Adaptive video delivery

Details Adaptive video delivery Adaptive video delivery

2011-07-05

2011-07-05

Nguyen, Thuong T (Department: 2452)

Electrical computers and digital processing systems: multicomput

Computer-to-computer protocol implementing

Computer-to-computer data streaming

C709S235000, C709S233000, C370S331000, C375S240160, C375S240010, C725S001000, C725S039000, C725S050000, C725S091000

Reexamination Certificate

active

07975060

ABSTRACT:
A video server for transmitting video across a network to a plurality of users includes a coder (112) which operates in response to call requests or instructions received across the network (102) from individual clients (104, 106). The server maintains in memory a series of user status records (116), one for each of the users. Each record includes, or refers to, a copy of a previous frame sent to the respective user. When the coder (112) receives a call request, it uses the previously-sent frame for that user to optimise coding the current frame that is to be sent, received from a frame grabber (110). The invention avoids the difficulties of video broadcasting while still requiring only a single instance of a video coder.

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