Single-Digit Hand Text Input Through Dual-Feature Sensing
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Solution Overview
Problem
Traditional text input methods require users to familiarize themselves with a fixed keyboard layout, necessitating the use of multiple fingers and both hands to efficiently input text, which can be time-consuming, especially for single-hand use.
Innovation Solution
A method for text input using at least a digit of a human hand, where the digit's primary and secondary features are sensed to create an input unit, which is then mapped to characters using a lookup table, allowing for text input on a display via processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional keyboard layout is used, then text input can be performed using familiar fixed positions, but text input time increases especially when using single hand
Solution Approach 1:
The patent transforms the static keyboard layout into a dynamic virtual keyboard that adapts to hand movements. The virtual keyboard positions are not fixed but are determined by the relative movement between the hand and the display, allowing the keyboard to dynamically reposition based on user interaction patterns.
Solution Approach 2:
The patent adds a temporal dimension to keyboard interaction by utilizing the sequence of hand movements rather than requiring memorization of fixed spatial positions. The keyboard mapping is established through the trajectory and timing of hand movements, converting a 2D spatial problem into a 3D spacetime solution.
2Productivity
If multiple fingers and both hands are used for text input, then text input speed improves, but operation complexity increases
Solution Approach 1:
The patent makes a single digit perform multiple functions that traditionally required multiple fingers. By detecting different movement patterns, pressures, and trajectories of a single digit, the system can identify different keys and input actions, eliminating the need to coordinate multiple fingers.
Solution Approach 2:
The system automatically adapts to the user's natural hand movements and learns their input patterns over time. The virtual keyboard repositions and reconfigures itself based on detected movement patterns, eliminating the need for the user to manually adjust or memorize positions.
Data Source
AI summary
A method for text input using a preset digit of a human hand includes steps of placing the human hand in an initial location before sensing, recognizing a first original position and a second original position of the preset digit via a sensor, sensing a first feature via sensing a first part of the preset digit of the human hand, sensing a second feature via a second part of the preset digit of the human hand, combining the sensed first feature with the sensed second feature to create an input unit via a processor, associating characters to be input with first and second features to be sensed, comparing the input unit with the first and second features to be sensed associated with the characters to be input to retrieve a character intended to be input, and repeating the above steps until a text to be input is completely input.