Universal Stylus Multi-Protocol Communication

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Solution Overview

Problem

Existing active styluses are not universally compatible with different digitizer systems and computing devices, requiring pre-configuration and often getting lost or broken, leading to the need for multiple purchases.

Innovation Solution

A stylus that can transmit information in multiple configurations or communication protocols, including analog and digital encoding, allowing compatibility with various touch-enabled devices from different manufacturers and providing backwards compatibility, with features like wireless communication and multiple electrodes for simultaneous signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a stylus is designed to work with a specific digitizer system using a particular communication protocol, then the communication reliability is improved, but the adaptability to different devices deteriorates

Engineering Contradiction:

Improvecommunication reliabilityVSAvoiddevice compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The stylus incorporates multiple transmitters that can operate under different communication protocols (analog and digital encoding schemes). This allows a single stylus device to function with multiple types of digitizer systems, achieving universal compatibility while maintaining reliable communication with each specific system type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The stylus dynamically switches between different communication protocols based on the detected digitizer system type. The system can adapt its transmission method in real-time, transitioning between analog and digital encoding schemes to match the requirements of the target device, thereby maintaining both adaptability and communication reliability.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a stylus uses multiple transmitters with different communication protocols, then the adaptability to different devices is improved, but the device complexity increases

Engineering Contradiction:

Improvedevice compatibilityVSAvoidstylus structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stylus divides its transmission function into separate segments, with different transmitters dedicated to different communication protocols. This segmentation allows each transmitter to be optimized for its specific protocol while the overall system maintains simplicity through modular architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent combines multiple transmitters with different communication capabilities into a single integrated stylus device. By merging these functions, the stylus achieves multi-protocol support without requiring separate devices, managing complexity through unified design.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If a stylus provides backwards compatibility with older devices, then the adaptability is improved, but the communication precision for newer devices may deteriorate

Engineering Contradiction:

Improvebackwards compatibilityVSAvoidsignal detection accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The stylus applies different transmission qualities to different protocol types. When communicating with older devices using analog protocols, it uses analog encoding. When communicating with newer devices using digital protocols, it switches to digital encoding with higher precision, thus maintaining local optimization for each device type.

Inventive Principle:

Principle #3Local quality

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 input compatibility across different devices without pre-configuration, improving accuracy and reliability through dual encoding methods and wireless communication, reducing the need for multiple stylus purchases and enhancing user convenience.

Implementation Method 1

Tracking is based on detecting a signal emitted by a tip of the stylus and picked up by the digitizer sensor due to electrostatic coupling established between the tip and a portion of the matrix of electrode junctions

Methodology Applied

Scientific EffectElectrostatic coupling: Electrostatics

Implementation Method 2

A mutual capacitive sensor is one type of digitizer sensor for such digitizer systems

Methodology Applied

Scientific EffectCapacitive sensing: Capacitance

Data Source

PatentEP3241097B1Universal stylus and method of communication with a digitizer

Publication Date: 2020.10.21 MICROSOFT TECHNOLOGY LICENSING LLC

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AI summary

A method includes generating a first signal type and a second signal type in a handheld device and transmitting both the first signal type and the second signal type in a transmission cycle of the handheld device. The first signal type and the second signal type are different in at least one of frequency or modulation and are defined to include a same information related to the handheld device.