Dynamic hierarchical network resource scheduling for continuous media
US6041354A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1995 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Sep 8, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2209/485
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method is provided that supports continuous media for conventional networked workstations and PC's. Described are user-level mechanisms and policies designed to give good, efficient multimedia service under the mild assumption that the operating system provides a preemptive real-time scheduling class that can be used to give CPU cycles to the multimedia processes in preference to other processes that are not time sensitive. There are no modifications to the operating system kernel and isochronous networks are not required. It suffices for an application to state that it wants to play a particular stream of a type known to the server (e.g. a file containing MPEG-1 video 320.times.240 pixels, 8-bit color, 30 frames per second), or for the application to specify a frame rate and an index describing the offset of each frame in a file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.