Transmission announcement system and method for announcing upcoming data transmissions over a broadcast network
US6628625B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jul 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a broadcast system in which computer data and other content are delivered from multiple content servers to multiple clients at least partly over a broadcast network, a transmission announcement system announces upcoming broadcast transmissions and instructs the clients on how to receive the broadcast transmissions. Announcement servers (which may or may not be the same as the content servers which serve the data for the broadcast transmissions) generate announcements containing information specifying how associated upcoming transmissions are to be delivered over the broadcast network. The announcement server makes the announcements available to the clients over the broadcast network or over a secondary link other than the broadcast network. As possible examples of the secondary link, the announcement servers might send the announcements to a multicast address over a public network, such as the Internet, or post the announcements at a publicly accessible site on a data network, such as a Web site on the Internet. The clients receive the announcements via the broadcast network or the secondary link. The clients filter the announcements according to predetermined criteria, keeping …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.