Stylus Trajectory Detection Using Integrated Optical Components

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Solution Overview

Problem

Conventional styluses require cooperation with touch panels, limiting their use flexibility as standalone devices.

Innovation Solution

An electronic device comprising a light-emitting component, a photosensitive component, and a processor that emits probe light, acquires optical information from reflected light, and determines movement trajectories without needing external devices, enhancing flexibility by allowing standalone operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a stylus uses conventional touch panel cooperation, then it can determine movement trajectory, but its use flexibility is limited as it requires external devices

Engineering Contradiction:
Improveuse flexibilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stylus performs self-measurement of its own movement trajectory using integrated light-emitting and light-receiving components, eliminating the need for external measurement devices or touch panel cooperation. The device serves itself by emitting probe light, detecting reflected light, and independently calculating trajectory data.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The stylus integrates multiple functions into a single device: light emission for probing, light reception for detection, processing unit for trajectory calculation, and storage for data retention. This multi-functional integration allows the stylus to operate independently without requiring specialized external equipment.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a stylus integrates light-emitting and photosensitive components, then it can operate standalone, but the device structure becomes more complex

Engineering Contradiction:
Improvestandalone operation capabilityVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines previously separate functions (light emission, light detection, trajectory calculation, and data storage) into a single integrated stylus device. The light-emitting component and photosensitive component are merged within the same device body, along with the processing unit and storage unit, creating a self-contained system.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The stylus performs self-measurement of its own movement trajectory using integrated light-emitting and light-receiving components, eliminating the need for external measurement devices or touch panel cooperation. The device serves itself by emitting probe light, detecting reflected light, and independently calculating trajectory data.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If the stylus uses reflected light for trajectory detection, then it achieves standalone functionality, but measurement precision may be affected by environmental factors

Engineering Contradiction:
Improveindependent trajectory determinationVSAvoidtrajectory measurement accuracy
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The processing unit analyzes the intensity and characteristics of reflected light to determine trajectory information. By continuously monitoring light reflection patterns and comparing them against expected patterns, the system can compensate for environmental variations and maintain measurement accuracy.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces mechanical or electrical contact-based trajectory detection with optical detection using light emission and reflection. This substitution allows for non-contact, standalone trajectory measurement while maintaining precision through optical signal analysis.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 the electronic device to independently determine movement trajectories, improving its usability and functionality without requiring additional devices.

Implementation Method 1

a light-emitting component configured to emit probe light

Methodology Applied
Scientific EffectLight emission: Light

Implementation Method 2

a photosensitive component configured to acquire optical information about reflected light of the probe light in response to receiving the reflected light

Methodology Applied
Scientific EffectLight detection: Photoelectric Effect

Data Source

PatentUS11960662B2Method for determining movement trajectory, and electronic device
Publication Date: 2024.04.16 BEIJING BOE DISPLAY TECH CO LTD
  • US11960662B2 patent drawing
  • US11960662B2 patent drawing
  • US11960662B2 patent drawing

AI summary

A electronic device includes: a body, a light-emitting component, a photosensitive component, and a processor, wherein the light-emitting component, the photosensitive component, and the processor are all disposed in the body, and the photosensitive component is connected to the processor; the light-emitting component is configured to emit probe light; the photosensitive component is configured to acquire optical information about reflected light of the probe light in response to receiving the reflected light; and the processor is configured to determine a movement trajectory of the light-emitting component based on the optical information.