Multi-Modal Touch Input Integration via Pressure Thresholds
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Solution Overview
Problem
Computing devices with multiple touch interfaces often experience unintended activations due to inadvertent touches, such as wrist or palm contact, leading to unexpected behavior, which existing solutions typically address by disabling one touch interface at a time.
Innovation Solution
An apparatus and method that integrate multiple touch modules, including resistive, capacitive, and magnetic resonance sensors, using a pressure module to enable or disable touch modules based on pressure thresholds, allowing concurrent processing of inputs from different sensor types to differentiate between intended and unintended touches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple touch interfaces are enabled simultaneously, then the device can detect both intended and inadvertent touches, but unintended activations occur due to palm or wrist contact
Solution Approach 1:
The patent segments the touch detection function across multiple independent touch sensor types (capacitive, resistive, surface acoustic wave, infrared, optical imaging, dispersive signal technology, magnetic resonance, acoustic pulse recognition). Each sensor type operates independently and can be selectively enabled or disabled based on the detected touch characteristics, allowing the system to distinguish between intentional and unintentional contacts.
Solution Approach 2:
The patent changes the parameters of touch detection by utilizing multiple different sensor types with distinct detection mechanisms and characteristics. By monitoring parameters such as touch pressure, contact area, and sensor response patterns across different modalities, the system can differentiate between valid user inputs and inadvertent touches like palm or wrist contact.
2Reliability
If one touch interface is disabled to prevent inadvertent activation, then false touches are reduced, but concurrent processing of multiple touch inputs becomes impossible
Solution Approach 1:
The patent implements dynamic enabling and disabling of touch sensor modules based on real-time detection conditions. The system continuously monitors touch characteristics and adjusts which sensor types are active, allowing concurrent processing of multiple touch inputs when appropriate while preventing inadvertent activations when necessary. This dynamic adaptation enables the system to maintain both reliability and productivity.
Solution Approach 2:
The patent introduces an integration module that acts as an intermediary between multiple touch sensor modules and the processing system. This integration module coordinates the operation of different sensor types, manages their concurrent processing, and determines which inputs should be acted upon based on their validity, thereby enabling multi-touch processing without sacrificing accuracy.
3Reliability
If pressure threshold detection is added to distinguish intended touches, then inadvertent activations are prevented, but device complexity increases
Solution Approach 1:
The patent implements a pressure detection mechanism that serves multiple functions: it distinguishes between intentional and unintentional touches, enables dynamic enabling/disabling of touch sensor modules, and provides input data for the integration module's decision-making process. This multi-functional pressure detection reduces the need for separate complexity-added components while enhancing the system's ability to validate touch inputs.
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
Enables seamless operation of multiple touch interfaces by accurately distinguishing between intended and unintended touches, preventing unintended activations and allowing simultaneous use of different touch inputs without disrupting ongoing activities.
Implementation Method 1
the first touch module is based on capacitance
Implementation Method 2
the second touch module is based on magnetic resonance
Data Source
AI summary
For integrating multiple different touch based inputs, a method is disclosed that includes detecting a pressure at a screen pressure module, enabling a first touch module based on the pressure exceeding a pressure threshold value, and integrating input from a second touch module and the first touch module, the input from the first touch module and the second touch module being concurrently received.