Central Unit Preprocessing for Portable Text Display Adaptability
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Solution Overview
Problem
Portable devices struggle to efficiently display images with multiple lines of text, such as PDF or TIFF files, as they often require complex resizing, cropping, and aspect ratio changes, leading to issues like cut or duplicated text lines, which are undesirable for readability.
Innovation Solution
A system where a central unit preprocesses images by identifying suitable cropping, sizing, and rotation parameters, and communicates these along with the image to a portable unit, allowing it to control display modes that optimize image presentation without the need for extensive computations on the portable device, ensuring text lines are not duplicated or divided.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the portable device performs complex resizing, cropping, and aspect ratio changes locally, then the display flexibility is improved, but the computational load and processing time increase significantly
Solution Approach 1:
The central unit pre-calculates and prepares multiple versions of the image with different cropping, sizing, and rotation parameters before transmission to the portable device. This preliminary processing eliminates the need for the portable device to perform complex computations locally, resolving the contradiction between display flexibility and computational load.
Solution Approach 2:
The central unit acts as an intermediary that handles the complex image processing tasks. Instead of the portable device directly performing resizing and cropping operations, the central unit prepares the processed images and transmits them to the portable device, which then only needs to select and display the pre-processed versions.
2Area of stationary object
If the image is cropped to fit the display area, then the visibility is improved, but text lines may be cut or duplicated
Solution Approach 1:
The central unit performs preliminary analysis of the image to identify optimal cropping positions that align with text line boundaries. By pre-calculating crop regions that avoid cutting through text lines, the system maintains text line integrity while achieving full display coverage.
Solution Approach 2:
The system applies different cropping strategies to different regions of the image based on local characteristics. Text-heavy regions are cropped along text line boundaries to maintain integrity, while other regions can be cropped more freely to optimize display coverage.
3Adaptability or versatility
If multiple image versions are prepared for different display modes, then the adaptability is improved, but the data transmission volume increases
Solution Approach 1:
The central unit prepares a set of image versions that can serve multiple display modes and scenarios. By creating universally applicable processed versions that work across different modes (full screen, thumbnail, different aspect ratios), the system achieves high adaptability without needing to transmit completely separate versions for each mode.
Solution Approach 2:
Instead of transmitting multiple complete image versions, the system transmits the original image along with metadata containing cropping, sizing, and rotation parameters. The portable device can then generate the needed variations by applying these parameters, significantly reducing data transmission volume while maintaining adaptability.
Data Source
AI summary
A system for providing visual information to a user, the system comprising a central unit and a portable unit adapted to communicate with each other and wherein: the central unit is adapted to: identify the information to be provided to the user, the information being an image comprising a plurality of lines of text, provide first information relating to a plurality of suitable croppings, sizes, resolutions, and/or aspect ratios of the image, provide second information as to one or more position(s) between two adjacent lines of text, forward the first and second information, as well as the image, to the portable unit, portable unit comprises: means for receiving the first and second information and the image, a display adapted to provide visual information to the user, and means for controlling the display in one of at least three modes, wherein: in a first mode, the image is converted into a first altered image by adapting the image of the visual information to a first size, cropping or resolution as derived from the first information, in a second mode, the image is converted into a second altered image by adapting the image of the visual information to a second size, cropping or resolution as derived from the first information, and in a third mode, a part of the image of the visible information is provided on the display, the part being a part of the image solely on one side of one or more of the positions of the second information.