Appeal No. 1999-0089 Page 2
Application No. 08/454,076
The invention at issue in this appeal relates to
predictive encoding of a television picture. By reducing
temporal redundance between successive television pictures,
predictive encoding avoids the need to transmit a picture in
its entirety. More specifically, corrections are applied to a
previously encoded picture to obtain a current picture.
In the invention, a television picture is treated as a
mosaic of areas. Two structure modes for encoding are used;
the particular mode used depends on the motion in a video
picture to be encoded. The first mode encodes the picture
with intra-frame prediction and field-based orthogonal
transformation. The second mode encodes the picture with
inter-frame prediction and frame-based orthogonal
transformation
Claim 38, which is representative for our purposes,
follows:
38. A picture signal encoding method comprising
the steps of:
receiving an interlaced signal having frames
each containing an odd field and an even field, said
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