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1. 发明申请

WO1991010957A1 ARBITRATION AMONG MULTIPLE USERS OF A SHARED RESOURCE 审中-公开
标题翻译：共享资源的多个用户的仲裁
公开(公告)号：WO1991010957A1
公开(公告)日：1991-07-25
申请号：PCT/US1991000323
申请日：1991-01-16
申请人： CODEX CORPORATION
发明人： CODEX CORPORATION , HOLT, Craig, S. , KEREN-ZVI, Joseph , HASLEY, Lloyd, A.
IPC分类号： G06F13/00
CPC分类号： G06F13/374
摘要： Arbitration is performed among a plurality of users (12a-12n) for access to a shared resource in a system (10) of the kind in which the users (12a-12n) arbitrate by placing arbitration signals on a line (19) and subsequently comparing their arbitration signals with a signal appearing on the line (19), by providing the users (12a-12n) with independently operating clocks (18) and controlling the progression of the arbitration based on timing provided by the clock (18) of at least one of the users (12a-12n). The progression of the arbitration thus does not depend upon a single master clock, or upon synchronizing the individual user clocks (18). Users that request access are assigned a first priority in the arbitration based at least on an access priority preassigned to the request for access and on whether the user is a member of a current group of users that is formed at a time during the arbitration when another group of users is empty, the current group including users that have been denied access as of that time; at least a portion of each user's arbitration signal is arranged as a multibit word having a value that represents the first priority, and each user that arbitrates for access places its multibit word in parallel on the path and determines whether it has won the arbitration by subsequently comparing its multibit word value with the value of a multibit word that appears on the path.
摘要翻译：在用户（12a-12n）通过在线（19）上放置仲裁信号并随后进行仲裁的类型的系统（10）中的共享资源之间执行仲裁来执行仲裁通过向用户（12a-12n）提供独立操作的时钟（18）来比较他们的仲裁信号与出现在线路（19）上的信号，并根据由时钟（18）提供的定时控制仲裁的进展至少一个用户（12a-12n）。因此仲裁的进展不依赖于单个主时钟，或者在同步各个用户时钟（18）时。请求访问的用户至少基于预分配给访问请求的访问优先级以及用户是否是在仲裁期间形成的当前用户组的成员的另一个用户组为空，当前组包括当时已被拒绝访问的用户; 每个用户的仲裁信号的至少一部分被布置为具有表示第一优先级的值的多位字，并且仲裁访问的每个用户将其多位字并行在路径上并且确定其是否已经通过随后获得仲裁将其多位字值与出现在路径上的多位字的值进行比较。

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