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    • 7. 发明授权
    • Reducing electrical noise during bus turnaround in signal transfer systems
    • 在信号传输系统的公交车周转期间减少电气噪声
    • US07164292B2
    • 2007-01-16
    • US10866157
    • 2004-06-12
    • Ralf SchmittXingchao Yuan
    • Ralf SchmittXingchao Yuan
    • H03K19/0175
    • H04L25/0272H03K19/00361
    • Systems and methods for reducing electrical noise generated during bus turnaround in signal transfer systems are provided. These systems include differential drivers having current sources continuously coupled to a signal bus during all operating modes of the drivers. A first transistor of the driver couples a first signal line of the bus to the driver current source and a second transistor of the driver couples a second signal line of the bus to the driver current source. Each transistor receives control signals in accordance with the operating mode of the driver. These control signals continuously and selectively couple the current source to the bus lines in a manner which provides uniform current distribution across the bus during all driver operating modes. The uniform current distribution across the bus minimizes interruptions in driver current dissipation and any effects from self-induced supply noise during signal transfers.
    • 提供了用于减少信号传输系统中总线周转期间产生的电噪声的系统和方法。 这些系统包括在驱动器的所有操作模式期间具有连续耦合到信号总线的电流源的差分驱动器。 驱动器的第一晶体管将总线的第一信号线耦合到驱动器电流源,并且驱动器的第二晶体管将总线的第二信号线耦合到驱动器电流源。 每个晶体管根据驱动器的工作模式接收控制信号。 这些控制信号以在所有驱动器操作模式期间通过总线提供均匀电流分配的方式连续地和选择性地将电流源耦合到总线。 总线上均匀的电流分配可以最大限度地减少驱动器电流损耗的中断,并在信号传输期间产生自感应电源噪声的任何影响。