MFP Preview Image Display Using Reduced Data Segmentation
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Solution Overview
Problem
Conventional image display methods in Multi-Functional Peripherals (MFPs) face delays when displaying compressed data, as they require expanding the data through an application program, leading to waiting times until the original image is fully displayed.
Innovation Solution
An image display apparatus and method that stores reduced image data alongside application data, allowing for on-the-fly enlargement or reduction based on user input, generating and displaying a preview image by determining the process target data and magnification from user operations, thereby reducing waiting times and optimizing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If compressed data is entirely expanded by launching an application program to display the original image, then image quality is improved, but waiting time until the image is displayed increases
Solution Approach 1:
The patent divides the image data into two segments: reduced image data (thumbnail) and original application data. The reduced image data is displayed first to provide immediate visual feedback, while the original data is expanded and displayed subsequently. This segmentation allows the system to balance between quick display (using reduced data) and high quality (using original data), resolving the contradiction between waiting time and image quality.
Solution Approach 2:
The patent performs preliminary action by pre-generating and storing reduced image data alongside the original compressed data. When a user requests to view an image, the system immediately displays the pre-prepared reduced image without waiting for the time-consuming expansion process, thereby reducing waiting time while maintaining the option to display high-quality original images when needed.
2Productivity
If reduced image data is used for display, then display speed is improved, but image quality deteriorates
Solution Approach 1:
The patent implements a dynamic display system that adapts between reduced image data and original application data based on user interaction. When a user simply views the preview, the reduced image is displayed for fast performance. When a user performs an enlargement operation, the system dynamically switches to displaying the expanded original data at the enlarged portion, thus maintaining high image quality when needed while preserving fast display speed for normal viewing.
Solution Approach 2:
The patent applies local quality by displaying high-quality original image data only in the enlarged portion where the user has indicated interest, while the rest of the display area continues to show the reduced image data. This selective application of high quality to specific regions resolves the contradiction by providing high image quality only where necessary, maintaining overall fast display performance.
3Manufacturing precision
If the original application data is expanded for every preview, then image quality is maintained, but processing time increases
Solution Approach 1:
The patent applies partial action by expanding and processing only the necessary portion of the original application data - specifically, only the enlarged portion when a user performs an enlargement operation. The rest of the image continues to use the pre-prepared reduced data. This partial processing approach maintains image quality in the displayed region while significantly reducing processing time compared to expanding the entire original image.
Data Source
AI summary
An image display apparatus includes a storage portion to store application data and reduced image data thereof, in association with each other, a position detection portion to detect a position designated by the user on a display surface of a display portion, an enlargement operation detection portion to detect an enlargement operation, a first image display portion to display a first display image generated from the reduced image data as a preview image, a process target determination portion to determine process target data from the reduced image data and the application data, based on a magnification set based on the amount of operation in the enlargement operation, a second display image generation portion to generate a second display image based on the process target data, in response to the enlargement operation being detected, and a second image display portion to display the second display image as a preview image.