Title:
ＲＴＰパケットを含むデータ・ストリームならびにそのようなデータ・ストリームをエンコード／デコードする方法および装置
Document Type and Number:
Japanese Patent JP5686506
Kind Code:
B2
Abstract:
In the case of packet loss during transmission over an error-prone transmission channel, some decoders may perform error concealment. In real-time systems, application decoders must handle the data loss alone and find out which data are missing. A special syntax within a packet-based framework is provided which is based on identifying and indicating the relationship between RTP packets and the application layer data they carry, before the packets are fed to the multi-layer application decoder. This helps the decoder to employ proper error concealment techniques in time, and prevents unnecessary processing in the decoder. A data stream comprises RTP packets containing application data of a multi-layer application, wherein an RTP packet (p2) contains two kinds of application layer information (NB f ,NB n ): one relating to the next RTP packet (p3), and one relating to the previous RTP packet (p1). In case of packet loss, the decoder can immediately determine the amount and type (VCLx) of missing data.
Inventors:
ユ ウェン ウー
ジ ボ チェン
ジ ジン シア
ジ ボ チェン
ジ ジン シア
Application Number:
JP2009174653A
Publication Date:
March 18, 2015
Filing Date:
July 27, 2009
Export Citation:
Assignee:
トムソン ライセンシングＴｈｏｍｓｏｎ Ｌｉｃｅｎｓｉｎｇ
International Classes:
H04L1/00; H04N19/89; H04L1/08; H04N7/173; H04N21/4425
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito