INFORMATION RECORDING MEDIUM AND METHOD AND APPARATUS FOR RECORDING AND REPRODUCING INFORMATION USING THE SAME

摘要

The present invention provides an information recording and reproducing method of an information recording medium and an apparatus corresponding thereto. The information recording medium of the present invention includes radially wobbling groove portions having at least one of a substantially spiral-like track and concentric-shaped track. The information recording and reproducing method of this invention comprises the steps of generating a signal corresponding to the wobbling groove portions, and performing at least recording and reproducing information with use of an integer multiple clock of a frequency of the signal. Similarly, the present invention provides an apparatus for an information recording medium having radially wobbling groove portions which are provided with at least one of a substantially spiral-like track and concentric-shaped track. The apparatus of the present invention includes a wobble detecting circuit for generating a signal corresponding to the wobbling groove portions, and a clock generating means for generating an integer multiple clock of a frequency of the signal, wherein at least one of a record and reproduction is performed by using the clock.