Patent ID: 6542518
Filing Date: 2003-04-01
Classification: H04N

Abstract:
A transport stream generating apparatus for generating a transport stream for transmitting source video data and source audio data, comprising:encoding means for encoding source video data and source audio data corresponding to an assigned video encoding rate and an assigned audio encoding rate so as to generate an encoded video stream and an encoded audio stream, respectively; multiplexing means for multiplexing the encoded video stream and the encoded audio stream in each of at least one predetermined period; transport stream generating means for generating the transport stream with the multiplexed stream of the video stream and the audio stream; controlling means for controlling said encoding means, said multiplexing means, and said transport stream generating means so that each of a data amount of the encoded video stream multiplexed in a predetermined period and a data amount of the encoded audio stream multiplexed in the predetermined period is near constant for all predetermined periods; the predetermined period being one video frame period; said controlling means comprising means for generating a schedule corresponding to the assigned video encoding rate and the assigned audio encoding rate so as to multiplex the encoded video stream and the encoded audio stream; said controlling means controlling said multiplexing means and said transport stream generating means so as to perform a multiplexing process corresponding to the schedule for all predetermined periods; and said controlling means calculating the data amount of the encoded video stream transmitted in one video frame period corresponding to the assigned video encoding rate, calculating the data amount of the encoded audio stream transmitted in one audio frame period corresponding to the assigned audio encoding rate, and generating the schedule corresponding to the data amount of the calculated encoded video stream and the data amount of the calculated audio stream.