Dual-Input Display Sleep Mode Control via Interface-Specific Timing
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Solution Overview
Problem
Display devices with auto sleep functions consume excessive power due to the need to wait for a predetermined time before shifting to sleep mode, as they must account for both the device's and the image supply device's waiting times, leading to increased energy usage.
Innovation Solution
Implementing a control method that shifts to sleep mode after a continuous stop of the first image signal for a first time in one mode, and after a shorter second time for the second image signal in another mode, allowing for reduced power consumption by selectively adjusting the timing based on the mode of operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the display device uses a uniform waiting time for auto sleep function across all input interfaces, then the device can maintain consistent operation, but the power consumption increases due to the need to wait for the sum of both the image supply device's waiting time and the display device's waiting time
Solution Approach 1:
The patent applies local quality by setting different waiting times for different input interfaces. Specifically, the first waiting time is set for the first input interface and the second waiting time is set for the second input interface, allowing each interface to have optimized parameters suited to its specific usage scenario and image supply device characteristics.
Solution Approach 2:
The patent implements dynamics by making the waiting time configurable and adjustable based on the operating mode and input interface being used. The control circuit dynamically selects between the first waiting time and second waiting time depending on which input interface is active, allowing the system to adapt its behavior to minimize power consumption while maintaining appropriate responsiveness.
2Reliability
If the display device waits for the sum of both waiting times before entering sleep mode, then it ensures that the image supply device has fully entered sleep mode, but the time taken to enter sleep mode increases
Solution Approach 1:
The patent applies local quality by configuring interface-specific waiting times that are optimized for each input interface's characteristics and the associated image supply device. This allows the system to achieve reliable synchronization without unnecessarily waiting for the sum of both waiting times, as each interface has its own appropriately calibrated waiting period.
Solution Approach 2:
The patent implements self-service by enabling the display device to independently manage its own waiting time for each input interface without needing to coordinate with or wait for the image supply device's waiting period. The control circuit autonomously determines when to enter sleep mode based on the configured waiting time for the active interface.
Data Source
AI summary
A method for controlling a display device having a first interface to which a first image signal is inputted and a second interface to which a second image signal is inputted from an image supply device having an auto sleep function is provided. The method includes: shifting to a sleep mode in response to a continuous stop of the first image signal for a first time, in a first mode in which a first image based on the first image signal is displayed on a screen; and shifting to the sleep mode in response to a continuous stop of the second image signal for a second time that is shorter than the first time, in a second mode in which a second image based on the second image signal is displayed on the screen.