Image analysis – Image compression or coding
Patent
1997-05-23
1999-02-23
Couso, Jose L.
Image analysis
Image compression or coding
G06K 936
Patent
active
058752706
ABSTRACT:
The image display device of the present invention includes a clear code detecting section for detecting a clear code that is input in an arbitrary position beforehand in a compressed image file when carrying out decompression, a status information extracting section for extracting status information of the clear code, an information storing section for storing the clear code and the status information of the clear code, a stored information searching section for searching a clear code nearest to a partial decompression start position from the status information upon receiving a request for partial decompression, and a partial decompression starting section which determines the partial decompression start position in the compressed image file, and subsequently starts decompression from the partial decompression start position. The described arrangement permits an intermediate access to the compressed image file of dictionary self-updating type, thereby realizing high speed decompression while reducing a required memory capacity to minimum.
REFERENCES:
patent: 3618032 (1971-11-01), Goldsberry et al.
patent: 4118695 (1978-10-01), Ogawa et al.
patent: 5408328 (1995-04-01), Boliek et al.
patent: 5566283 (1996-10-01), Modegi et al.
Couso Jose L.
Sharp Kabushiki Kaisha
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