Image Processing Unit Resolution-Based Detection Sequence
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Solution Overview
Problem
Conventional image forming apparatuses face challenges in detection accuracy and processing delays due to differences in binarization timing based on image data resolution, leading to increased circuit complexity and costs.
Innovation Solution
An image forming apparatus with an image processing unit that stores low-resolution image data in a file memory for detection processing before binarization and performs multivalue converting and detection processing on high-resolution data after binarization, optimizing the processing sequence to avoid delays and maintain accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If image data is uniformly subjected to binarization processing before detection processing, then processing flow is simplified, but detection accuracy is lowered
Solution Approach 1:
The patent applies different processing approaches based on the local characteristics of image data. Low-resolution image data undergoes detection processing before binarization to maintain accuracy, while high-resolution image data undergoes binarization before detection processing. This localized differentiation resolves the contradiction by optimizing each case according to its specific requirements rather than applying a uniform approach.
2Quantity of substance
If image data high in resolution is binarized immediately after rasterization, then amount of data to be handled is minimized, but processing delay occurs when followed by low-resolution data
Solution Approach 1:
The patent performs preliminary classification of image data resolution before determining the processing flow. By identifying whether image data is high or low resolution in advance, the system can pre-determine the optimal processing sequence, avoiding delays caused by uniform processing approaches and enabling efficient pipeline management.
3Measurement precision
If dedicated circuitry for detection processing is provided for each resolution type, then detection accuracy is maintained, but circuit scale increases leading to higher manufacturing cost
Solution Approach 1:
The patent employs a universal detection processing unit that can handle both high-resolution and low-resolution image data. By using a single multi-functional detection unit rather than separate dedicated circuitry for each resolution type, the system maintains detection accuracy across different resolutions while avoiding the increased circuit scale and manufacturing costs that would result from multiple dedicated units.
Data Source
AI summary
An image forming apparatus includes circuitry that binarizes image data, a memory, and a print engine unit that forms an image of the binarized image data. When the image data is low in resolution, the circuitry has the image data stored in the memory and thereafter performs on the image data, detection processing for detecting whether or not the image data includes a predetermined pattern before binarization processing. When the image data is high in resolution, the circuitry binarizes the image data, thereafter has the image data stored in the memory, thereafter further performs multivalue converting processing on the image data, and thereafter performs detection processing.