Multi-cast digital video data server using synchronization groups
    11.
    发明授权
    Multi-cast digital video data server using synchronization groups 失效
    使用同步组的多播数字视频数据服务器

    公开(公告)号:US5583561A

    公开(公告)日:1996-12-10

    申请号:US255014

    申请日:1994-06-07

    IPC分类号: H04N5/93 H04L29/06 H04N7/173

    摘要: A system and method for distributing real-time, compressed, digital video data from a video library composed of multiple mass storage devices through a digital video data server to large numbers of viewers via distribution networks is provided. The server obtains selected frames of video data for viewer-requested programs from high-speed memory using a buffering strategy, replicates the data via a multi-cast technique for each viewer listed in an assigned synchronization group and forwards the data to each viewer's site where it is decompressed, decoded, and converted for display on a television monitor or computer display. Each viewer maintains interactive control over the transmission of the digital video data.

    摘要翻译: 提供了一种用于通过数字视频数据服务器从多个大容量存储设备构成的视频库将分布实时,压缩,数字视频数据通过分发网络分发给大量观众的系统和方法。 服务器使用缓冲策略从高速存储器中获取用于观众请求的节目的视频数据的选定帧,并通过多播技术为分配的同步组中列出的每个观众复制数据,并将数据转发到每个观众的站点, 它被解压缩,解码和转换以在电视监视器或计算机显示器上显示。 每个观看者保持对数字视频数据传输的交互式控制。

    Video on demand transaction server
    12.
    发明授权
    Video on demand transaction server 有权
    视频点播交易服务器

    公开(公告)号:US07784079B1

    公开(公告)日:2010-08-24

    申请号:US09304406

    申请日:1999-05-04

    IPC分类号: H04N7/173

    摘要: A method of and apparatus for efficiently providing video on demand services to a cable television subscriber. The provider system consists of two major subsystems. The first subsystem, called a video server, streams video to video on demand subscribers through the cable television network. The second subsystem, called the transaction server, performs virtually all remaining provider functions including, security, accounting, storage and spooling of video data, etc. The transaction server preferably uses a large scale mainframe computer. The video server subsystem may be a partitioned portion of same large scale mainframe computer.

    摘要翻译: 一种用于向有线电视订户有效地提供视频点播服务的方法和设备。 提供者系统由两个主要子系统组成。 称为视频服务器的第一个子系统通过有线电视网络将视频流视频点播用户。 称为交易服务器的第二个子系统几乎执行所有剩余的提供商功能,包括视频数据的安全,记帐,存储和假脱机等。事务服务器优选地使用大规模的主机计算机。 视频服务器子系统可以是同一大型主机计算机的分区部分。

    Communal lock processing system for multiprocessor computer system
    13.
    发明授权
    Communal lock processing system for multiprocessor computer system 有权
    多处理器计算机系统的公用锁处理系统

    公开(公告)号:US06922744B1

    公开(公告)日:2005-07-26

    申请号:US09925592

    申请日:2001-08-09

    IPC分类号: G06F12/08 G06F12/14

    CPC分类号: G06F12/0817

    摘要: In order to implement alternative pathways and procedures for handling a separate set of software locks, an arrangement of circuits is described. These circuits allow for generating and handling specific requests for communal software locks without additional software development through pathways and procedures separate from ordinary lock handling operations. A side door communications pathway is set up to handle the communal locks separately from the ordinary data transfer pathways through which ordinary software locks get handled. Supporting and controller circuits handle the locking and unlocking process as well as communicating results of lock requests back to requesters.

    摘要翻译: 为了实现用于处理单独的软件锁集合的替代路径和过程,描述了电路的布置。 这些电路允许生成和处理公共软件锁的特定请求,而无需通过与普通锁操作操作分离的路径和过程进行额外的软件开发。 侧门通信路径被设置为与普通软件锁处理的普通数据传输路径分开处理公用锁。 支持和控制器电路处理锁定和解锁过程,并将锁定请求的结果传达给请求者。

    Disk recovery/reconstruction
    14.
    发明授权
    Disk recovery/reconstruction 失效
    磁盘恢复/重建

    公开(公告)号:US06662307B1

    公开(公告)日:2003-12-09

    申请号:US08076587

    申请日:1993-06-14

    IPC分类号: G06F1134

    摘要: An apparatus and method of efficiently recovering from physical disk drive (or logical file) failures in transaction based digital data processing systems. As transactions are sequentially processed, compacted audit trail records are prepared to indicate modifications resulting from each transaction. The audit trail records are stored in storage areas on a disk drive in accordance with the physical data base disk drive(s) or logical file(s) to which the corresponding transaction refers. A physical disk drive or logical file is dumped to magnetic tape whenever the associated audit trail storage area is full, thus clearing the audit trail storage area for further use. When a physical disk drive or logical file fails, the most recent dump is read. Modifications to each file of the dump are made as compacted audit trail data is processed. The modified files are destaged to a spare disk drive.

    摘要翻译: 一种在基于事务的数字数据处理系统中有效地从物理磁盘驱动器(或逻辑文件)故障恢复的装置和方法。 随着交易被顺序处理,压缩的审计跟踪记录被准备好指示每次交易产生的修改。 审计跟踪记录根据物理数据库磁盘驱动器或相应事务所参考的逻辑文件存储在磁盘驱动器上的存储区域中。 物理磁盘驱动器或逻辑文件在相关联的审计跟踪存储区域已满时转储到磁带,从而清除审计跟踪存储区域以供进一步使用。 物理磁盘驱动器或逻辑文件失败时,将读取最近的转储。 对转储的每个文件进行修改,作为压缩的审计跟踪数据进行处理。 已修改的文件已转储到备用磁盘驱动器。

    Data base backup and recovery system and method
    15.
    发明授权
    Data base backup and recovery system and method 失效
    数据库备份与恢复系统及方法

    公开(公告)号:US5404508A

    公开(公告)日:1995-04-04

    申请号:US986155

    申请日:1992-12-03

    IPC分类号: G06F11/20 G06F15/40

    摘要: A system and method for maintaining a backup data base. An initial backup copy of a data base is made and stored separate from an active primary data base. Each time the primary data base is updated, audit information pertaining to the data base update is stored in non-volatile storage. A recovery processor continuously reads the audit information from the non-volatile storage and updates the backup data base accordingly, thereby maintaining a backup data base which is nearly up-to-date with the primary data base.

    摘要翻译: 用于维护备份数据库的系统和方法。 制作数据库的初始备份副本,并将其与活动的主数据库分开存储。 每次更新主数据库时,与数据库更新相关的审核信息都存储在非易失性存储器中。 恢复处理器从非易失性存储器连续读取审核信息,并相应地更新备份数据库,从而保持与主数据库几乎是最新的备份数据库。

    Apparatus for simultaneously measuring a plurality of digital events
employing a random number table
    16.
    发明授权
    Apparatus for simultaneously measuring a plurality of digital events employing a random number table 失效
    一种用于同时测量采用随机数字表的多个数字事件的装置

    公开(公告)号:US4176402A

    公开(公告)日:1979-11-27

    申请号:US908886

    申请日:1978-05-24

    申请人: Ralph E. Sipple

    发明人: Ralph E. Sipple

    摘要: Apparatus for measuring the rate of occurrence and duration of digital events through the technique of multiple sampling at times random to the occurrence of the digital events. The digital events to be sampled are represented as the presence or absence of binary ones or zeroes that can be sensed in a subject conductor at a given point in time. Since the probability of sensing a binary state of true or false at any particular but randomly determined time is a function of the duty cycle, sensing the binary state of or sampling a given digital event a given number of times produces a correspondingly statistically significant measure of the duty cycle of the digital event. The greater the number of samples, the greater the confidence in the measure of the duty cycle. The number of samples necessary to evoke a given confidence level is determined through the use of basic statistics. The point in time at which sampling occurs must be random to permit statistical validity. Though true randomness may be philosophically unattainable, randomness for sampling purposes is achieved through reading a random number table stored within a programmable read only memory (PROM) in response to a time standard running synchronously to the occurrence of the digital events to be sampled. Each entry from the random number table determines whether sampling will occur when it is read from the PROM. The binary state of each subject conductor is recorded at the sampling time as an increment to a counter or increment to the contents of an addressable location in a random access memory (RAM).

    摘要翻译: 用于通过多次采样的技术测量数字事件发生率和持续时间的装置,其随机地发生数字事件。 要采样的数字事件被表示为存在或不存在可以在给定时间点在主体导体中感测的二进制或零。 由于在任何特定但随机确定的时间内感测到二进制状态为真或假的概率是占空比的函数,所以在给定数量的次数下感测给定数字事件的二进制状态或采样给出了相应的统计学上显着的度量 数字事件的占空比。 样品数量越多,占空比测量的信心就越大。 通过使用基本统计确定唤起给定置信水平所需的样本数量。 采样发生的时间点必须是随机的,以允许统计有效性。 虽然真实的随机性可能在哲学上是无法实现的,但是通过读取存储在可编程只读存储器(PROM)中的随机数表来响应于与要采样的数字事件的发生同步地运行的时间标准来实现抽样目的的随机性。 来自随机数表的每个条目确定当从PROM读取时是否发生采样。 每个被摄体导体的二进制状态在采样时刻被记录为对计数器的增量或递增到随机存取存储器(RAM)中的可寻址位置的内容。

    Invalid instruction code detector
    17.
    发明授权
    Invalid instruction code detector 失效
    指令码检测器无效

    公开(公告)号:US4167778A

    公开(公告)日:1979-09-11

    申请号:US873470

    申请日:1978-01-30

    申请人: Ralph E. Sipple

    发明人: Ralph E. Sipple

    IPC分类号: G06F9/22 G06F9/30 G06F11/00

    CPC分类号: G06F9/30145 G06F9/226

    摘要: A read-only memory, adapted to be addressed by the operation code portion of a computer instruction word, stores at addressable locations therein a flag indicating whether a particular combination of operation code bits is a valid combination.

    摘要翻译: 适于由计算机指令字的操作代码部分寻址的只读存储器在其可寻址位置处存储指示操作码位的特定组合是否是有效组合的标志。