Method and apparatus for providing distributed clip-list management
US6694379B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1999 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Apr 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/440263
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing distributed clip-list management. In an embodiment, an application maintains a local clip-list that identifies those portions of a remote frame buffer that are unambiguously associated with the given application, as well as those portions of the remote frame buffer which are disputed between the given application and one or more other applications. Applications may enforce a dispute policy with respect to writing image data to disputed regions of the frame buffer. Applications are able to write to the frame buffer asynchronously, without the use of a frame buffer lock. A clip manager maintains a global clip-list, and responds to messages from the applications by updating the global clip-list and informing those other applications of relevant changes to their own respective local clip-lists. The portions of an application's clip-list that have been previously claimed by other applications and which have not been acknowledged as lost by the other applications are referred to as disputed regions. Each application is kept informed about its current clip-list and any disputed regions within its current clip-list. The clip manager may be implemented a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.