Reexamination Control No. 90/005,742
Patent 5,253,341
1 image," reads on Walter's stored and transmitted video programs. The rejection is therefore
2 affirmed as to that claim.
3 Claim 101 also repeats the preamble and paragraphs (a) to (d) of claim 93 and recites as
4 step (e):
5 (e) wherein said compressed or non-compressed response is
6 compressed prior to receipt at said remote query and data retrieval means,
7 and wherein said compressed response is decompressed at said remote
8 query and data retrieval means using an asymmetric decompression
9 technique corresponding to an inverse operation of the technique used to
10 compress said compressed or non-compressed response.
11
12 The first "wherein" clause is satisfied because each video program is transmitted in compressed
13 form and thus is compressed prior to receipt of the response by the data receiving station, which
14 corresponds to the recited “remote query and data retrieval means.”
15 As for the second "wherein" clause, the examiner and appellant do not agree on the
16 meaning of "asymmetric decompression." The examiner construes the following language in the
17 abstract of the '341 patent as an admission that compression and inverse decompression
18 techniques are inherently asymmetric:
19 The EUS may transmit a query to the Server manually and/or
20 automatically for the purpose of initiating a process in the Server (e.g. data
21 compression, indexing into a very large database, etc.), which requires the
22 high speed processing, large capacity and multi-distributed data storage,
23 etc.) which are typically preferred at a Server. The EUS provides
24 appropriate inverse processing (e.g. data decompression) which, by its
25 nature, requires relatively little processing power to accomplish. Thus, the
26 method of this invention exploits the inherent asymmetry in the overall
27 process of an EUS querying a remote Server (and/or Server Network) for
28 a
29 data service (e.g. retrieval of AV data in faster than real time) where most
30 of the processing power and global scheduling is performed by the Server.
31
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