Apple Inc.

Ali M Amin

Chin San Han

Zijing Zeng

Habib Sami Karaki

James C Clements

Yindar Chuo

Wegene H Tadele

Daniel W Labove

Joseph R Lee

Craig C D'souza

Esther Chen

Kuo Jen Huang

Wanfeng Huang

Fred Y Chou

Chia-Hsien Lin

Hongling Chen

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.

Temperature sensing systems and methods including multiple temperature sensors

A sleep monitor includes a layered sensor that includes at least one substrate layer that includes multiple laterally adjacent substrates. The substrate layer may be formed by interdigitating fingers of a first sheet with fingers of a second sheet. Combining multiple substrates in a single layer of a layered sensor may allow multiple materials and/or sensing mechanisms to be combined together in a single layer.

Layered sensor having multiple laterally adjacent substrates in a single layer

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Sunnyvale, CA, United States of America

Ali M Amin