OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING AND ERASING METHOD, AND TRACKING ERROR SIGNAL DETECTING DEVICE

摘要

PURPOSE:To provide an optical information recording medium which is high in linear recording density as compared with the conventional medium and, at the same time, has a continuous spiral track which is double in track density. CONSTITUTION:Bit recording cells formed of recessing and projecting pits are arranged at a pitch which is equal to or smaller than the diffraction limit and identifiable clock marks 2 are provided at every prescribed number of pits. In addition, wobble marks having the positive and negative polarities are alternately arranged so that an odd number of wobble marks can be arranged at every track period.