Control method for document scanning device
AssigneeCanon Kabushiki Kaisha
InventorYukio Murata
Life of this patent
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Abstract
A document scanning device reads an image on a document while scanning the image, and generates image data based on the image. The document scanning device selects and sets a scanning speed in accordance with a transfer mode used when the document scanning device transfers the image data to another apparatus. The document scanning device controls the amount of generated image data by using the set scanning speed to successively read the image, whereby optimal transfer processing in accordance with the transfer mode can be performed. By switching a transfer path in accordance with the type of the read data, i.e., binary data per pixel or multilevel data per pixel, efficient data transfer can be performed.
Claims23
A document scanning device comprising:
- scanning means for scanning an image on a document;
- generating means for generating image data based on the scanned image;
- a plurality of transfer paths for transferring the image data from said generating means, each transfer path having an interface circuit;
- determination means for determining whether the image data generated by said generation means are binary data per pixel or multilevel data per pixel;
- selection means for selecting a transfer path from the plurality of transfer paths based on the determination made by said determination means;
- and
- control means for controlling a scanning operation of said scanning means in accordance with the transfer path selected by said selection means.
An image processing apparatus comprising:
- input means for inputting image data;
- a plurality of transfer paths for transferring the image data input by said input means, each transfer path having an interface circuit;
- determination means for determining whether the image data input by said input means are binary data per pixel or multilevel data per pixel;
- and
- control means for controlling a transfer path from the plurality of transfer paths in accordance with a determination result by said determination means.
An image processing apparatus comprising:
- a scanner which scans an image on a document and generates image data based on the image;
- a plurality of transfer paths for transmitting the image data from said scanner, each transfer path having an interface circuit;
- a detector which detects whether the image data obtained from said scanner are binary data per pixel or multilevel data per pixel;
- and
- a controller which controls a transfer path from the plurality of transfer paths, in accordance with a detection result by said detector.
A control method for an image processing apparatus, comprising the steps of:
- inputting image data;
- transferring the image data input in said inputting step via a plurality of transfer paths, each transfer path having an interface circuit;
- determining whether the image data input in said inputting step are binary data per pixel or multilevel data per pixel;
- and
- controlling a transfer path from the plurality of transfer paths in accordance with a determination result obtained in said determining step.
A computer-readable program for controlling a scanner, said computer-readable program stored in a medium, said computer-readable program comprising the steps of:
- inputting image data;
- transferring the image data input in the inputting step, via a plurality of transfer paths, each transfer path having an interface circuit;
- determining whether the image data input in the inputting step are binary data per pixel or multilevel data per pixel;
- and
- controlling a transfer path from the plurality of transfer paths in accordance with a determination result obtained in the determining step.
Dependencies are inferred from the claim text.