Display Control Circuit Voltage Detection Standby Mode

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Solution Overview

Problem

Current projector settings for standby modes are cumbersome, requiring users to navigate multi-layer menus to adjust power-saving settings for each signal transmission port, leading to wasted time and energy.

Innovation Solution

A display system with a control circuit that switches between normal, low power consumption, and high power consumption standby modes by detecting voltage variations on preset pins, enabling or disabling signal input and output ports to optimize power usage without manual menu settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If users manually configure standby mode settings for each signal transmission port through drop-down menus, then power consumption can be controlled, but the operation becomes cumbersome and time-consuming

Engineering Contradiction:

Improvepower consumptionVSAvoidsetting operation

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

The system automatically detects signal input through voltage detection on preset pins and autonomously switches between standby modes without requiring manual user configuration. The control circuit monitors voltage variations on signal input port pins and automatically adjusts power consumption settings, making the system self-configuring and eliminating cumbersome menu navigation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The control circuit continuously monitors voltage signals from preset pins on the signal input port and uses this feedback to automatically determine the appropriate standby mode. When voltage variation is detected, the system switches to high power consumption standby mode; when no variation is detected, it maintains low power consumption mode, creating a closed-loop automatic control system.

Inventive Principle:

Principle #23Feedback

2Loss of energy

If the projector remains in low power consumption standby mode, then energy is saved, but signal transmission functionality is unavailable

Engineering Contradiction:

Improvepower consumptionVSAvoidsignal transmission capability

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The system dynamically switches between low power consumption standby mode and high power consumption standby mode based on real-time detection of signal input. The control circuit monitors voltage variations on preset pins and automatically transitions between modes, allowing the projector to adapt its power consumption and signal transmission capabilities according to actual usage conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent replaces manual mechanical configuration (menu navigation and button pressing) with automatic electrical detection and control. The control circuit uses voltage detection on preset pins to automatically determine when signal transmission is needed, substituting automatic electrical control for manual mechanical operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If multiple signal transmission ports are continuously powered, then signal reception is always available, but unnecessary power consumption occurs

Engineering Contradiction:

Improvesignal reception availabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 process of setting projector standby modes, reducing power waste and enhancing user convenience by automatically adjusting power consumption based on signal input activity.

Implementation Method 1

the control circuit detects whether the preset pin of the signal input port generates a voltage variation or maintains at a preset voltage value during a preset period

Methodology Applied

Scientific EffectVoltage detection: Electric Field

Data Source

PatentUS12190760B2Display system and power-saving method thereof

Publication Date: 2025.01.07 CORETRONIC PROJECTION KUSN CORP

AI summary

A display system and a power-saving method thereof are provided. In a first standby mode, a control circuit of a display device detects whether a preset pin of a signal input port generates a voltage variation or maintains at a preset voltage value during a preset period. When the control circuit detects the voltage variation or the preset voltage value, the control circuit switches the display device to a second standby mode and generates an output signal according to an input signal received by the signal input port, and allows the output signal to be transmitted to the signal output port, or establishes a network connection according to the input signal. When the control circuit does not detect the voltage variation nor the preset voltage, the first standby mode is maintained by the control circuit.