Image data processing apparatus and image data processing method
AssigneeMinolta Co., Ltd.
InventorsEiichiro Kawasaki, Takeshi Morikawa, Eiichi Yoshida, Akio Nakajima, Tomoyuki Atsumi, Yoshikazu Ikenoue
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Abstract
In the image data processing of the digital copying machine (M), the image data is assigned to the expanders (30,31) in such a manner that the expansion time of each of the expanders (30,31) is close to one another. Thus, because the difference of the expansion time between the expanders (30,31) is very close to one another, both of the expanders (30,31) can be efficiently used so that the timing when printing can be started is quickened. In consequence, the speed of expansion processing or print processing is improved.
Claims17
An image data processing apparatus for processing a digital image data comprising:
- a plurality of expanders for receiving a compressed image data divided into a plurality of blocks and then expanding the compressed image data to output;
- and
- a controller for assigning each of the blocks of compressed image data to the expanders according to a time which each of the expanders requires to expand the compressed image data;
- wherein each of the expanders expands the blocks of image data assigned thereto.
An image data processing apparatus for processing a digital image data comprising:
- a compressor for receiving an image data and then dividing the image data into a plurality of blocks to compress the image data in the unit of block;
- a memory for storing the image data compressed by the compressor;
- a plurality of expanders for expanding the compressed image data;
- a controller for reading the compressed image data in the unit of block from the memory to assign the compressed image data to the expanders, the controller calculating a time which each of the expanders requires to expand the blocks of image data which have been already assigned thereto to assign each of the blocks to any one of the expanders according to the calculated time;
- and
- a synthesizer for synthesizing each of the blocks of image data expanded by the expanders to generate one image.
An image data processing method of processing a digital image data comprising the steps of:
- assigning a compressed image data, which is divided into a plurality of blocks and then compressed, to any one of a plurality of expanders;
- calculating an expansion time which each of the expanders requires to expand the blocks of image data assigned thereto in the assigning step;
- performing repeatedly the assigning step and the calculating step according to the expansion time calculated in the directly previous calculating step;
- and
- expanding the blocks of image data assigned to each of the expanders by driving the expanders at the same time.
Dependencies are inferred from the claim text.