Television IR Emission Calibration for Remote Control Reliability
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Solution Overview
Problem
Infrared (IR) signaling from remote controls is often disrupted by IR emissions from display devices such as televisions and monitors, leading to operational issues with remote control functionality.
Innovation Solution
A television receiver system that initiates a calibration mode to generate test patterns to induce IR emissions, measure emission characteristics, and adjust IR configuration settings to mitigate interference, including optimizing power levels and encoding settings to reduce error rates and improve signal reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If display devices emit infrared energy during operation, then the display device can perform its display function, but infrared signaling from remote controls is disrupted leading to operational issues
Solution Approach 1:
The system performs preliminary calibration by displaying test patterns and measuring IR emissions before normal operation. This advance measurement allows the system to establish baseline interference characteristics and pre-compute compensation parameters, so that when actual remote control operations occur, the interference mitigation is already in place and functioning
Solution Approach 2:
The system continuously monitors IR emissions from the display device during operation and uses this feedback to dynamically adjust compensation parameters. The measured emission characteristics are fed back into the signal processing chain to real-time correct remote control signals, ensuring ongoing reliability despite varying display conditions
2Reliability
If the television receiver measures and adapts to specific IR emission patterns, then IR communication reliability is improved, but the device complexity increases due to calibration mode and measurement mechanisms
Solution Approach 1:
The television receiver's display function serves multiple purposes: it displays normal content for the user and simultaneously displays specific test patterns for IR emission measurement during calibration. This multi-functionality allows the same hardware to perform both viewing and measurement tasks without adding separate dedicated measurement equipment
Solution Approach 2:
The system performs its own calibration and measurement autonomously without requiring external test equipment or manual intervention. The television receiver generates its own test patterns, measures its own IR emissions using integrated sensors, and automatically computes compensation parameters, making the complex calibration process transparent to the user
3Reliability
If IR configuration settings are adjusted to mitigate interference, then signal reliability is improved, but power consumption increases due to optimized power levels and encoding settings
Solution Approach 1:
The system dynamically adjusts IR signal parameters such as power level and encoding scheme based on the measured interference conditions. Instead of using fixed high-power settings, the system optimizes parameters in real-time to achieve reliable communication at the minimum necessary power level, reducing overall energy consumption while maintaining signal reliability
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 system effectively reduces IR interference, ensuring reliable IR communication between remote controls and receivers by determining and adapting to specific IR emission patterns from various display devices, enhancing the stability and accuracy of remote control operations.
Implementation Method 1
Display devices such as televisions and monitors, for example, may emit infrared energy. The infrared energy emitted by the display devices may be a byproduct of the operation of the display.
Data Source
AI summary
Various arrangements for monitoring and mitigating infrared (IR) interference from a display device are presented. IR emissions from a display device are measured the IR signaling characteristics may be adjusted to mitigate interference from the emissions. Calibration methods may be used determine display emission characteristics by displaying test patterns and video clips. Characteristics of the display patterns and video clips may be correlated to high IR emissions.