Appeal No. 1997-1203
Application 08/432,786
The invention is directed to a motion picture encoding
system. The improvement relates to the way motion video
signals are encoded for sending data across signal
transmission systems such as a television-telephone system.
The encoding is desirable to reduce the amount of data
transmitted across, for example, a telephone line. There are
two common ways of encoding motion picture video signals for
transmission to remote places, namely, inter-frame encoding
and intra-frame encoding. An intra/inter-frame discriminator
is adapted to respond to an index indirectly indicating the
generated data quantity as the subject of comparison. The
subject of comparison is the sum of the absolute values of
pixel data in the frames to be encoded. First, for encoding a
target frame, inter-frame difference data is calculated in
preparation for the inter-frame encoding. The difference data
is detected on the basis of continuous inter-frame pixel data
calculated in an average value separation circuit and the
absolute value summation circuits, and is used as an index
indirectly representing the quantity of data generated in
inter-frame encoding. The sum of the absolute values is
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