The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Sep. 06, 2022
Apple Inc., Cupertino, CA (US);
Wegene H. Tadele, San Francisco, CA (US);
Habib S. Karaki, Sunnyvale, CA (US);
James C. Clements, Campbell, CA (US);
Chin S. Han, San Jose, CA (US);
Craig C. D'Souza, Pacifica, CA (US);
Daniel W. Labove, San Francisco, CA (US);
Esther Chen, Fremont, CA (US);
Joseph R. Lee, Millbrae, CA (US);
Kuo Jen Huang, San Jose, CA (US);
Wanfeng Huang, Fremont, CA (US);
Fred Y. Chou, Cupertino, CA (US);
Hongling Chen, San Jose, CA (US);
Ali M. Amin, Sunnyvale, CA (US);
Chia-Hsien Lin, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Robust estimation of temperatures inside and outside a device can be achieved using one or more absolute temperature sensors optionally in conjunction with thermopile heat flux sensors. Thermopile temperature sensing systems can measure a temperature gradient across two locations within the device, to estimate absolute temperature at locations that are impractical to measure using absolute temperature sensors. Using heat flux models associated with the device, the thermopile temperature sensing system can be used to estimate temperature associated with objects that contact an outer surface of the device, such as a user's skin temperature. Additionally, the thermopile temperature sensing system can be used to estimate ambient air temperature. Within a device, temperature measurements from the thermopile temperature sensors can be used to compensate sensor measurements, such as when the accuracy or reliability of a sensor varies with temperature.