Player RSSI Distance Detection for Automatic Volume Adjustment

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Solution Overview

Problem

Users of smart devices face challenges in adjusting settings like brightness and volume due to changing distances, lack of remote controllers, low success rates with voice recognition, and unstable wireless communication, leading to a poor user experience and potential power wastage when devices are left on.

Innovation Solution

A player with a wireless communication function that establishes a connection with a portable device, calculates the received signal strength index (RSSI) to determine the distance and adjusts settings such as brightness and volume based on the ranging result, using Bluetooth Low Energy (BLE) communication and predetermined settings ranges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If voice recognition is used to adjust settings, then the user can adjust parameters without a remote controller, but the success rate is low and response is slow

Engineering Contradiction:

Improveease of adjustmentVSAvoidsuccess rate

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces voice recognition (acoustic field) with wireless signal-based distance detection (electromagnetic field). The player detects the portable device's wireless signal strength to calculate distance and automatically adjusts settings, eliminating the need for voice commands and improving reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If the user manually adjusts settings each time distance changes, then the settings can be optimized, but the user experience deteriorates due to frequent operations

Engineering Contradiction:

Improvesetting optimizationVSAvoidoperation frequency

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The player automatically detects the portable device's distance through wireless signal strength and self-adjusts the playback settings without requiring user intervention. The system monitors distance changes and autonomously optimizes brightness and volume, eliminating manual operations.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The player continuously monitors the wireless signal strength from the portable device and uses this feedback to dynamically adjust playback parameters. When distance changes are detected, the system automatically modifies settings to maintain optimal viewing and listening conditions.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If the smart device remains on to maintain readiness, then the device is available for use, but power is wasted when the user is away

Engineering Contradiction:

Improvedevice availabilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The player uses feedback from the portable device's wireless signal presence to determine user proximity. When no signal is detected after a predetermined time, the system infers the user is away and automatically enters sleep mode to conserve energy, while maintaining quick wake-up capability.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of the portable device's wireless signal before full operation is needed. This early detection allows the player to proactively adjust settings or enter power-saving modes, preventing unnecessary energy consumption while maintaining readiness.

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 solution allows for seamless adjustment of settings based on distance, enhancing user experience by maintaining optimal playback conditions and preventing unnecessary power consumption by automatically switching to sleep mode or turning off when devices are far away.

Implementation Method 1

obtains a received signal strength index (RSSI) of the portable device according to a wireless signal from the portable device

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

calculates an estimation distance between the player and the portable device according to the RSSI and thereby obtains the ranging result

Methodology Applied

Scientific EffectSignal strength-based distance estimation:

Data Source

PatentUS12134032B2Player and play method

Publication Date: 2024.11.05 REALTEK SEMICON CORP

AI summary

A player and a play method are capable of displaying image and/or playing music according to a ranging result. The player has a wireless communication function for establishing a wireless connection with a portable device. The player is configured to obtain a received signal strength index (RSSI) of the portable device according to a wireless signal from the portable device, then calculate an estimation distance between the player and the portable device according to the RSSI to obtain the ranging result, and then determine at least one play parameter such as the brightness or the volume of the player according to the ranging result.