Content synchronization system, content-synchronization control device, and content playback device
US9118977B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Sep 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A content synchronization system can be provided with which, under HTTP, a content-synchronization control device can control each content playback device so that content control is synchronized in multiple content playback devices. Inquiry reception means 82 receives an inquiry for determining presence/absence of playback control command transmitted from each content playback device 90 to the content playback device. The waiting time determination means 83 determines a waiting time from when the content playback device of the source of transmission of inquiry receives an inquiry response to when it transmits a subsequent inquiry so that the reception time of the inquiry transmitted from each content playback device 90 is at the same time, on the basis of the reference of the reception cycle of the inquiry. The inquiry response transmission means 85 returns the inquiry response including the waiting time back to the content playback device. At this occasion, when the playback control command and the start time of the control are determined, the information thereof is also included in the inquiry response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.