Method of manufacturing master disc, method of manufacturing recording medium, program, and recording medium
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United States of America Patent
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Nov 11, 2014
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app pub date -
Nov 7, 2011
filing date -
Nov 17, 2010
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Abstract
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.
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