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    • 6. 发明授权
    • Voltage level shifting circuit, a differential input stage circuit, and a method for providing a level shifted differential signal to a differential input buffer circuit
    • 电压电平移位电路,差分输入级电路以及用于向差分输入缓冲电路提供电平移位差分信号的方法
    • US07453305B2
    • 2008-11-18
    • US11494168
    • 2006-07-27
    • Brian Anthony MoaneColm Patrick RonanJohn Twomey
    • Brian Anthony MoaneColm Patrick RonanJohn Twomey
    • H03L5/00
    • H03F3/45475H03F2203/45136H03F2203/45148H03F2203/45151H03F2203/45544H03F2203/45548H03F2203/45576H03F2203/45581H03F2203/45586
    • A voltage level shifting circuit (5) for shifting the common mode voltage of a differential signal to be within the working range of a differential input buffer circuit (3) comprises a first resistive voltage divider circuit (18) coupled between a first input terminal (10) and a voltage reference terminal (15) for receiving a voltage reference to which the common mode voltage of the level shifted differential signal is to be referenced, and a second resistive voltage divider circuit (18) coupled between a second input terminal (11) and the voltage reference terminal (15). The differential signal is applied to the first and second terminals (10,11), and the level shifted differential signal is produced on first and second output taps (17,19) of the first and second resistive voltage divider circuits (16,18) with the common mode of the level shifted differential signal referenced to the voltage reference applied to the voltage reference terminal (15). First and second high frequency low impedance circuits (22,23) couple the first and second input terminals (10,11) to the first and second output taps (17,19) to provide respective direct current blocked high frequency low impedance paths for the differential signal to first and second differential inputs (7,8) of the differential input buffer circuit (3) for minimizing propagation delays resulting from low pass filters created by the interaction of the first and second resistive voltage divider circuits (16,18) with first and second intrinsic input capacitance (Cb1,Cb2) coupling the first and second differential inputs (7,8) of the differential input buffer circuit (3) to ground.
    • 用于将差分信号的共模电压移动到差分输入缓冲电路(3)的工作范围内的电压电平移位电路(5)包括:第一电阻分压电路(18),耦合在第一输入端( 10)和用于接收要参考电平移位差分信号的共模电压的参考电压的电压参考端子(15)以及耦合在第二输入端子(11)之间的第二电阻分压器电路(18) )和电压参考端子(15)。 差分信号被施加到第一和第二端子(10,11),并且在第一和第二电阻分压器电路(16,18)的第一和第二输出抽头(17,19)上产生电平移位的差分信号, 其中电平移位的差分信号的参考模式参考施加到电压参考端子(15)的电压参考。 第一和第二高频低阻抗电路(22,23)将第一和第二输入端子(10,11)耦合到第一和第二输出抽头(17,19),以提供相应的直流阻断的高频低阻抗路径,用于 差分信号到差分输入缓冲电路(3)的第一和第二差分输入(7,8),用于最小化由第一和第二电阻分压器电路(16,18)与 将差分输入缓冲电路(3)的第一和第二差分输入(7,8)耦合到地的第一和第二固有输入电容(C b1,C b2) 。
    • 7. 发明授权
    • Connecting ethernet based system on a chip integrated circuits in a ring topology
    • 在环形拓扑结构的芯片集成电路上连接基于以太网的系统
    • US07339941B2
    • 2008-03-04
    • US10778696
    • 2004-02-13
    • John Twomey
    • John Twomey
    • H04L12/28
    • H04L12/4637H04L12/42H04L45/34
    • A plurality of System On a Chip (SOC) integrated circuits, a media that intercouples the plurality of SOC integrated circuits to form at least one SOC LAN ring, and a routing address scheme. Each SOC integrated circuit includes at least one processor, a system bus, a memory controller, at least two Local Area Network (LAN) ports, and a receive channel selection block. The media intercouples the LAN ports of the plurality of SOC integrated circuits to form at least one SOC LAN ring. The routing address scheme serves in routing of data packets on the at least one SOC LAN ring. A routing address of the routing address scheme has a first portion that identifies a source SOC integrated circuit, a second portion that identifies a destination SOC integrated circuit, and a third portion that comprises a LAN address and data.
    • 多个片上系统(SOC)集成电路,将多个SOC集成电路互连以形成至少一个SOC LAN环的介质和路由地址方案。 每个SOC集成电路包括至少一个处理器,系统总线,存储器控制器,至少两个局域​​网(LAN)端口和接收通道选择块。 介质互连多个SOC集成电路的LAN端口以形成至少一个SOC LAN环。 所述路由地址方案用于在所述至少一个SOC LAN环上路由数据分组。 路由地址方案的路由地址具有识别源SOC集成电路的第一部分,识别目的地SOC集成电路的第二部分和包括LAN地址和数据的第三部分。
    • 8. 发明申请
    • Connecting ethernet based system on a chip integrated circuits in a ring topology
    • 在环形拓扑结构的芯片集成电路上连接基于以太网的系统
    • US20050180437A1
    • 2005-08-18
    • US10778696
    • 2004-02-13
    • John Twomey
    • John Twomey
    • H04L12/413H04L12/42H04L12/46H04L12/56H04L12/28
    • H04L12/4637H04L12/42H04L45/34
    • A plurality of System On a Chip (SOC) integrated circuits, a media that intercouples the plurality of SOC integrated circuits to form at least one SOC LAN ring, and a routing address scheme. Each SOC integrated circuit includes at least one processor, a system bus, a memory controller, at least two Local Area Network (LAN) ports, and a receive channel selection block. The media intercouples the LAN ports of the plurality of SOC integrated circuits to form at least one SOC LAN ring. The routing address scheme serves in routing of data packets on the at least one SOC LAN ring. A routing address of the routing address scheme has a first portion that identifies a source SOC integrated circuit, a second portion that identifies a destination SOC integrated circuit, and a third portion that comprises a LAN address and data.
    • 多个片上系统(SOC)集成电路,将多个SOC集成电路互连以形成至少一个SOC LAN环的介质和路由地址方案。 每个SOC集成电路包括至少一个处理器,系统总线,存储器控制器,至少两个局域​​网(LAN)端口和接收通道选择块。 介质互连多个SOC集成电路的LAN端口以形成至少一个SOC LAN环。 所述路由地址方案用于在所述至少一个SOC LAN环上路由数据分组。 路由地址方案的路由地址具有识别源SOC集成电路的第一部分,识别目的地SOC集成电路的第二部分和包括LAN地址和数据的第三部分。
    • 9. 发明授权
    • Output stage interface circuit for outputting digital data onto a data bus, and a method for operating an output stage interface circuit
    • 用于将数字数据输出到数据总线上的输出级接口电路,以及用于操作输出级接口电路的方法
    • US07570089B2
    • 2009-08-04
    • US11589020
    • 2006-10-27
    • Colm Patrick RonanJohn TwomeyBrian Anthony MoaneLiam Joseph White
    • Colm Patrick RonanJohn TwomeyBrian Anthony MoaneLiam Joseph White
    • H03B1/00
    • H03K19/00315H03K19/003H03K19/017518
    • An output stage interface circuit for interfacing with a data bus, comprising first and second rails for receiving respectively a high voltage and a low voltage from a power supply; a data output terminal; a first main switch element coupled between said terminal and the first rail and comprising a first main MOS device having a gate and an independently configurable back gate, and responsive to a first data control signal applied to the gate pulling the voltage on the data output terminal toward the first rail voltage; and a first control circuit responsive to the voltage on said terminal being pulled from a first state across a first voltage reference to a second state for coupling said back gate to said terminal and permitting coupling of the gate of said MOS device to said terminal, the first main MOS device presenting a high impedance on the terminal when its voltage is pulled to the second state.
    • 一种用于与数据总线接口的输出级接口电路,包括用于从电源分别接收高电压和低电压的第一和第二轨道; 数据输出端; 耦合在所述端子和所述第一导轨之间的第一主开关元件,并且包括具有栅极和独立可配置的后栅极的第一主MOS器件,并且响应于施加到所述栅极的第一数据控制信号,所述第一数据控制信号拉动所述数据输出端子上的电压 朝向第一轨道电压; 并且响应于所述端子上的电压的第一控制电路被从第一电压基准拉出到第二状态,以将所述后栅极耦合到所述端子,并允许所述MOS器件的栅极与所述端子耦合, 当其电压被拉到第二状态时,在端子上呈现高阻抗的第一主MOS器件。