公开(公告)号：US11495240B1

公开(公告)日：2022-11-08

申请号：US16519366

申请日：2019-07-23

Applicant: Amazon Technologies, Inc.

Inventor： Sebastian Pierce-Durance ,  Kenneth Edward Cecka ,  Adam Stevens ,  Sanjay Devireddy ,  Po-Chen Paul Yang ,  Naveen Kumar Devaraj ,  Federico Dan Rozenberg ,  Pete Baldridge ,  Rajiv Jain ,  Pranov Rai ,  Todd Greenwalt ,  Yusuf Goren

IPC: G06F3/16 ,  H04L9/08 ,  H04L9/40 ,  G10L19/22 ,  G10L19/002

Abstract: A device-management system performs processing, such as audio processing, in an instance of a virtual machine corresponding to a functionally limited (local) device. To register the local device, the device-management system receives a registration request that includes device information, encryption data, and an indication of an associated user account. The device-management system then sends this registration data to a service-provider system, which returns a shared encryption key. The device-management system and the local device may use this shared encryption key to securely communicate. The device-management system may de-allocate the instance upon detecting a period of inactivity of the local device and may re-allocate the instance when new activity is detected. The device-management system may further determine when and if audio data to be sent to the local device is encoded using a codec not implemented by the local device. Upon this determination, the device-management system may transcode the audio data such that is encoded using a known codec.

公开(公告)号：US10854186B1

公开(公告)日：2020-12-01

申请号：US16518634

申请日：2019-07-22

Applicant: Amazon Technologies, Inc.

Inventor： Sanjay Devireddy ,  Kenneth Edward Cecka ,  Adam Stevens ,  Sebastian Pierce-Durance ,  Naveen Kumar Devaraj ,  Po-Chen Paul Yang ,  Federico Dan Rozenberg ,  Pete Baldridge ,  Pranov Rai ,  Todd Greenwalt ,  Yusuf Goren ,  Rajiv Jain

IPC: G10K11/178 ,  H04L29/08 ,  G06F3/16 ,  G10L15/26

Abstract: A device-management system performs audio processing, such as acoustic echo cancellation or beamforming, in a computing-resource allocation corresponding to a functionally limited device. The device-management system may be a locally-connected network device that is in communication with one or more user devices; the device-management system may also or instead be a remote device that communicates with the user devices using the locally-connected network device. The device-management system may receive audio data from one or more microphones of one or more user devices. To perform acoustic echo cancellation, the device-management system may receive and process time data corresponding to a time of output of audio by the user device.