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1. 发明授权

US06696871B2 Circuit for controlling a power MOS transistor and detecting a load in series with the transistor 有权
标题翻译：用于控制功率MOS晶体管和检测与晶体管串联的负载的电路
公开(公告)号：US06696871B2
公开(公告)日：2004-02-24
申请号：US10165088
申请日：2002-06-06
申请人： Philippe Bienvenu , Antoine Pavlin
发明人： Philippe Bienvenu , Antoine Pavlin
IPC分类号： H03K406
CPC分类号： H03K17/063 , H03K17/18
摘要： The detection of the presence of a load associated with a power MOS transistor integrated with its control circuit using a filtering time delay in generating a detection signal with respect to the occurrence of a turn-off control order of the power transistor, and where the filtering time delay is controlled with the power transistor switching time.
摘要翻译：使用滤波时间延迟来检测与其控制电路集成的功率MOS晶体管相关联的负载，以产生关于功率晶体管的关断控制次序的发生的检测信号，并且其中滤波时间延迟由功率晶体管切换时间控制。

2. 发明授权

US06661263B2 Voltage sequencing arrangements providing first and second voltages sequenced to each other in time 失效
标题翻译：提供在时间上相互排序的第一和第二电压的电压排序装置
公开(公告)号：US06661263B2
公开(公告)日：2003-12-09
申请号：US09745413
申请日：2000-12-26
申请人： Bruce W. Rose , Michael A. Stapleton , Jeffrey J. Olsen
发明人： Bruce W. Rose , Michael A. Stapleton , Jeffrey J. Olsen
IPC分类号： H03K406
CPC分类号： G06F1/26 , H02M2001/009
摘要： A voltage sequencer includes an input terminal and an output terminal and a control element connected between the input an output terminals. A capacitive element is connected between the output terminal and a first voltage and a resistive element is connected between the output terminal and a second voltage. The control element selectively controls charging and discharging of the capacitive element such that, upon the voltage at the input terminal increasing from the first voltage to a nominal value, the output terminal voltage increases to a nominal value in a first predetermined period of time and upon the voltage at the input terminal decreasing from the nominal value to the first voltage, the output terminal voltage decreases to the first voltage value in a second predetermined period of time, the first predetermined period of time being different from, for example, substantially greater than, the second predetermined period of time. The capacitive element may be a capacitor and the resistive element may be a resistor. The first voltage may be a ground potential while the second voltage may be a positive potential with respect to the first voltage.
摘要翻译：电压定序器包括输入端子和输出端子以及连接在输入端子之间的控制元件。电容元件连接在输出端和第一电压之间，电阻元件连接在输出端和第二电压之间。控制元件选择性地控制电容元件的充电和放电，使得当输入端子处的电压从第一电压增加到标称值时，输出端电压在第一预定时间段内增加到标称值，并且在输入端子处的电压从标称值减小到第一电压，输出端子电压在第二预定时间段内降低到第一电压值，第一预定时间段不同于例如基本上大于，第二预定时间段。电容元件可以是电容器，电阻元件可以是电阻器。第一电压可以是接地电位，而第二电压可以是相对于第一电压的正电位。

3. 发明授权

US06316972B1 Slope generator 失效
标题翻译：斜坡发电机
公开(公告)号：US06316972B1
公开(公告)日：2001-11-13
申请号：US09453771
申请日：1999-12-02
申请人： Gerd Koffmane , Alexander Lazar
发明人： Gerd Koffmane , Alexander Lazar
IPC分类号： H03K406
CPC分类号： H03K17/04113 , H03K4/94
摘要： A slope generator generates, in response to an input signal, a slope between a first and a second voltage level of an output voltage at an output node. The slope generator comprises a capacitor coupled to the output node, a first current source for providing a first current to the output node, and a second current source for providing a second current to the output node controlled by a first current switch. A control electrode of a first current path of the first current switch is coupled to and controlled by the input signal, a second current path is coupled to the output node, and the first current switch provides the first and the second voltage levels, or corresponding voltage levels derived therefrom, to the output node.
摘要翻译：斜率发生器响应于输入信号产生在输出节点处的输出电压的第一和第二电压电平之间的斜率。斜坡发生器包括耦合到输出节点的电容器，用于向输出节点提供第一电流的第一电流源和用于向由第一电流开关控制的输出节点提供第二电流的第二电流源。第一电流开关的第一电流路径的控制电极耦合到输入信号并由输入信号控制，第二电流路径耦合到输出节点，并且第一电流开关提供第一和第二电压电平，或对应的从其导出的电压电平输出到输出节点。

4. 发明授权

US06819154B2 Constant deadtime control in a feed forward enabled pulse width modulator controller 失效
公开(公告)号：US06819154B2
公开(公告)日：2004-11-16
申请号：US10357066
申请日：2003-02-03
申请人： Fred F. Greenfeld
发明人： Fred F. Greenfeld
IPC分类号： H03K406
CPC分类号： H02M1/38 , H03K3/0231 , H03K7/08
摘要： A feed forward pulse width modulator compares a ramp signal with a control voltage to control respective states of a pulse width modulation signal. A respective cycle of the ramp signal is generated by charging a capacitor with a charging current that is proportional to input voltage until the voltage across the capacitor reaches a peak threshold that is also proportional to the input voltage. The capacitor is thereupon discharged with a discharging current proportional to the input voltage until the voltage across the capacitor reaches a (non-zero) valley threshold.

5. 发明授权

US06384645B2 Integrated generator of a slow voltage ramp 有权
标题翻译：集成发电机的缓慢电压斜坡
公开(公告)号：US06384645B2
公开(公告)日：2002-05-07
申请号：US09824534
申请日：2001-04-02
申请人： Davide Brambilla , Mauro Cleris
发明人： Davide Brambilla , Mauro Cleris
IPC分类号： H03K406
CPC分类号： H03K4/06 , H03K4/023
摘要： An integrated circuit for producing a small slope voltage ramp includes a circuit for generating a periodic triangular current signal, and a circuit for generating, at the beginning of each period of the triangular signal, a pulse of a certain duration which is much smaller than the period of the triangular signal. A control loop is input at a node with the triangular current signal and produces the desired slow voltage ramp on the output node. The control loop includes a first hold circuit coupled to the input node via a first switch controlled by the pulse, and a transconductance operational amplifier, whose inputs are respectively coupled to the input node and to the output node. Also, the control loop includes a second hold circuit coupled to the output of the operational transconductance amplifier via a second switch controlled in a complementary manner with respect to the first switch. A resistor of a much smaller value than the ratio between the period of the triangular signal and the capacitance of the storage capacitor of the first hold circuit is connected between the output of the second hold circuit and the input node.
摘要翻译：用于产生小斜坡电压斜坡的集成电路包括用于产生周期性三角形电流信号的电路，以及用于在三角形信号的每个周期的开始处产生一定长度的脉冲，该脉冲远小于三角形信号的周期。在具有三角形电流信号的节点处输入控制回路，并在输出节点上产生所需的慢速电压斜坡。控制回路包括通过由脉冲控制的第一开关耦合到输入节点的第一保持电路和跨导运算放大器，其输入分别耦合到输入节点和输出节点。而且，控制回路包括第二保持电路，该第二保持电路通过相对于第一开关以互补方式控制的第二开关耦合到运算跨导放大器的输出端。在第二保持电路的输出和输入节点之间连接有比三角形信号的周期和第一保持电路的存储电容的电容之间的比值小得多的电阻。

6. 发明授权

US06356125B1 Ramp generator 失效
标题翻译：斜坡发电机
公开(公告)号：US06356125B1
公开(公告)日：2002-03-12
申请号：US09543969
申请日：2000-04-07
申请人： Jonathan Mark Greenwood
发明人： Jonathan Mark Greenwood
IPC分类号： H03K406
CPC分类号： H04N5/275 , H04N5/2622 , H04N5/265
摘要： A ramp generator for use in a video mixing system to produce various transition effects between edited video frames. The ramp generator produces a ramp signal R according to the equation R=Ah+Bv+C. The ramp signal R corresponds to a video frame comprised of v video lines (where v is an integer from 0 to m), each video line having h pixels (where h is an integer from 0 to n), and where A, B, and C are coefficients. Multiple ramp signals can be combined to a ‘solid’ signal. Solid signals can be used to generate masks or wipe patterns. Each ramp be edge modulated before combining into a solid signal. A solid signal can also be solid modulated.
摘要翻译：用于视频混合系统中的斜坡发生器，用于在编辑的视频帧之间产生各种过渡效果。斜坡发生器根据等式R = Ah + Bv + C产生斜坡信号R. 斜坡信号R对应于由v个视频行（其中v是从0到m的整数）组成的视频帧，每个视频行具有h个像素（其中h是从0到n的整数），并且其中A，B，和C是系数。多个斜坡信号可以组合为“固体”信号，固体信号可用于生成掩模或擦除图案，每个斜坡在组合成固体信号之前进行边缘调制，固态信号也可以实时调制。

7. 发明授权

US06603335B1 Ramp circuit to reduce spectral regrowth of power amplifiers 有权
标题翻译：斜坡电路减少功率放大器的频谱再生长
公开(公告)号：US06603335B1
公开(公告)日：2003-08-05
申请号：US10167633
申请日：2002-06-11
申请人： Phil Macphail , Wei An
发明人： Phil Macphail , Wei An
IPC分类号： H03K406
CPC分类号： H03K17/163
摘要： A circuit for controlling a high frequency power amplifier for amplifying a signal for wireless transmission is disclosed. The circuit provides a control signal to the power amplifier at an output port thereof. The control signal has properties of rise time and fall time, where a delayed transition in this signal is based on charging and discharging of the capacitor using two current mirror circuits in order to provide the delayed transition. An advantage lies in that the time of this delayed transition is dependent primarily upon the current mirrors and substantially other than dependent upon the RC time constant of the circuit.
摘要翻译：公开了一种用于控制用于放大无线传输信号的高频功率放大器的电路。电路在其输出端口向功率放大器提供控制信号。控制信号具有上升时间和下降时间的特性，其中该信号的延迟转换基于使用两个电流镜像电路的电容器的充电和放电以提供延迟的转换。优点在于，该延迟转换的时间主要取决于电流镜，并且基本上不依赖于电路的RC时间常数。

8. 发明授权

US06600349B2 Waveform generator, display device and electronic apparatus 有权
公开(公告)号：US06600349B2
公开(公告)日：2003-07-29
申请号：US09962209
申请日：2001-09-26
申请人： Simon Tam
发明人： Simon Tam
IPC分类号： H03K406
CPC分类号： H03K4/023
摘要： A waveform generator comprising an input terminal connected to one terminal of a first capacitor, a first switch connecting the other terminal of the first capacitor to one terminal of a second capacitor, a second switch connected for operatively discharging the second capacitor, the said one terminal of the second capacitor also being connected to the input of a buffer the output of which is connected to the output of the generator, and a third switch connected so as operatively to feed back the output of the buffer to the other terminal of the first capacitor. The generator can be implemented using polysilicon TFTs. The invention also relates to a display device and to electronic apparatus which include at least one of the described waveform generators.

9. 发明授权

US06194925B1 Time interval measurement system incorporating a linear ramp generation circuit 失效
公开(公告)号：US06194925B1
公开(公告)日：2001-02-27
申请号：US09039344
申请日：1998-03-13
申请人： Christopher Kimsal , Jan B. Wilstrup
发明人： Christopher Kimsal , Jan B. Wilstrup
IPC分类号： H03K406
CPC分类号： G01R29/0273 , G01R29/02 , G01R29/26
摘要： A linear ramp generating and control circuit finding particular applicability in a time interval measurement system. The linear ramp circuit includes a hold capacitor which may be linearly discharged during one operating mode of the circuit by coupling a constant current source to the capacitor. The voltage on the hold capacitor is linearly discharged away from a baseline voltage level to a data voltage level which is subsequently passed to an analog-to-digital converter of the time interval measurement system for further processing. The hold capacitor voltage is returned to the baseline voltage level during a recovery mode of circuit operation by a recovery or recharge network. The recharge network may include an active-feedback circuit which implements an approximately second-order voltage response to the hold capacitor during the recovery mode of operation. The circuit may also include a composite amplifier for buffering the hold capacitor voltage level to a circuit output during a hold mode of circuit operation. The effect of this invention is that the errors such as drift, signal noise, and baseline voltage instability can be minimized.

10. 发明授权

US06169433A Method and apparatus using feedback to generate a ramped voltage with controlled maximum amplitude 有权
标题翻译：使用反馈产生具有受控最大振幅的斜坡电压的方法和装置
公开(公告)号：US06169433A
公开(公告)日：2001-01-02
申请号：US09365968
申请日：1999-08-02
申请人： Douglas Robert Farrenkopf
发明人： Douglas Robert Farrenkopf
IPC分类号： H03K406
CPC分类号： H03K4/50
摘要： A method and circuit which employs negative feedback to generate a ramped voltage having well controlled maximum amplitude. In preferred embodiments, the invention is an integrated circuit (or portion of an integrated circuit) which generates a ramped voltage with controlled maximum amplitude in a manner independent of process and temperature variations in implementing and operating the circuit. Preferably, the circuit includes an amplifier having an input coupled to receive a reference signal, an output coupled to ramped voltage generator, and another input coupled to the output of the ramped voltage generator, thus implementing a negative feedback loop in which the amplifier asserts feedback to control the maximum amplitude of the ramped voltage generated by the ramped voltage generator. Preferably, the ramped voltage generator periodically charges and discharges a capacitor to generate the ramped voltage, the amplifier is a transconductance amplifier which is periodically enabled (for a portion of each charging cycle of the capacitor) in response to a clock signal, a one-shot circuit produces a delayed voltage pulse train in response to the clock signal, and the ramped voltage generator receives the delayed voltage pulse train and discharges the capacitor in response to each pulse of the delayed voltage pulse train.
摘要翻译：采用负反馈以产生具有良好控制的最大振幅的斜坡电压的方法和电路。在优选实施例中，本发明是集成电路（或集成电路的一部分），其以独立于实现和操作电路中的过程和温度变化的方式产生具有受控最大振幅的斜坡电压。优选地，电路包括具有耦合以接收参考信号的输入的放大器，耦合到斜坡电压发生器的输出以及耦合到斜坡电压发生器的输出的另一输入，从而实现负反馈回路，其中放大器确定反馈以控制斜坡电压发生器产生的斜坡电压的最大振幅。优选地，斜坡电压发生器周期性地对电容器进行充电和放电以产生斜坡电压，放大器是跨导放大器，其响应于时钟信号周期性地使能（对于电容器的每个充电周期的一部分）响应于时钟信号产生延迟电压脉冲序列，并且斜坡电压发生器接收延迟的电压脉冲串并响应于延迟的电压脉冲串的每个脉冲放电电容器。

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