Data development device and data development method
AssigneeNEC Electronics Corporation
InventorAkihisa Ono
Life of this patent
Estimating the term…
Abstract
A data development device includes an LZ77 development part expanding data by referring to a dictionary including previous development result when data same to previous data is output, a PNG inverse filter performing arithmetic operation on development result of the LZ77 development part and image data previously output and outputting the image data, and a shared memory including an internal dictionary area and a line data area, the internal dictionary area storing previous development result referred by the LZ77 development part and the line data area storing the image data which is previously output and used by the PNG inverse filter. The shared memory has capacity for the internal dictionary area and capacity for the line data area set based on analysis result analyzing input data.
Claims18
A data development device comprising:
- a development part expanding data by referring to a dictionary including previous development result when data same to previous data is output;
- an operation part performing arithmetic operation on development result of the development part and image data previously output and outputting image data;
- and
- a shared memory including an internal dictionary area and a line data area, the internal dictionary area storing previous development result referred by the development part and the line data area storing the image data, the image data being previously output and used by the operation part,
- wherein the shared memory has capacity for the internal dictionary area and capacity for the line data area set based on analysis result analyzing input data.
A data development method comprising:
- analyzing input data and setting an internal dictionary area and a line data area in a shared memory;
- developing input data by referring to an internal dictionary including previous development result stored in the internal dictionary area of the shared memory when data same to previous data is output;
- and
- performing arithmetic operation on development result and image data previously output and stored in the line data area of the shared memory and outputting image data.
Dependencies are inferred from the claim text.