Audio encryption in a media playback system
US12279008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2022 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Sep 26, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A first playback device is configured to obtain audio content from a cloud-based media service, the audio content encrypted according to a first encryption scheme. The first playback device is configured to communicate with a cloud-based license service to obtain information for decrypting the audio content and use the obtained information to decrypt the audio content. The first playback device is also configured to re-encrypt the decrypted audio content in accordance with a second encryption scheme and transmit the re-encrypted audio content to at least a second playback device that is grouped with the first playback device for synchronous audio playback. The first playback device is also configured to play back the audio content in synchrony with playback of the audio content by the second playback device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.