Display Device Infrared Receiver Timing for Standby Power Reduction
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Solution Overview
Problem
The increasing power consumption of display devices, particularly in standby states, due to the growing size and functionality of display devices, necessitates a method to reduce power consumption in these states.
Innovation Solution
A display device equipped with a signal receiver that receives infrared light signals from a remote controller, controlled by a controller to activate and deactivate based on preset periods and signal durations, reducing power consumption in standby states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the signal receiver is continuously activated to ensure reliable remote control signal reception, then the reliability of control function is improved, but the power consumption in standby state increases
Solution Approach 1:
The signal receiver is activated periodically at predetermined intervals during standby state instead of continuously. The controller turns on the signal receiver for brief periods to check for remote control signals, then turns it off. This periodic activation maintains the ability to receive control commands while significantly reducing power consumption during standby operation.
Solution Approach 2:
The operating state of the signal receiver is dynamically changed based on system state. During standby, the receiver switches between active and inactive states periodically. When a signal is detected or during active operation, the receiver maintains continuous operation. This dynamic state adjustment optimizes both reliability and power consumption.
2Reliability
If the signal receiver is activated for a longer duration to ensure complete reception of control signals, then the reliability of signal reception is improved, but the power consumption increases
Solution Approach 1:
The signal receiver is activated for a duration that is sufficient to detect the presence of a remote control signal but not necessarily to complete full signal reception. The activation period is set to capture the leading edge of the signal, allowing the system to wake up and handle complete signal processing afterward, thus reducing unnecessary power consumption during signal reception.
Solution Approach 2:
The signal receiver performs preliminary detection of remote control signals during periodic activation in standby state. When a signal is detected, the system then activates fully to complete the signal reception and processing. This preliminary action allows the system to remain in low-power mode most of the time while still being able to respond to control commands.
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 method effectively reduces power consumption in standby states by selectively activating the signal receiver only when necessary, thereby optimizing energy use.
Implementation Method 1
a signal receiver configured to receive a control signal in form of infrared light, from a remote controller
Data Source
AI summary
A display device includes; a signal receiver configured to receive a control signal in form of infrared light, from a remote controller; and a controller configured to: control the signal receiver, based on the control signal received by the signal receiver, control the signal receiver, based on a first state in which the signal receiver is activated according to a preset period smaller than a duration of the control signal; in response to identifying the control signal by the signal receiver that is controlled based on the first state, control the signal receiver, based on a second state in which the signal receiver is activated during a time section longer than the duration of the control signal; and control the display device, based on the control signal identified by the signal receiver.