Distribution of Closed Captioning From a Server to a Client Over a Home Network

摘要

A multimedia server distributes closed captioning over a network to a client device running a media player that does not support standardized closed captioning. The multimedia server receives a media stream including closed captioning that is encoded according to a closed captioning standard such as Consumer Electronics Association CEA-608-B or CEA 708-B, Advanced Television Systems Committee ATSC A/53 or the Society of Cable Telecommunications Engineers SCTE 20 and/or SCTE 21. The multimedia server transcodes the closed captioning into a format that is usable by the media player and transmits the transcoded closed captioning to the client device over the network so that the media player can render the closed captioning synchronously with programming content included in the media stream.