Patent ID: RE41430

Claim:
An information data recording apparatus for recording information data on an information recording medium having pre-pits which are formed at periodic intervals having a period that is m, m being an integer, times as large as a unit period in accordance with pre-information recorded at an interval which deviates from said periodic intervals by an interval that is k, k being an integer, where k<m, times said unit period in accordance with recording positions, said apparatus comprising: a unit period signal generator which generates a periodic signal of said unit period; a memory for temporarily storing said information data in synchronism with said periodic signal from said unit period signal generator and supplying said information data in synchronism with a clock signal; a pre-pit signal reproducing circuit for detecting said pre-pits from said recording medium and generating a pre-pit signal; a phase-locked loop circuit for generating said clock signal which is phase-locked with a jitter component contained in said pre-pit signal; and a recording means for recording said information data supplied from said memory on said recording medium.