Decoding apparatus and method
AssigneeSony Corporation
InventorHitoshi Nakamura
Life of this patent
Estimating the term…
Abstract
A decoding apparatus and method capable of improving the functionality and simplifying the constitution are realized. The decoding apparatus comprises compressing means for compressing image data decoded by the decoding means to be supplied to storing means and extending means for extending the image data compressed by the compressing means which has been stored in the storing means to be supplied to the decoding means. Also, the decoding method comprises a first step for storing the image data decoded by decoding processing in the storing means and a second step for reading and extending the compressed image data stored in the storing means and for decoding the encoded data based on the extended image data.
Claims22
Decoding apparatus comprising:
- a decoder for performing motion compensation processing of input encoded image data with the use of reference image data, to provide locally decoded data;
- a compressor for compressing said locally decoded data;
- a memory for storing said compressed decoded data;
- and
- a decompressor for reading and decompressing said compressed decoded data stored in said memory, and supplying said decompressed data to said decoder as said reference image data for use in said processing by said decoder.
A decoding apparatus for decoding encoded data by predetermined decoding processing, comprising:
- memory for storing image data obtained by decoding said encoded data;
- decoder for performing motion compensation processing of said encoded data based upon said image data stored in said memory and for outputting decoded image data;
- compressor for compressing said decoded image data output from said decoder and for supplying the compressed image data to said memory;
- and
- decompressor for decompressing said image data which is stored in said memory and which is compressed by said compressor and for supplying the decompressed image data to said decoder;
- whereby the decompressed image data is used as reference image data to perform said processing by said decoder.
The decoding apparatus according to clam 3, wherein said compressor compresses said image data output from said decoder by decimating the data of pixels in the horizontal direction in a predetermined block unit.
A decoding method for decoding encoded data by predetermined decoding processing, comprising the steps of:
- storing in a memory image data obtained by decoding said encoded data;
- performing at a decoder motion compensation processing of said encoded data based upon on said image data stored in said memory;
- compressing at a compressor said image data output from said decoder;
- storing the compressed image data in said memory;
- and
- decompressing at a decompressor said image data which is stored in said memory and which is compressed by said compressor and for supplying the decompressed image data to said decoder;
- whereby the decompressed image data is used as reference image data to perform said processing by said decoder.
Decoding method comprising the steps of:
- performing motion compensation processing of input encoded image data with the use of reference image data, to provide locally decoded data;
- compressing said locally decoded data;
- storing said compressed decoded data in memory;
- decompressing said compressed decoded data stored in said memory;
- and
- supplying said decompressed data as said reference image data for use in said motion compensation processing.
Dependencies are inferred from the claim text.