Patent ID: 11949834
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 12:
13. A method of controlling an image reading device that includes a plurality of linear image sensors that are arranged so that adjacent image sensors include an overlapping region in which portions of reading regions of the adjacent image sensors overlap in a main scanning direction in which a document is read, the method comprising:
first buffering image data obtained by a first linear image sensor reading an image of a predetermined line of the document, the first linear image sensor reading the document precedingly among the plurality of linear image sensors;
second buffering image data obtained by a second linear image sensor reading an image of the predetermined line of the document, the second linear image sensor being subsequent to the first linear image sensor among the plurality of linear image sensors;
synthesizing first image data that corresponds to the overlapping region among the image data stored in the first buffering and second image data that corresponds to the overlapping region among the image data stored in the second buffering so as to generate image data of the overlapping region; and
generating image data of the predetermined line corresponding to the first linear image sensor and the second linear image sensor based on image data in which image data of the overlapping region are excluded from the image data stored in the first buffering, image data in which the image data of the overlapping region are excluded from the image data stored in the second buffering, and the image data generated in the synthesizing; and
controlling so as to execute, across in a sub-scanning direction of the document, processing in the first buffering, the second buffering, the synthesizing, and the generating.