Patent ID: 6233251
Filing Date: 2001-05-15
Classification: H04N

Abstract:
A method for multiplexing and transmitting variable-length data and fixed-length data in multiplex frames, wherein the variable-length data is data on which retransmission has been employed and to which error correction by retransmission control has been applied, and the fixed-length data is data on which retransmission has not been employed and to which error correction by retransmission control has not been applied, said method comprising:forming multiplex frames such that each multiplex frame has a fixed length, and forming a variable-length data link frame in each multiplex frame such that the data link frame has a frame length based on the length of the fixed-length data, and storing the variable length data in the data link frame;transmitting the multiplex frames in a transmission stream of the multiplex frames; andbefore said transmitting, storing each data link frame such that each data link frame is completed in one multiplex frame so that the data link frames can be transmitted at a timing kept in synchronization, for each multiplex frame, with the transmission stream of the multiplex frames.