Secondary storage facility for data processing systems
    11.
    发明授权
    Secondary storage facility for data processing systems 失效
    数据处理系统的二次存储设备

    公开(公告)号:US3999163A

    公开(公告)日:1976-12-21

    申请号:US432140

    申请日:1974-01-10

    Abstract: A secondary storage facility including magnetic tape, disk or drum units or other sequential access storage units. Each storage unit or drive connects to a controller by means of a device bus with asynchronous and synchronous paths. Status and controller information is coupled between the controller and a selected drive unit asynchronously over the asynchronous bus. Actual data transfers occur between the controller and a drive over the synchronous bus and between other units in the system and the controller using direct memory access or equivalent data transfers.

    Abstract translation: 二级存储设备,包括磁带,磁盘或磁盘单元或其他顺序访问存储单元。 每个存储单元或驱动器通过具有异步和同步路径的设备总线连接到控制器。 状态和控制器信息通过异步总线异步地耦合在控制器和选定的驱动单元之间。 实际数据传输发生在控制器和驱动器之间的同步总线以及系统中的其他单元之间以及使用直接存储器访问或等效数据传输的控制器之间。

    Extruder screw
    12.
    发明授权
    Extruder screw 失效
    挤出机螺丝

    公开(公告)号:US6017145A

    公开(公告)日:2000-01-25

    申请号:US366526

    申请日:1994-12-30

    Abstract: An extruder screw for use in a barrel of an extruder for forwarding thermoplastic polymer from a first end to a second end of the extruder. The extruder comprises a transition section and at least one flight extending substantially along the length of the screw. A dam is positioned at the point where the rapid melting of the solids starts to slow down and the rate of solid bed width decrease approaches zero. The dam provides the screw with a high output of extrudate and close control of the residence time of polymer particles as they are transported through the screw, resulting in an extrudate which is uniformly melted and which is substantially free of degradation products and/or entrapped air.

    Abstract translation: 一种挤出机螺杆,用于挤出机筒中,用于将热塑性聚合物从挤出机的第一端转移到第二端。 挤出机包括过渡段和基本上沿螺杆长度延伸的至少一个螺旋。 大坝位于固体快速熔化开始减速的地步,固体床宽度的降低速率接近零点。 大坝为螺杆提供高产量的挤出物,并且密封控制聚合物颗粒在通过螺杆输送时的停留时间,导致挤出物均匀熔化,基本上不含降解产物和/或夹带空气 。

    Bus-control mechanism
    15.
    发明授权
    Bus-control mechanism 失效
    总线控制机制

    公开(公告)号:US4661905A

    公开(公告)日:1987-04-28

    申请号:US534781

    申请日:1983-09-22

    CPC classification number: G06F13/374

    Abstract: Control of a communications path interconnecting separate devices in a digital computer system is provided by only two signals generated and received locally within each device on the path and asserted on a systems-wide basis on two separate lines of the path. The generation and utilization of the control signals is independent of the physical location of the devices on the path, and position-dependent delays in transmission of the signals from one device to another are avoided.

    Abstract translation: 在数字计算机系统中互连单独设备的通信路径的控制仅由在路径上的每个设备内本地生成和接收的两个信号提供,并且在系统的基础上在路径的两条不同的线路上被断言。 控制信号的产生和利用与路径上的设备的物理位置无关,并且避免了将信号从一个设备传输到另一个设备的位置相关延迟。

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