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    • 7. 发明授权
    • Printer power supply
    • 打印机电源
    • US5595446A
    • 1997-01-21
    • US321564
    • 1994-10-12
    • Gordon BarrusRichard E. Schumaker
    • Gordon BarrusRichard E. Schumaker
    • B41J9/36B41J29/38B41J2/30
    • B41J9/36
    • A printer is disclosed of the dot matrix type having a series of hammers with pins that print upon an underlying media, and which are released from magnetic retention by reversing the polarity of a permanent magnet and having electro-mechanical drive circuits and logic circuits. A power supply supplies an output of a voltage level for driving the electro-mechanical circuits connected to a ribbon drive, platen drive, paper feed, shuttle motor, and fans at a given voltage and the hammers at a different voltage. A thermal sensor is connected to a heat sink of the power supply, and to the printer controller to change the rate of printing when pre-established temperatures are sensed.
    • 一种打印机,公开了一种具有与在底层的介质上打印,并且通过反转的永久磁铁的极性,并具有机电驱动电路和逻辑电路从磁性保持被释放销一系列锤的点阵型的。 电源供给的电压电平的输出,用来在不同的电压驱动以给定的电压连接到色带驱动,压盘驱动器,供纸,梭马达和风扇的电动机械电路和锤。 热传感器连接到电源的散热器,并且连接到打印机控制器以在检测到预先建立的温度时改变打印速率。
    • 8. 发明授权
    • Variable bandwidth switching system
    • 可变带宽交换系统
    • US4679191A
    • 1987-07-07
    • US611462
    • 1984-05-17
    • Gary A. NelsonPatrick N. GoddingRichard E. SchumakerKeith D. WalterEdward S. MarroneStillman E. GatesEverett O. Rigsbee, IIIMichael D. Teener
    • Gary A. NelsonPatrick N. GoddingRichard E. SchumakerKeith D. WalterEdward S. MarroneStillman E. GatesEverett O. Rigsbee, IIIMichael D. Teener
    • H04L5/24H04L12/42H04L25/49H04M9/02H04J3/22H04J3/16
    • H04L12/42H04L25/4904H04L5/24H04M9/025H04Q2213/13332
    • The present invention provides a communications system that improves upon the availability of communications paths between devices and simplifies the connectivity requirements to communicate data and control information to and from a remote station. System nodes are provided which are disposed along a time multiplex network signal stream. The nodes serve to interface remote stations to the network signal stream and may also switch information to different stations connected to the same node. The nodes are operative to allocate a variable bandwidth of the network signal stream for data communications between devices connected to different nodes. The nodes include switching devices that may be configured to accommodate stations that operate at different speeds. Allocation of bandwidth may be dynamically varied such that system resources are not unnecessarily diverted. Control of bandwidth allocation and internal switching within the node is accomplished via control information communicated to and from the node. Such control information may be contained within the network signal stream and decoded by the node or communicated to the node via a dedicated control communications line. Control information may be encoded into the signal stream communicated between the system node and the remote station. Thus, communication of data and control signals between the stations and the system node does not require complex wiring. Accordingly, individual stations may be more conveniently located.
    • 本发明提供了一种通信系统,其改进了设备之间的通信路径的可用性,并且简化了与远程站传送数据和控制信息的连接要求。 提供了沿着时间复用网络信号流布置的系统节点。 这些节点用于将远程站接口连接到网络信号流,并且还可以将信息切换到连接到同一节点的不同站点。 节点可操作地分配用于连接到不同节点的设备之间的数据通信的网络信号流的可变带宽。 节点包括可被配置为容纳以不同速度操作的站的交换设备。 可以动态地改变带宽的分配,使得系统资源不会被不必要地转移。 节点内的带宽分配和内部交换的控制是通过传递到节点的控制信息实现的。 这样的控制信息可以被包含在网络信号流内并被节点解码或经由专用控制通信线路传送到节点。 控制信息可以被编码到在系统节点和远程站之间传送的信号流中。 因此,站和系统节点之间的数据和控制信号的通信不需要复杂的布线。 因此,各个站可以更方便地定位。