Display Sound Compensation via Temperature Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices experience variations in sound pressure levels due to temperature changes, affecting the quality of sound output across different ambient temperatures.
Innovation Solution
A display device with a sound generation system that includes a temperature sensor, memory for storing sound driving voltage data across various temperature ranges, and a sound driving circuit that compensates sound driving voltages based on ambient temperature, ensuring consistent sound pressure levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sound generation device operates without temperature compensation, then device complexity is reduced, but sound pressure level varies with temperature
Solution Approach 1:
The patent changes the electrical parameters (driving voltage amplitude and frequency) of the sound generation device based on temperature measurements. The sound driving circuit adjusts these parameters dynamically to compensate for temperature-induced variations in sound pressure level, thereby maintaining consistent audio output across different temperature conditions without significantly increasing system complexity
Solution Approach 2:
The patent implements a feedback mechanism where the temperature sensor continuously monitors the ambient temperature and feeds this information to the sound driving circuit. The circuit then adjusts the driving voltages accordingly, creating a closed-loop control system that automatically compensates for temperature variations and maintains stable sound pressure levels
2Reliability
If temperature compensation is implemented, then sound pressure level consistency is improved, but device complexity increases
Solution Approach 1:
The patent introduces a temperature sensor as an intermediary component that bridges the gap between environmental conditions and the sound generation device. This sensor provides temperature data to the sound driving circuit, which then uses this information to adjust driving parameters, achieving temperature compensation with minimal additional complexity
Solution Approach 2:
The sound driving circuit modifies electrical parameters (voltage amplitude and frequency) based on temperature feedback. By dynamically adjusting these parameters, the system compensates for temperature effects on sound pressure level while maintaining a relatively simple overall architecture
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
The solution effectively reduces temperature-induced variations in sound pressure levels, providing consistent audio performance across a range of temperatures.
Implementation Method 1
a sound generation device disposed on a surface of the display panel, where the sound generation device vibrates the display panel based on sound driving voltages to output sound
Implementation Method 2
a temperature sensor which senses the temperature and output temperature data
Implementation Method 3
The impedance and capacitance of a sound generation device may vary depending on the temperature of the display device
Data Source
AI summary
A display device includes: a display panel; a sound generation device disposed on one surface of the display panel, where the sound generation device vibrates the display panel based on sound driving voltages to output sound; and a sound driving circuit which generates the sound driving voltages, which is compensated based on an ambient temperature of the sound generation, based on sound data and supplies the sound driving voltages to the sound generation device.