Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2008002000 - PROCÉDÉ POUR TRANSFORMER DES CONTENUS DE DMB TERRESTRE ET PASSERELLE UTILISANT CE PROCÉDÉ

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Claims
[1] A gateway for transforming a terrestrial digital multimedia broadcasting (DMB) contents, comprising:
an ensemble transport interface (ETI) demultiplexing means for dividing the
terrestrial DMB contents having ETI frame format into a fast information
channel (FIC) and a main service channel (MSC);
a session description protocol (SDP) packet processing means for converting the FIC into a SDP packet;
a transmission control protocol/Internet protocol (TCP/IP) packet generating
means for generating a TCP/IP packet based on the SDP packet;
a real-time transport protocol (RTP) packet processing means for converting the MSC into a first RTP packet;
a user datagram protocol/Internet protocol (UDP/IP) packet generating means for generating a UDP/IP packet based on the RTP packet; and
an IP output means for transmitting the TCP/IP packet and the UDP/IP packet
through an IP network.
[2] The gateway as recited in the claim 1, wherein the RTP packet processing means includes:
an MSC demultiplexing block for demultiplexing the MSC into a digital audio
broadcasting (DAB) audio stream, a DAB data stream and a multimedia stream; an outer decoding block for performing outer decoding of the multimedia stream to thereby generate outer-decoded multimedia stream; and
an RTP packet processing block for forming a second RTP packet based on the DAB audio stream, the DAB data stream and the outer-decoded multimedia
stream.
[3] The gateway as recited in the claim 2, wherein the RTP packet processing block includes:
a multimedia stream analyzing and demultiplexing unit for demultiplexing the
outer-decoded multimedia stream into a video transport steam (TS) and an audio TS by analyzing the outer-decoded multimedia stream;
an elementary stream (ES) generating unit for receiving the video TS and the
audio TS, and generating a video ES and an audio ES, respectively; and
an RTP packet processing unit for forming a third RTP packet based on the DAB audio stream and the DAB data stream from the MSC demultiplexing block and the video ES and the audio ES from the ES generating unit.
[4] The gateway as recited in the claim 1, wherein the SDP packet processing means forms the SDP packet based on information included in the FIC and additional session information.
[5] The gateway as recited in the claim 1, wherein the RTP packet processing means forms an RTP packet having the same size as the terrestrial DMB contents, and decides a payload type of the RTP packet as the terrestrial DMB contents.
[6] A method for transforming a terrestrial digital multimedia broadcasting (DMB) contents, comprising the steps of:
a) demultiplexing the terrestrial DMB contents having ensemble transport
interface (ETI) frame format into a fast information channel (FIC) and a main
service channel (MSC);
b) converting the FIC into a session description protocol (SDP) packet and
generating a transmission control protocol/Internet protocol (TCP/IP) packet
based on the SDP packet;
c) converting the MSC into an RTP packet and generating a UDP/IP packet
based on the RTP packet; and
d) transmitting the TCP/IP packet and the UDP/IP packet through an IP network. [7] The method as recited in the claim 6, wherein the SDP packet is formed based on information included in the FIC and additional session information.
[8] The method as recited in the claim 6, wherein the step c) includes the steps of:
cl) demultiplexing the MSC into a DAB audio stream, a DAB data stream and a multimedia stream;
c2) performing outer decoding of the multimedia stream;
c3) forming a first RTP packet based on the DAB audio stream, the DAB data
stream and the outer-decoded multimedia stream; and
c4) generating an UDP/IP packet based on the RTP packet.
[9] The method as recited in the claim 8, wherein the step c3) includes the steps of: c3-l) demultiplexing the outer-decoded multimedia stream into a video TS and
an audio TS by analyzing the outer-decoded multimedia stream;
c3-2) generating a video ES and the audio ES by using the video TS and the
audio TS, respectively; and
c3-3) forming a second RTP packet based on the DAB audio stream, the DAB
data stream, the video ES and the audio ES.
[10] The method as recited in the claim 6, wherein the RTP packet has the same size as the terrestrial DMB contents, and a payload type of the RTP packet is the
terrestrial DMB contents type.
[11] A terrestrial digital multimedia broadcasting (DMB) contents service system,
comprising:
an encoding means for encoding a DAB audio source, a DAB data source and a multimedia source;

an ensemble multiplexing means for multiplexing the encoded DAB audio, the encoded DAB data and the encoded multimedia into a terrestrial DMB contents based on a EΗ standard;
a gateway for transforming the terrestrial DMB contents into packets having a IP format to access IP networks or transporting the terrestrial DMB contents to a coded orthogonal frequency division multiplexing (COFDM) encoding means to access a terrestrial DMB private network; and
the COFDM encoding means for encoding the terrestrial DMB contents based on a COFDM and transmitting the encoded terrestrial DMB contents,
wherein the gateway demultiplexes the terrestrial DMB contents based on the

ETI frame format into a FIC and a MSC, converts the FIC into a packet having the IP format based on a SDP and a TCP/IP, and converts the MSC into a packet having the IP format based on an RTP and a UDP/IP.