Image data coding apparatus capable of promptly transmitting image data to external memory
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTetsuya Matsumura, Satoshi Kumaki, Atsuo Hanami, Hiroshi Segawa
Life of this patent
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Abstract
An image data coding apparatus includes: a memory interface which controls reading/writing of data from/to an external memory; an MPEG2 processing unit for performing a compression-coding process using a first compression ratio; and a coder/decoder which is provided between the MPEG2 processing unit and the memory interface, which performs a compression-coding process using a second compression ratio lower than the first compression ratio on data outputted from an image data coding unit to the external memory, and which performs a decoding process on data outputted from the external memory to the image data coding unit.
Claims9
An image data coding apparatus comprising:
- a memory interface which can be connected to an external memory and which controls reading/writing of data from/to said external memory;
- an image data coding unit to which successive plural pieces of image data are inputted, which performs a motion searching process on said image data to generate a prediction image, and which performs a compression-coding process on said image data by using said prediction image;
- and
- a coding/decoding unit which is provided between said image data coding unit and said memory interface, which performs compression-coding on data outputted from said image data coding unit to said external memory and which performs decoding process on data outputted from said external memory to said image data coding unit.
Dependencies are inferred from the claim text.