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    • 1. 发明公开
    • FIFO BUFFER AND METHOD OF CONTROLLING FIFO BUFFER
    • FIFO-PUFFER UND VERFAHREN ZUR STEUERUNG EINES FIFO-PUFFERS
    • EP2503448A1
    • 2012-09-26
    • EP09851289.0
    • 2009-11-16
    • Fujitsu Limited
    • TANEDA, Masahiro
    • G06F5/12
    • G06F5/16
    • A first-in first-out buffer (1) includes: a packet storage buffer (10) capable of writing and reading data within one cycle by combining a plurality of memories, each memory performing any one of writing and reading of data within one cycle; a bank switch (17) that outputs a W_bank signal indicating a memory included in the packet storage buffer (10), the memory being capable of writing data; a packet writing control circuit (15) that performs writing control of data to be written to the memory indicated by the W_bank signal when the data to be written is inputted; and a packet writing beginning bank holding FIFO queue (19) that, in accordance with a queue writing signal "1" from the packet writing control circuit (15), holds the W_bank signal that is outputted from the bank switch (17) and indicates the memory in which head data of the data to be written is written.
    • 先进先出缓冲器(1)包括:能够通过组合多个存储器在一个周期内写入和读取数据的分组存储缓冲器(10),每个存储器执行在一个周期内的数据写入和读取中的任何一个 ; 输出指示包含在分组存储缓冲器(10)中的存储器的W_bank信号的存储体开关(17),所述存储器能够写入数据; 分组写入控制电路(15),当要写入的数据被输入时,执行写入由W_bank信号指示的存储器的数据的写入控制; 以及根据来自分组写入控制电路(15)的队列写入信号“1”保存从组开关(17)输出的W_bank信号并指示 写入要写入的数据的头数据的存储器。
    • 3. 发明公开
    • Synchronizer
    • Synchronisierer
    • EP1150450A2
    • 2001-10-31
    • EP01303793.2
    • 2001-04-26
    • Hewlett-Packard Company
    • Lo, Karen
    • H04L7/02G06F1/12
    • G06F5/16H04L7/02
    • A highly reliable synchronizer providing excellent synchronization without using complicated PLL or DLL circuitry, which is simple to test, which is easily adaptable to systems which use bit-sliced data, and which does not require large chip area includes a first stage, a data capture circuit (120), preferably comprised of pair of master-slave flip-flops (122a, 122b), that is electrically coupled to a second stage, a data selection circuit (134a, 134b) that preferably includes a FIFO comprised of N transparent latches that are electrically coupled to a multiplexer. The lack of complexity of the synchronizer design makes it smaller, faster, easier to test, and less prone to design error and manufacturing limits.
    • 高度可靠的同步器,无需使用复杂的PLL或DLL电路即可实现优异的同步,这是易于测试的,它易于适用于使用位分片数据的系统,不需要大芯片面积的系统包括第一阶段,数据采集 电路(120),优选地包括电耦合到第二级的一对主从触发器(122a,122b),数据选择电路(134a,134b),其优选地包括由N个透明锁存器 电耦合到多路复用器。 同步器设计的缺乏复杂性使其更小,更快,更易于测试,并且不太容易出现设计错误和制造限制。
    • 5. 发明公开
    • Video server system
    • Videoserversystem
    • EP0698999A2
    • 1996-02-28
    • EP95304017.7
    • 1995-06-09
    • Hewlett-Packard Company
    • Youden, John J.Kovalick, Albert W.Adams, Christopher R.Jensen, James E.Santos, KariSiccardo, Paolo L.Coggins, David JohnThapar, Manu
    • H04N7/173G06F5/06
    • G06F5/16H04N7/17336H04N21/2312H04N21/2318H04N21/23805H04N21/2381H04N21/2387H04N21/47202H04N21/6587
    • A video server (10) for providing Video-On-Demand is disclosed. A plurality of data sources (100) are coupled individually to a first and second bi-directional data/instruction switch (70 & 80). The first switch is additionally coupled to a data storage system (90) and the second switch is coupled to a network interface. A real time controller (60) is coupled to the data sources (100) and the switches (70 & 80) and can couple any part of the data storage system (90) to any selected data source (100) and any given network channel to any selected data source. A control system (50) coupled to the real time controller (60) and the second switch provides support services to the real time controller and acts as a gateway to third party services and products. The data storage system (90) is largely comprised of disk drive arrays (92). Video data is striped across the individual arrays (92), each video data program that a user requests being striped across one array. Each array provides video data to many users through the data sources (100). The video server (10) is tolerant of individual failures in the data storage system (90) and among the data sources (100), as operating portions of the data storage system (90) and spare data sources (100) can be rapidly switched to substitute for failed units. The server (10) can also be readily expanded and provides a user experience similar to that of a video cassette recorder.
    • 公开了一种用于提供视频点播的视频服务器(10)。 多个数据源(100)分别耦合到第一和第二双向数据/指令开关(70和80)。 第一开关另外耦合到数据存储系统(90),并且第二开关耦合到网络接口。 实时控制器(60)耦合到数据源(100)和开关(70和80),并且可将数据存储系统(90)的任何部分耦合到任何选择的数据源(100)和任何给定的网络信道 到任何选定的数据源。 耦合到实时控制器(60)和第二交换机的控制系统(50)向实时控制器提供支持服务,并充当到第三方服务和产品的网关。 数据存储系统(90)主要由磁盘驱动器阵列(92)组成。 视频数据在各个阵列(92)之间进行条带化,用户请求的每个视频数据程序都跨越一个阵列进行条带化。 每个阵列通过数据源(100)向许多用户提供视频数据。 视频服务器(10)能容忍数据存储系统(90)和数据源(100)中的单独故障,因为数据存储系统(90)和备用数据源(100)的操作部分可以快速切换 替代失败的单位。 服务器(10)也可以容易地扩展并提供与盒式磁带录像机相似的用户体验。