Hybrid Ultrasonic Touchscreen Input Device Tuning
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Solution Overview
Problem
Current electronic devices require separate input devices for touchscreen and ultrasonic-based applications, which is costly and inconvenient, and existing ultrasonic position calculation methods are resource-intensive and prone to environmental condition dependencies.
Innovation Solution
A hybrid input device with a touchscreen stylus and a writing instrument, equipped with an ultrasonic transmitter and a control element, that toggles between touchscreen and ultrasonic modes, and a tuning module that compares touchscreen and ultrasonic coordinates to determine tuning parameters, reducing the need for additional mobile device resources and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate input devices are used for touchscreen and ultrasonic-based applications, then functionality is achieved, but cost and device complexity increase
Solution Approach 1:
The patent combines touchscreen stylus functionality and ultrasonic transmitter functionality into a single hybrid input device. The housing contains both a stylus for touchscreen interaction and an ultrasonic transmitter for off-display ultrasonic-based input, eliminating the need for separate input devices and reducing overall system complexity.
Solution Approach 2:
The hybrid input device is designed to perform multiple functions: it can be used as a touchscreen stylus for on-display interaction and as an ultrasonic input device for off-display interaction. The control element allows the device to toggle between these two modes, providing universal functionality across different application types.
2Adaptability or versatility
If ultrasonic position calculation methods are used, then off-display functionality is achieved, but resource consumption increases
Solution Approach 1:
The control element enables dynamic switching between touchscreen mode and ultrasonic mode based on user needs and environmental conditions. This allows the system to use ultrasonic functionality only when off-display input is required, rather than continuously, thereby reducing overall resource consumption while maintaining versatility.
3Measurement precision
If existing ultrasonic position calculation methods are used, then position tracking is achieved, but precision is affected by environmental conditions
Solution Approach 1:
The patent includes a tuning module that performs calibration by comparing touchscreen coordinate points with ultrasonic coordinate points. This feedback mechanism allows the system to determine tuning parameters and apply corrections to the ultrasonic tracking algorithm, compensating for environmental variations such as temperature and humidity that affect ultrasonic wave propagation.
Solution Approach 2:
The tuning module dynamically adjusts tuning parameters of the ultrasonic tracking algorithm based on calibration data collected during semi-automatic or automatic configuration modes. These parameter changes compensate for environmental factors that affect ultrasonic wave speed and propagation, thereby maintaining position tracking precision under varying conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hybrid input device provides a single device for both on-display touchscreen and off-display ultrasonic functionality, reducing resource usage and improving precision by dynamically adjusting to environmental conditions, thus addressing the limitations of existing technologies.
Implementation Method 1
an ultrasonic transmitter that transmits an ultrasonic data pattern
Implementation Method 2
existing ultrasonic position calculation methods
Data Source
AI summary
A hybrid input device is described. The hybrid input device includes a stylus for writing on a touchscreen, a writing instrument and a pressure sensor. The hybrid input device also includes an ultrasonic transmitter that transmits an ultrasonic data pattern. The hybrid input device also includes a control element that toggles ultrasonic functionality of the hybrid input device.