公开(公告)号：US20030218697A1

公开(公告)日：2003-11-27

申请号：US10136308

申请日：2002-05-02

发明人： Kovacic Stephen J.

IPC分类号： H04N005/50 ,  H03K003/02 ,  H04N007/16 ,  H03B005/32 ,  H04B001/18

CPC分类号： H04B1/28 ,  H03D7/161 ,  H04B1/18 ,  H04N7/102

摘要： A broadband television receiver front end for receiving a broadband RF input signal and outputting an IF output signal is disclosed. A high pass input filter on the front end attenuates carrier signal frequencies that lie below a cut off frequency of said high pass filter. Thereby advantageously allowing for a number of carrier signals to propagate below the cutoff frequency in such a manner that these signals have a decreased effect on television signals propagating within a television signal band. By high pass filtering on the input a low noise amplifier disposed for receiving a filtered signal from the high pass filter does not amplify noise caused by lower frequency carriers. As a result an amplified signal provided to up-conversion and a down-conversion mixers results in an increased immunity to noise in the output IF signal from the front end.

摘要翻译： 公开了用于接收宽带RF输入信号并输出​​IF输出信号的宽带电视接收机前端。 前端的高通输入滤波器衰减低于所述高通滤波器的截止频率的载波信号频率。 从而有利地允许多个载波信号在截止频率之下传播，使得这些信号对在电视信号频带内传播的电视信号具有减小的影响。 通过对输入进行高通滤波，设置用于从高通滤波器接收经滤波的信号的低噪声放大器不会放大由较低频率载波引起的噪声。 结果，提供给上转换的放大信号和下变频混频器导致来自前端的输出IF信号对噪声的增强的抗扰度。

公开(公告)号：US20030020555A1

公开(公告)日：2003-01-30

申请号：US10207177

申请日：2002-07-30

发明人： Yoshihisa Fujimoto

IPC分类号： H03K003/02

CPC分类号： H03H19/004

摘要： A non-inverting-side first switch is formed in a first area on one of sides of a differential amplifier, meanwhile a non-inverting-side second switch is formed in a second area on the other of sides of the differential amplifier, the non-inverting switches being for resetting a non-inverting input terminal of the differential amplifier. Similarly, An inverting-side first switch is formed in the first area, meanwhile an inverting-side second switch is formed in the second area, the inverting switches being for resetting a non-inverting input terminal of the differential amplifier. Further, a non-inverting-side line connecting the non-inverting-side first switch and the non-inverting input terminal, and an inverting-side line connecting the inverting-side first switch and the inverting-side second switch are provided next to each other. A signal line crossing one of the lines is provided so as to cross the other of the lines. This causes interferences from the signal line onto the lines to cancel out each other. As a result, it is possible to realize a switched capacitor circuit capable of attaining improvement in operational accuracy and low electric power consumption or high-speed operation.

摘要翻译： 在差分放大器的一侧的第一区域中形成非反相侧第一开关，同时在差分放大器的另一侧的第二区域中形成非反相侧第二开关，非反相侧第二开关 - 反相开关用于复位差分放大器的非反相输入端。 类似地，在第一区域中形成反相侧第一开关，同时在第二区域中形成反相侧第二开关，反相开关用于复位差分放大器的非反相输入端。 此外，在非反相侧第一开关和非反相输入端子连接的非反相侧线以及连接反相侧第一开关和反相侧第二开关的反相侧配线设置在 彼此。 跨越其中一条线的信号线被设置为跨越另一条线。 这会导致从信号线到线路的干扰彼此抵消。 结果，可以实现能够实现操作精度和低功耗或高速操作的改进的开关电容器电路。

公开(公告)号：US20020075051A1

公开(公告)日：2002-06-20

申请号：US09741938

申请日：2000-12-20

申请人： National Semiconductor Corporation

发明人： James R. Kuo

IPC分类号： H03K003/02

CPC分类号： H04L25/0272 ,  H03K19/00315 ,  H04L25/028 ,  H04L25/0292

摘要： A power-off protection circuit for an LVDS line-driver eliminates initialization problems in a local LVDS driver circuit that are caused by a remote LVDS driver when the local LVDS driver is disabled. The remote LVDS driver may introduce a signal into the substrate of the local LVDS driver when the local LVDS driver is in a power-off mode. A current source in the local LVDS driver couples power from a local power supply node to the local LVDS driver when power is active. A method and protection circuit connects the substrate of the current source to the local power supply when power is active, and decouples the substrate from the local power supply when power is deactivated. The remote LVDS driver cannot cause a false power supply signal in the local LVDS driver since the conduction path is disconnected. A first switching element couples a floating substrate node in the current source to the local power supply when the power is active. A second switching element couples the floating substrate node to a bias line when power is deactivated. The first switching element is deactivated by a rising potential in the floating substrate when the local power supply is in a power-off mode. The rising potential is caused by a signal that is transmitted by the remote LVDS driver. By isolating the floating substrate from the local power supply, false signals are eliminated and initialization problems are avoided.

摘要翻译： 用于LVDS线路驱动器的断电保护电路可以消除本地LVDS驱动器在本地LVDS驱动器禁用时由本地LVDS驱动器电路引起的初始化问题，这是由远程LVDS驱动器引起的。 当本地LVDS驱动器处于断电模式时，远程LVDS驱动器可以将信号引入本地LVDS驱动器的基板。 本地LVDS驱动器中的电流源将电源从本地电源节点耦合到本地LVDS驱动器。 一种方法和保护电路在电源有效时将电流源的基板连接到本地电源，并且在断电时将基板与本地电源分离。 远程LVDS驱动器不会导致本地LVDS驱动器中的虚假电源信号，因为导通路径断开。 当功率有效时，第一开关元件将电流源中的浮动衬底节点耦合到本地电源。 当停电时，第二开关元件将浮动衬底节点耦合到偏置线。 当本地电源处于断电模式时，第一开关元件由浮置衬底中的上升电位去激活。 上升电位是由远程LVDS驱动器传输的信号引起的。 通过将浮置基板与本地电源隔离，可以消除误信号，避免初始化问题。

公开(公告)号：US20040113672A1

公开(公告)日：2004-06-17

申请号：US10729726

申请日：2003-12-05

发明人： Sung-Mo Kang ,  Seung-Moon Yoo

IPC分类号： H03K003/02

CPC分类号： H03K3/012 ,  H03K19/0016

摘要： An integrated circuit is provided which includes a multi-state circuit with a first PMOS transistor and a first NMOS transistor. In an active mode, the multi-state circuit is operable to switch between a first state in which the first PMOS transistor is turned on and the first NMOS transistor is turned off and a second state in which the first PMOS transistor is turned off and the first NMOS transistor is turned on. A power source NMOS transistor has a drain connected to a supply voltage terminal and has a source connected to a source of the first PMOS transistor. A power source PMOS transistor has a drain connected to a an effective ground terminal and has a source connected to a source of the first NMOS transistor.

摘要翻译： 提供了一种集成电路，其包括具有第一PMOS晶体管和第一NMOS晶体管的多状态电路。 在活动模式中，多状态电路可操作以在其中第一PMOS晶体管导通并且第一NMOS晶体管截止的第一状态和第一PMOS晶体管截止的第二状态之间切换， 第一个NMOS晶体管导通。 电源NMOS晶体管具有连接到电源电压端子的漏极，并且源极连接到第一PMOS晶体管的源极。 电源PMOS晶体管具有连接到有效接地端子的漏极，并且源极连接到第一NMOS晶体管的源极。

公开(公告)号：US20030193358A1

公开(公告)日：2003-10-16

申请号：US10413814

申请日：2003-04-15

发明人： Aaron Nygren

IPC分类号： H03K003/02

CPC分类号： G11C7/14 ,  H03K5/082 ,  H04L25/061

摘要： A method and a device generate a reference voltage for discriminating between the logic states of a data signal received at a receiving end. A transmitting device transmits a continuous clock signal with a constant pulse period duration and a symmetrical sequence of low and high clock signal states in such a way that, at the receiver end, the clock signal has the same low and high voltage levels as the received data signal and it is subject to the same system-governed variations as the received data signal. An integrator at the receiver end receives and integrates the clock signal, and the integrated value becomes the reference voltage for the receiver unit.

摘要翻译： 一种方法和装置产生用于鉴别在接收端接收的数据信号的逻辑状态的参考电压。 发送装置以恒定的脉冲周期持续时间和低和高时钟信号状态的对称序列发送连续时钟信号，使得在接收端，时钟信号具有与接收的相同的低和高电压电平 数据信号，并且它受到与接收的数据信号相同的系统控制的变化。 接收端的积分器接收并积分时钟信号，积分值成为接收机单元的参考电压。

公开(公告)号：US20030111669A1

公开(公告)日：2003-06-19

申请号：US10201410

申请日：2002-07-22

发明人： Xijian Lin

IPC分类号： H03K003/02

CPC分类号： H03K3/354 ,  H03K3/011

摘要： An improved relaxation oscillator circuit is provided using conventional CMOS device shunted with a current source (101 and 103) at each load of two cross-coupled gain stages. The improved oscillator uses a clamp voltage reference (134), to control the voltage swing across the charging/discharging capacitor (118). The improvements provide improved speed to power ratio, increased frequency tuning range, and less process and temperature variation effects. A transistor (130) and current source (138) replicate output transistors (110, 114) and current sources (101, 103). An amplifier (132) receives a clamp voltage reference (134) and current from the transistor (130) and current source (138) and functions to provide necessary drive currents to the gates of transistors (110, 114) which drive the outputs (VOR, VOL)

摘要翻译： 使用在两个交叉耦合增益级的每个负载处分流有电流源（101和103）的常规CMOS器件提供改进的张弛振荡器电路。 改进的振荡器使用钳位电压基准（134）来控制跨过充电/放电电容器（118）的电压摆幅。 这些改进提供了改进的功率比率，增加的频率调谐范围，以及较少的过程和温度变化的影响。 晶体管（130）和电流源（138）复制输出晶体管（110,114）和电流源（101,103）。 放大器（132）从晶体管（130）和电流源（138）接收钳位电压基准（134）和电流，并且用于向驱动输出的晶体管（110,114）的栅极提供必要的驱动电流（VOR ，VOL）

公开(公告)号：US20040119517A1

公开(公告)日：2004-06-24

申请号：US10326457

申请日：2002-12-20

发明人： Timothy P. Pauletti ,  John H. Carpenter JR. ,  Benjamin L. Amey

IPC分类号： H03K003/02

CPC分类号： H04L12/40032 ,  H04L2012/40215 ,  H04L2012/40273

摘要： A wake-up circuit for a ECU on a ECN utilizes two complementary switching transistors which will turn ON when there is a differential voltage between CANH and CANL which will turn ON the transistors to pass a current which will be mirrored over to create a voltage which will switch a comparator or a Schmitt trigger. The two signals are then ORed together to generate a digital wake-up signal that can be utilized by other on-chip circuitry.

摘要翻译： 用于ECN上的ECU的唤醒电路利用两个互补的开关晶体管，当CANH和CANL之间存在差分电压时，该开关晶体管将导通，这将导通晶体管以通过将被镜像的电流，以产生电压 将切换比较器或施密特触发器。 然后将两个信号OR置于一起以产生可被其它片上电路利用的数字唤醒信号。

公开(公告)号：US20040008067A1

公开(公告)日：2004-01-15

申请号：US10194101

申请日：2002-07-12

发明人： Anil Vi. Kumar ,  Jonathan P. Douglas

IPC分类号： H03K003/02

CPC分类号： G06F1/28

摘要： According to some embodiments, a reference voltage signal initially increases with increases in a processor voltage signal and then decreases with a further increase in the processor voltage signal. Moreover, according to some embodiments a comparator circuit generates a power indication signal when a substantially scaled processor voltage signal exceeds a reference voltage signal.

摘要翻译： 根据一些实施例，参考电压信号最初随处理器电压信号的增加而增加，然后随着处理器电压信号的进一步增加而减小。 此外，根据一些实施例，当基本上缩放的处理器电压信号超过参考电压信号时，比较器电路产生功率指示信号。

公开(公告)号：US20040004501A1

公开(公告)日：2004-01-08

申请号：US10381910

申请日：2003-06-09

发明人： Yasuhide Shimizu ,  Keiko Asai

IPC分类号： H03K003/02

CPC分类号： H03K17/223 ,  G06F1/24 ,  H03K2217/0036

摘要： The present invention is relative to a starter circuit for starting and re-starting a main circuit (20) in startup and during the unusual operation of the main circuit. The starter circuit includes a startup signal supplying unit (11) for supplying a stop signal for stopping the operation of the main circuit when the standby signal is at a standby level, supplying a startup signal to a circuit startup node (22) of the main circuit when the standby signal is changed from the standby level to the startup level and for halting the supply of the stop signal. The starter circuit also includes a start controlling means (12) for halting the supply of the startup signal to the startup signal supply unit when the standby signal is in the startup level and the voltage of the voltage monitor node (21) of the main circuit (20) has reached a predetermined value, and a re-start signal generating means (13) for supplying a re-start signal to the circuit startup node (22) of the main circuit when the standby signal is in the startup level and when the voltage of the voltage monitor node (21) of the main circuit is varied to an unusual value.

摘要翻译： 本发明涉及一种启动电路，用于启动和重新启动主电路（20），并且在主电路异常运行期间。 启动电路包括启动信号提供单元（11），用于当待机信号处于待机电平时提供用于停止主电路的操作的停止信号，将启动信号提供给主电路的电路启动节点（22） 当待机信号从待机电平改变到启动电平并停止提供停止信号时，电路。 启动电路还包括启动控制装置（12），用于当待机信号处于启动电平时停止向启动信号提供单元提供启动信号，并且主电路的电压监视节点（21）的电压 （20）已经达到预定值，以及重新启动信号发生装置（13），用于当待机信号处于启动电平时，向主电路的电路启动节点（22）提供重启信号，以及何时 主电路的电压监视节点（21）的电压变化到异常值。

公开(公告)号：US20020190769A1

公开(公告)日：2002-12-19

申请号：US10170858

申请日：2002-06-13

申请人： Delphi Technologies, Inc.

发明人： Norman William Schubring ,  Joseph Vito Mantese ,  Adolph Louis Micheli

IPC分类号： H03K003/13 ,  H03K003/02

CPC分类号： H03K3/02 ,  G01J5/34

摘要： An apparatus for generating an amplified effect in an asymmetrical hysteretic system is disclosed. The asymmetrical hysteretic system comprises a transponent, a bias that externally grades the transponent, an energy source that drives the transponent, and a small stimulus amplified by a gain factor of the transponent. A method for generating an amplified effect in an asymmetrical hysteretic system is also disclosed.

摘要翻译： 公开了一种用于在不对称滞后系统中产生放大效应的装置。 非对称滞后系统包括透射性，外部赋予透射性的偏差，驱动透射体的能量源和通过透射增益因子放大的小刺激。 还公开了一种用于在不对称滞后系统中产生放大效应的方法。