Image Reading Device Reference Portion Displacement Correction
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Solution Overview
Problem
Image reading devices face distortion issues due to device deformation, which existing technologies fail to adequately address when not using positional data of reference portions during image acquisition.
Innovation Solution
An image reading device is equipped with a reference portion in the reading area, a memory unit to store initial positional data, and an error handling unit to correct displacement when the displacement exceeds a predetermined value, ensuring accurate image acquisition by using reference lines for correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If image reading is performed without using positional data of reference portions, then device complexity is reduced, but image distortion occurs due to device deformation
Solution Approach 1:
The patent applies preliminary action by pre-storing positional data of reference portions in a memory unit before actual image reading operations. This preliminary storage of reference information enables subsequent correction of image distortion without adding complex real-time processing mechanisms, thus resolving the contradiction between system simplicity and image accuracy.
Solution Approach 2:
The patent implements feedback by comparing acquired positional data of reference portions with pre-stored initial values, calculating displacement amounts, and using this feedback information to correct image distortion. This feedback mechanism enables automatic compensation for device deformation without requiring complex mechanical stabilization systems.
2Manufacturing precision
If reference portions are used for correction, then image accuracy is improved, but device complexity increases due to additional components
Solution Approach 1:
The patent applies universality by designing the reading unit to serve multiple functions: it both reads the main image and reads the reference portions for distortion correction. This multi-functionality eliminates the need for separate reference reading mechanisms, thereby improving image accuracy without proportionally increasing device complexity.
Solution Approach 2:
The patent implements self-service by enabling the reading unit to automatically perform distortion correction using its own acquired positional data of reference portions and pre-stored initial values. The system corrects its own imaging errors without requiring external calibration equipment or complex additional components.
3Manufacturing precision
If displacement correction is performed, then image distortion is suppressed, but processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-storing initial positional values of reference portions in the memory unit before actual image reading. This preliminary preparation enables rapid comparison and calculation of displacement amounts during operation, reducing processing time while maintaining correction accuracy.
Solution Approach 2:
The patent implements partial action by performing correction only on the displacement amounts calculated from reference portion positional data, rather than processing the entire image data. This selective correction approach maintains image accuracy while minimizing processing time requirements.
Data Source
AI summary
An image reading device includes at least one reference portion that is provided in a reading area of a reading unit provided with a moving mechanism, a memory unit that stores, as an initial value, positional data of the reference portion that is read by the reading unit, an acquisition unit that reads the positional data of the reference portion and acquires a displacement amount of the read positional data from the initial value, and an error handling unit that performs error handling when the displacement amount exceeds a predetermined value.