Real-time media content synchronization and transmission in packet network apparatus and method
US6778493B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2000 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Feb 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for transmitting and synchronizing real-time multimedia content includes a multimedia server for generating a multimedia packet; a packet-based communication network connected to the multimedia server for receiving multimedia packets therefrom; the network having multiple routers therein to route the multimedia packets to plural destinations; a mechanism for inserting total delay information (TDI) into the multimedia packets, wherein the TDI includes total end-to-end delay (TED) and cumulative network delay (CND); and plural multimedia receivers for receiving the multimedia packets having TDI therein, wherein each multimedia receiver includes a buffer, a sequencing mechanism, and a playing mechanism for playing retrieved, sequenced multimedia packets at time TED after the multimedia packet has been transmitted by the multimedia server. A method of transmitting and synchronizing real-time multimedia content includes loading multimedia audio/visual into plural multimedia packets; inserting total delay information (TDI) into at least one of the multimedia packets, wherein TDI includes total end-to-end delay (TED) and cumulative network delay (CND); transmitting the multimedia…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.