Multi-Rate Sub-Band Coding of Audio and Video in an ATM Environment
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
The problem of sub-optimum use of transmission links in todays networks results in two main drawbacks: network congestion in case of node overload, and single class of service, based on the quality obtained at a fixed bit-rate. Considering the Asynchronous Transfer Mode (ATM) as a basis for the transfer technique of broadband networks, multi-rate sub-band coding allows to define a flexible architecture providing different classes of services corresponding to different levels of quality with an optimum use of the bandwidth for all types of audio and video signals. At the same time it solves the problem of network congestion.