Copying Apparatus 90-Degree Image Data Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional copying apparatuses face difficulties in efficiently converting image data for recording when the scanning direction and recording direction are different, requiring complex data processing and increased memory capacity due to the need for 90-degree rotation of image data.
Innovation Solution
A copying apparatus with a commanding unit, scanning unit, compression unit, decompression unit, rotation processing unit, and recording unit that divides image data into sections aligned in one direction, allowing for efficient 90-degree rotation and recording without the need to combine decompressed data from multiple sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If image data is divided into multiple sections in both scanning direction and perpendicular direction, then compression efficiency is improved, but data processing complexity and memory requirements increase due to the need to connect multiple decompressed sections
Solution Approach 1:
The patent divides the image data into multiple sections only in the scanning direction (first direction), not in the perpendicular direction. This segmentation allows compression of each section independently while requiring connection of fewer decompressed sections compared to conventional meshwise division, thereby reducing memory capacity requirements and simplifying data processing complexity
Solution Approach 2:
The patent changes the dimensionality of section division from two-dimensional meshwise division (both scanning direction and perpendicular direction) to one-dimensional division (scanning direction only). This dimensional reduction eliminates the need to manage and connect sections in the perpendicular direction, significantly reducing memory requirements and processing complexity
2Adaptability or versatility
If 90-degree rotation processing is applied to convert image data for different recording direction, then adaptability to different scanning and recording directions is improved, but processing time and complexity increase
Solution Approach 1:
The patent performs preliminary organization of image data into sections along the scanning direction before rotation processing. This preliminary segmentation aligns the data structure with the intended rotation operation, enabling more efficient 90-degree rotation by reducing the complexity of data reorganization during the rotation process, thereby reducing processing time while maintaining directional adaptability
Solution Approach 2:
By dividing image data into sections only in the scanning direction, the patent reduces the overall data structure complexity before rotation. This segmentation strategy makes the subsequent 90-degree rotation processing more efficient compared to conventional meshwise division, as fewer sections need to be managed and connected during and after rotation
Data Source
AI summary
A copying apparatus is configured to repeat a first operation to scan an image on an original sheet along a first direction with changing a position of the first operation along a second direction perpendicular to the first direction, and generate pixel data of pixels of the image on the original sheet. Compressed image data is generated by compressing the pixel data within each of multiple sections divided in the first direction having boundaries extend in the second direction. The compressed image data is decompressed. A 90-degree rotation processing is applied to the decompressed image data in the unit of a band, which has a particular number of pixels in the first direction and extends along the second direction, to generate decompressed image data, Then, with use of the decompressed image data after rotation processing has been executed, the image is recorded on a recording sheet.