Appeal No. 1998-2579
Application 08/350,195
subject matter. An amendment after final rejection was filed
on March 6, 1997 but was denied entry by the examiner.
The disclosed invention pertains to a method and
apparatus for storing video data having a plurality of
resolution classes in a disk-array-based video server. More
particularly, the invention uses a rate staggering technique
to store the different resolution data into different disks in
the disk array so as to minimize the buffer space required by
the server.
Representative claim 1 is reproduced as follows:
1. A method of storing video data having a plurality of
resolution classes in a disk-array-based video server,
comprising the steps of:
dividing a video bit stream into a plurality of
substreams such that subsets of said substreams can be decoded
to create a plurality of output videos of different resolution
classes;
storing each of said substreams in a disk array
comprising a plurality of disk storage devices in a striped
format, wherein blocks for each resolution are stored in a
staggered pattern across said disk storage devices in said
array;
receiving, by the said video server, a request from a
client for a certain class of video;
identifying, according to a resolution class of video
requested, a subset of video substreams;
2
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