MAGNETIC RECORDING MEDIUM, MASTER INFORMATION MAGNETIC RECORDING METHOD, MASTER INFORMATION CARRIER, MAGNETIC RECORDING AND REPRODUCING DEVICE, AND HARD DISK DRIVE

摘要

PROBLEM TO BE SOLVED: To realize recording/reproduction free from a careless lack of a signal and having high reliability even in the recording/reproduction of the information signal mainly composed of an animation. SOLUTION: In the magnetic recording medium on which an information signal pattern (preformat pattern) is recorded, a recording track on which the information signal pattern is recorded is formed in the state that a concentric circle shaped track 2 and a spiral track 1 which are separated from each other are mixed.