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    • 12. 发明申请
    • SELF-TERMINATING CURRENT MIRROR TRANSCEIVER LOGIC
    • 自动终止电流收发器逻辑
    • WO02058240A1
    • 2002-07-25
    • PCT/US2002/001613
    • 2002-01-22
    • H03K19/0175H04L25/02H03K17/16H03K19/003
    • H04L25/0278H04L25/0282H04L25/0294
    • A self-terminating FET digital logic receiver (14) for impedance-matched interconnection to a transmission line (20) having a uniform characteristic impedance. First and second non-zero current level digital logic signals are received from the transmission line at an input terminal (22). A first current mirror FET (RM1) connected to the input terminal is configured to provide nonlinear current/voltage characteristics between the first and second current levels which approximate the characteristic impedance of the transmission line. The current of the digital logic signals is therefore absorbed by the first FET to minimize signal reflections on the transmission line. A second FET (RM2) is connected to the first FET to provide a mirror current having current levels proportional to the current levels of the digital logic signals. A load (RM3, RM4) is connected to the second FET produces voltage level signals representative of the digital logic signals.
    • 一种用于与具有均匀特性阻抗的传输线(20)进行阻抗匹配互连的自终端FET数字逻辑接收器(14)。 在输入端(22)从传输线接收第一和第二非零电流电平数字逻辑信号。 连接到输入端子的第一电流镜面FET(RM1)被配置为在接近传输线的特性阻抗的第一和第二电流水平之间提供非线性电流/电压特性。 因此,数字逻辑信号的电流被第一FET吸收,以最小化传输线上的信号反射。 第二FET(RM2)连接到第一FET以提供具有与数字逻辑信号的电流电平成比例的电流电平的镜电流。 连接到第二FET的负载(RM3,RM4)产生代表数字逻辑信号的电压电平信号。
    • 14. 发明申请
    • METHOD AND DEVICE FOR DATA TRANSMISSION
    • 方法和设备进行数据传输
    • WO0044140A2
    • 2000-07-27
    • PCT/CH0000015
    • 2000-01-11
    • METAPHYSICS S AVOCKENHUBER PETERWAGNIERES PHILIPPE
    • VOCKENHUBER PETERWAGNIERES PHILIPPE
    • H04L25/02H04L25/08
    • H04L25/0266H04L25/0282H04L25/085
    • The device is provided with at least one information line (15, 15') for the transmission of information in the form of analog signals which are derived by a switch point or a sensor (8-11) coupled to the information line (15, 15') and fitted with an address detector (18) for reading address signals via a transformer (I4-I7) that converts the analog signals into a proportional current, wherein the transformer (I4-I7) is connectable to the information line (15, 15') by means of a switch (S1-S4) that is activatable by the corresponding address detector (S1-S4). A reference voltage source (13, 13') for the voltage of the information line (15, 15') is also provided and at least one derivation element (C1-C4) for deriving the overvoltages induced by external interferences from the information line (15, 15').
    • 在用于模拟信号,这些信号被转换成电流形式传输信息的方法,该电流强度正比于信号,对应于模拟信号在经由至少一个信息导体(15当前变量电流的形式的信息,15“是 )传送时,电流被测量,并且(在一个比例信号到模拟信号P3)转换。 的信息导体(15,15“)的电压维持在一个参考值,和通过诱导从信息导体(15,15的外部干扰的过电压”分别衍生)。 具有“用于在由至少一个与所述信息导体(15,15提供的模拟信号的形式传输信息的耦合(通过),用于读出具有地址检测器的地址的信号。这些优选的装置的至少一个的信息导体(15,15)” 18)切换并提供给传感器(8-11)(通过电流互感器I4-I7)导出,其将模拟信号转换成上(成比例的电流,其中所述电流互感器(I4-I7)由相应的地址检测器18的装置) 激活开关(S1-S4)与数据线(15,15“)是可连接的。 另外,“用于信息导体(15,15的电压)被提供,并用于从外部噪声引起的过电压导出从信息管理器的至少一个转向元件(C1-C4)的参考电压源(13,13)”(15 '15)存在 ,
    • 15. 发明申请
    • HIGH SPEED BUS SYSTEM
    • 高速总线系统
    • WO1993018462A1
    • 1993-09-16
    • PCT/US1993001816
    • 1993-03-03
    • RAMBUS, INC.
    • RAMBUS, INC.HOROWITZ, Mark, AlanLEE, Winston, K., M.
    • G06F13/40
    • H04L25/0298G06F13/4072H03K3/356043H04L25/0282Y02D10/14Y02D10/151
    • In the high speed bus system of the present invention, the bus configuration is one in which all master devices are clustered at one end of an unterminated end of the bus. The slaves are located along the remaining length of the bus and the opposite end of the transmission line of the bus is terminated. By eliminating the termination resistor at the end of the bus where the master devices are located the required drive current needed to produce a given output swing is reduced. The bus drivers and receivers are CMOS integrated circuits. The bus of the present invention is operable utilizing small swing signals which enable sufficient implementation of current mode drivers for low impedance bus signals. In particular, the bus input receiver of the present invention comprises a two stage buffered sampler/amplifier which receives a small swing signal from the bus and samples and amplifies the low swing signal to a full swing signal within a single clock cycle using CMOS circuits.
    • 在本发明的高速总线系统中,总线配置是其中所有主设备在总线的未端接端的一端集群的配置。 从站沿着总线的剩余长度定位,并且总线的传输线的相对端终止。 通过消除主设备所在总线末端的终端电阻,减少了产生给定输出摆幅所需的驱动电流。 总线驱动器和接收器是CMOS集成电路。 本发明的总线可利用小的摆动信号进行操作,这使得能够充分实现用于低阻抗总线信号的电流模式驱动器。 特别地,本发明的总线输入接收机包括两级缓冲取样器/放大器,其从总线接收小的摆动信号,并使用CMOS电路在单个时钟周期内对低回波信号采样并放大到全摆幅信号。
    • 19. 发明申请
    • CURRENT TRANSFER LOGIC
    • 电流传输逻辑
    • WO2005055540A3
    • 2005-11-24
    • PCT/US2004037145
    • 2004-11-08
    • PRADHAN PRAVASJU JIANHONG
    • PRADHAN PRAVASJU JIANHONG
    • H04L25/02
    • H04L25/0272H04L25/0278H04L25/0282H04L25/0294
    • A current mode transfer logic system suitable for driving transmission lines is disclosed. In one embodiment a twisted pair transmission line is terminated in its characteristic line impedance. A signal is formed of two unequal currents, preferably of different polarities as well as magnitudes, that are driven down the two lines. The unequal currents are selectively switched between the two lines creating a logic signal of a differential current drive of unequal current magnitudes. The unequal currents are received and shunted from the distal end of each line via diode connected MOS transistors. The MOS transistors are biased to present a low impedance, but an impedance higher than the terminating resistor. The currents are amplified and converted to useable CMOS voltage levels. In another embodiment the twisted pair is replaced by two parallel transmission lines which are terminated in one resistor, equal to the sum of the characteristic impedances of each line. The terminating resistor is connected between the distal signal carrying conductors of each transmission line. The shields or return paths for each line are tied together at the distal and at the proximate (drive) ends of the line.
    • 公开了适用于驱动传输线的电流模式传输逻辑系统。 在一个实施例中,双绞线传输线在其特征线阻抗中终止。 信号由两条不相等的电流形成,优选地具有不同的极性以及在两条线路上被驱动的幅度。 在两条线之间选择性地切换不相等的电流,从而产生不等电流幅值的差动电流驱动的逻辑信号。 通过二极管连接的MOS晶体管,从每条线的远端接收不相等的电流并分流。 MOS晶体管被偏置以呈现低阻抗,但阻抗高于终端电阻器。 电流被放大并转换成可用的CMOS电压电平。 在另一个实施例中,双绞线被两个平行的传输线代替,这两条并行传输线终止于一个电阻器中,等于每条线路的特征阻抗之和。 终端电阻连接在每条传输线的远端信号承载导体之间。 每条线的屏蔽或返回路径在线的远端和近端(驱动)端连接在一起。