Title :
ATM network and VBR video source: data structure and statistical analysis of an implemented hybrid DCT broadcast video encoder
Author :
Vecchietti, G. ; Modena, M. ; Parladori, G.
Author_Institution :
Telettra SpA, Vimercate, Italy
Abstract :
The arrangement of data in a variable bit rate (VBR) video codec, making it suitable for the transmission over ATM (asynchronous transfer mode) networks, is addressed. Attention is focused on two aspects specifically belonging to the ATM environment: the impairment due to the loss of ATM data cells and the statistical analysis of a real VBR video source. A particular implementation of a hybrid DCT (discrete cosine transform) broadcast video codec, which adheres to the recent specifications proposed by the European Telecommunications Standards Institute, is addressed. In order to optimize the performance with respect to cell losses, a specific solution based on the concept of organizing data into video packets is explored. The statistical characteristics of the available VBR video source are investigated, using a real-time acquisition system
Keywords :
codecs; encoding; statistical analysis; time division multiplexing; transforms; video equipment; video signals; ATM network; asynchronous transfer mode; discrete cosine transform; hybrid DCT broadcast video encoder; real VBR video source; real-time acquisition system; statistical analysis; variable bit rate; video codec; video packets; Asynchronous transfer mode; Bit rate; Broadcasting; Data structures; Discrete cosine transforms; Multimedia communication; Performance loss; Statistical analysis; Telecommunication standards; Video codecs;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188351
