Wearable Display Use Detection for Battery-Saving Data Control

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Solution Overview

Problem

Wireless display systems with wearable devices face battery life issues due to continuous processing even when not in use, leading to unnecessary power consumption and reduced battery life for both wearable and host devices.

Innovation Solution

Implementing touch sensors in wearable display devices to determine their use status and control operations accordingly, allowing the devices to enter a reduced power state when not in use, and synchronizing this status with the host device to adjust data processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If continuous data processing is performed in wearable display devices, then display functionality is maintained, but battery life is reduced

Engineering Contradiction:

Improvebattery lifeVSAvoiddata processing

Core Design Contradiction:

Duration of action of moving objectVSProductivity

Solution Approach 1:

The system transitions between active and sleep states periodically based on usage detection. When the wearable device is removed from the user, processing enters a sleep state; when detected again, processing resumes. This periodic activation pattern reduces overall energy consumption while maintaining necessary functionality.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The wearable display device autonomously monitors its own usage state through sensors and automatically adjusts its processing mode accordingly. The device self-determines when to enter sleep state or resume active processing without requiring manual user intervention, optimizing battery life automatically.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If the wearable display device continuously processes and displays data, then user interaction is always available, but power consumption increases

Engineering Contradiction:

Improveuser interaction availabilityVSAvoidpower consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The system implements periodic state transitions between full operation and reduced power modes based on detected usage. The wearable device continuously monitors whether it is being worn and adjusts its operational state accordingly, maintaining ease of operation when needed while reducing power consumption during non-usage periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The operational state of the wearable device is made dynamic rather than static. The system adapts its processing and display functionality in real-time based on usage conditions, transitioning smoothly between active and sleep states to balance user interaction availability with power consumption requirements.

Inventive Principle:

Principle #15Dynamics

3Reliability

If the host device continuously sends multimedia data to the wearable display device, then data availability is ensured, but energy is wasted when not in use

Engineering Contradiction:

Improvedata availabilityVSAvoidunnecessary power consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The wearable display device provides feedback to the host device about its usage state. When the wearable device detects it is not being worn, it notifies the host device, which then stops or reduces data transmission. This feedback mechanism ensures data availability when needed while preventing energy waste during non-usage periods.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system takes preliminary action by having the wearable device monitor its usage state and proactively communicate with the host device before unnecessary data transmission occurs. The host device prepares to suspend or modify data transmission based on the usage status information received from the wearable device.

Inventive Principle:

Principle #10Preliminary action

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

This approach conserves battery life by ensuring that only active usage triggers processing, reducing unnecessary power consumption and extending the battery life of both wearable and host devices.

Implementation Method 1

determining a use status of a wearable display device based on feedback from one or more touch sensors of the wearable display device that indicates whether the wearable display device is worn by a user

Methodology Applied

Scientific EffectTouch sensing: Capacitance

Data Source

PatentUS9772494B2Wearable display device use-based data processing control

Publication Date: 2017.09.26 QUALCOMM INC

AI summary

Techniques are described for controlling operation of both a host device and a wearable display device connected to the host device based on a use status of the wearable display device. The techniques include automatically determining a use status of a wearable display device based on feedback from one or more touch sensors within the wearable display device that indicates whether the wearable display device is worn by a user. Based on the determined use status, the wearable display device controls its own operation (e.g., controls operation of display screens of the wearable display device, a communication session with the host device, and display processing of data received from the host device). The wearable display device also sends an indication of the use status to the host device. The host device then controls its own data processing for the wearable display device based on the indicated use status.