Patent ID: 9113141
Filing Date: 2015-08-18
Classification: H04N

Abstract:
1. A method of adaptively changing encoding bit rate at a transmitting device comprising: querying capacity of a wireless WiFi channel that makes use of one or more of versions of IEEE 802.11; wherein the transmitting device is operable to transmit to a receiver in a wireless display (WiDi) system; determining whether to change a current encoding bit rate based on the capacity of the wireless WiFi channel; wherein the determining is based on a MaxRateThreshold which is an upperbound of a video bit rate and a MinRateThreshold which is a lower-bound of the video bit rate; wherein the video bit rate for encoding is adapted to gradually increase if the difference between channel capacity and current video bit rate is larger than a predetermined threshold value; wherein the video bit rate for encoding is adapted to decrease to a value below channel capacity if the current and last capacity value are less than the current and last video bit rate; and adjusting the current encoding bit rate based on the determining.