Image Processing System Automatic Retransmission Horizontal Sync Error
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Solution Overview
Problem
Existing document readers require user intervention to retry reading operations when unusual image signals occur, leading to inefficient processing and unnecessary document conveyance in auto document feeders.
Innovation Solution
An image processing system that automatically requests and retransmits image data when an unusual horizontal synchronization signal is detected, allowing for continuous document reading and error correction without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the document reader monitors image signals and determines errors, then reading accuracy is improved, but user operation complexity increases because user intervention is required to retry reading operations
Solution Approach 1:
The system automatically detects reading errors through horizontal synchronization signal monitoring and autonomously initiates retry operations without requiring user intervention. The control unit serves itself by implementing error detection and automatic retry functionality, eliminating the need for manual error handling while maintaining high reading accuracy.
2Reliability
If the auto document feeder conveys documents for retry reading, then reading completeness is improved, but processing efficiency deteriorates because successfully read documents are conveyed again unnecessarily
Solution Approach 1:
The system segments the document processing flow by tracking which specific documents or pages have been successfully read and which require retry. The control unit maintains reading status information for each document, enabling selective conveyance only for documents that actually require retry, thereby avoiding unnecessary reprocessing of successfully read documents while ensuring reading completeness.
3Extent of automation
If the system automatically requests retransmission of image data upon error detection, then automation level is improved, but system complexity increases due to additional control mechanisms
Solution Approach 1:
The system implements feedback control by monitoring horizontal synchronization signals during image data transmission and storage. When an anomaly is detected in the synchronization signal, the control unit automatically triggers a retry request to the reading unit. This feedback mechanism enables high automation through simple error detection and automatic retry logic, managing system complexity through straightforward cause-and-effect control rather than complex decision-making algorithms.
Data Source
AI summary
The image processing system includes a reading unit configured to read an image of a document for each line to generate image data, a generation unit configured to generate a horizontal synchronization signal, the horizontal synchronization signal indicating a pixel at an initial position in each line of the image data that is generated through the reading of the image, a transmitting unit configured to transmit the image data through the reading of the document, and the horizontal synchronization signal, a receiving unit configured to receive the image data and the horizontal synchronization signal transmitted from the transmitting unit, and a requesting unit configured to request retransmission of the image data under transmission from the transmitting unit when the receiving unit receives an horizontal synchronization signal which is different from normal, wherein the transmitting unit transmits the image data in response to the request by the requesting unit.