Appeal 2007-1301
Application 09/924,322
STATEMENT OF CASE
Appellants appeal from a final rejection of claims 1 to 8 under
authority of 35 U.S.C. § 134. The Board of Patent Appeals and Interferences
(BPAI) has jurisdiction under 35 U.S.C. § 6(b).
Appellants’ invention relates to a process for a format conversion of a
digital image sequence. The format of a digital video signal may be
converted from one format to another, on a frame by frame basis, or even a
pixel group by pixel group basis, in order to facilitate further processing or
to improve display properties. The conversion takes processing time. The
invention relates to saving some time by noticing if no change has taken
place (i.e. no “residue”) between two successive independent (“inter type”)
frames or pixel groups, and if so, merely copying the previous frame or
group instead of converting the instant one. In the words of the Appellants:
[The invention] is a process for the format conversion of an
image sequence employing video data coded on the basis of a
structure of pixel groups, wherein, for a coded pixel group to be
converted, if the mode of coding used is of the inter type with no
residue, the conversion is performed by a copy of a converted pixel
group of a preceding image linked by the motion vector associated
with said coded pixel group.
(Specification 4).
Claim 1 is exemplary:
1. Process for the format conversion of an image sequence employing
video data coded on the basis of a structure of pixel groups comprising a
first step for decoding the coded data and a second step of converting of the
decoded data, wherein, for a coded pixel group to be converted, if the
decoding mode is of the "inter" type with no residue, the conversion is
2
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