EP 1074091 A2 20010207 - METHOD AND APPARATUS FOR SUPPORTING A VIDEO PROTOCOL IN A NETWORK ENVIRONMENT
Title (en)
METHOD AND APPARATUS FOR SUPPORTING A VIDEO PROTOCOL IN A NETWORK ENVIRONMENT
Title (de)
VERFAHREN UND VORRICHTUNG ZUR UNTERSTÜTZUNG EINES VIDEOPROTOKOLLS IN EINER NETZWERKUMGEBUNG
Title (fr)
PROCEDE ET APPAREIL DE PRISE EN CHARGE D'UN PROTOCOLE VIDEO DANS UN ENVIRONNEMENT RESEAU
Publication
Application
Priority
- US 9908673 W 19990420
- US 6349298 A 19980420
Abstract (en)
[origin: WO9955013A2] A method and apparatus of supporting a video protocol in a network environment. In an embodiment of the invention, video processing and hardware requirements associated with a receiver are minimized by specifying a single video protocol for transmission of video data between transmitters and receivers on a network. The protocol specifies a color format that allows for high video quality and minimizes the complexity of the receiver. Transmitters are equipped with transformation mechanisms that provide for conversion of video data into the designated protocol as needed. Compression of the components of the color format is provided to reduce transmission bandwidth requirements. In one embodiment, aspects of the designated protocol compensate for problems associated with transmitting video data over a network. The designated protocol specifies a color format including a luminance value and two chrominance values. Quantized differential coding is applied to the luminance value and subsampling is performed on the chrominance values to reduce transmission bandwidth requirements. Upscaling of video data is performed at the receiver, whereas downscaling is performed at the transmitter. Various display sizes can thus be accommodated with efficient use of network bandwidth.
[origin: WO9955013A2] A method and apparatus of supporting a video protocol in a network environment. Video processing and hardware requirements associated with a receiver are minimized by specifying a single video protocol for transmission of video data between transmitters and receivers on a network. The protocol specifies a color format that allows for high video quality and minimizes the complexity of the receiver. Transmitters convert video data into the designated protocol as needed. The designated protocol specifies a color format including a luminance value and two chrominance values. Quantized differential coding is applied to the luminance value and subsampling is performed on the chrominance values to reduce transmission bandwidth requirements. Upscaling of video data is performed at the receiver, whereas downscaling is performed at the transmitter. Various display sizes can thus be accommodated with efficient use of network bandwidth.
IPC 1-7
IPC 8 full level
H04L 29/06 (2006.01); H04N 7/26 (2006.01); H04N 7/30 (2006.01); H04N 7/34 (2006.01); H04N 7/46 (2006.01); H04N 9/64 (2006.01); H04N 11/04 (2006.01); H04N 19/593 (2014.01); H04N 5/44 (2006.01); H04N 9/67 (2006.01)
CPC (source: EP)
H04L 69/08 (2013.01); H04N 9/641 (2013.01); H04N 11/042 (2013.01); H04N 19/126 (2014.11); H04N 19/186 (2014.11); H04N 19/40 (2014.11); H04N 19/59 (2014.11); H04N 19/593 (2014.11); H04N 21/234354 (2013.01); H04N 21/4143 (2013.01); H04N 21/440254 (2013.01); H04N 9/67 (2013.01); H04N 11/044 (2013.01); H04N 19/124 (2014.11); H04N 19/60 (2014.11); H04N 21/426 (2013.01); H04N 21/4788 (2013.01)
Citation (search report)
See references of WO 9955013A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9955013 A2 19991028; WO 9955013 A3 20000427; AU 3656799 A 19991108; AU 760841 B2 20030522; CA 2329426 A1 19991028; EP 1074091 A2 20010207; JP 2002512470 A 20020423
DOCDB simple family (application)
US 9908673 W 19990420; AU 3656799 A 19990420; CA 2329426 A 19990420; EP 99918718 A 19990420; JP 2000545259 A 19990420