Portable Terminal Screen Magnification Control via Tilt Detection
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Solution Overview
Problem
Existing portable terminal screen zoom-in and zoom-out methods using multi-touch functions require repetitive user input, leading to strain and inhibit simultaneous screen scrolling, necessitating an improved method for controlling screen display magnification.
Innovation Solution
An apparatus and method for controlling screen display magnification in portable terminals using tilt input, which includes a display unit, input unit, memory unit, and controller to measure and control magnification levels based on terminal tilt, allowing for zooming in and out without the need for repeated finger gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multi-touch function is used for screen zoom-in and out, then screen magnification control is provided, but repetitive user input is required causing strain and inhibiting simultaneous screen scrolling
Solution Approach 1:
The patent replaces the mechanical multi-touch gesture system with an acoustic wave-based magnification control system. Sound waves are used to detect terminal tilt and trigger magnification changes, eliminating the need for repetitive finger gestures on the touch screen.
Solution Approach 2:
The patent introduces sound waves as an intermediary between the user and the magnification control function. Instead of direct finger contact, sound waves detect terminal orientation and mediate the magnification adjustment, reducing direct user strain on the touch screen.
2Adaptability or versatility
If multi-touch function is used for screen zoom-in and out, then screen magnification control is provided, but screen scrolling operation is inhibited simultaneously
Solution Approach 1:
The patent replaces the mechanical multi-touch system with an acoustic wave-based system that uses sound to detect terminal tilt. This allows one-handed operation where the other hand remains free for scrolling, restoring simultaneous operation capability.
Solution Approach 2:
The patent transitions from two-dimensional touch screen gestures to three-dimensional sound wave detection of terminal orientation. This dimensional shift enables magnification control through terminal tilting rather than finger movements, freeing up touch screen interaction for scrolling.
3Ease of operation
If tilt-based magnification control is implemented, then user input strain is reduced, but device complexity increases due to additional sensing requirements
Solution Approach 1:
The patent makes the sound wave detection system multi-functional by using it for both magnification control and scroll operations. The same acoustic wave sensor detects terminal tilt for magnification while also detecting touch patterns for scrolling, reducing overall device complexity.
Solution Approach 2:
The terminal itself performs the sensing function using its existing microphone and processor to detect sound waves and calculate terminal orientation. No separate dedicated tilt sensor is required, as the terminal's existing components serve the additional magnification control function.
Data Source
AI summary
An apparatus and method for controlling a screen display in a portable terminal are provided. The apparatus includes a display unit, an input unit, a memory unit, a magnification identifying unit, and a controller. The display unit displays a screen display having a controlled magnification level. The input unit sets a zoom-in or zoom-out point on the screen display. The memory unit stores reference information for determining a zoom-in or zoom-out magnification level of the screen display. The magnification identifying unit measures a tilt of the portable terminal, and determines control or non-control of a magnification level of the screen display using the measured tilt. The controller controls the screen display according to the identified magnification level.