Systems and methods are provided that may be implemented to increase display panel brightness consistency when using an electronically-activated privacy filter of an information handling system to switch back and forth between a private viewing mode and a non-private viewing mode. The provided systems and methods may automatically vary the brightness intensity of currently-active display panel backlight/s without user control so as to compensate for changes in the display panel brightness that would otherwise occur due to changes in the number of active backlights caused by switching between private viewing mode and non-private viewing mode.

A signal processing method for maintaining a signal relative relationship and an electronic device thereof are provided. The signal processing method includes: detecting that a current input period of a vertical synchronization signal changes relative to a previous input period; determining whether a frequency difference between a pulse width modulation signal and the vertical synchronization signal is within an acceptable range, and when the frequency difference is not within the acceptable range, performing a frequency adjustment stage to adjust a period of the pulse width modulation signal to be close to the current input period; selectively performing a phase adjustment stage to adjust a phase of the pulse width modulation signal to a phase of the vertical synchronization signal; and maintaining a relative phase relationship between the pulse width modulation signal and the vertical synchronization signal.

A luminescence shock avoidance algorithm selectively limits the brightness level of a display device when the display device is activated in a dark environment to prevent the temporary vision impairment that can occur when a display device is activated in a dark environment. The algorithm receives the state of the display (e.g. on or in standby mode), and can optionally receive an ambient lighting value from an ambient light sensor and a user-selectable manual brightness adjustment setting to determine whether luminescence shock avoidance should even be triggered, and if it is triggered, how much should the brightness level of the display be limited.

A driving method includes: determining a starting luminance L.sub.S of a to-be-adjusted frame image; determining an average luminance L.sub.AVE(n) of the to-be-adjusted frame image during a nth duty period; determining a reference luminance flow rate ΔL that indicates a current change rate of a storage capacitor storing a data signal for a display element; determining a time length T.sub.F of a reference frame image; determining a number k of black strips in the to-be-adjusted frame image; calculating a duty ratio of a pulse driving signal of the to-be-adjusted frame image during the nth duty period based on the starting luminance L.sub.S, the average luminance L.sub.AVE(n), the reference luminance flow rate ΔL, the time length T.sub.F, and the number k of the black strips; and driving to display the to-be-adjusted frame image by the adjusted pulse driving signal.

A screen brightness adjustment method includes: determining a direction of brightness adjustment based on a screen brightness adjustment instruction, and controlling a brightness level of a screen and a grayscale parameter of an image displayed on the screen based on the direction of brightness adjustment, such that brightness of the screen is adjusted to target brightness desired by the screen brightness adjustment instruction.

One embodiment provides a method, including: producing, using one or more optical engines of an augmented reality display, an augmented reality scene; identifying, based upon a location of a gaze of a user, at least one object the user is viewing; and adjusting, based upon the identification of the at least one object, a drive strength of one or more pixels associated with at least one virtual object on the augmented reality display. Other aspects are described and claimed.

A display panel, a display driving method and a display pixel driving circuit therefor are provided. In the display driving method, the light emitting signal includes multiple pulse signals, and the variation trend of the pulse-off durations of the pulse signals is consistent with the variation trend of the light emitting brightness of the light emitting element during the light emitting period, that is, the pulse-off durations decreases sequentially with the decrease of the light emitting brightness of the light emitting element, or sequentially increases with the increase of the light emitting brightness of the light emitting element. Therefore, the flicker problem in the display panel when emitting light can be solved, and improving the image display quality.

An apparatus to facilitate regulating a display panel backlight is disclosed. The apparatus comprises one or more processors to receive a first image frame, generate a first correction lookup table associated with the first image frame, apply a filter to the first correction lookup table to generate a first smoothened lookup table and transform the first image frame using the first smoothened lookup table to generate a pixel boosted frame and a memory communicatively coupled to the one or more processors.

In one implementation, a method of controlling a dimming level of dimmable optical element based on a predicted ambient light level is performed at a device including one or more processors, non-transitory memory, and a dimmable optical element. The method includes predicting a change, in a first direction, in an ambient light level at a future time. The method includes changing, at a first time in advance of the future time and in the first direction, a transmission coefficient of the dimmable optical element based on the predicted change in the ambient light level. The method includes changing, at a second time after the first time and in a second direction opposite the first direction, the transmission coefficient of the dimmable optical element based on the ambient light level at the second time.

A display device includes: a gain provider configured to set a time point elapsed by a set period from a time point at which a first region of an input image is detected as a still region, as a set time, and to gradually decrease a gain value from the set time; and a grayscale converter configured to generate an output image by applying the gain value to the first region and a second region including a peripheral region of the first region among the input image, wherein the gain provider is configured to set the set period differently according to size of grayscale values in the first region.