Information signal recording medium of rotary type with overlapped tracks

Claim 1

An information signal recording medium of rotary type free of a guide groove on a flat surface with first successions of pits formed therein as respective concavities in response to a television composite video signal and with second successions of pits formed therein as respective concavities in response to a reference signal for tracking, said first successions of pits forming tracks of a specific pitch, each pit being formed with a width, equal to the width of a track, which is substantially greater than said pitch of the tracks, said second successions of pits being formed at positions substantially intermediate between the centerlines of adjacent tracks formed by the first successions of pits with partial overlap on the first successions of pits said medium being arranged for tracing by a reproducing stylus having a sliding contact whose width is greater than the width of the track of the first successions of pits.