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Patent Searching and Data


Title:
PICTURE STORAGE DEVICE
Document Type and Number:
Japanese Patent JPH0622151
Kind Code:
A
Abstract:

PURPOSE: To accurately reproduce a picture size even when an original picture size is not an integral number of multiple of a block size to be processed in the picture storage device processing the picture in the unit of blocks and executing compression/expansion.

CONSTITUTION: When the size of a picture inputted from an external device 100 is not an integral multiple of a block size to be processed, a block processing circuit executes round-up processing to attain block processing the picture into a picture whose size is an integral multiple of the block size including the original picture. Then a companding circuit 105 applies companding to the picture subjected to blocking in the unit of blocks. After the picture is restored to a picture of an integral multiple of the block size once by a raster processing circuit 108, a mask circuit 109 masks the size of the original picture to eliminate undesired picture elements. Thus, the picture size is accurately reproduced.


Inventors:
HONMA HIDEO
ISHIKAWA TAKASHI
Application Number:
JP1992000173441
Publication Date:
January 28, 1994
Filing Date:
June 30, 1992
Export Citation:
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Assignee:
CANON KK
International Classes:
G06F3/12; G06T9/00; H04N1/415; H04N7/30; (IPC1-7): H04N1/415; G06F3/12; G06F15/66; H04N7/133
Attorney, Agent or Firm:
大塚 康徳 (外1名)