Display Device Input Voltage Controller for Power Optimization
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Solution Overview
Problem
In display devices, when the power supply generates an input voltage that is excessively large compared to the driving voltage, it leads to increased power consumption, necessitating optimization of the input voltage in relation to the driving voltage.
Innovation Solution
A display device with an input voltage controller that determines maximum and minimum scale factors based on a power control mode, calculates the maximum driving voltage, and generates an optimal voltage by adding a margin voltage to this, thereby optimizing the input voltage provided to the power supply and driving voltage generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply generates an input voltage that is excessively large compared to the driving voltage, then the power supply can provide sufficient voltage for all operating conditions, but power consumption of the power supply increases
Solution Approach 1:
The patent implements dynamic voltage adjustment by determining maximum and minimum scale factors based on power control modes, calculating optimal driving voltages dynamically, and adjusting the input voltage accordingly. This allows the power supply to adapt its output voltage to actual operating conditions rather than maintaining a fixed high voltage, thereby reducing power consumption while ensuring sufficient voltage for all operating conditions.
Solution Approach 2:
The patent changes the voltage parameter dynamically by calculating optimal driving voltages based on scale factors and power control modes. The input voltage is adjusted according to the calculated optimal voltage, which varies based on operating conditions. This parameter change approach allows the system to maintain voltage sufficiency while minimizing power consumption by using only the necessary voltage level.
2Use of energy by moving object
If the input voltage is optimized to reduce power consumption, then energy efficiency improves, but the system must accurately determine optimal voltage levels for varying operating conditions
Solution Approach 1:
The system performs self-service by automatically determining scale factors, calculating optimal driving voltages, and adjusting input voltage without requiring external intervention. The power supply controller autonomously monitors operating conditions and makes real-time voltage adjustments, eliminating the need for complex external control systems while achieving optimal power consumption.
Solution Approach 2:
The patent implements feedback mechanisms by determining scale factors based on power control modes and using these to calculate optimal driving voltages. The system continuously monitors operating conditions and adjusts the input voltage based on calculated values, creating a closed-loop control system that simplifies voltage management while achieving energy efficiency.
3Adaptability or versatility
If the power supply generates a high input voltage to accommodate maximum driving voltage requirements, then all operating conditions are covered, but power consumption increases when lower voltages would suffice
Solution Approach 1:
The patent applies partial action by determining minimum and maximum scale factors that represent only the necessary voltage range for current operating conditions. Instead of always providing maximum voltage, the system calculates and provides only the portion of voltage that is actually needed, thereby covering all operating conditions through dynamic adjustment rather than continuous excessive voltage provision.
Solution Approach 2:
The system dynamically adjusts the input voltage based on calculated optimal voltages derived from scale factors and power control modes. This dynamic approach allows the power supply to cover the full voltage range when needed while operating at lower voltages when sufficient, thereby maintaining adaptability while reducing energy waste.
Data Source
AI summary
A display device includes a display panel which displays an image based on output image data converted from input image data, an input voltage controller which determines a maximum scale factor and a minimum scale factor based on a power control mode set by a user, calculates a maximum driving voltage based on the maximum scale factor and the minimum scale factor, and calculates an optimal voltage based on the maximum driving voltage, a power supply which generates an input voltage based on the optimal voltage, and a driving voltage generator which generates a driving voltage provided to the display panel using the input voltage.