Patent ID: 7088670

Claim:
An information recording carrier having minute pattern including plural grooves or lands formed to be substantially in parallel and adjacent each other, comprising: a supporting body having the minute pattern; a recording layer formed on the minute pattern formed on the supporting body; and a light transmission layer formed on the recording layer, wherein when a pitch of each groove or land is P, a wavelength of a laser beam is λ and a numerical aperture of an objective lens is NA, the minute pattern is formed under a relation of P<λ/NA, wherein the plural grooves or lands have at least a wobbling region and data is recorded wobblingly in the wobbling region by frequency shift modulations, wherein digital recording using the frequency shift modulation is carried out by frequency shift modulation in which with a predetermined frequency having either of 1–100 waves as a channel bit, the frequency is changed over for each channel bit, and wherein a phase of a high frequency portion and a phase of a low frequency portion are continuous at a border between the high frequency portion and the low frequency portion composing the frequency shift modulation.