Page printer, resolution converting method, and variable-length reversible compression process
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United States of America Patent
Stats
-
Nov 10, 1998
Issued Date -
N/A
app pub date -
Sep 5, 1997
filing date -
Mar 8, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A page printer printing document data includes a first rasterizing part for rasterizing the document data with a first resolution and a data compression part for compressing each of blocks which form first rasterized data from the first rasterizing part to produce a compression code, and for storing the compression code in a compression memory. The page printer further includes a data decompression part for decompressing the compression code stored in the compression memory, and for transmitting decompressed data to a printer engine having the first resolution. A second rasterizing part rasterizes the document data again with a second resolution less than the first resolution when the compression code exceeds a given size. A resolution converting part in the page printer converts second rasterized data from the second rasterizing part to conversion data with the first resolution, and transmits the conversion data to the printer engine having the first resolution.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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