Apple Inc.

Tristan R Hudson

Parin Patel

Manu Gulati

Darya Amin-Shahidi

Jay B Fletcher

Sanjay Pant

Denis G Chen

Talbott Mead Houk

Shingo Yoneoka

Fabien S Faure

Siarhei Meliukh

Nathan F Hanagami

Nikola Jovanovic

Floyd L Dankert

Di Zhao

Wenxun Huang

Alessandro Molari

Hartmut Sturm

Ludmil N Nikolov

Chi Kin Ho

Seyedeh Maryam Mortazavi Zanjani

Adriane S Niehaus

Matthew Thomas Metzler

Nicola Florio

Chad L Olson

John J Sullivan

Jonathan A Gordon

Eric M Innis

Michael S Weinstein

Matthew N Weege

Jonathan A Dutra

The present disclosure describes a system with a power management device, a wakeup circuit, a battery management device, and a connector. During a powered down mode of operation, the battery management device can provide, via the connector, a bias voltage to the wakeup circuit. In response to a wakeup switch being activated, the battery management device can provide a power supply (e.g., from a battery) to the power management device. Benefits of the wakeup circuit include (1) a reduction of battery consumption—and thus improving battery lifetime—when the electronic system is in a powered down mode of operation because the wakeup circuit has lower number of active components compared to other designs and (2) a non-complex wakeup circuit design because one or more existing connector interconnects between the power management device and the battery management device can be re-used during electronic system's powered down mode of operation.

Wakeup circuit

A software defined button includes a force sensor and a haptic output element. The button further includes an immutable logic core and a mutable logic core. The mutable logic core is configured to define one or more thresholds against which input received from the force sensor can be compared to determine whether a user input has been provided. The immutable logic core is configured to verify actual force input has been received when the mutable logic core signals that user input has been received. In response to receiving a verified force input, the haptic output element can be caused to be driven by one of the mutable or immutable logic cores to provide a haptic output to a user.

Secure integrated circuit for smart haptics

In an embodiment, a system includes a power management unit (PMU), a non-volatile memory, a volatile memory, and a processor. The PMU may be configured to generate a power supply voltage, change a state of a status signal responsive to an event, and reduce a voltage level of the power supply voltage responsive to a predetermined period of time elapsing from detecting the event. The system may be configured to transition from a first to a second operating mode responsive to the change of the state of the status signal, and cancel pending commands to the non-volatile memory responsive to the transition to the second operating mode. The non-volatile memory may be configured to complete active commands prior the predetermined period of time elapsing.

Method for preparing a system for a power loss

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San Jose, CA, United States of America

Tristan R Hudson