公开(公告)号：WO1980001328A1

公开(公告)日：1980-06-26

申请号：PCT/US1979001124

申请日：1979-12-18

Applicant: NCR CORP

Inventor： NCR CORP ,  HUI P

IPC: G11C13/04

CPC classification number: G11B7/0953 ,  G11B7/00736 ,  G11B27/034 ,  G11B27/22 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/218

Abstract: A method of recording data on an optical disc (10) having already recorded thereon one or more bands or segments of data each comprising a plurality of tracks and having a portion for producing an end-of-band signal indicative of the last recorded track the respective band. After sensing the end-of-band signal of the last recorded band, a relative radial movement is brought about between a recording means and the disc (10) by a distance corresponding to a predetermined number of tracks to produce a gap (18) between the last recorded band and the next band to be recorded and recording of the next band is then commenced. The distance is determined experimentally with a view to compensating for the eccentricity errors likely to be encountered in practice when recording on an optical disc (10) at a predetermined density.