Invention Grant
US08009832B2 Method of managing copy protection information of a recording medium, recording medium with copy protection information for contents recorded thereon, and reproducing method for the recording medium
有权
管理记录介质的复制保护信息的方法，具有记录在其上的内容的复制保护信息的记录介质，以及记录介质的再现方法
- Patent Title: Method of managing copy protection information of a recording medium, recording medium with copy protection information for contents recorded thereon, and reproducing method for the recording medium
- Patent Title (中): 管理记录介质的复制保护信息的方法，具有记录在其上的内容的复制保护信息的记录介质，以及记录介质的再现方法
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Application No.: US11357059Application Date: 2006-02-21
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Publication No.: US08009832B2Publication Date: 2011-08-30
- Inventor: Sang Woon Suh , Jin Yong Kim
- Applicant: Sang Woon Suh , Jin Yong Kim
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR10-2003-0004930 20030124
- Main IPC: G06F12/14
- IPC: G06F12/14 ; G11B5/86 ; G11B7/24
Abstract:
The present invention relates to a method of managing CPI (Copy Protection Information) for preventing unauthorized copy of encrypted content recorded on a high-density recording medium such as a BD-ROM (Blu-ray Disc ROM). In the present method, when main content data is recorded in encrypted manner, CPI that is necessary to decrypt the encrypted main content data is written in a predetermined PIC area and is also copied at least once in an area other than the PIC area.
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