公开(公告)号：DE69504551T2

公开(公告)日：1999-05-27

申请号：DE69504551

申请日：1995-03-13

Applicant: IBM

Inventor： DAN ASIT ,  SHAHABUDDIN NAYYAR PERWEZ ,  SITARAM DINKAR

IPC: G06F12/00 ,  G06F13/00 ,  G11B20/10 ,  H04N5/765 ,  H04N5/93 ,  H04N7/173 ,  H04N21/472 ,  H04N7/00

Abstract: An integrated scheduling approach that provides VCR control functions to clients without always requiring a separate video stream for all clients. When a client invokes a resume, following a pause, the system uses a hierarchy of methods to handle the request. If an ongoing video stream is available such that the point at which the client is paused will be reached by that stream within a tolerable delay, the client is assigned to the ongoing stream. If no such stream is available, and the client request can not be served from a buffer, the system assigns the client to a reserve stream taken from a pool of reserved server capacity. If no reserved server capacity is available, the client is given priority for assignment to the next stream to become available.

公开(公告)号：CA2142381A1

公开(公告)日：1995-09-16

申请号：CA2142381

申请日：1995-02-13

Applicant: IBM

Inventor： DAN ASIT ,  SHAHABUDDIN NAYYAR P ,  SITARAM DINKAR

IPC: G06F12/00 ,  G06F13/00 ,  G11B20/10 ,  H04N5/765 ,  H04N5/93 ,  H04N7/173 ,  H04N21/472

Abstract: An integrated scheduling approach that provides VCR control functions to clients without always requiring a separate video stream for all clients. When a client invokes a resume, following a pause, the system uses a hierarchy of methods to handle the request. If an ongoing video stream is available such that the point at which the client is paused will be reached by that stream within a tolerable delay, the client is assigned to the ongoing stream. If no such stream is available, and the client request can not be served from a buffer, the system assigns the client to a reserve stream taken from a pool of reserved server capacity. If no reserved server capacity is available, the client is given priority for assignment to the next stream to become available.

公开(公告)号：CA2142380A1

公开(公告)日：1995-09-02

申请号：CA2142380

申请日：1995-02-13

Applicant: IBM

Inventor： DAN ASIT ,  SITARAM DINKAR

IPC: G06F12/08 ,  G06F3/06 ,  H04N7/173 ,  G11B20/10

Abstract: A method for reducing the disk bandwidth capacity required by a multimedia server by selectively retaining blocks that have already been read in by one stream for re-use by another. Due to stream-dependent block buffering, the storage requirement is less than that for whole-movie buffering and because the policy is dynamic, it also adapts rapidly to changing access patterns.