Appeal No. 2003-1544
Application No. 09/126,171
Representative independent claim 1 is reproduced as follows:
1. A video decoder comprising:
a memory for storing a plurality of anchor frames suitable for
decoding a plurality of intermediate frames; and
a buffer independent of the memory for holding intermediate frame
data for display, characterised in that the video decoder is operable in first
and second modes of operation,
wherein in a first mode of operation a picture is encoded as a
single frame and the video decoder decodes the single frame twice
wherein (i) in a first decoding a set of lines of a first field of the single
frame are provided to the buffer for display and (ii) in a second decoding a
set of lines from a second field of the single frame are provided to the
buffer for display; and
wherein in a second mode of operation in which two consecutive
field pictures of a frame are decoded, (i) a first field picture of the two
consecutive field pictures is decoded and provided to the buffer for display
and then (ii) a second field picture of the two consecutive field pictures is
decoded and provided to the buffer for display.
The examiner relies on the following references:
Hoogenboom 5,717,461 Feb. 10, 1998
Schoner et al. (Schoner) 5,903,282 May 11, 1999
(filed Jul. 28, 1997)
Claims 1-19 stand rejected under 35 U.S.C. §103 as unpatentable over
Hoogenboom and Schoner.
Reference is made to the briefs and answer for the respective positions of
appellant and the examiner.
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