Patent ID: 6937553
Filing Date: 2005-08-30
Classification: G11B,H04N

Abstract:
1. A recording apparatus for recording a duplicate of a product onto a recording medium, the product being a copyrighted digital product having a copy attribute embedded as a watermark thereon, comprising: an acquiring unit operable to acquire the copy attribute embedded on the product; a changing unit operable to change the acquired copy attribute into a copy attribute showing no more copy when the acquired copy attribute shows one generation copy; a reading unit operable to read from the recording medium at least a part of medium ID information recorded on the recording medium in an unalterable state; and a recording unit operable to record onto the recording medium the duplicate that has both the copy attribute showing no more copy and the read part of medium ID information embedded as a watermark thereon, wherein the read part of medium ID information is embedded as part of the watermark if the copy attribute is changed from one generation copy to no more copy.