US Patent No. 9,083,640

ADAPTIVE BIT RATE SWITCHING


Patent No. 9,083,640
Issue Date July 14, 2015
Title Adaptive Bit Rate Switching
Inventorship Alexander V. Gutarin, Atherton, CA (US)
Baptiste Coudurier, Los Angeles, CA (US)
Assignee HULU, LLC, Santa Monica, CA (US)

Claim of US Patent No. 9,083,640

1. A method comprising:
determining, by a computing device, data describing a temporal variability of a bit rate of a first bitstream;
receiving, by the computing device, the first bitstream through a communication channel;
determining, by the computing device, a throughput for the communication channel;
comparing, by the computing device, the throughput of the communication channel with the data describing the temporal variability
of the bit rate of the first bitstream to determine a variance of the first bitstream from the throughput for the communication
channel for a portion of a media program not already received;

determining, by the computing device, an amount of data currently buffered in a buffer for the media program; and
comparing, by the computing device, the amount of data currently buffered to the variance for the portion to determine whether
to switch to receiving a second bitstream, wherein the second bitstream has a different bit rate from the first bitstream.