Patent ID: 6930969

Claim:
An optical recording medium capable of optically recording record information, comprising: a first region formed with continuous groove tracks thereon to record the record information; and a second region formed with discontinuous embossed pit rows thereon in accordance with predetermined data, wherein the embossed pit rows prevent reproducing data overwritten on the second region, a level of a radial push-pull signal of the second region is not smaller than 80% of a level of a radial push-pull signal of the first region, and wherein the groove tracks and the embossed pit rows substantially satisfy the following mathematical equation Duty=0.04( Ed−λ/ 8 n ) 2 +(−0.07 Gd 2 +6 Gd− 35.6) where Duty [%] is an average duty of the embossed pit rows, Ed [nm] is a depth of the embossed pit rows, λ [nm] is a wavelength of a light beam, and n is a refractive index of a substrate of the optical recording medium, and Gd [nm] is a depth of the groove track.