Multimedia-data transmission system, apparatus and method
US7587735B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2001 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Aug 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a system for transmitting multimedia data including video data, audio data, graphic data, text data and the like via a network, sets of media data are stored in a plurality of servers in a distributed state. When requested multimedia data is assigned from a transmitter, necessary sets of data from among media data stored in the servers in a distributed state are acquired by corresponding receivers in accordance with the assignment. A synchronization control unit and a multiplexer multiplex the acquired media data based on time stamps of the data, and transmit multimedia data after the multiplexing to a client which has assigned the multimedia data. According to such a configuration, distributed multimedia servers can be constructed without taking into consideration of influence by the effective rates of transmission channels from the respective servers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.