Patent ID: 8605599
Filing Date: 2013-12-10
Classification: G10L,H04H,H04N

Abstract:
1. A method of restoring an Advanced Audio Coding (AAC) stream from an asynchronous audio Packetized Elementary Stream (PES) stream, the method comprising the steps of: detecting, by an AAC stream restorer, at least one corrupted PES packet among PES packets of the PES stream; and restoring, by the AAC stream restorer, the AAC stream by replacing at least one lost Audio Data Transport Stream (ADTS) frame within the at least one corrupted PES packet with corresponding predetermined substitute audio data, which is one of mute audio data, white noise audio data and normal audio data based on audio data of at least one normal PES packet adjacent to the at least one corrupted PES packet, wherein, if a number of lost ADTS frames is greater than a predetermined value, the lost ADTS frames are replaced with predetermined one of the mute audio data and the white noise audio data, wherein, if the number of the lost ADTS frames is equal to or less than the predetermined value, the lost ADTS frames are replaced with the normal audio data, and wherein the number of the lost ADTS frames is based on a time stamp included in the at least one normal PES packet.