IMAGE FORMING SYSTEM, CONTROLLER AND RASTERIZATION ACCELERATOR

WIPO Patent Application WO/2011/111446

A1

Disclosed is an image forming system (1) provided with: a controller (2) which comprises a list creation means (21) for creating a display list, a decompression means (23) for decompressing image data that has been compressed, a drawing means (22) for performing drawing from image data, and a print data creation means (25) for creating print data; and a rasterization accelerator (3) which comprises a second drawing means (31) for performing drawing in accordance with the display list, and compression means (32, 33, 34) for compressing image data drawn by the second drawing means, wherein the rasterization accelerator is provided with a determination means (35) for determining from display list information whether or not image data is compressed and for determining the compression method employed when compression is performed by the compression means, the determination means (35) being provided for the purpose of allowing optimal compression in accordance with the type and volume of image data and for the purpose of compressing image data to the greatest extent possible in order to reduce transmission time to a controller.

FUJISAWA SHINYA (JP)
KOYANAGI HITOSHI (JP)
TAKAGI KIYOSHI (JP)
KITADA TAKENORI (JP)

PCT/JP2011/052231

September 15, 2011

February 03, 2011

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KONICA MINOLTA HOLDINGS INC (JP)
FUJISAWA SHINYA (JP)
KOYANAGI HITOSHI (JP)
TAKAGI KIYOSHI (JP)
KITADA TAKENORI (JP)

B41J5/30; H04N1/413; B41J29/38; G03G21/00; G03G21/14; G06F3/12; H04N1/00

JPH10207664A	1998-08-07
JP2006313424A	2006-11-16
JP2009296590A	2009-12-17
JP2007110225A	2007-04-26
JP3862599B2	2006-12-27

See also references of EP 2547087A4

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