Patent ID: 8719860
Filing Date: 2014-05-06
Classification: H04N

Abstract:
1. An augmented broadcasting stream transmission device of generating an augmented broadcasting stream to transmit the augmented broadcasting stream to a receiving side in order to provide an augmented broadcasting service, the augmented broadcasting stream transmission device comprising: an image stream generating unit generating an image stream based on an image source of the augmented broadcasting service; a metadata stream generating unit generating metadata related to an augmented content of the augmented broadcasting service based on the image source to generate a metadata stream; and a re-multiplexing unit receiving the image stream and the metadata stream as inputs and multiplexing the image stream and the metadata stream to generate and transmit the augmented broadcasting stream, wherein the metadata stream generating unit calculates a sending time s in which metadata n corresponding to an image frame k of the image source are transmitted based on a presentation time t in which the image frame k is transmitted and generates the metadata stream so that the metadata n are transmitted in the sending time s; wherein the sending time s is calculated based on the presentation time t, a broadcasting arriving time required to transfer the image frame k to a receiving side through a broadcasting network, a network arriving time required to secure the augmented content in the receiving side through a communication network, and a traffic transfer time according to a type of augmented content; and wherein the sending time s is a value obtained by subtracting the sum of the broadcasting arriving time, the network arriving time, and the traffic transfer time from the presentation time t.