Non-contact Gesture Control via Infrared Sensing and Interrupt Logic

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Solution Overview

Problem

Current electronic devices require complex and inconvenient operations for user interaction, such as pressing buttons and sliding to unlock or activate features, which can be simplified by enabling non-contact gesture control to enhance user experience.

Innovation Solution

An electronic device equipped with multiple infrared sensing units, a logic circuit, and a processor that recognizes gestures by generating interrupt signals when specific level changes are detected, allowing for the execution of corresponding commands such as unlocking or Bluetooth transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional contact-based operations (pressing buttons, sliding to unlock) are used, then the device can be controlled reliably, but the user interaction complexity increases and user experience deteriorates

Engineering Contradiction:

Improveuser interaction complexityVSAvoidoperating procedures

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces mechanical contact-based input methods (buttons, switches) with an optical sensing system using infrared sensors to detect hand gestures in the air, eliminating the need for physical contact and simplifying user interaction

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces infrared sensors as an intermediary between the user and the device control system, capturing hand gesture information optically and converting it into control signals without requiring direct mechanical contact

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple infrared sensing units are added to enable gesture recognition, then non-contact control capability is improved, but the device complexity increases

Engineering Contradiction:

Improvegesture recognition capabilityVSAvoidsensing system structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the sensing system into multiple independent infrared sensing units arranged in an array, where each unit detects gestures independently and the system recognizes patterns based on combined signals from multiple segments

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent designs the infrared sensing units to serve multiple functions: detecting hand presence, recognizing gesture patterns, and determining gesture direction, allowing a single component type to perform various control tasks

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If the processor continuously monitors all infrared sensing units to ensure high recognition accuracy, then gesture recognition precision is improved, but the energy consumption increases

Engineering Contradiction:

Improvegesture recognition accuracyVSAvoidprocessor energy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic sampling of infrared sensor data at specific intervals rather than continuous monitoring, allowing the processor to check for gestures at defined moments while conserving energy during idle periods

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent uses feedback mechanisms where the processor monitors interrupt signals from the sensing units and only performs full analysis when changes are detected, adjusting its monitoring intensity based on current system state and gesture detection needs

Inventive Principle:

Principle #23Feedback

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 efficient non-contact manipulation of electronic devices, improving user experience by recognizing gestures and executing commands with high accuracy and reducing user interaction complexity.

Implementation Method 1

multiple infrared sensing units, when there is a gesture passing over the infrared sensing units, status of levels outputted by output terminals of the multiple infrared sensing units may be changed

Methodology Applied

Scientific EffectInfrared radiation detection: Infrared Radiation

Data Source

PatentEP3217253B1Electronic device controllable by non-contact gesture

Publication Date: 2020.05.06 HUIZHOU TCL MOBILE COMM CO LTD

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AI summary

An electronic device controlled via a non-contact gesture is disclosed. The electronic device includes multiple infrared sensing units, when a gesture is passing over the infrared sensing units, status of levels outputted by output terminals of the infrared sensing units may be changed; a logic circuit, with its multiple input terminals being respectively connected to the output terminals of the multiple infrared sensing units, configured to, when there is a change in the levels outputted by the infrared sensing units, generate and output in interrupt signal; a processor, coupled respectively to the output terminals of the multiple infrared sensing units, and connected to the output terminal of the logic circuit, and configured to receive the interrupt signal and, when each time receiving the interrupt signal, acquire the level status at the output terminals of the infrared sensing units and save the level status as a set of level status data. The present disclosure can enhance the user experience.