ADAPTIVE MULTIPLEXING SYSTEM

摘要

PURPOSE:To quicken bit rate assignment to each channel and to improve the degree of freedom of assignment in response to the quantity of coded information production quantity when picture signals of plural channels are subject to inter-frame coding and time division muitiplex. CONSTITUTION:Data B1 or B4 representing quantity or increase/decrease of coded information quantity in coding sections 1-1-1-4 of plural channels is given to a control section 3 and the channel allocation to a sub frame part in a multiplexed data Dm is set accordingly. In response to the result of channel allocation, an adaptive multiplexer section 2 applies time division multiplex to coded data D1-D4 of each channel, codes and adds data E being the result of channel allocation to form the multiplex data Dm and the data are sent. A receiver side decodes the data E from the code in the multiplex data Dm to obtain an allocation timing of the coded data D1-D4 of each channel in the multiplex data Dm thereby demultiplexing and decoding each channel.