Interleaved multiple multimedia stream for synchronized transmission over a computer network
US6449653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1997 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Mar 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/762
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The production of an interleaved multimedia stream for servers and client computers coupled to each other by a diverse computer network which includes local area networks (LANs) and/or wide area networks (WANs) such as the internet. Interleaved multimedia streams can include compressed video frames for display in a video window, accompanying compressed audio frames and annotation frames. In one embodiment, a producer captures separate video/audio frames and generates an interleaved multimedia file. In another embodiment, the interleaved file include annotation frames which provide either pointer(s) to the event(s) of interest or include displayable data embedded within the annotation stream. The interleaved file is then stored in the web server for subsequent retrieval by client computer(s) in a coordinated manner, so that the client computer(s) is able to synchronously display the video frames and displayable event(s) in a video window and event window(s), respectively. In some embodiments, the interleaved file includes packets with variable length fields, each of which are at least one numerical unit in length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.