Patent ID: 7319645

Claim:
A recording apparatus for recording modulated data on a rewritable recording medium, the recording apparatus comprising: a data modulation section for modulating data in accordance with a prescribed modulation rule; a parameter value changing section for changing at least one parameter value of the prescribed modulation rule; and a recording section for recording the data modulated in accordance with the prescribed modulation rule on the recording medium, wherein the prescribed modulation rule is at least one of (a): a modulation rule that uses state modulation; or (b): a modulation rule that uses a digital sum value, and in the instance (a) where the prescribed modulation rule is a modulation rule that uses state modulation, the at least one parameter value is an initial value of a state; and in the instance (b) where the prescribed modulation rule is a modulation rule that uses a digital sum value, the at least one parameter value is the initial value or the target value of the digital sum value.