Data transmission system and method

摘要

A data transmission system is disclosed which is suitable for real-time data transmission.The data transmission system (1) comprises a data buffer (2) consisting of a real-time data buffer (3) in which real-time data is stored, and an ATM segmentation block (5) to segment a real-time data outputted from the data buffer (2) into cells each of a fixed length for transmission in an asynchronous transfer mode (ATM). The ATM segmentation block (5) consists of a real-time data transmission timing signal generating means (7) for generating transmission timing signals for the cells based on the arriving intervals of the input real-time data and a transmission VC selecting means (8) for segmenting a real-time data supplied from the date buffer 2 into cells and outputting to a physical layer device (6) the real-time data formed in the cells under the transmission timing signals generated by the cell transmission timing signal generating means (7).