Pointer Gravity Feedback for Touch Input Assist
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Solution Overview
Problem
Electronic devices with slow display refresh rates, such as those using electronic paper displays, often cause user input delays, leading to uncertainty and potential unintended selections due to the longer time it takes for input to be visually confirmed on the screen, especially with larger pixel granularity.
Innovation Solution
Implementing gravity-based link assist techniques that provide visual confirmation of user input more quickly by using pointer gravity feedback, which automatically positions the pointer at the assisted-center of a link when decelerating within a gravitational field, reducing uncertainty and improving target acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electronic paper display is used to reduce power consumption, then energy efficiency is improved, but display refresh rate decreases causing input confirmation delay
Solution Approach 1:
The display update process is segmented into two independent parts: the electronic paper display maintains its low-power static display mode while a separate LED indicator provides immediate tactile feedback for user input confirmation. This segmentation allows each component to operate optimally without compromising the other.
Solution Approach 2:
An LED indicator serves as an intermediary element that bridges the gap between user input and visual confirmation on the electronic paper display. The LED provides immediate feedback during the display's refresh cycle, mediating the delay between input and visual acknowledgment.
2Ease of manufacture
If larger pixel granularity is used in electronic paper display, then manufacturing cost is reduced, but input location precision deteriorates
Solution Approach 1:
The system provides immediate tactile feedback through the LED indicator when a user input is registered, confirming the exact location and validity of the input before the visual display updates. This feedback mechanism compensates for the reduced precision by giving users real-time confirmation of their input location.
Solution Approach 2:
The LED indicator provides preliminary confirmation of input registration before the visual display updates. This preliminary action allows users to verify their input was registered at the correct location, enabling correction if needed before the display refreshes.
3Use of energy by moving object
If display refresh time is extended for power savings, then energy efficiency is improved, but user input feedback immediacy deteriorates
Solution Approach 1:
The feedback system operates dynamically with two modes: immediate tactile feedback through the LED indicator for every user input, and periodic visual updates on the electronic paper display. This dynamic approach provides responsiveness when needed while maintaining energy efficiency during normal operation.
Solution Approach 2:
The electronic paper display performs periodic visual updates at extended intervals to conserve energy, while the LED indicator provides continuous immediate feedback for user inputs. This periodic action pattern maintains energy efficiency while ensuring user interaction remains responsive.
Data Source
AI summary
A user interface of an electronic content rendering device implements input assistance to enhance user experience when browsing linked content. As a touch input moves along a trajectory, an input assistance application provides enhanced fields associated with various navigation elements as the touch input draws toward the navigation elements. Responsive to detecting deceleration of the touch input within a threshold distance of a navigation element, the input assistance application enhances the associated field.