US 11,776,101 B1 · Optical sensor signal processing for visual artifact detection and display self-diagnostics

Abstract

Visual artifact detection systems and methods are disclosed herein. In an example system, optical characteristic measurements (e.g., a luminance value) for a display are obtained over a length of time, such as during power cycle events of a computing device coupled to the display. Based on the measurements, ripple values are generated, where each ripple value indicates a change of the optical characteristic over a period of time. A first ripple value is identified that exceeds a threshold and a first time window for identifying a subsequent ripple exceeding the threshold is commenced. If a second ripple value exceeds the threshold in the first time window, a determination is made that the first ripple value corresponds to a visual artifact on the display. In response, a visual artifact indication is generated, such as a notification to a user and/or a dynamic adjustment to a display parameter for remediating the artifact.

Claims20

Dependent claims

A system for detecting visual artifacts in a display, comprising:

a processor circuit;
and
a memory that stores program code that is executed by the processor circuit to cause the system to:
obtain a sequence of optical characteristic measurements for at least a portion of the display using an optical sensor, each optical characteristic measurement capturing an optical characteristic of the display at a different time in the sequence;
generate a plurality of ripple values based at least on the sequence of optical characteristic measurements, each ripple value indicative of a change of the optical characteristic over a period of time;
identify a first ripple value of the plurality of ripple values that exceeds a threshold ripple value;
determine whether a second ripple value of the plurality of ripple values exceeds the threshold ripple value in a first time window, the first time window commencing at a time associated with the first ripple value;
in response to a determination that the second ripple value exceeds the threshold ripple value, determine that the first ripple value corresponds to a visual artifact;
and
generate a visual artifact indication in response to a determination that the first ripple value corresponds to a visual artifact.

7 more elements

A method for detecting visual artifacts in a display, comprising:

obtaining a sequence of optical characteristic measurements for at least a portion of the display using an optical sensor, each optical characteristic measurement capturing an optical characteristic of the display at a different time in the sequence;
generating a plurality of ripple values based at least on the sequence of optical characteristic measurements, each ripple value indicative of a change of the optical characteristic over a period of time;
identifying a first ripple value of the plurality of ripple values that exceeds a threshold ripple value;
determining whether a second ripple value of the plurality of ripple values exceeds the threshold ripple value in a first time window, the first time window commencing at a time associated with the first ripple value;
in response to a determination that the second ripple value exceeds the threshold ripple value, determining that the first ripple value corresponds to a visual artifact;
and
generating a visual artifact indication in response to a determination that the first ripple value corresponds to a visual artifact.

4 more elements

A computer-readable storage medium having computer program code recorded thereon that when executed by at least one processor causes the at least one processor to perform a method comprising:

obtaining a sequence of optical characteristic measurements for at least a portion of a display using an optical sensor, each optical characteristic measurement capturing an optical characteristic of the display at a different time in the sequence;
generating a plurality of ripple values based at least on the sequence of optical characteristic measurements, each ripple value indicative of a change of the optical characteristic over a period of time;
identifying a first ripple value of the plurality of ripple values that exceeds a threshold ripple value;
determining whether a second ripple value of the plurality of ripple values exceeds the threshold ripple value in a first time window, the first time window commencing at a time associated with the first ripple value;
in response to a determination that the second ripple value exceeds the threshold ripple value, determining that the first ripple value corresponds to a visual artifact;
and
generating a visual artifact indication in response to a determination that the first ripple value corresponds to a visual artifact.

4 more elements

Dependencies are inferred from the claim text.

Optical sensor signal processing for visual artifact detection and display self-diagnostics

Life of this patent

Optical sensor signal processing for visual artifact detection and display self-diagnostics

Life of this patent

Abstract

Claims20