Content synchronization system, content-synchronization control device, and content playback device
US9412415B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2012 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Sep 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When long polling is employed under HTTP, a content-synchronization control device can control each content playback device so that content control is synchronized in multiple content playback devices. When receiving an inquiry from a content playback device 90, the response control means 84 waits transmission of an inquiry response in reply to the inquiry for a certain period of time since reception of the inquiry, and when the waiting state of the transmission of an inquiry response is cancelled, the waiting state of transmission of all the inquiry responses are cancelled. After the reception of the request information, the response control means 84 cancels the waiting state of the transmission of each inquiry response when a condition that the transmission of each inquiry response to each content playback device is kept waiting is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.