Handy scanner apparatus and control method thereof

Abstract

The present invention relates to a handy scanner apparatus and a control method thereof, which scan the surface of the object under scan, larger than a scanner, into units of two-dimensional tile images each of which has a predetermined size, and synthesize the photographed images in accordance with shift information into final page images. Particularly, a scan unit comprises: a transparent window portion which forms an area of tile images to be scanned,a housing portion which prevents the introduction of light from an external source,a camera module which maintains a fixed optical distance from the object under scan, and photographs tile images,a lighting module which provides light only during a preset time in accordance with a lighting signal,and a shift sensing module which outputs shift information.,According to the present invention, the surface of the object under scan is scanned by units of two-dimensional tile images in which positions of pixels are physically fixed, to thereby achieve improved accuracy of positions of pixels. According to the present invention, the number of arithmetic operations required for image synthesis is reduced, thus enabling high speed signal processing, and the bottom surface of the housing portion can approach closely to the scanning area, thus maximizing a scannable area.

Description

technical field [0001] The present invention relates to a hand-held scanner, in particular to a hand-held scanning device and a control method thereof which are configured to scan objects to be scanned which are larger than the reading area of ​​the scanner. Background technique [0002] A device that converts content recorded on the surface of an object to be scanned into a digital image (image), including newspapers, is generally called a scanner or a copier (hereinafter referred to as a "scanner"). The scanner inputs the content recorded on the surface of the original object to be scanned as an image, converts it into a digital signal for storage and transmission, and performs various applications through digital image processing. [0003] One of the ways of inputting an image of an original as a digital signal by a scanner is to use a contact image sensor, and generally such a contact image sensor uses a column of image sensors arranged in a column. [0004] Such scanne...

AI Technical Summary

Problems solved by technology

[0023] This type of prior art combines one-dimensional image data and synthesizes them, resulting in an increase in the number of calculations. Therefore, the processing speed of the control unit needs to be fast and a large-capacity memory is required, so there is a problem that the price is relatively high.

[0024] Moreover, the sensor configured to detect the moving direction in the movement sensing part 50 needs to maintain a precise error range, so there is a problem that the productivity is reduced and the occurrence rate of defects becomes high.

[0025] Photography (scanning) After scanning the target object, it takes a lot of time to correctly recognize the digital signal, so there is a problem that the scanning speed is reduced, and the position accuracy is lowered due to the combination error of the one-dimensional image data

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