Encoding apparatus with two stages of data compression
First Claim
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1. A highly efficient encoding apparatus for encoding digital video data, said apparatus comprising:
- block segmentation means for receiving said digital video data in a raster scan format and for transforming the received data into a format having blocks of pixel data;
first encoding means for receiving said blocks of pixel data and for encoding and compressing the pixel data in each of said blocks into an approximately constant amount of encoded and compressed data in accordance with a control signal;
second encoding means for predictively encoding and further compressing said encoded and compressed data outputted from said first encoding means and including means for generating said control signal in accordance with the amount of predictively encoded and further compressed data; and
means for outputting said predictively encoded and further compressed data from said second encoding means.
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Abstract
In a highly efficient encoding apparatus, image data are encoded by multiple encoding techniques so as to obtain highly compressed image data. For example, a block segmentation circuit segments received digital image data into a plurality of relatively small blocks each having a plurality of pixels, and such small blocks are encoded by a block encoding circuit so as to compress the pixel data in each of the small blocks. The output data of the block encoding circuit are encoded by a predictive encoding circuit so as to obtain highly compressed image data.
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3 Claims
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1. A highly efficient encoding apparatus for encoding digital video data, said apparatus comprising:
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block segmentation means for receiving said digital video data in a raster scan format and for transforming the received data into a format having blocks of pixel data; first encoding means for receiving said blocks of pixel data and for encoding and compressing the pixel data in each of said blocks into an approximately constant amount of encoded and compressed data in accordance with a control signal; second encoding means for predictively encoding and further compressing said encoded and compressed data outputted from said first encoding means and including means for generating said control signal in accordance with the amount of predictively encoded and further compressed data; and means for outputting said predictively encoded and further compressed data from said second encoding means. - View Dependent Claims (2, 3)
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Specification