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    • 83. 发明公开
    • Fault tolerant data processing system
    • 容错数据处理系统
    • EP0398694A3
    • 1994-02-02
    • EP90305307.2
    • 1990-05-16
    • International Business Machines Corporation
    • Baker, Ernest DysartDinwiddie, John Monroe, Jr.Grice, Lonnie EdwardJoyce, James MauriceLoffredo, John MarioSanderson, Kenneth RussellSuarez, Gustavo Armando
    • G06F11/16G06F9/44G06F15/16
    • G06F11/1641G06F11/10G06F11/1008G06F11/1482G06F11/16G06F11/20
    • The functions of two virtual operating systems (e.g. S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors are coupled to corresponding S/88 processors directly and through the S/88 bus. Each S/370 processor is allocated form 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques. The S/370 is limit checked to prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices. The S/88 processors across the S/370 address space in direct response to a S/88 application program so that the S/88 may move I/O data into the S/370 I/O buffers and process the S/370 I/O operations. The S/88 and S/370 peer processor pairs to execute their respective Operating Systems in a single system environment without significant rewriting of either operating system. Neither operating system is aware of the other operating system nor the other processor pairs.
    • 两个虚拟操作系统(例如S / 370 VM,VSE或IX370和S / 88 OS)的功能合并为一个物理系统。 S / 88处理器的合作伙伴对运行S / 88操作系统,并处理系统的容错和单系统映像方面。 一个或多个S / 370合作伙伴对直接通过S / 88总线连接到相应的S / 88处理器。 每个S / 370处理器分配1到16兆字节的来自S / 88主存储器的连续存储器。 每个S / 370虚拟操作系统认为其内存分配从地址0开始,并通过正常的S / 370动态内存分配和分页技术管理其内存。 检查S / 370以防止S / 370访问S / 88存储空间。 S / 88操作系统是所有系统硬件和I / O设备的主人。 在S / 370地址空间中的S / 88处理器直接响应S / 88应用程序,以便S / 88可以将I / O数据移入S / 370 I / O缓冲区并处理S / 370 I / O操作。 S / 88和S / 370对等处理器配对,可在单一系统环境中执行各自的操作系统,而无需重写任何操作系统。 操作系统都不知道其他操作系统和其他处理器对。
    • 85. 发明授权
    • Modular multi-channel clock synchronizer
    • 模块化多通道时钟同步器
    • EP0176464B1
    • 1993-06-16
    • EP85630137.9
    • 1985-08-29
    • UNITED TECHNOLOGIES CORPORATION
    • Tulpule, Bhalchandra R.Oscarson, Edward M.Vosgien, David J.
    • G06F11/16G06F15/16
    • G06F11/187G06F11/16G06F11/1604G06F11/1679G06F11/1691
    • A modular synchronizer for use in synchronizing individual signal processors in a multiprocessor system is disclosed. Each synchronizer has a counter for counting its assiciated processor's clock pulses and, upon reaching a selected count, providing a counter frame output signal at an output thereof for use by each of the other synchronizers in the system. Each synchronizer has a voter responsive to counter output signals from each of the other synchronizers, and from itself as well, at input ports thereof. Each synchronizer's voter provides a frame sync (macro sync) pulse in each counter frame after receiving a selected number of counter frame output signals from any of the synchronizers in the system. Each synchronizer's voted frame sync pulse is provided at an output port of the synchronizer and may be utilized, depending on the application, for routing back into the synchronizer at a frame sync input port for resetting the synchronizer at a frame sync input port for resetting the synchronizer's counter, or for routing to one or more (slave) synchronizers for the same purpose. Each synchronizer's voter includes a rising edge voter that arms a falling edge voter only during a selected portion of the expected counter frame period (voting window). The synchronizer voter architecture can include clocked latches or not. The synchronizer may include fast and slow clock detectors. The synchronizer interfaces with its associated processor and includes disable circuitry for permitting the CPU to disable nonfunctional frame sync signals.