Patent ID: 6101165
Filing Date: 2000-08-08
Classification: G11B

Abstract:
A method of reproducing optically data recorded along concentric or spiral equidistant data tracks on a disk-shaped record medium comprising the steps of:scanning a recording surface of said record medium with light produced by a probe array having plural probes arranged in a two-dimensional manner such that the probes scan optically the recording surface of the record medium along scanning tracks to generate light whose intensity is modulated in accordance with the data recorded on the record medium, successive scanning tracks being separated from each other by a same distance which is not larger than a half of a pitch of the data tracks;detecting a change in light caused by the respective probes to derive electric signals;storing said electric signals in a storage device as a signal on a time domain;processing said electric signal to select valid data; andextracting desired data from the valid data.