Display Voltage Generator Frame Rate Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in maintaining image quality when the frame rate of image data signals varies, leading to irregular voltage fluctuations and potential crosstalk, which deteriorate the displayed image.
Innovation Solution
A display device with a memory, signal controller, and voltage generator that includes a frequency detector, power controller, and feedback circuit to adjust output voltages, currents, and signal frequencies based on detected frame rates, using DC-DC converters, comparators, and PWM controllers to stabilize voltage and current outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the frame rate of image data signal varies, then the display device can adapt to different content requirements, but voltage fluctuations and crosstalk occur causing image quality deterioration
Solution Approach 1:
The patent implements dynamic voltage adjustment by detecting the frame rate of incoming image data and automatically adjusting the voltage level provided to the display panel. The voltage generator changes voltage output based on detected frame rates (e.g., 60Hz, 120Hz, 240Hz), allowing the system to adapt to different content requirements while maintaining stable operation and preventing image quality deterioration.
Solution Approach 2:
The patent employs a feedback mechanism where a detector continuously monitors the frame rate of the image data signal and provides this information to the voltage generator. This closed-loop feedback system enables real-time voltage adjustment in response to frame rate changes, ensuring stable display performance across varying content conditions without causing crosstalk or image quality issues.
2Adaptability or versatility
If additional hardware is added to handle variable frame rates, then frame rate adaptation capability is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a unified voltage generator that can handle various frame rates (60Hz, 120Hz, 240Hz, etc.) through a single device with dynamic adjustment capability. This multi-functional approach eliminates the need for separate hardware circuits for each frame rate, reducing overall device complexity while maintaining comprehensive frame rate adaptation capability.
Solution Approach 2:
The patent achieves frame rate adaptation by changing the voltage parameter dynamically rather than adding complex hardware for each frame rate scenario. The voltage generator adjusts its output voltage based on the detected frame rate, providing a simple and elegant solution that avoids increasing device complexity while maintaining full adaptability to different frame rates.
3Reliability
If voltage is adjusted dynamically based on frame rate, then image quality is maintained across different frame rates, but control circuit complexity increases
Solution Approach 1:
The patent uses a feedback-based control system where a detector monitors the frame rate and provides this information to the voltage generator, which automatically adjusts its output. This feedback mechanism maintains image quality consistency across different frame rates through automatic voltage adjustment without requiring complex manual control circuits or multiple dedicated control units for each frame rate scenario.
Solution Approach 2:
The voltage generator performs self-adjustment based on the frame rate information it receives from the detector. The system automatically detects the frame rate and adjusts its own voltage output accordingly, eliminating the need for external complex control circuits or manual intervention. This self-service capability maintains image quality consistency while keeping the control architecture simple and integrated.
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 solution ensures high-quality image display by stabilizing voltage and current outputs, reducing crosstalk and electromagnetic interference, even with varying frame rates, thereby preventing IR-drop, voltage ripple, and crosstalk within the device.
Implementation Method 1
a DC-DC converter; and a feedback circuit configured to control an output of the DC-DC converter
Implementation Method 2
including a first comparator, a second comparator, and a PWM controller
Data Source
AI summary
A display device includes a memory, a signal controller, and a voltage generator. A plurality of data is stored in the memory. The signal controller detects a frame rate of an externally applied image data signal, selects data corresponding to the detected frame rate among the plurality of data, and outputs a control signal corresponding to the selected data. The voltage generator includes a DC-DC converter for determining an output voltage in correspondence to the control signal and a feedback circuit for determining a current flowing inside and a frequency of an outputted signal in correspondence to the control signal.