Data output method, recording method and apparatus, reproduction method and apparatus, data transmission method and reception method

摘要

A data outputting method, comprising the steps of converting input data into sector unit data that starts with a start code and a header preceded by the start code, the header being composed of two bits at least one of which is a bit that represents an encryption control; when the converted data is to be encrypted, setting at least one of the two bits preceded by the start code to a state that represents that the data has been encrypted; encrypting the converted data; and encoding the encrypted data and outputting the encoded data.