Dynamic Output Channel Control for Dual-Sided Scanning
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Solution Overview
Problem
Conventional image scanning apparatuses face challenges in increasing scanning speed without incurring additional costs, particularly when performing single-sided scanning, and often require two conveyance paths for concurrent both-sided scanning, which increases costs.
Innovation Solution
An image scanning apparatus with a control unit that adjusts the output channels and number of channels between single-sided and both-sided scanning modes, utilizing a first and second image scanning unit to convert analog signals into digital signals, allowing for parallel scanning of both sides of an original while maintaining cost efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If concurrent both-sided scanning is implemented using conventional methods, then scanning speed is improved, but device complexity and cost increase due to requiring two conveyance paths
Solution Approach 1:
A single conveyance path is designed to serve dual purposes: it conveys originals for both front-side and back-side scanning sequentially. The same mechanical structure is used for both scanning operations, eliminating the need for separate conveyance paths and reducing overall system complexity while maintaining both-sided scanning capability
Solution Approach 2:
The system dynamically switches between single-sided and both-sided scanning modes based on operational requirements. The control unit adjusts the scanning operation mode, enabling the conveyance path to adapt its function - operating in both-sided scanning mode when high speed is needed and single-sided mode when cost-effectiveness is prioritized
2Manufacturing precision
If resources such as AFE are allocated for high-resolution interval output, then manufacturing precision is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The system changes operational parameters dynamically based on scanning mode. When operating in both-sided scanning mode, the output channel configuration is adjusted to utilize available resources effectively. The control unit modifies channel allocation and AFE resource usage according to the specific scanning requirements, optimizing both precision and resource efficiency for each operational context
3Speed
If the number of output channels is increased for single-sided scanning, then scanning speed is improved, but device complexity increases
Solution Approach 1:
The output channel configuration is made dynamic rather than fixed. The control unit adjusts the number of active output channels based on the scanning mode - utilizing more channels when single-sided high-speed scanning is required and reducing channel usage during both-sided scanning. This dynamic adaptation allows the system to optimize performance for each mode without permanently increasing device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus achieves increased single-sided scanning speed while maintaining cost efficiency by optimizing channel usage and conveyance paths, enhancing scanning performance without the need for additional infrastructure.
Implementation Method 1
a first image scanning unit configured to perform image scanning of a first surface of the original by receiving reflected light from the first surface and outputting analog signals
Implementation Method 2
a second image scanning unit configured to perform image scanning of a second surface of the original by receiving reflected light from the second surface and outputting analog signals
Implementation Method 3
a conversion unit configured to convert, into digital signals, the analog signals output from at least one of the first image scanning unit and the second image scanning unit
Data Source
AI summary
An image scanning apparatus comprises: a first image scanning unit that performs image scanning of a first surface of an original; a second image scanning unit that performs image scanning of a second surface of the original; and a control unit that controls output channels for outputting analog signals from the first image scanning unit, wherein the control unit changes, between a case of single-sided scanning and a case of both-sided scanning, the output channels of the analog signals output from a part of scanning region in a plurality of scanning regions of the first image scanning unit, and changes, between a case of single-sided scanning and a case of both-sided scanning, the number of output channels for outputting the analog signals from the first image scanning unit.