Automatic Display Power Control via DVI Signal Detection
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Solution Overview
Problem
The existing process for turning on or off computer devices is complex and inconvenient for users, requiring manual operation of both the host and display device and involving multiple steps to prevent accidental power supply activation.
Innovation Solution
A computer device with a host generating turn on/off signals and an automatic control circuit in the display device that automatically turns the display unit on or off based on these signals, using a digital visual interface (DVI) input/output for signal transmission and a relay to control power supply connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation of power on/off buttons for both host and display device is used, then the user has direct control over each device, but the operation process becomes complex and inconvenient
Solution Approach 1:
The display device automatically detects the host's power state through the DVI interface and self-adjusts its power state without requiring user intervention. The system performs the power management task itself by monitoring the host's ready state and automatically turning the display on or off accordingly, eliminating the need for manual button operations.
Solution Approach 2:
The DVI interface is utilized for multiple functions: its original video transmission function plus an additional function of transmitting power state signals. By making the DVI interface multi-functional, the patent enables automatic power state synchronization without adding separate control circuits or interfaces, thereby simplifying the overall power management process.
2Reliability
If external power is continuously supplied to prevent accidental operation, then the power supply circuits remain ready to work, but the risk of accidental power activation increases
Solution Approach 1:
The power supply state is made dynamic rather than static. The display device continuously monitors the host's power state through the DVI interface and dynamically adjusts its own power state. When the host is off, the display automatically cuts its own power supply, eliminating the risk of accidental operation while maintaining readiness to power on when needed.
Solution Approach 2:
The system implements feedback by having the display device continuously monitor the host's power state through the DVI interface. This feedback mechanism allows the display to detect when the host is turned off and automatically respond by cutting its own power supply, thereby preventing accidental activation while maintaining system reliability.
3Ease of operation
If the display device automatically detects host power state, then the power management process is simplified, but additional control circuits are required
Solution Approach 1:
The DVI interface is utilized for multiple functions: its original video transmission function plus an additional function of transmitting power state signals. By making the DVI interface multi-functional, the patent enables automatic power state synchronization without adding separate control circuits or interfaces, thereby simplifying the overall power management process.
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
This solution simplifies the power management process by allowing the display device to be automatically turned on or off in sync with the host, enhancing user convenience and reducing the risk of accidental power activation.
Implementation Method 1
a relay to control power supply connections
Data Source
AI summary
An exemplary computer device (10) includes a host (11) configured for generating a turn on signal when the host is turned on, and a turn off signal when the host is turned off; and a display device (13) including a display unit (131) and an automatic control circuit (12). The automatic control circuit is configured for receiving the turn on signal and the turn off signal and turning on or turning off the display unit according to the received the turn on signal and the turn off signal. Thus when the host of the computer is turned on or turned off, the display unit of computer device can be automatically turned off or turned on according to a switch instruction of the host.