US 2022/0068227 A1 · Power Monitoring for Correcting Ambient Temperature Measurement by Electronic Devices

Abstract

This application is directed to a method for correct temperature measurement. An electronic device includes a temperature sensor that measures an ambient temperature of an environment and a display that is driven by a display driver. The electronic device determines a brightness setting of the display, estimates a display driver current based on the brightness setting, estimates a driver efficiency of the display driver based on the display driver current, and combines a predetermined display driver voltage, the display driver current, and the driver efficiency to determine a power consumption of the display driver. An ambient temperature correction is determined in accordance with the determined power consumption of the display driver, and the measured ambient temperature is thereby corrected using the ambient temperature correction. In some implementations, a power consumption of a distinct heat-generating electronic component is also monitored for adjusting the ambient temperature correction.

Claims20

Dependent claims

A method for correcting temperature measurement, comprising:

measuring an ambient temperature of an environment by a temperature sensor of an electronic device, wherein the electronic device includes a display panel driven by a display driver;
determining a power consumption of the display driver, including:
determining a brightness setting of the display panel;
estimating a display driver current based on the brightness setting;
based on the display driver current, estimating a driver efficiency of the display driver;
and
determining the power consumption of the display driver based on a predetermined display driver voltage, the display driver current, and the driver efficiency;
in accordance with the determined power consumption of the display driver, determining an ambient temperature correction;
and
correcting the measured ambient temperature using the ambient temperature correction.

7 more elements

An electronic device, comprising:

a temperature sensor;
a display panel driven by a display driver;
one or more processors;
and
memory storing one or more programs configured for execution by the one or more processors, the one or more programs including instructions for:
measuring an ambient temperature of an environment by the temperature sensor;
determining a power consumption of the display driver, including:
determining a brightness setting of the display panel;
estimating a display driver current based on the brightness setting;
based on the display driver current, estimating a driver efficiency of the display driver;
and
determining the power consumption of the display driver based on a predetermined display driver voltage, the display driver current, and the driver efficiency;
in accordance with the determined power consumption of the display driver, determining an ambient temperature correction;
and
correcting the measured ambient temperature using the ambient temperature correction.

12 more elements

Dependencies are inferred from the claim text.

Power Monitoring for Correcting Ambient Temperature Measurement by Electronic Devices

Life of this patent

Power Monitoring for Correcting Ambient Temperature Measurement by Electronic Devices

Life of this patent

Abstract

Claims20