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公开(公告)号：CA2222390A1
公开(公告)日：1998-06-02
申请号：CA2222390
申请日：1997-11-27
Applicant: IBM
Inventor： ADIGA ASHOK K , KALINOSKI KENNETH A , DAY MICHAEL N , SHAW WADE D , LEGBAND DALE A , WOOD DONALD E , WOLFE DANIEL C
Abstract: In order to increase the number of datastreams provided by a multimedia syst em, a cluster of clusters of multimedia A/V server subsystems is provided. Each cluster in turn is comprised of a plurality of A/V servers, a shared loop architecture pluralit y of data storage devices interconnected to the A/V servers whereby any storage device is subs tantially equally accessible by any of the servers in the cluster; and a highly availa ble control server subsystem interconnected to the A/V servers and the data storage devices for controlling the A/V servers and the data storage devices. Each of the clusters is interc onnected to a high speed switch for delivery of datastreams from the cluster to the end us er. One of the control server subsystems also serves as a master control server assigning a request for a datastream to one of the clusters.
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公开(公告)号：CA1204513A
公开(公告)日：1986-05-13
申请号：CA386996
申请日：1981-09-30
Applicant: IBM
Inventor： DEACON JOHN J , WOOD DONALD E
Abstract: TABLE STRUCTURING AND DECODING A decode table made up of words arranged and encoded on a byte value/frequency of use basis for decoding phrases stored in a table. The words making up the phrases in the phrase table are also encoded with a byte value based on the frequency of use of the words. That is, the most popular words are coded with low byte values represented with a minimum number of bits. The least used words are coded with higher byte values represented with a greater number of bits. As such, storage requirements are significantly decreased. As an example, a three word phrase including two relatively popular words may require only 11 bits made up of 3, 3, and 5 bit words. In the decoding table associated with each word is number of word bits information. This number of bits information is used during decoding for distinguishing the words making up the phrases. The process of decoding a phrase includes comparing the phrase with the words in the decode table. Since the words in the decode table are arranged or ordered by byte value, there is a likelihood of an early compare upon indexing through the decode table. Upon a compare, the number of bits information associated with the word resulting in a compare is used to determine any phrase remainder. If there is a remainder, the remainder is compared with the decode table to obtain a match. The compare/remainder determination sequencing continues until all words in the phrase have been decoded.
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公开(公告)号：CA2222390C
公开(公告)日：2002-02-05
申请号：CA2222390
申请日：1997-11-27
Applicant: IBM
Inventor： ADIGA ASHOK K , WOOD DONALD E , LEGBAND DALE A , SHAW WADE D , DAY MICHAEL N , WOLFE DANIEL C , KALINOSKI KENNETH A
Abstract: In order to increase the number of datastreams provided by a multimedia syst em, a cluster of clusters of multimedia A/V server subsystems is provided. Each cluster in turn is comprised of a plurality of A/V servers, a shared loop architecture pluralit y of data storage devices interconnected to the A/V servers whereby any storage device is subs tantially equally accessible by any of the servers in the cluster; and a highly availa ble control server subsystem interconnected to the A/V servers and the data storage devices for controlling the A/V servers and the data storage devices. Each of the clusters is interc onnected to a high speed switch for delivery of datastreams from the cluster to the end us er. One of the control server subsystems also serves as a master control server assigning a request for a datastream to one of the clusters.
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公开(公告)号：CA2222398A1
公开(公告)日：1998-06-02
申请号：CA2222398
申请日：1997-11-27
Applicant: IBM
Inventor： LEGBAND DALE A , SHAW WADE D , WOLFE DANIEL C , WOOD DONALD E , DAY MICHAEL N , KALINOSKI KENNETH A , ADIGA ASHOK K
IPC: H04L49/111 , H04N7/173 , H04Q11/04 , H04L29/02
Abstract: A shared loop multimedia datastreaming server system in provided. A plurality of A/V servers have equal access to a pool of disk arrays interconnected in a shared lo op architecture such as SSA or FC-AL. Each server delivers a corresponding datastre am from the loop through an isochronous broadband connection to appropriate A/V dev ices. The A/V servers are interconnected by a control loop such as an Ethernet link. A n archive server also accessed the shared storage loop and an archive storage system. The archive server loads titles from archive to the loop as desired and serves as a backup A /V server. A high availability control server cluster interconnects to the A/V server and t he archive server to control resource management, including distribution of titles on the l oop and loading titles from the archive server and balancing the loads on the A/V server s.
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