Patent ID: 6392973
Filing Date: 2002-05-21
Classification: G11B

Abstract:
A method of recording a digital signal representing digital data on to a recording medium by changing a position of each edge of each of a plurality of pits in accordance with the digital signal, the method being used in a recording and reproducing system comprising a recording apparatus for recording the digital signal onto the recording medium by changing the position of each edge of each of the plurality of pits in accordance with the digital signal, and a reproducing apparatus for reproducing the digital signal recorded on the recording medium from the recording medium, the method comprising the processes of:receiving the digital signal to be recorded; generating a predicted inter-symbol interference signal by predicting inter-symbol interference contained in a reproduced signal from the recording medium when a reproducing process is carried out with respect to the recording medium by the reproducing apparatus, on the basis of predetermined characteristics of a recording process in the recording apparatus, predetermined characteristics of the reproducing process, and the received digital signal; generating a compensated digital signal by subtracting the predicted inter-symbol interference signal from the received digital signal; and recording the compensated digital signal onto the recording medium by continuously changing the position of each edge of each of the plurality of pits in proportion to the compensated digital signal.