Invention Grant
US08284512B2 Recording medium and apparatus for protecting copyrighted digital data
失效
用于保护受版权保护的数字数据的记录介质和设备
- Patent Title: Recording medium and apparatus for protecting copyrighted digital data
- Patent Title (中): 用于保护受版权保护的数字数据的记录介质和设备
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Application No.: US11889168Application Date: 2007-08-09
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Publication No.: US08284512B2Publication Date: 2012-10-09
- Inventor: Koichi Sugiyama , Etsurou Sakamoto
- Applicant: Koichi Sugiyama , Etsurou Sakamoto
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Priority: JP6-336503 19941222; JP7-019667 19950112
- Main IPC: G11B15/18
- IPC: G11B15/18

Abstract:
Copying, dubbing or reproducing copyrighted digital data can be inhibited or restricted to properly protect a copyright. AV data recorded on a pre-recorded tape is output from a reproducing unit of a first digital VCR with protective information indicating whether the copy of the AV data is inhibited or not. The protective information is input with the A/V data to a second digital VCR. Copy permission information of a blank tape loaded in the second digital VCR is discriminated and the second digital VCR records the AV data supplied from the first digital VCR based on the protective information and the copy permission information.
Public/Granted literature
- US20080089664A1 Recording medium and apparatus for protecting copyrighted digital data Public/Granted day:2008-04-17
Information query
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