Digital signal recording on a magnetic recording medium having a non-magnetic base and magnetic metal film of certain characteristics

摘要

A method for magnetically recording digital video signals includes the steps of: converting input digital video signals into data segmented into blocks each composed of a plurality of pixel data; compression-coding the blocks of pixel data block-by-block; converting the compression-coded data into channel-encoded data; and supplying the channel-encoded data to magnetic heads on a rotary drum for recording by such heads on a magnetic recording medium constituted by a nonmagnetic base having thereon a magnetic layer of at least one thin magnetic metal film which has an energy product of at least 75 G.cm.Oe, with the surface roughness of said magnetic recording medium being at most 0.003 mu m in center line average height Ra, and with the surface roughness of said magnetic recording medium being at most 0.04 mu m in ten point average height Rz.