Control Device Voice Recognition with Display Sound Compensation

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Solution Overview

Problem

Existing image display apparatuses face challenges in accurately processing voice inputs due to interference from sound output, making voice recognition difficult, especially when controlling electronic devices remotely.

Innovation Solution

A control device that determines the angle and distance with the image display apparatus using signal processing, generates a compensation signal to correct for sound interference, and processes voice inputs based on this correction to enhance recognition accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If voice recognition is performed using a microphone in a control device, then the ability to remotely control electronic devices is improved, but voice recognition accuracy deteriorates due to interference from sound output by the image display apparatus

Engineering Contradiction:

Improveremote control capabilityVSAvoidvoice recognition accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent extracts and removes the harmful sound output signal from the voice input signal received by the microphone. The controller separates the user's voice from the sound output by the image display apparatus using signal processing techniques, effectively taking out the interfering sound component to improve voice recognition accuracy while maintaining remote control capability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary signal processing mechanism that mediates between the microphone input and voice recognition processing. The controller acts as an intermediary that processes the raw microphone signal by removing sound output interference before passing the cleaned signal to the voice recognition system, thus resolving the contradiction between remote control operation and voice recognition accuracy

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the image display apparatus outputs sound, then audio functionality is improved, but voice recognition accuracy deteriorates due to sound interference

Engineering Contradiction:

Improveaudio output capabilityVSAvoidvoice recognition accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent converts the harmful sound output interference into a beneficial process by using the known characteristics of the sound output signal to create a compensation signal. The controller generates this compensation signal based on the audio output and uses it to cancel out the interference in the microphone input, thereby allowing both audio output and accurate voice recognition to coexist

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS12356037B2Controller and system comprising same

Publication Date: 2025.07.08 LG ELECTRONICS INC

AI summary

The present disclosure relates to a control device and a system including the same. The control device according to an embodiment of the present disclosure includes: an external device interface unit configured to communicate with an image display apparatus; a microphone; and a controller, wherein the controller determines an angle and a distance between the control device and the image display apparatus, based on a signal transmitted and received through the external device interface unit, generates a compensation signal corresponding to a voice signal transmitted to the image display apparatus, when a voice input is received through the microphone, corrects the compensation signal, based on the determined angle and distance, and processes the voice input, based on the corrected compensation signal.