08935774 is referenced by 38 patents and cites 570 patents.

Accessory device authentication techniques are described. In one or more embodiments, connection of an accessory device to a host computing device is detected. Responsive to the detection, an authentication sequence may occur to verify an identity and/or capabilities of the accessory device. Upon successful authentication of the accessory device, the host device may authorize the accessory device for power exchange interactions with the host device. The host device may then draw supplemental power from a power source associated with the authorized accessory device, such as a battery or power adapter. The host device may also enable the accessory device to obtain and use power supplied by the host device in some scenarios. Power exchange between a host device and an authorized accessory may be managed in accordance with capabilities of the accessory device that are identified during authentication.

Title
Accessory device authentication
Application Number
13/471405
Publication Number
8935774 (B2)
Application Date
May 14, 2012
Publication Date
January 13, 2015
Inventor
Jose R Sousa
Redmond
WA, US
David Neff
Bothell
WA, US
Edward C Giaimo III
Bellevue
WA, US
Nathan C Sherman
Bellevue
WA, US
Robert D Young
Kirkland
WA, US
James Charles Marshall
Puyallup
WA, US
Gene Robert Obie
Clinton
WA, US
Jim Tom Belesiu
Mill Creek
WA, US
Agent
Micky Minhas
Glen Johnson
Jeremy Snodgrass
Assignee
Microsoft Corporation
WA, US
IPC
G06F 1/26
G06F 21/00
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