Document Reading Device with Dual Inclination Correction
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Solution Overview
Problem
Existing reading devices struggle to effectively correct the inclination of documents of multiple different sizes, leading to potential document damage and inadequate correction.
Innovation Solution
A reading device that includes both mechanical and electronic inclination correction devices, with a switching mechanism that automatically selects between the two based on the size diversity of the documents being read.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mechanical inclination correction is used for documents of multiple sizes, then inclination correction is achieved, but document damage occurs and correction effectiveness decreases
Solution Approach 1:
The patent replaces the mechanical inclination correction system with an electronic/image processing-based correction system. The imaging device captures the document image, and the control device performs electronic inclination correction on the captured image, eliminating the need for mechanical contact between the document and correction components. This substitution resolves the contradiction by achieving inclination correction without physical contact that causes document damage.
Solution Approach 2:
The patent creates a digital copy of the document through the imaging device, and performs inclination correction on this copy rather than on the physical document itself. The electronic correction is applied to the captured image data, allowing multiple corrections and adjustments without affecting the original document, thus preventing document damage while maintaining correction effectiveness.
2Manufacturing precision
If mechanical inclination correction with delayed deceleration timing is used, then correction effectiveness improves for small documents, but the system cannot adapt to documents of multiple sizes
Solution Approach 1:
The patent implements a dynamic correction system that automatically adjusts correction parameters based on the detected document size. The control device detects the size of each document and dynamically modifies the electronic correction algorithm accordingly, enabling effective inclination correction for documents of any size without requiring manual adjustment or mechanical reconfiguration.
Solution Approach 2:
The patent changes the correction parameters (such as correction angle, abutment amount, and timing) based on the detected document size. The control device stores multiple sets of correction parameters corresponding to different document sizes and automatically selects the appropriate parameters, enabling the system to adapt to documents of multiple sizes while maintaining optimal correction effectiveness.
3Device complexity
If a single correction method is used for all documents, then the system structure is simple, but correction effectiveness decreases for documents of multiple sizes
Solution Approach 1:
The patent implements a universal electronic correction system that can handle documents of any size through software-based parameter adjustment. Instead of having separate mechanical correction mechanisms for different document sizes, the system uses a single imaging device and control device that perform electronic correction with dynamically adjusted parameters, achieving multi-functionality without increasing hardware complexity.
Data Source
AI summary
A reading device includes: a light source to emit light to a subject; an imaging device to receive light reflected from the subject and generate an image; a first inclination correction device to mechanically correct an inclination of the subject; a second inclination correction device to electronically correct an inclination of the image obtained at the imaging device; and circuitry to: switch to use between the first inclination correction device and the second inclination correction device. In a case where the subject includes subjects of a single size but does not include subjects of multiple sizes, the circuitry switches to use the first inclination correction device, and in a case where the subject includes subjects of multiple sizes, the circuitry switches to use the second inclination correction device.