Appeal No. 2001-0925
Application No. 08/897,401
Claim 17 is illustrative of the claimed invention, and it
reads as follows:
17. A method of transforming image data between
formats, comprising:
receiving a request for image data in a requested
format, the requested format including a plurality of
parameters having a first set of parameter values;
identifying a present format for the image data, the
present format including a second set of parameter values
for the plurality of parameters;
comparing the second set of parameter values to the
first set of parameter values;
responsive to identifying at least one parameter value
within the second set which does not match a parameter value
within the first set for a corresponding parameter,
initializing a filter stack capable of containing an
arbitrary number of selectively installed filters;
for each parameter value within the second set which
does not match a corresponding parameter value within the
first set, installing a filter in the filter stack for
altering the image data; and
applying each filter in the filter stack to the image
data, wherein the image data may be efficiently transformed
from the present format to the requested format.
The references relied on by the examiner are:
Baroody, Jr. (Baroody) 4,703,515 Oct. 27, 1987
Keith et al. (Keith) 4,785,349 Nov. 15, 1988
Le Gall et al. (Le Gall) 4,897,799 Jan. 30, 1990
Parulski et al. (Parulski) 5,040,068 Aug. 13, 1991
Calarco et al. (Calarco) 5,237,432 Aug. 17, 1993
Foley et al. (Foley), Computer Graphics: Principles and Practice,
pp. 585-87 (2ND Ed., 1990).
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