Method and system for application broadcast

摘要

Methods and apparatuses are described for application broadcasting. For one embodiment, pixel data being broadcast from a moderator to one or more participants is divided into tiles. Display data is generated for each tile. Each display data segment (segment) contains the pixel data for the tile, and also contains a tile identifier. The segments are periodically evaluated. If the pixel data has changed, the segment is replaced with the most recent segment corresponding to that tile. A time indicator is also included within each segment for each tile indicating the time at which the segment was updated. A participant DPS requests data from the server and provides the time indicator for the last segment it received. The server then transmits the current segment for each tile that has been updated subsequently. This allows presentation at the participant's DPS of the most current version of the moderator's display screen.

主权项

1. A method, comprising:
transmitting display data to a participant digital processing system, the display data comprising a plurality of tiles, each tile representing a segment of the display data, each display data segment comprising pixel data that represents a portion of a plurality of pixels of a display screen of a moderator digital processing system; when any of the pixels within any of the tiles has changed, using new pixel data for the tiles that have changed to create a new display data segment; replacing the display data segment for the tiles that have changed with the new display data segment; and storing the new display data segment for the tiles that have changed while discarding the previous display data segment to prevent image buffers from being created for a participant.