US 11,688,346 B2 · Active optical component light emission control method

Abstract

An electronic device includes a display screen, a display control circuit, an active optical component, and an optical control circuit. The active optical component is located below the display screen. The display control circuit is configured to control refreshing of the display screen, and output a synchronization signal to the optical control circuit. The optical control circuit is configured to receive the synchronization signal, and control the active optical component to start light emission after a predetermined first delay that is after a moment corresponding to the synchronization signal to enable the display control circuit to refresh to one row of at least one row on the display screen corresponding to the active optical component after a predetermined second delay that is after the active optical component completes light emission.

Claims20

Dependent claims

An electronic device, comprising:

a display screen comprising at least one row of pixels;
an optical control circuit;
an active optical component located below the display screen, coupled to the optical control circuit, and corresponding to a first row of the at least one row;
and
a display control circuit coupled to the display screen and the optical control circuit and configured to:
refresh the display screen;
and
output a synchronization signal to the optical control circuit,
wherein the optical control circuit is configured to:
receive the synchronization signal;
and
control the active optical component to start light emission after a first delay that is after a first moment corresponding to the synchronization signal,
wherein the active optical component is configured to complete the light emission, and
wherein the display control circuit is further configured to refresh to the first row after a second delay that is after the active optical component completes the light emission.

11 more elements

An optical control circuit for an electronic device, wherein the optical control circuit comprises:

a memory configured to store code;
and
a processing circuit coupled to the memory and configured to execute the code to cause the optical control circuit to:
receive a synchronization signal from a display control circuit of the electronic device;
and
control an active optical component of the electronic device to start light emission after a first delay that is after a first moment corresponding to the synchronization signal to enable the display control circuit to refresh to a first row of at least one row of pixels on a display screen of the electronic device corresponding to the active optical component after a second delay that is after the active optical component completes the light emission,
wherein the second delay is greater than or equal to a duration (Tmin) and is less than a sensitivity (Tmax) of human eyes to recognize an object, and wherein Tmin is for restoring a pixel of the display screen to a normal electrical characteristic after the pixel is irradiated by a light emitted by the active optical component.

4 more elements

An active optical component control method implemented by an optical control circuit in an electronic device, wherein the active optical component control method comprises:

receiving a synchronization signal from a display control circuit of the electronic device, wherein the electronic device further comprises a display screen comprising at least one row of pixels and an active optical component located below the display screen;
and
controlling the active optical component to start light emission after a first delay that is after a moment corresponding to the synchronization signal to enable the display control circuit to refresh to a first row of at least one row of pixels on the display screen corresponding to the active optical component after a second delay that is after the active optical component completes the light emission.

Dependencies are inferred from the claim text.

Active optical component light emission control method

Life of this patent

Active optical component light emission control method

Life of this patent

Abstract

Claims20