Microsoft Technology Licensing, LLC

Michael Earl Gruber

Yi He

Duane Martin Evans

Gene Robert Obie

Heng Huang

Thitipant Tantasirikorn

Thitipant Tantasrikorn

Accessory device power management techniques are described in which a power exchange state for a system including a host computing device, an accessory device, and an adapter is recognized. Power exchange states may be defined according to relative states of charge (RSOC) and connection status for the system components and mapped to power management control actions. Responsive to the recognition of a current power exchange state, corresponding power management control actions may be ascertained and applied to jointly manage power for the system. For instance, the host device may draw supplemental power from a power source associated with an accessory device (e.g., a battery or power adapter) or supply power for use by the accessory device according to different states. Power exchanges may also be managed in accordance with capabilities of the accessory device identified based on authentication of the accessory device.

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Carnation, WA, United States of America

Michael Earl Gruber