EP 0783823 A4 19981202 - MEASURING AND REGULATING SYNCHRONIZATION OF MERGED VIDEO AND AUDIO DATA
Title (en)
MEASURING AND REGULATING SYNCHRONIZATION OF MERGED VIDEO AND AUDIO DATA
Title (de)
SYNCHRONISATIONSMESSUNG UND -REGELUNG VON GEMULTIPLEXTEN VIDEO- UND AUDIODATEN
Title (fr)
MESURE ET REGULATION DE LA SYNCHRONISATION DE DONNEES VIDEO ET AUDIO FUSIONNEES
Publication
Application
Priority
US 9409565 W 19940829
Abstract (en)
[origin: WO9607274A1] This invention concerns real-time assembly of a compressed audio-visual system data stream (22) so the audio and video data may be subsequently presented in synchronism. Assembly of a system data stream (22) in accordance with present invention interleaves packets of data selected from a compressed audio bitstream (16) with packets of data selected from a compressed video bitstream (18). If frames of video data being assembled into the system data stream (22) advance too far ahead of the audio data being assembled into the system data stream (22), then all the data for a single frame of the video signal is omitted from the system data stream (22). Conversely, if frames of video data being assembled into the system data stream (22) lag too far behind the audio data being assembled into the system data stream (22), then a second copy of all the data for a single frame of the video signal is assembled into the system data stream (22).
IPC 1-7
IPC 8 full level
H04N 7/26 (2006.01); G09G 5/00 (2006.01); G10L 13/00 (2006.01); G11B 20/10 (2006.01); H03M 7/30 (2006.01); H04N 7/04 (2006.01); H04N 7/045 (2006.01); H04N 7/52 (2011.01)
CPC (source: EP US)
H04N 21/4305 (2013.01 - EP); H04N 21/43072 (2020.08 - EP US); H04N 21/4341 (2013.01 - EP)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9607274A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 9607274 A1 19960307; AU 8009894 A 19960322; EP 0783823 A1 19970716; EP 0783823 A4 19981202; JP H10507042 A 19980707
DOCDB simple family (application)
US 9409565 W 19940829; AU 8009894 A 19940829; EP 94931269 A 19940829; JP 50867896 A 19940829