Portable Terminal Image Display Buffering and Decoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for displaying high-resolution images in portable terminals are time-consuming and hinder user interaction due to the need for decoding operations to be performed before image size reduction, which occupies extra memory and restricts other terminal tasks during decoding.
Innovation Solution
The method involves separately performing user interface and decoding operations by first displaying an enlarged thumbnail of an original image, which is stored in a zoom buffer, allowing continuous image quality improvement until the image is fully resized and displayed, enabling simultaneous user interaction during the decoding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the decoded image is subject to image size reduction process after decoding, then the image fits the screen of the small-sized display unit, but the process is time consuming and uses extra memory space
Solution Approach 1:
The patent applies preliminary action by performing image size reduction before decoding instead of after decoding. The compressed image is first resized to a smaller dimension that fits the display unit, then decoded to produce the final display-ready image. This eliminates the need for a second size reduction process after decoding, saving time and computational resources.
2Quantity of substance
If the conventional method displays a thumbnail first and then decodes the original image when user requests high-resolution, then memory space is saved, but a lot of time is required to decode the original image and the terminal cannot perform other tasks during decoding
Solution Approach 1:
The patent applies preliminary action by pre-resizing the compressed image to the display unit's dimensions before decoding. This preparation step ensures that when the image is decoded, it is already at the correct size for display, eliminating the need for post-decoding size reduction and allowing the system to handle multiple tasks concurrently.
Solution Approach 2:
The patent segments the image processing into distinct stages: first resizing the compressed image to match the display unit dimensions, then decoding the resized image. This segmentation allows each operation to be optimized independently and enables better resource management during processing.
3Adaptability or versatility
If the image size reduction process is performed after the decoding process, then the decoded image can be displayed on the small-sized display unit, but the process is time consuming
Solution Approach 1:
The patent applies preliminary action by performing the image size reduction operation before decoding. The compressed image is resized to match the display unit's dimensions in advance, so that when decoding occurs, the output is already at the correct display size. This eliminates the need for post-decoding size reduction and significantly reduces total processing time.
Data Source
AI summary
Provided are an apparatus and method for displaying an image in a portable terminal. The apparatus includes a display unit for displaying an image; a display buffer that stores the image to be displayed; a zoom buffer that temporarily stores an enlarged thumbnail to provide a better image quality; a memory that stores an original image of the thumbnail as a compressed image file; an interface unit that upon receiving an image enlargement request while the thumbnail is being displayed on the display unit, enlarges and stores the thumbnail, stored in the display buffer, in the zoom buffer, and sends an image quality improvement request to a decoder that continuously improves the image quality of the enlarged thumbnail stored in the zoom buffer by a predetermined amount.