    • Method of determining measuring data on an optical transmission path by
means of optical sensor
    • 通过光学传感器确定光传输路径上的测量数据的方法
    • US4850698A
    • 1989-07-25
    • US20066
    • 1987-02-27
    • Jurgen KordtsGerhard Martens
    • Jurgen KordtsGerhard Martens
    • G08C23/04G01D5/26H04B10/50
    • G01D5/268H04B10/502
    • The invention relates to a method of taking measurements along an optical transmission path by means of an optical sensor. The optical sensor includes an optical converter whose optical attenuation properties can be influenced according to the value to be measured and through which a first beam portion of a high-frequency amplitude-modulated optical transmission beam is passed. A second beam portion of this transmission beam is conveyed via a delay element. The second beam portion is applied together with the first beam portion outputted by the optical converter, via the transmission path as a receive beam to the receiver arrangement. In this way the modulation change produced by the sensor is processed and evaluated as an information about the measure value. Measuring a value at the transmitter end is possible with any optical transmission path of an undefined length, without recalibration of the receiver arrangement, because the optical transmitter beam is additionally subjected to low-frequency modulation. An original modulation factor m.sub.o of the transmission beam is preset as the ratio of the high-frequency (I.sub.HF) to the low-frequency (I.sub.NF) modulation amplitude and is fed the receiver arrangement 3. The received sensor-influenced modulation factor of the receive beam is measured by the receive arrangement 3. The received-to-original modulation signal ratio is evaluated as information about the measuring value (M).
    • 本发明涉及一种通过光学传感器沿光传输路径进行测量的方法。 光学传感器包括光学衰减特性可以根据要测量的值影响并通过高频调幅光传输束的第一光束部分的光转换器。 该传输光束的第二光束部分经由延迟元件传送。 第二光束部分与由光转换器输出的第一光束部分一起作为接收光束经由传输路径被施加到接收器装置。 以这种方式,由传感器产生的调制变化被处理和评估为关于测量值的信息。 由于光发送器光束另外经受低频调制,所以可以在任何未定义长度的光传输路径测量发射机端的值,而不重新校准接收器装置。 发送波束的原始调制因子mo被预设为高频(IHF)与低频(INF)调制幅度的比率,并且被馈送给接收器装置3.接收的受传感器影响的调制因子 光束由接收装置3测量。接收到原始调制信号比被评估为关于测量值(M)的信息。
    • 5. 发明授权
    • Non-invasive oximeter arrangement
    • 非侵入性血氧计排列
    • US5279295A
    • 1994-01-18
    • US616449
    • 1990-11-20
    • Gerhard MartensJurgen KordtsThomas Helzel
    • Gerhard MartensJurgen KordtsThomas Helzel
    • G01N21/31A61B5/00A61B5/055A61B5/145A61B5/1455
    • A61B5/6826A61B5/055A61B5/14552A61B5/6838A61B5/7207
    • A sensor includes a pair of resiliently loaded jaws for receiving a finger, the sensor including a pair of fiber optic light transmitting guides secured in fixed spaced relation to one of the jaws for sensing blood in the finger tip. A control unit includes a light generator for transmitting light modulated at first and second frequencies to one of the guides via a light guide transfer section. The finger pulse modulates the received transmitted light. The modulated light is sensed by the other guide and returned to a receiver in the control unit via the transfer section for separating and demodulating the different frequency signals. The control unit includes a calculating unit which has two branches for processing and then combining by dividing the processed demodulated signals for determining the oxygen content of the blood from the relative magnitudes of the pulse-dependent modulation factor of the wave reflected from the finger.
    • 传感器包括一对用于接收手指的弹性加载的夹爪,该传感器包括一对光纤透光导向器,其固定成与夹爪中的一个固定间隔开,以便感测指尖中的血液。 控制单元包括光发生器,用于经由光导传送部分将以第一和第二频率调制的光发射到一个引导件。 手指脉冲调制所接收的透射光。 经调制的光被另一个引导件感测,并通过传送部分返回到控制单元中的接收器,用于分离和解调不同的频率信号。 控制单元包括计算单元,该计算单元具​​有两个分支,用于根据从手指反射的波的脉冲相关调制因子的相对幅度中分离用于确定血氧含量的经处理的解调信号,然后进行组合。
    • 6. 发明授权
    • Circuit arrangement for the compensation of temperature-dependent and
temperature-independent drift and for the compensation of the
sensitivity of a capacitive sensor
    • 用于补偿温度依赖性和温度独立漂移以及补偿电容式传感器灵敏度的电路布置
    • US4793187A
    • 1988-12-27
    • US62919
    • 1987-06-16
    • Jurgen Kordts
    • Jurgen Kordts
    • G01D3/028G01D3/02G01D3/032G01D5/24G01L9/12G01L13/06G01L19/04
    • G01D5/24G01D3/032G01L9/125
    • A circuits for compensating temperature-dependent and temperature-independent drift of a capacitive sensor including two measuring capacitors (3, 4) comprises pulse duration demodulators (11, 12) in the relevant input circuits. In accordance with pulses supplied by oscillators and whose duration is proportional to the capacitance of the capacitors, a d.c. voltage (U.sub.O) is applied to respective charging capacitors (17, 18) of the pulse duration demodulators (11, 12) for a predetermined period of time in order to charge this capacitors, after which zero potential is applied thereto in order to discharge the capacitors. The output of the relevant pulse duration demodulator is connected to the input (20, 21) of a summing/substraction member (19) whose output (23) supplies a d.c. voltage (U.sub.r). A d.c. voltage (U.sub.O), supplied by a controller (16) which compares one controller input d.c. voltage (U.sub.r) with a fixed reference voltage (U.sub.ref), is readjusted so that the d.c. voltage (U.sub.r) at the output (23) of the summing/subtraction member equals the fixed d.c. reference voltage (U.sub.ref) so that the output voltage (U.sub.a) of the circuit is free of temperature-dependent and temperature-independent drift.
    • 用于补偿包括两个测量电容器(3,4)的电容传感器的温度依赖性和温度独立漂移的电路包括相关输入电路中的脉冲持续时间解调器(11,12)。 根据由振荡器提供的脉冲并且其持续时间与电容器的电容成比例, 将电压(UO)施加到脉冲持续时间解调器(11,12)的各个充电电容器(17,18)一段预定时间段,以对该电容器充电,然后向其施加零电位以便放电 电容器 相关脉冲持续时间解调器的输出连接到一个求和/减法器件(19)的输入端(20,21),其输出端(23)提供直流 电压(Ur)。 一个d.c. 电压(UO)由控制器(16)提供,该控制器比较一个控制器输入直流。 具有固定参考电压(Uref)的电压(Ur)被重新调整,使得直流 求和/减法器件输出端(23)的电压(Ur)等于固定直流电压。 参考电压(Uref),使得电路的输出电压(Ua)不受温度依赖和温度无关漂移。
    • 7. 发明授权
    • Magnetoresistive speed sensor processing circuit utilizing a symmetrical
hysteresis signal
    • 使用对称滞后信号的磁传感器速度传感器处理电路
    • US5231351A
    • 1993-07-27
    • US762526
    • 1991-09-18
    • Jurgen KordtsGeorg KistersMichael Ramm
    • Jurgen KordtsGeorg KistersMichael Ramm
    • G01D5/245G01D5/244G01P1/00G01P3/481G01P3/487G01P3/488H03K5/08H03K17/30H03M1/00
    • G01P3/488G01P1/006G01P3/487
    • A processing circuit for a magnetoresistive rotary speed sensor (13) or the like having a comparator (11) with switching hysteresis for converting an analog sensor signal into a digital switching signal. An apparatus is provided at the input side of the comparator in order to alternately supply each of the comparator inputs, as a function of the switching signal at the output side of the comparator, symmetrically with a given hysteresis signal as a switching threshold. This apparatus also includes a preamplifier (15) which precedes the comparator non-inverting input and which amplifies the sensor signal, and an offset amplifier (18) of the same construction which precedes the comparator inverting input and which amplifiers an offset signal of a preceding offset network (21). The processing circuit provides a simple, integrable circuit which suppresses offsets and compensates for temperature and supply voltage fluctuations and any spread in tolerances of the circuit components.
    • 一种具有用于将模拟传感器信号转换成数字切换信号的具有切换滞后的比较器(11)的磁阻转速传感器(13)等的处理电路。 在比较器的输入侧设置一个装置,以便以给定的滞后信号作为切换阈值对称地交替地提供比较器输入中的每一个作为比较器的输出侧的切换信号的函数。 该装置还包括在比较器同相输入之前并且放大传感器信号的前置放大器(15)和在比较器反相输入之前具有相同结构的偏移放大器(18),并且哪个放大器具有前一个的偏移信号 偏移网络(21)。 处理电路提供了一种简单的可积分电路,其抑制偏移并补偿温度和电源电压波动以及电路部件的公差的任何扩展。
    • 9. 发明授权
    • Fiber-optical pressure sensor with contacting lightwave conductors
    • 具有接触光波导体的光纤压力传感器
    • US5004912A
    • 1991-04-02
    • US410695
    • 1989-09-21
    • Gerhard MartensJurgen KordtsGeorg Weidinger
    • Gerhard MartensJurgen KordtsGeorg Weidinger
    • G01D5/26G01D5/353G01D21/00G01L1/24G01L11/00
    • G01D5/35351G01D5/268
    • The invention relates to a fiber-optical sensor, comprising a light transmitter device (6) which couples transmitted light into at least one first ligthwave conductor (3,4) and also comprising a light receiver device (7) which receives light from the first lightwave conductor and at least one second lightwave conductor (4,3). The lightwave conductors (3,4) comprise adjacently situated portions (1) which can contact one another in a light-transferring manner at given areas and which are accommodated together in an envelope (5) at this area, a force or a pressure being applied to the lightwave conductor via said envelope. The light transmitter device (6) also couples a first transmitted light into the first lightwave conductor (3,4) and a second transmitted light into the second lightwave conductor (4,3).
    • 本发明涉及一种光纤传感器,其包括光发射器装置(6),其将透射光耦合到至少一个第一导波(3,4)中,并且还包括光接收装置(7),该光接收装置从第一 光波导体和至少一个第二光波导体(4,3)。 光波导体(3,4)包括相邻定位的部分(1),其可以在给定区域处以光传递方式彼此接触并且一起容纳在该区域的封套(5)中,力或压力 通过所述信封施加到光波导。 光发射器装置(6)还将第一透射光耦合到第一光波导(3,4)中,并将第二透射光耦合到第二光波导(4,3)中。