Image Reproduction Device Cursor Speed Read-Ahead
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Solution Overview
Problem
Existing image reproduction devices face long waiting times when reproducing images in multi-reproduction mode, as they read ahead of both adjacent and non-adjacent images, leading to inefficient page turning and display operations.
Innovation Solution
An image reproduction method that reads and displays reduced-size images based on cursor movement speed, adjusting the read-ahead range and memory utilization to prioritize images likely to be displayed, and efficiently manages memory by overwriting less likely images, allowing for faster image reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If read-ahead of a large number of images is performed in multi-reproduction mode, then the display operation can be maintained, but the reproduction time of a new page increases significantly
Solution Approach 1:
The system performs read-ahead operations in advance to load reduced-size images into memory before they are actually needed for display. By pre-loading images based on cursor position and movement prediction, the system prepares data beforehand so that when a page turn occurs, the images are already available in memory, eliminating the need to read from the recording medium during the critical display moment.
Solution Approach 2:
The read-ahead range is dynamically adjusted based on cursor movement speed and direction. When the cursor moves slowly, the system reads ahead a smaller range; when the cursor moves quickly or changes direction, the system expands the read-ahead range. This dynamic adaptation optimizes memory usage and ensures that the right images are loaded without unnecessarily loading excessive data.
2Quantity of substance
If reduced-size images in adjacent pages are read ahead, then memory can be efficiently used, but a large number of images must be read out at once during page turning
Solution Approach 1:
The system performs read-ahead operations in advance to load reduced-size images into memory before they are actually needed for display. By pre-loading images based on cursor position and movement prediction, the system prepares data beforehand so that when a page turn occurs, the images are already available in memory, eliminating the need to read from the recording medium during the critical display moment.
3Ease of operation
If read-ahead operation and display operation are performed simultaneously, then the system can maintain continuous display, but the reproduction time of a new page increases
Solution Approach 1:
The system performs read-ahead operations in advance to load reduced-size images into memory before they are actually needed for display. By pre-loading images based on cursor position and movement prediction, the system prepares data beforehand so that when a page turn occurs, the images are already available in memory, eliminating the need to read from the recording medium during the critical display moment.
Solution Approach 2:
The system separates the read-ahead operation from the display operation by loading images into memory in advance. This segmentation allows the display operation to use pre-loaded images from memory without waiting for reading from the recording medium, thus maintaining continuous display while reducing new page reproduction time.
Data Source
AI summary
An image reproduction method includes: a reduced-size image reading step of reading a plurality of reduced-size images from a recording medium and storing the reduced-size images in a memory; a display step of multi-displaying the plurality of reduced-size images on a monitor; a cursor movement detection step of detecting a moving speed of a cursor indicating a selected reduced-size image from the plurality of reduced-size images displayed on the monitor; and an image read-ahead step of reading images from the recording medium according to the moving speed of the cursor and storing the image in the memory.