Image Processing Apparatus Bidirectional Scanning Pixel Reordering
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Solution Overview
Problem
Conventional image processing systems face challenges in performing optimal image processing with directivity, leading to increased buffer sizes and circuit complexity due to the constraints of pixel data arrangement and processing direction, particularly in printing apparatuses with bi-directional scanning capabilities.
Innovation Solution
An image processing apparatus with multiple storage units and processing units that allow for pixel data rearrangement and processing in different directions, utilizing a directivity image processing unit to reorder and process pixel data based on previous processing results, enabling efficient image processing across multiple scanning directions without significant circuit scale increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image processing is performed with directivity using the conventional pixel arrangement order, then processing accuracy is improved, but buffer size and circuit scale increase due to the need to handle multiple scanning directions
Solution Approach 1:
The patent applies inversion by changing the conventional approach: instead of processing pixel data in the original arrangement order and dealing with multiple scanning directions separately, the system rewrites pixel data in the opposite or different order (e.g., from right-to-left instead of left-to-right) to match the scanning direction. This allows the same processing circuit to handle bidirectional scanning without increasing circuit scale, while maintaining processing accuracy through directivity-aware image processing.
Solution Approach 2:
The patent implements dynamics by making the pixel data arrangement order flexible and adaptable. The system can dynamically change the order of pixel data arrangement based on the scanning direction requirements. This dynamic reordering capability allows the processing circuit to maintain directivity awareness for different scanning directions without requiring separate dedicated circuits for each direction, thus avoiding circuit scale increase while preserving processing accuracy.
2Manufacturing precision
If image processing is performed with directivity for bi-directional scanning, then printing quality is improved, but buffer size increases due to the need to store and manage pixel data in multiple arrangements
Solution Approach 1:
The patent applies inversion by rewriting pixel data in the opposite order of the original arrangement. Instead of maintaining separate buffers for different scanning directions, the system inverts the pixel data order to match the current scanning direction. This approach allows the use of a single buffer while achieving directivity-aware processing for bidirectional scanning, thereby improving printing quality without significantly increasing buffer size.
Solution Approach 2:
The patent implements parameter changes by modifying the arrangement order parameter of pixel data based on scanning direction requirements. The system changes the order parameter dynamically - for example, switching between left-to-right and right-to-left ordering - to match the scanning direction. This parameter-based approach enables directivity-aware image processing with reduced buffer requirements compared to maintaining separate fixed buffers for each direction.
3Ease of operation
If the pixel data arrangement order is fixed in conventional systems, then processing simplicity is maintained, but the ability to perform optimal image processing for different scanning directions is limited
Solution Approach 1:
The patent implements dynamics by transforming the fixed pixel data arrangement into a dynamic, reconfigurable arrangement. The system can change the pixel data order based on scanning direction requirements while maintaining processing simplicity through automated reordering logic. This dynamic approach enables the same processing circuit to adapt to different scanning directions (left-to-right, right-to-left) without complicating the overall processing flow, thus achieving both simplicity and versatility.
Solution Approach 2:
The patent applies universality by designing a single pixel data arrangement unit that can serve multiple scanning directions. Instead of having separate dedicated circuits for different scanning directions, the universal arrangement unit can reconfigure the pixel data order to match any scanning direction requirement. This multi-functional approach maintains processing simplicity while enabling optimal image processing for various scanning directions.
Data Source
AI summary
An image processing apparatus comprises a first storage and a second, a plurality of image processing units that perform image processing on pixel data of image data read from the first storage or the second storage, and a writing unit that writes the pixel data, processed by the plurality of image processing units, into the second storage. The plurality of image processing units include a directivity image processing unit that performs image processing on the image data in mutually different directions by reading and supplying to an image processing unit of the plurality of image processing units the pixel data written into the second storage. Target pixel data processed by the directivity image processing unit is written into the second storage in an order of arrangement which is different from the order of arrangement of pixels in the image data stored in the first storage.