Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1997-06-02
1999-06-22
Rinehart, Mark H.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
39520061, 345327, 370486, G06F 1338, G06F 1517
Patent
active
059150947
ABSTRACT:
A method and apparatus for delivering multimedia video data from a server (host processor) to a plurality of clients connected to a communications network. More specifically, with this invention, preprocessed video and multimedia data packets are striped across disks in units of fixed playback time, even if such units result in variable length stripes. To deliver multiple video or continuous media streams, the disks in the array are accessed simultaneously so that at any given instance, different disks are accessing the video or multimedia data for different streams. Access to the disks for reading the continuous media files is scheduled periodically, with the period equal to the back time of the stripes. Because each disk read command retrieves data for a fixed play back time, if the first read command for a continuous media stream request can be scheduled to complete on a disk within a playback time, all subsequent read commands are also guaranteed to not interfere with read commands of other streams. Data is delivered directly from the disk array to the communication network by a stream controller without being sent to the host system. Disk storage is utilized efficiently by allocating disk space in units of cylinders and storing the variable size stripes of video in packed format.
REFERENCES:
patent: 4577240 (1986-03-01), Hedberg et al.
patent: 5128810 (1992-07-01), Halford
patent: 5148432 (1992-09-01), Gordon et al.
patent: 5163131 (1992-11-01), Row et al.
patent: 5166939 (1992-11-01), Jaffe et al.
patent: 5206943 (1993-04-01), Callison et al.
patent: 5218689 (1993-06-01), Hotle
patent: 5249279 (1993-09-01), Schmenk et al.
patent: 5301310 (1994-04-01), Isman et al.
patent: 5313585 (1994-05-01), Jeffries et al.
patent: 5355453 (1994-10-01), Row et al.
patent: 5414455 (1995-05-01), Hooper et al.
patent: 5442390 (1995-08-01), Hooper et al.
patent: 5448568 (1995-09-01), Delpuch et al.
patent: 5469548 (1995-11-01), Callison et al.
patent: 5508732 (1996-04-01), Bottomley et al.
patent: 5510905 (1996-04-01), Birk
Tanebaum, Computer Networks, Prentice Hall, Engelwood Cliffs, NJ, 1981, Chapters 1, 5 and 8, pp. 1-31, 187-246, and 324-382, Dec. 1981.
Kouloheris Jack Lawrence
Kumar Manoj
Cameron Douglas W.
Drumheller Ronald L.
International Business Machines - Corporation
Rinehart Mark H.
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