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81. 发明授权

US06058081A Optical drive system having servomotor operated relative to maximum quad sum signal 失效
标题翻译：伺服电机相对于最大四和信号操作的光驱系统
公开(公告)号：US06058081A
公开(公告)日：2000-05-02
申请号：US423386
申请日：1995-04-10
申请人： David L. Schell , Randolph Scott Crupper , Kurt W. Getreuer , Leonardus J. Grassens , David E. Lewis , Marvin B. Davis
发明人： David L. Schell , Randolph Scott Crupper , Kurt W. Getreuer , Leonardus J. Grassens , David E. Lewis , Marvin B. Davis
IPC分类号： G11B7/0045 , G02B7/04 , G11B5/55 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/005 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/125 , G11B7/135 , G11B11/105 , G11B15/467 , G11B17/04 , G11B19/28 , G11B20/10 , G11B20/12 , G11B21/02 , G11B21/10 , G11B25/04 , G11B33/08 , H02K41/035 , H03B5/08 , H03B5/12
CPC分类号： G11B17/043 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B21/10 , G11B21/106 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , H02K41/0354 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , G11B7/00456 , G11B7/00745 , G11B7/0901 , H02K41/0356
摘要： An optical drive system includes an objective lens subassembly for directing light from a light source toward an information storage medium. An amount of the directed lighted light is returned from the storage medium. An objective lens is disposed in the objective lens subassembly. A first servomotor moves, during focus capture, the objective lens to a first position, away from the first position toward the storage medium being read while looking for a maximum Quad Sum signal, and back away from the storage medium. An electronic control circuit is connected to the first servomotor. A servo error detector is coupled to the electronic control circuit and disposed in a path of light returning from the information storage medium. The servo error detector is implemented to determine when total light returned from the information storage medium exceeds a predetermined value, to search for a first zero crossing, corresponding to when the Quad Sum signal exceeds a predetermined amplitude, and to indicate to the electronic control circuit to direct close of focus when the Quad Sum signal exceeds the predetermined amplitude.
摘要翻译：光学驱动系统包括用于将来自光源的光引向信息存储介质的物镜子组件。定向点亮光的量从存储介质返回。物镜配置在物镜组件中。第一伺服电机在聚焦捕获期间将物镜移动到第一位置，远离第一位置朝着正在读取的存储介质，同时寻找最大的Quad Sum信号，并且远离存储介质。电子控制电路连接到第一伺服电动机。伺服误差检测器耦合到电子控制电路并且设置在从信息存储介质返回的光的路径中。执行伺服误差检测器以确定从信息存储介质返回的总光是否超过预定值，以搜索对应于四分相信号超过预定幅度时的第一过零点，并向电子控制电路当Quad Sum信号超过预定幅度时，直接聚焦。

82. 发明授权

US6021322A AM radio receiver 失效
标题翻译： AM无线电接收机
公开(公告)号：US6021322A
公开(公告)日：2000-02-01
申请号：US976432
申请日：1997-11-21
申请人： Shigeru Hatada , Yukio Suzuki
发明人： Shigeru Hatada , Yukio Suzuki
IPC分类号： H04B1/26 , H03J3/24 , H03J3/32 , H04B1/18 , H03B5/08
CPC分类号： H03J3/24
摘要： In an AM radio receiver, a radio-frequency tuning circuit comprises a tuning coil, and variable capacitance diode elements connected to the tuning coil; a local oscillator circuit comprises an oscillator coil, a variable capacitance diode element connected in parallel with the oscillator coil, and a capacitance element connected in series with the oscillator coil; and tuning voltage is applied from a variable voltage source to the variable capacitance diode elements of the high-frequency tuning circuit, and to the variable capacitance diode element of the local oscillator circuit through a voltage adjustment circuit connected to the variable voltage source and a reference voltage source.
摘要翻译：在AM无线电接收机中，射频调谐电路包括调谐线圈和连接到调谐线圈的可变电容二极管元件; 本地振荡电路包括振荡器线圈，与振荡器线圈并联连接的可变电容二极管元件和与振荡器线圈串联连接的电容元件; 并且调谐电压从可变电压源施加到高频调谐电路的可变电容二极管元件，并通过连接到可变电压源的电压调节电路和参考电压施加到本地振荡器电路的可变电容二极管元件电压源。

83. 发明授权

US5875158A Servo control system for information storage device 失效
标题翻译：信息存储装置伺服控制系统
公开(公告)号：US5875158A
公开(公告)日：1999-02-23
申请号：US40455
申请日：1998-03-18
申请人： David L Schell
发明人： David L Schell
IPC分类号： G11B7/0045 , G02B7/04 , G11B5/55 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/005 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/125 , G11B7/135 , G11B11/105 , G11B15/467 , G11B17/04 , G11B19/28 , G11B20/10 , G11B20/12 , G11B21/02 , G11B21/10 , G11B25/04 , G11B33/08 , H02K41/035 , H03B5/08 , H03B5/12
CPC分类号： G11B17/043 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B21/10 , G11B21/106 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , H02K41/0354 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , G11B7/00456 , G11B7/00745 , G11B7/0901 , H02K41/0356
摘要： A servo control system for an optical information storage device includes an optical detector for detecting information stored on an information storage media and for detecting a servo error signal. The optical detector provides a sum information signal output and at least one servo error signal output. A motor is provided for positioning the optical detector relative to the information storage media. An analog to digital converter receives the sum information signal output and the servo error signal output to thereby output a digital servo error signal at a predetermined sampling rate. The digital servo error signal is normalized to the sum information signal by the analog to digital converter. A digital signal processor for processing the digital servo error signal and outputting a servo control signal is provided. The digital signal processor includes a digital servo compensation transfer function for producing the servo control signal. The digital servo compensation transfer function provides a magnitude null with a minimal phase disturbance occurring at a predetermined frequency being approximately one half of the sampling rate. One embodiment includes a driver that receives the servo control signal to control the motor.
摘要翻译：一种用于光学信息存储装置的伺服控制系统包括：光检测器，用于检测存储在信息存储介质上的信息并检测伺服误差信号。光检测器提供和信息信号输出和至少一个伺服误差信号输出。提供了用于将光学检测器相对于信息存储介质定位的电动机。模数转换器接收和信息信号输出和伺服误差信号输出，从而以预定的采样速率输出数字伺服误差信号。数字伺服误差信号由模数转换器归一化为和信息信号。提供了一种用于处理数字伺服误差信号并输出伺服控制信号的数字信号处理器。数字信号处理器包括用于产生伺服控制信号的数字伺服补偿传递功能。数字伺服补偿传递函数提供幅度零点，在预定频率处发生的最小相位干扰大约是采样率的一半。一个实施例包括接收伺服控制信号以驱动马达的驱动器。

84. 发明授权

US5663690A Constant high Q voltage controlled oscillator 失效
标题翻译：恒压高压控振荡器
公开(公告)号：US5663690A
公开(公告)日：1997-09-02
申请号：US611392
申请日：1996-03-06
申请人： Michael McGinn
发明人： Michael McGinn
IPC分类号： H03H7/48 , H03B5/04 , H03B5/08 , H03B5/12 , H03B7/02 , H03H11/52 , H03L7/099 , H03L5/00
CPC分类号： H03B5/1231 , H03B5/1215 , H03B5/1225 , H03B5/1243
摘要： A method is described for maintaining a constant Q in a voltage controlled oscillator (VCO) which is tuned over a broad frequency band. A tank circuit (111) sets a center frequency of an oscillator circuit (112). A variable reactance circuit (113) provides a variable effective reactance across the tank circuit (111) corresponding to an applied tuning voltage (117) for tuning the VCO. Resistive currents from the variable reactance circuit are rectified by a rectification circuit (120). A comparator produces a Q control voltage corresponding to the rectified resistive currents and a reference current Iref at a terminal (126) which is coupled to a variable resistance circuit (122) for supplying differential resistive currents to the tank circuit (111) which offset the resistive currents from the variable reactance circuit, thereby maintaining a constant Q in the VCO.
摘要翻译：描述了一种用于在经受宽频带调谐的压控振荡器（VCO）中维持恒定Q的方法。振荡电路（111）设置振荡电路（112）的中心频率。可变电抗电路（113）在对应于用于调谐VCO的施加的调谐电压（117）的谐振电路（111）之间提供可变的有效电抗。来自可变电抗电路的电阻电流由整流电路（120）整流。比较器产生对应于整流电阻电流的Q控制电压和在端子（126）处的参考电流Iref，耦合到可变电阻电路（122），用于向振荡电路（111）提供差分电阻电流，偏移电阻来自可变电抗电路的电阻电流，从而在VCO中保持恒定的Q。

85. 发明授权

US5493257A Modulator with biasing circuit to minimize output distortion 失效
标题翻译：具有偏置电路的调制器，以最小化输出失真
公开(公告)号：US5493257A
公开(公告)日：1996-02-20
申请号：US295017
申请日：1994-08-24
申请人： Peter E. Chadwick
发明人： Peter E. Chadwick
IPC分类号： H03C3/00 , H03C3/09 , H04B1/44 , H04L27/12 , H03B5/08 , H03L7/08
CPC分类号： H03C3/095 , H04B1/44
摘要： A modulator for digital modulation is described to produce a modulated output from a voltage controlled oscillator in a phase locked loop during transmission of a random modulating input. The input voltage is applied to a coupling capacitor and when transmission ceases, the state of charge on the capacitor will not change because of a biasing circuit which comprises two resistors fed by a tri-state buffer which holds the input terminal of the capacitor at the average level between logic zero and logic one when no modulation is applied.
摘要翻译：描述了用于数字调制的调制器，以在随机调制输入的传输期间在锁相环中产生来自压控振荡器的调制输出。输入电压施加到耦合电容器，当传输停止时，电容器的充电状态不会改变，因为偏置电路包括两个由三态缓冲器馈电的电阻器，该三态缓冲器将电容器的输入端保持在当不应用调制时，逻辑0与逻辑1之间的平均电平。

86. 发明授权

US5457434A Integrated circuit oscillator with high voltage feedback network 失效
标题翻译：具有高压反馈网络的集成电路振荡器
公开(公告)号：US5457434A
公开(公告)日：1995-10-10
申请号：US221346
申请日：1994-03-31
申请人： Tony S. Partow
发明人： Tony S. Partow
IPC分类号： H03B5/02 , G06F3/033 , G06F3/044 , H02M3/337 , H03B5/06 , H03B5/08 , H03B5/12
CPC分类号： G06F3/044 , H02M3/337 , H03B5/06 , H03B5/1228 , Y10S331/03
摘要： An oscillator circuit having an amplifier and feedback loop multiplies a generated signal by appropriate selection of capacitance ratios in the feedback loop. In order to isolate this multiplied, high voltage signal, a voltage divider is used to isolate the high voltage portion from the input and output (I/O) of an integrated circuit oscillator core. The multiplied voltage creates a high voltage signal suitable for stylus signal transmission. The divided, and relatively low, voltage is used in the feedback path to stabilize the oscillator core's operation.
摘要翻译：具有放大器和反馈环路的振荡器电路通过在反馈回路中适当地选择电容比来乘积生成的信号。为了隔离这个倍增的高电压信号，分压器用于将高压部分与集成电路振荡器核心的输入和输出（I / O）隔离开来。倍增电压产生适合于触针信号传输的高电压信号。在反馈路径中使用分压和相对较低的电压来稳定振荡器核心的操作。

87. 发明授权

US5329209A Self-oscillating circuit for driving a gas discharge lamp, particularly for use on board a motor vehicle 失效
标题翻译：用于驱动气体放电灯的自振荡电路，特别用于机动车辆上
公开(公告)号：US5329209A
公开(公告)日：1994-07-12
申请号：US980589
申请日：1992-11-23
申请人： Andrea Nepote
发明人： Andrea Nepote
IPC分类号： B60Q1/04 , H02M7/538 , H03B5/08 , H05B41/288 , H05B37/02
CPC分类号： H05B41/2885 , H02M7/53806 , Y02B20/202 , Y10S315/07
摘要： The circuit including a capacitor which is alternately discharged and charged in synchronism with the signal which develops across the terminals of a resistor operating to detect the current in the lamp. A sawtooth wave form is thus obtained, which is compared with a threshold level which is varied in dependence on the current which it is necessary to provide to the lamp. On the basis of this comparison logic signals are produced which are utilized to control the power switches of the inverter which controls the lamp.
摘要翻译：该电路包括电容器，该电容器与在操作以检测灯中的电流的电阻器的端子两端产生的信号同步地进行充电。因此获得锯齿波形，其与根据需要提供给灯的电流而变化的阈值水平进行比较。基于该比较，产生用于控制控制灯的逆变器的功率开关的逻辑信号。

88. 发明授权

US4972438A Self-oscillating transmitter 失效
标题翻译：自振发射机
公开(公告)号：US4972438A
公开(公告)日：1990-11-20
申请号：US391078
申请日：1989-08-08
申请人： Sergiu Silvian
发明人： Sergiu Silvian
IPC分类号： A61N1/08 , A61N1/362 , H03B5/08 , H04B1/04
CPC分类号： H03B5/08
摘要： A device for use as a self-oscillating Class D transmitter is disclosed which uses feedback to maintain the oscillation at the resonant frequency of the device, thereby optimizing the efficiency of operation and overcoming the frequency mismatching inherent in previously known transmitters. The device uses a series LC combination which is driven by a comparator and a tri-state logic driver, with a feedback loop using a differentiator used to switch the polarity of the square wave generator. The system thus self-oscillates at the resonant frequency of the capacitor and inductor, even when the inductance of the inductor is varied by the inductor coming into close proximity to another inductor.

89. 发明授权

US4779063A Oscillator with feedback loop including delay circuit 失效
标题翻译：具有反馈回路的振荡器，包括延迟电路
公开(公告)号：US4779063A
公开(公告)日：1988-10-18
申请号：US7459
申请日：1987-01-28
申请人： Hideo Nagaoka
发明人： Hideo Nagaoka
IPC分类号： H03K12/00 , H03B5/06 , H03B5/08 , H03K3/03 , H03L7/24 , H03B5/20
CPC分类号： H03L7/24 , H03B5/08 , H03K3/03 , H03B2200/0046
摘要： An oscillator comprising a delay circuit having an input terminal and an output terminal, and a tristate inverter having an input connected to the output terminal of the delay circuit and an output connected to the input terminal of the delay circuit. This tristate inverter is adapted to be switched by a control signal between an operable condition and an inoperable condition. A wave shaping inverter is connected to the output of the tristate inverter to generate a shaped pulse signal. Further, there is provided at least one tristate inverter having an input directly connected to an output of the tristate inverter itself so that it can generate a predetermined potential corresponding to the threshold of the tristate inverter itself. This voltage generating tristate inverter is connected at its output terminal to a selected one of the input and output terminals of the delay circuit. This voltage generating tristate inverter is adapted to be put in response to the control signal, when the first tristate inverter is put in the operable condition, in such a biasing mode as to generate the above predetermined voltage at the output terminal, and when the first tristate inverter is put in the operable condition, in such a floating mode as to bring its output terminal into a floating condition, so that the first tristate inverter oscillates because of a feedback given by the delay circuit.
摘要翻译：一种振荡器，包括具有输入端和输出端的延迟电路，以及具有连接到延迟电路的输出端的输入的三态反相器和连接到延迟电路的输入端的输出。该三态逆变器适于通过可操作状态和不可操作状态之间的控制信号切换。波形整形逆变器连接到三态逆变器的输出端，以产生成形脉冲信号。此外，提供至少一个三态逆变器，其具有直接连接到三态逆变器本身的输出的输入，使得其可以产生对应于三态逆变器本身的阈值的预定电位。该电压产生三态逆变器在其输出端子连接到延迟电路的输入和输出端子中的一个。该电压产生三态逆变器适于在第一三态逆变器处于可操作状态时响应于控制信号，以这种偏置模式输出以在输出端产生上述预定电压，并且当第一三态逆变器处于可操作状态，以这种浮动模式使其输出端处于浮置状态，使得第一三态反相器由于延迟电路给出的反馈而振荡。

90. 发明授权

US4617531A Directly modulated microwave oscillator having adjustable load coupling 失效
标题翻译：具有可调节负载耦合的直接调制微波振荡器
公开(公告)号：US4617531A
公开(公告)日：1986-10-14
申请号：US775926
申请日：1985-09-13
申请人： Daniel P. Bowlds , Edward B. Foster
发明人： Daniel P. Bowlds , Edward B. Foster
IPC分类号： H03B9/14 , H03C3/22 , H03B5/08
CPC分类号： H03B9/141 , H03C3/22
摘要： A directly modulated microwave source for use in communications equipment is disclosed. The arrangement, fabricated in an open ended waveguide comprises an oscillator section operating in the TE.sub.101 mode and an impedance matching section providing adjustable coupling to a load. A suitable active element is a Gunn diode, post mounted in proximity to the closed end of the waveguide for H field coupling. Modulation in frequency or phase is achieved by a varactor diode, also post mounted, positioned approximately 2/3 of the length of the waveguide from the closed end. A vertically adjusted post for the load coupling adjustment, is placed adjacent the varactor post, but nearer the opening. The two adjacent posts define the boundary between sections and provide H field coupling to the varactor diode. Temperature stabilization means and frequency tuning means are located respectively on the upper and lower surfaces of the waveguide at anti-nodial portions of the oscillator section.
摘要翻译：公开了一种用于通信设备的直接调制微波源。在开口波导中制造的布置包括以TE101模式操作的振荡器部分和提供与负载的可调耦合的阻抗匹配部分。合适的有源元件是耿氏二极管，后置安装在波导的闭合端附近用于H场耦合。在频率或相位上的调制是通过一个变容二极管实现的，该变容二极管也是柱安装的，位于离开封闭端的波导长度的大约2/3处。负载耦合调整的垂直调整柱位于变位器柱附近，但靠近开口。两个相邻的柱定义了部分之间的边界，并提供与变容二极管的H场耦合。温度稳定装置和频率调谐装置分别位于波导的上表面和下表面，在振荡器部分的抗零点处。

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