发明名称 |
VIDEO INFORMATION RECORDING APPARATUS AND REPRODUCING APPARATUS |
摘要 |
A method for recording video information for controlling video information copy limit information when copying data recorded on a recording medium to another recording medium. By detecting copy limit information (CCI) or a watermark (WM) of an AV stream to be input, it is checked whether the conten t of the copy limit information or the watermark has been changed. Change poin t information of the copy limit information or the watermark and the content o f the copy limit information or the watermark are fetched. According to the change point information fetched, control information is generated for controlling the copy limit information. When the input signal has ended, a code for preventing altering is calculated, it is confirmed that the copy limit information or the watermark has not been altered, and the control information generated is recorded together with the video information to the recording medium of copy destination.
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申请公布号 |
CA2422358(A1) |
申请公布日期 |
2003.03.11 |
申请号 |
CA20022422358 |
申请日期 |
2002.07.12 |
申请人 |
SONY CORPORATION |
发明人 |
NAKAMURA, MASANOBU;KATO, MOTOKI |
分类号 |
G06T1/00;G11B19/12;G11B20/00;G11B27/034;G11B27/32;H04N5/765;H04N5/913;H04N9/79;H04N9/804;(IPC1-7):H04N5/91;G11B20/10 |
主分类号 |
G06T1/00 |
代理机构 |
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代理人 |
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主权项 |
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