Method of manufacturing master disc, method of manufacturing recording medium, program, and recording medium

摘要

Information unique on a group basis is allowed to be efficiently added to a recording medium in which read-only contents data is recorded. Master data (cutting master) having a data structure in which data to be replaced is managed by a file system as data to be arranged in a specific folder or a specific file is produced by authoring. In manufacturing of a recording medium master disc through premastering and mastering using the master data, replacement data unique to each group is prepared, and the data to be replaced is replaced with the replacement data to perform the mastering (master disc exposure). Then, a stamper is produced from the produced master disc, and recording media is mass-produced by using the stamper. In other words, the replacement data are changed on the group basis to allow the recording media in which the replacement data (such as GP1 and GP2) unique to each group is recorded as read-only data to be manufactured, as recording media containing the same content.

主权项

1. A method of manufacturing a recording medium master disc, the method comprising:
performing preprocessing, for master data having a data structure in which contents data and data to be replaced are managed by a file system, by confirming the data to be replaced based on the file system and by preparing different groups of replacement data to replace the data to be replaced prior to exposure of the recording medium master disc, each of the different groups of replacement data being recordable on a recording medium, different from the recording medium master disc, along with the contents data; performing exposure of the recording medium master disc, based on the master data in which the data to be replaced is replaced with one of the different groups of replacement data; and performing development on the recording medium master disc subjected to the exposure to produce the recording medium master disc on which a concavo-convex pattern corresponding to the exposure is formed.