Touchscreen Morse Code Input via Touch Duration Detection
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Solution Overview
Problem
Existing Morse code input methods for portable electronic devices require users to visually reference a keyboard and screen, making them difficult to use intuitively and confidentially, especially in emergency situations, as they rely on precise timing of key presses to distinguish between short and long signals.
Innovation Solution
A Morse code input method that uses a touchscreen to sense consecutive touch events, record, and compare time periods, identifying signals as short or long based on predefined multiples, allowing for intuitive and easy operation without requiring users to look at the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users use a keyboard to enter Morse code on a portable electronic device, then Morse code input is possible, but users must look at the keyboard and screen which reduces confidentiality and ease of use in emergency situations
Solution Approach 1:
The patent replaces the mechanical keyboard input system with a touchscreen-based system that uses time-period detection of touch events. This substitution eliminates the need for visual reference to a keyboard layout, allowing users to input Morse code through intuitive touch timing while maintaining confidentiality in emergency situations.
2Measurement precision
If users press keyboard keys for precise time periods to distinguish short and long signals, then Morse code can be accurately input, but it becomes difficult to operate intuitively in emergency situations
Solution Approach 1:
The system automatically detects and measures the time period of touch events on the touchscreen without requiring user intervention for timing. The processing circuitry inherently captures the duration of each touch gesture, converting natural user actions into accurate Morse code signals without demanding precise manual timing from the user.
Solution Approach 2:
The patent changes the input parameter from discrete keyboard key presses with specific duration requirements to continuous touchscreen touch events with naturally varying time periods. By detecting the actual touch duration and comparing it against threshold values, the system translates natural human gestures into precise Morse code representations.
Data Source
AI summary
A Morse code input method and a portable electronic device for performing the method are provided. The portable electronic device includes a processing circuit and a touchscreen. The method includes: sensing touch events by the touchscreen, recording and comparing time periods of the touch events by the processing circuit; identifying, by the processing circuit, inputs in the ith touch event through (k−1)th touch event as short signals when the time period of the kth touch event is greater than or equal to N times the time period of (k−1)th touch event and the kth touch event is not the last touch event, wherein N is a positive number, k and i are positive integers, with k being greater than or equal to i, and the ith touch event is the earliest one of the touch events in which inputs have not yet been identified as long or short signals.