Infrared Compensation for Display Device Interference
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Solution Overview
Problem
Infrared energy emitted by display devices interferes with infrared communication signals from remote controls, leading to potential signal loss or decoding issues in media devices.
Innovation Solution
An infrared energy compensation system that detects ambient infrared energy, determines a compensation based on the absence or presence of the remote control signal, and adjusts to reliably decode the infrared communication signal by accounting for interference from display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If display devices emit infrared energy as a byproduct of generating visible light, then the visual quality of displayed images is improved, but infrared communication signals from remote controls are interfered with
Solution Approach 1:
The patent detects the infrared energy emitted by the display device and uses this harmful interference as a reference signal to determine compensation characteristics. By analyzing the characteristics of the emitted infrared energy and applying compensating signals, the system converts the harmful infrared emission into useful information for signal recovery, enabling the display device to maintain its visual quality while compensating for the interference it causes to remote control communications
Solution Approach 2:
The system performs preliminary detection of infrared energy characteristics from the display device before the interference affects communication signals. By determining compensation characteristics in advance based on the detected infrared energy profile, the system prepares compensating signals that can be applied to subsequently received infrared signals, preventing the interference from degrading communication quality
2Illumination intensity
If backlighting level is automatically adjusted based on sensed ambient lighting conditions, then the visual quality of displayed images is improved, but the level of interfering emitted infrared energy changes and further interferes with infrared communication signals
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously detects the infrared energy emitted by the display device at different backlighting levels. Based on the detected infrared characteristics and the corresponding visual quality, the system determines compensation characteristics and adjusts the compensating signal accordingly. This closed-loop feedback allows the system to adapt to changing ambient lighting conditions and maintain effective infrared communication despite variable backlighting levels
Solution Approach 2:
The system dynamically adjusts the compensation characteristics based on real-time detection of infrared energy levels and communication signal quality. As ambient lighting conditions change and backlighting levels are automatically adjusted, the system continuously updates its compensation parameters to match the current operating conditions, making the interference compensation adaptive rather than static
3Reliability
If infrared energy interference levels are substantial, then the media device may not receive or properly decode infrared energy communication signals, but adding compensation mechanisms increases device complexity
Solution Approach 1:
The display device performs self-diagnosis and self-compensation by detecting its own infrared energy emissions and determining the characteristics of interference it causes. The system uses its existing infrared detection capabilities to measure the interference it generates, then applies compensation based on these self-measured characteristics, eliminating the need for external calibration equipment or complex manual configuration procedures
Solution Approach 2:
The patent combines the infrared detection function with the existing display device infrastructure, using the same detection mechanisms already present for other purposes. The compensation characteristics are determined by merging the analysis of displayed image characteristics with the detected infrared energy profile, integrating multiple functions into a unified compensation process that reduces overall system complexity
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 mitigates infrared interference, ensuring reliable reception and decoding of remote control signals by compensating for ambient and display-emitted infrared energy, thereby maintaining operational communication.
Implementation Method 1
An infrared detector in the media device detects infrared energy
Data Source
AI summary
Remote control signal detection systems and methods are operable to compensate detected infrared energy to identify an infrared energy communication signal emitted by a remote control. An exemplary embodiment detects first infrared energy, wherein the infrared energy communication signal is absent in the first infrared energy; determines compensation based on the first infrared energy; detects second infrared energy, wherein the infrared energy communication signal is present in the second infrared energy; and compensates the second infrared energy based on the determined compensation.