RECORDING MEDIUM, DATA TRANSMISSION METHOD AND APPARATUS, AND DATA REPRODUCTION METHOD AND APPARATUS

摘要

A data transmission apparatus for transmitting an original data has a converter for converting the original data to sequential data codes. The dat a code is formed by a combination of HIGH level binary codes and LOW level binary codes. The maximum length of continuous binary codes of one level, su ch as HIGH level, in the data codes is limited to Tmax, e.g., to 14T, in which T is a unit length representing one binary code, and the minimum length of continuous binary codes of one level, such as HIGH level, in the data codes is limited to Tmin, e.g., 3T. A generator generates a synchronization code. The synchronization code is formed by a combination of HIGH and LOW level binary codes. The synchronization code comprises an identifier having continuous binary codes of one level, such as HIGH level, with a predetermined length 1 6T which is 2T greater than Tmax. An inserter inserts the synchronization code intermittently in the sequential data codes.