Adaptive stream switching with minimized switching delay
AssigneeInternational Business Machines Corporation
InventorsKrishna Ratakonda, Deepak Turaga, Peter Westerink
Life of this patent
Estimating the term…
Abstract
A system and method that selects among multiple encodings of the same content to adapt to available bandwidth and meet delay constraints by minimizing the switching lag is disclosed. The system and method include one buffer serving multiple data streams and a switching device. The switching device switches between the multiple data streams and discards data from the buffer that does not belong to a new stream to eliminate switching lag after a switching decision has been made.
Claims27
A system for selecting a stream with minimized switching lag, comprising:
- a switching device, which receives a plurality of streams having a same content;
- a single buffer to receive a selected stream from the switching device;
- a switching control device, which controls which of the plurality of streams, is selected to output based on a measure of buffer delay by evaluating buffer fullness and output bandwidth from the buffer.
A system that selects among multiple encodings of the same content to adapt to available bandwidth and meet delay constraints by minimizing the switching lag, comprising:
- one buffer serving multiple data streams;
- and
- a switching device, which switches between the multiple data streams and discards data from the buffer that does not belong to a new stream to eliminate switching lag after a switching decision has been made.
A method for reducing switching lag in a system that selects from among multiple encodings of the same content to adapt to available bandwidth and meet delay constraints, comprising the steps of:
- serving multiple data streams with one buffer;
- and
- switching between the multiple data streams and discarding data from the buffer that does not belong to a new stream to eliminate switching lag after a switching decision has been made.
Dependencies are inferred from the claim text.