Apple inc. (20240339086). SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION simplified abstract
Contents
SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION
Organization Name
Inventor(s)
Mahesh B. Chappalli of San Jose CA (US)
Assaf Menachem of Hod Hasharon (IL)
Daniel Yechiel Dar of Givatayim (IL)
Ido Yaacov Soffair of Tel-Aviv (IL)
SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240339086 titled 'SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION
Abstract: An electronic display device has a panel that operates in conjunction with a light-emitting diode (LED) backlight. The device “slopes” or gradually ramps a change in brightness of an LED based on a target brightness value of the LED, a current brightness value of the LED, and temperature at the LED. The device also may limit power to the backlight based on an estimated power consumption of a current row of LEDs of the backlight and power consumption of the other rows of LEDs. The device also may determine a reduced voltage to supply to an LED based on a current to supply to the LED to cause the LED to operate. The device also may send an interrupt to the backlight to block updates to the backlight while image content is written to pixels of the panel. The device further compensates for aging of and temperature at an LED.
Key Features and Innovation:
- Device adjusts LED brightness gradually based on target brightness, current brightness, and temperature.
- Limits power to the backlight by estimating power consumption of LEDs.
- Determines reduced voltage supply to LEDs based on current supply.
- Sends interrupt to backlight to block updates during image content writing.
- Compensates for LED aging and temperature variations.
Potential Applications: - Smartphones and tablets - Monitors and TVs - Automotive displays - Wearable technology - Outdoor signage
Problems Solved: - Efficient power management for LED backlights - Consistent brightness levels across different temperature conditions - Prevents flickering and uneven lighting in displays
Benefits: - Improved energy efficiency - Enhanced display quality - Extended lifespan of LEDs - Better user experience with consistent brightness levels
Commercial Applications: Title: Advanced LED Backlight Control System for Electronic Displays This technology can be utilized in various industries such as consumer electronics, automotive, advertising, and wearable technology. It offers improved energy efficiency, display quality, and user experience, making it a valuable addition to products in these markets.
Prior Art: Prior art related to this technology may include patents or research papers on LED backlight control systems, power management for electronic displays, and temperature compensation for LEDs.
Frequently Updated Research: Researchers may be exploring advancements in LED technology, power management algorithms for displays, and temperature sensing techniques for LEDs to further enhance the capabilities of this technology.
Questions about LED Backlight Control Systems: 1. How does the device determine the reduced voltage to supply to an LED? The device calculates the reduced voltage based on the current required to operate the LED efficiently. 2. What are the potential drawbacks of using a gradual ramping system for adjusting LED brightness? Gradual ramping may introduce delays in brightness adjustments, which could impact user experience in fast-changing display content.
Original Abstract Submitted
an electronic display device has a panel that operates in conjunction with a light-emitting diode (led) backlight. the device “slopes” or gradually ramps a change in brightness of an led based on a target brightness value of the led, a current brightness value of the led, and temperature at the led. the device also may limit power to the backlight based on an estimated power consumption of a current row of leds of the backlight and power consumption of the other rows of leds. the device also may determine a reduced voltage to supply to an led based on a current to supply to the led to cause the led to operate. the device also may send an interrupt to the backlight to block updates to the backlight while image content is written to pixels of the panel. the device further compensates for aging of and temperature at an led.
