Patent ID: 6856756

Claim:
A digital data transmitting apparatus comprising: a reproducing device that classifies digital data in the form of serial packet data comprising picture data, audio data and other data that are read at a variable rate from a digital data medium and demodulated into at least picture data, audio data and other data, and buffers and decodes each of the picture data, audio data and other data, so as to generate a reproduction signal; an MPEG transport stream (MPEG-TS) generating device that generates an MPEG transport stream based on said digital data according to MPEG (Moving Picture Expert Group), wherein said MPEG-TS generating device packets control information as private data, said control information comprising data for matching a reproduction state of said reproducing device with a reproduction state of a receiver-side apparatus that receives digital transmission data; and a digital interface device that converts the MPEG transport stream generated by said MPEG-TS generating device into the digital transmission data, and transmits the digital transmission data at a predetermined transmission rate.