Error Detection and Mitigation in Video Channels

摘要

A system for detecting and mitigating bit errors in transmitted media is described herein. A source device encodes a frame of video, and generates an error code representative of a portion of the encoded frame of video. The portion of encoded frame and the error code are provided to a sink device via a communication channel, such as an HDMI or MHL3 channel. A second error code is generated by the sink device based on the portion of encoded frame, and the error code and second error code are compared to determine if the portion of encoded frame includes an error. If no error is detected, the portion of encoded frame is decoded and outputted. If an error is detected, the portion is replaced with frame data based on at least one other portion of encoded frame to produce a mitigated frame, and the mitigated frame is outputted.

主权项

1. A method comprising:
encoding, by the source device, a frame of video; generating, by the source device, an error code representative of a portion of the encoded frame; providing, by the source device to a sink device, the portion of the encoded frame and the error code via a communication channel; generating, by the sink device, a second error code based on the provided portion of the encoded frame; determining if the provided portion of the encoded frame includes an error based on a comparison of the error code and the second error code; responsive to a determination that the portion of the encoded frame does not include an error, decoding the portion of the encoded frame; and responsive to a determination that the portion of the encoded frame does include an error, replacing the portion of the encoded frame based on at least one other portion of the encoded frame.