High Areal Density Heated Dot Magnetic Recording Systems with Double-layered Bit Patterned Media

An efficient signal processing scheme is proposed for the heated-dot magnetic recording (HDMR) system with double-layered bit-patterned media (BPM). This scheme assumes to be applicable to a HDMR system with total areal density of up to 5.0 Tdpsi. It is cleared that the error rate performance of this HDMR system with double-layered BPM shows significant improvement over the performance of the HDMR system with single-layered BPM by computer simulation.