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公开(公告)号：US20220375499A1
公开(公告)日：2022-11-24
申请号：US17881301
申请日：2022-08-04
Inventor： Toshiyuki FUKUSHIMA , Tokuo NAKATANI , Nobuyuki ENOKI , Kazuhiro MOCHINAGA , Masaya YAMAMOTO
Abstract: A content recording apparatus includes an obtaining unit which obtains a content having a variable-length packet structure, an encrypter which generates encrypted data by encrypting the content, and a recorder which records the encrypted data in a block unit having a fixed length in a recording medium. The encrypted data includes an invalidated region unnecessary for reproduction of the content. The recorder records a size of the invalidated region in the recording medium.
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