Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may include feedforward control and a feedback control for a power supply for the light-emitting diodes. The feedforward control may include host circuitry for the device that determines a maximum zone current, a maximum row current, and the maximum row-to-row current step for an upcoming backlight frame while a current backlight frame is being executed. A headroom voltage for the upcoming backlight frame is determined based on the maximum zone current, the maximum row current, and/or the maximum row-to-row current step and provided to the power supply so that the power supply can settle at a corresponding supply voltage before the upcoming backlight frame is executed. The feedback control utilizes dynamic thresholds determined for each backlight frame to fine tune the feedforward-determined headroom voltage.

Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may include feedforward control and a feedback control for a power supply for the light-emitting diodes. The feedforward control may include host circuitry for the device that determines a maximum zone current, a maximum row current, and the maximum row-to-row current step for an upcoming backlight frame while a current backlight frame is being executed. A headroom voltage for the upcoming backlight frame is determined based on the maximum zone current, the maximum row current, and/or the maximum row-to-row current step and provided to the power supply so that the power supply can settle at a corresponding supply voltage before the upcoming backlight frame is executed. The feedback control utilizes dynamic thresholds determined for each backlight frame to fine tune the feedforward-determined headroom voltage.

Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may include feedforward control and a feedback control for a power supply for the light-emitting diodes. The feedforward control may include host circuitry for the device that determines a maximum zone current, a maximum row current, and the maximum row-to-row current step for an upcoming backlight frame while a current backlight frame is being executed. A headroom voltage for the upcoming backlight frame is determined based on the maximum zone current, the maximum row current, and/or the maximum row-to-row current step and provided to the power supply so that the power supply can settle at a corresponding supply voltage before the upcoming backlight frame is executed. The feedback control utilizes dynamic thresholds determined for each backlight frame to fine tune the feedforward-determined headroom voltage.

Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may include feedforward control and a feedback control for a power supply for the light-emitting diodes. The feedforward control may include host circuitry for the device that determines a maximum zone current, a maximum row current, and the maximum row-to-row current step for an upcoming backlight frame while a current backlight frame is being executed. A headroom voltage for the upcoming backlight frame is determined based on the maximum zone current, the maximum row current, and/or the maximum row-to-row current step and provided to the power supply so that the power supply can settle at a corresponding supply voltage before the upcoming backlight frame is executed. The feedback control utilizes dynamic thresholds determined for each backlight frame to fine tune the feedforward-determined headroom voltage.

This application discloses a screen brightness adjustment method, an electronic device, and a computer-readable storage medium, to resolve a problem that visual perception of a user is greatly affected because a brightness jump visible to naked eyes occurs on a screen of the electronic device when the electronic device performs dimming mode switching. The screen brightness adjustment method is applied to a first electronic device and includes: The first electronic device obtains control information corresponding to a to-be-displayed picture frame, where the to-be-displayed picture frame is a kth picture frame obtained after it is detected that the dimming mode switching occurs, and 1kM; screen brightness indicated by the control information corresponding to the to-be-displayed picture frame is lower than first screen ideal brightness; and the first screen ideal brightness is a preset brightness threshold that triggers the first electronic device to perform the dimming mode switching; and when displaying the to-be-displayed picture frame, the first electronic device adjusts screen brightness of the first electronic device to the screen brightness indicated by the control information corresponding to the to-be-displayed picture frame.

This application discloses a screen brightness adjustment method, an electronic device, and a computer-readable storage medium, to resolve a problem that visual perception of a user is greatly affected because a brightness jump visible to naked eyes occurs on a screen of the electronic device when the electronic device performs dimming mode switching. The screen brightness adjustment method is applied to a first electronic device and includes: The first electronic device obtains control information corresponding to a to-be-displayed picture frame, where the to-be-displayed picture frame is a kth picture frame obtained after it is detected that the dimming mode switching occurs, and 1kM; screen brightness indicated by the control information corresponding to the to-be-displayed picture frame is lower than first screen ideal brightness; and the first screen ideal brightness is a preset brightness threshold that triggers the first electronic device to perform the dimming mode switching; and when displaying the to-be-displayed picture frame, the first electronic device adjusts screen brightness of the first electronic device to the screen brightness indicated by the control information corresponding to the to-be-displayed picture frame.

Disclosed are a screen brightness adjustment method and an electronic device. The screen brightness adjustment method is applied to a first electronic device. The first electronic device obtains control information corresponding to a to-be-displayed picture frame, where the to-be-displayed picture frame is a kth picture frame obtained after it is detected that the dimming mode switching occurs, and 1kM. Screen brightness indicated by the control information corresponding to the to-be-displayed picture frame is lower than first screen ideal brightness, and the first screen ideal brightness is a preset brightness threshold that triggers the first electronic device to perform the dimming mode switching. When displaying the to-be-displayed picture frame, the first electronic device adjusts screen brightness of the first electronic device to the screen brightness indicated by the control information corresponding to the to-be-displayed picture frame.

Disclosed are a screen brightness adjustment method and an electronic device. The screen brightness adjustment method is applied to a first electronic device. The first electronic device obtains control information corresponding to a to-be-displayed picture frame, where the to-be-displayed picture frame is a kth picture frame obtained after it is detected that the dimming mode switching occurs, and 1kM. Screen brightness indicated by the control information corresponding to the to-be-displayed picture frame is lower than first screen ideal brightness, and the first screen ideal brightness is a preset brightness threshold that triggers the first electronic device to perform the dimming mode switching. When displaying the to-be-displayed picture frame, the first electronic device adjusts screen brightness of the first electronic device to the screen brightness indicated by the control information corresponding to the to-be-displayed picture frame.