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    • 6. 发明授权
    • Method and system for multiplexing telephone line circuits to highway
lines
    • 电话线电路到高速公路线路的方法和系统
    • US4998249A
    • 1991-03-05
    • US264268
    • 1988-10-28
    • Robert B. BennettRobert J. Hager
    • Robert B. BennettRobert J. Hager
    • H04J3/16H04Q11/04
    • H04Q11/04H04J3/1647
    • A method for multiplexing data between a set of line circuits and a set of time division multiplexed highway lines connected to a central switch. Line circuits are organized into clusters of fixed numbers of circuits. Groups of four clusters send data to and receive data from a single multiplexer/demultiplexer. One or more multiplexers may be connected to the same set of highways. A single master processor performs all of the highway and time slot assignments for the network. These assignments are made so that each cluster will transmit or receive during consecutive time slots on a single highway line. The multiplexer is capable of providing conductivity between any cluster and any of the highways. The highway and time slot assignments for each cluster may be altered by reprogramming the multiplexer.
    • 一种用于在一组线路电路和连接到中央交换机的一组时分复用的公路线路之间复用数据的方法。 线路电路被组织成固定数量的电路的群集。 四个组的组向单个多路复用器/解复用器发送数据并从其接收数据。 一个或多个多路复用器可以连接到同一组高速公路。 单个主处理器执行网络的所有高速公路和时隙分配。 进行这些分配,使得每个集群将在单个高速公路线上的连续时隙期间发送或接收。 多路复用器能够在任何集群和任何高速公路之间提供导电性。 可以通过重新编程多路复用器来改变每个群集的高速公路和时隙分配。
    • 8. 发明授权
    • Method and apparatus for sensing activity for a keyboard and the like
    • 用于感测键盘等的活动的方法和装置
    • US4649784A
    • 1987-03-17
    • US696693
    • 1985-01-31
    • Robert G. FulksRobert J. Hager
    • Robert G. FulksRobert J. Hager
    • G10H1/055H01H13/785G10H1/34
    • H01H13/785G10H1/0556H01H2201/036Y10S84/07
    • Apparatus and method for the monitoring of the manipulation of the keys of an instrument comprises monitoring apparatus which takes the form of a pressure sensing device, associated with each key, that can be fabricated in a configuration compatible with the instrument. According to one embodiment, the pressure sensing devices can be arranged so that the monitoring apparatus can be positioned on a balance rail of a piano keyboard. In this embodiment, the monitoring configuration can be fabricated and conveniently retrofitted to a standard keyboard. The pressure sensing device comprises a resistive element, a conducting element, and a force transducer ink layer separating the resistive and conducting elements. The resistance of the resistive element is monitored and when pressure is applied to the pressure sensing device, a change in resistance can be measured. Because the resistance is a function of pressure, the amount of pressure used to activate the key can be determined.
    • 用于监测仪器键的操作的装置和方法包括监测装置,其采用与每个键相关联的压力感测装置的形式,其可以以与仪器兼容的构造制造。 根据一个实施例,压力感测装置可以被布置成使得监测装置可以位于钢琴键盘的平衡轨道上。 在该实施例中,可以制造监视配置并且方便地改装到标准键盘。 压力感测装置包括电阻元件,导电元件和分离电阻元件和导电元件的力传感器油墨层。 监测电阻元件的电阻,当压力传感装置施加压力时,可以测量电阻的变化。 因为电阻是压力的函数,所以可以确定用于激活钥匙的压力量。