High efficiency coding method, high-efficiency encoding device, coded data decoding method, coded data decoding apparatus, data transmission method, data transmission equipment, additional information adding method and additional information additional device

摘要

PROBLEM TO BE SOLVED: To enable provider providing a digital signal to provide a new service by discriminating reliably and easily which provider provides coded data such as musical data recorded on a recording medium. SOLUTION: An unused bit REM for coding which is the surplus portion of each frame, is calculated in high efficiency coding. When it is judged in Step S107 that the unused bit REM for the coding is not a 0 bit, additional target information is written in the detected unused bit for the coding in Step S108. Thus, the additional information is added to coded data by writing the additional information in the unused bit for the coding of the frame in which the unused bit for the coding is generated.