Wireless Sound Device Touch Mode Switching for Command Accuracy
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Solution Overview
Problem
Wireless sound devices with limited user input units face challenges in accurately receiving user commands due to their small size, leading to errors in command interpretation.
Innovation Solution
Incorporating a wireless communication unit, touch sensor, force sensor, and controller that switch between touch accepting and ignoring modes based on touch and force validity, allowing for precise command recognition and rejection, thereby enhancing command reception accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of the wireless sound device is reduced to improve portability and wearability, then the device becomes more portable and wearable, but the user input unit becomes too small to accurately receive user commands
Solution Approach 1:
The user input unit is divided into two separate sensing systems: a touch sensor for detecting touch inputs and a force sensor for detecting force inputs. This segmentation allows each sensor to specialize in detecting specific types of user interactions, improving overall command reception accuracy despite the limited size of the input unit.
Solution Approach 2:
The controller dynamically switches between touch accepting mode and touch ignoring mode based on the validity of touch inputs and force inputs. This dynamic adaptation allows the system to distinguish between intentional user commands and accidental touches, maintaining high command reception accuracy in a compact form factor.
2Volume of moving object
If the user input unit size is limited, then the device maintains compact form factor, but command interpretation errors increase
Solution Approach 1:
The controller acts as an intermediary that receives inputs from both the touch sensor and force sensor, validates them against predetermined criteria, and determines whether to execute the corresponding operation. This intermediary validation process filters out erroneous inputs and ensures reliable command interpretation despite the compact input unit size.
Solution Approach 2:
The system changes the operational parameters of the input unit by switching between different modes (touch accepting mode and touch ignoring mode) based on the combination of touch validity and force validity. This parameter switching enables the compact input unit to reliably distinguish between different types of user interactions and avoid misinterpretation.
3Measurement precision
If both touch sensor and force sensor are used, then command reception accuracy improves, but device complexity increases
Solution Approach 1:
The touch sensor and force sensor are merged into a single integrated sensing system within the user input unit, sharing common processing logic in the controller. This merging approach reduces overall system complexity compared to having separate processing units for each sensor type, while still maintaining high command reception accuracy through the combined sensing capabilities.
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 solution enables accurate and error-free reception of user commands despite the limited size of the user input unit, allowing for efficient and reliable command processing.
Implementation Method 1
a touch sensor for sensing a touch input of a user
Implementation Method 2
a force sensor for sensing a force based on the touch input
Data Source
AI summary
A wireless sound device capable of effectively receiving a command that meets a user's intention without an error despite a user input unit having a limited size, and a method for controlling the same. The wireless sound device includes a wireless communication unit for wireless communication with an external device, a touch sensor for sensing a touch input of a user in a touch standby mode, a force sensor for sensing a force based on the touch input, a sound output unit for outputting an audio signal received from the external device, and a controller that controls a touch mode of the wireless sound device to be switched to a touch accepting mode or a touch ignoring mode in response to the touch input, and, when a touch validity of the touch input is positive, the controller controls the touch mode to be switched to a touch accepting mode or a touch ignoring mode based on a force validity of the touch input.