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1. 发明申请

WO2004109681A2 COPY PROTECTION SYSTEM FOR DATA CARRIERS 审中-公开
标题翻译：数据载体的复制保护系统
公开(公告)号：WO2004109681A2
公开(公告)日：2004-12-16
申请号：PCT/GB2004/002433
申请日：2004-06-09
申请人： FIRST 4 INTERNET LTD , MILES, Anthony , BENSON, Iain , COBURN, Ceri , DAVIES, Ian
发明人： MILES, Anthony , BENSON, Iain , COBURN, Ceri , DAVIES, Ian
IPC分类号： G11B20/00
CPC分类号： G11B20/00086 , G11B20/00659 , G11B20/00688 , G11B20/00956
摘要： A copy-protected compact disc includes, within a single session, a table of contents (TOC) and a Video CD index (VI). Each track (T) is prefaced by unrecoverable data (UD) at a track start position (ATOC) indicated by the table of contents (TOC). However, the Video CD index (VI) indicates the actual position (AP) of the tracks. DVD players use the Video CD index (VI) to locate the tracks, while CD-ROM drives use the table of contents (TOC) and read the unrecoverable data (UD), which prevents them from reading the subsequent track (T). The unrecoverable data (UD) may be prefaced by data pointers (DP) which cause the CD-ROM drive to load a player program in response to the error condition. The player program can be used to play the tracks (T), but restricts copying. Subchannel data (P; DX) causes audio CD players to ignore the Video CD index (VI) and the unrecoverable data (UD), and to play the tracks (T) at their actual start positions (AP).
摘要翻译：复制保护的光盘在单个会话内包括目录（TOC）和视频CD索引（VI）。每个轨道（T）由内容表（TOC）指示的轨道起始位置（ATOC）处的不可恢复数据（UD）开头。然而，视频CD索引（VI）指示轨道的实际位置（AP）。 DVD播放机使用视频CD索引（VI）来定位曲目，而CD-ROM驱动器使用目录（TOC）并读取不可恢复数据（UD），这阻止它们读取后续轨道（T）。不可恢复数据（UD）可以由数据指针（DP）开头，数据指针（DP）使得CD-ROM驱动器响应错误状况加载播放器程序。播放器程序可用于播放曲目（T），但限制复制。子信道数据（P; DX）使音频CD播放器忽略视频CD索引（VI）和不可恢复数据（UD），并在其实际开始位置（AP）播放曲目（T）。

2. 发明申请

WO2004109681A3 COPY PROTECTION SYSTEM FOR DATA CARRIERS 审中-公开
标题翻译：数据载体复制保护系统
公开(公告)号：WO2004109681A3
公开(公告)日：2005-03-24
申请号：PCT/GB2004002433
申请日：2004-06-09
申请人： FIRST 4 INTERNET LTD , MILES ANTHONY , BENSON IAIN , COBURN CERI , DAVIES IAN
发明人： MILES ANTHONY , BENSON IAIN , COBURN CERI , DAVIES IAN
IPC分类号： G11B20/00 , G06F1/00
CPC分类号： G11B20/00086 , G11B20/00659 , G11B20/00688 , G11B20/00956
摘要： A copy-protected compact disc includes, within a single session, a table of contents (TOC) and a Video CD index (VI). Each track (T) is prefaced by unrecoverable data (UD) at a track start position (ATOC) indicated by the table of contents (TOC). However, the Video CD index (VI) indicates the actual position (AP) of the tracks. DVD players use the Video CD index (VI) to locate the tracks, while CD-ROM drives use the table of contents (TOC) and read the unrecoverable data (UD), which prevents them from reading the subsequent track (T). The unrecoverable data (UD) may be prefaced by data pointers (DP) which cause the CD-ROM drive to load a player program in response to the error condition. The player program can be used to play the tracks (T), but restricts copying. Subchannel data (P; DX) causes audio CD players to ignore the Video CD index (VI) and the unrecoverable data (UD), and to play the tracks (T) at their actual start positions (AP).
摘要翻译：复制保护的光盘在单个会话内包括目录（TOC）和视频CD索引（VI）。每个轨道（T）由内容表（TOC）指示的轨道起始位置（ATOC）处的不可恢复数据（UD）开始。然而，视频CD索引（VI）指示轨道的实际位置（AP）。 DVD播放机使用视频CD索引（VI）来定位曲目，而CD-ROM驱动器使用目录（TOC）并读取不可恢复数据（UD），这阻止它们读取后续轨道（T）。不可恢复数据（UD）可以由数据指针（DP）开头，数据指针（DP）使CD-ROM驱动器响应错误状况加载播放器程序。播放器程序可用于播放曲目（T），但限制复制。子信道数据（P; DX）使音频CD播放器忽略视频CD索引（VI）和不可恢复数据（UD），并在其实际开始位置（AP）播放曲目（T）。

3. 发明申请

WO2003077246A2 COPY PROTECTION SYSTEM FOR DATA CARRIERS 审中-公开
标题翻译：数据载体复制保护系统
公开(公告)号：WO2003077246A2
公开(公告)日：2003-09-18
申请号：PCT/GB2003/001006
申请日：2003-03-10
申请人： FIRST 4 INTERNET Ltd , MILES, Anthony, William
发明人： MILES, Anthony, William
IPC分类号： G11B20/00
CPC分类号： G11B20/00086 , G11B20/00202 , G11B20/0021 , G11B20/00333 , G11B20/00507 , G11B20/00615 , G11B20/00753 , G11B20/00956 , G11B2020/10546
摘要： A data payload PD is recorded on a compact disc in a format including a lead-in indicating a track start address ATOC and a subchannel P which changes state at a payload start address AP, subsequent to the track start address ATOC. Data ED recorded at the track start address ATOC includes unrecoverable data. Where the data payload PD is an audio track, an audio-only player begins to search sequentially from the track start address ATOC until the subchannel changes state, and reproduces the audio track from that point. A data player, on the other hand, begins to reproduce data from the track start address ATOC. When the unrecoverable data is read, the read operation is aborted, as it appears that the data has been corrupted. This operation cannot be easily circumvented, because it is not normally acceptable to ignore corrupt CD-ROM data. The disc may also include a second session containing an encrypted version of the data payload PD, where each sector is encrypted using a different key which is derived from a sector address byan algorithm and requires a special player program which performs the decryption. A supervisory program prevents circumvention of the copy protection.
摘要翻译：数据有效载荷PD以包括指示轨道开始地址ATOC的导入和在有效载荷起始地址AP之后改变状态的子信道P的格式被记录在光盘上，在轨道开始地址ATOC之后。轨道起始地址ATOC记录的数据ED包括不可恢复的数据。在数据有效载荷PD是音频轨道的情况下，仅音频播放器开始从轨道开始地址ATOC顺序地搜索直到子信道改变状态，并且从该点再现音频轨道。另一方面，数据播放器开始从轨道起始地址ATOC再现数据。读取不可恢复的数据时，读取操作将被中止，因为数据已被破坏。此操作无法轻易避免，因为忽略损坏的CD-ROM数据通常不被接受。盘还可以包括包含数据有效载荷PD的加密版本的第二会话，其中每个扇区使用通过算法从扇区地址导出的不同密钥加密，并且需要执行解密的特殊播放器程序。监督程序可以防止避免复制保护。

4. 发明申请

WO2003077246A3 COPY PROTECTION SYSTEM FOR DATA CARRIERS 审中-公开
公开(公告)号：WO2003077246A3
公开(公告)日：2003-09-18
申请号：PCT/GB2003/001006
申请日：2003-03-10
申请人： FIRST 4 INTERNET Ltd , MILES, Anthony, William
发明人： MILES, Anthony, William
IPC分类号： G11B20/00
摘要： A data payload PD is recorded on a compact disc in a format including a lead-in indicating a track start address ATOC and a subchannel P which changes state at a payload start address AP, subsequent to the track start address ATOC. Data ED recorded at the track start address ATOC includes unrecoverable data. Where the data payload PD is an audio track, an audio-only player begins to search sequentially from the track start address ATOC until the subchannel changes state, and reproduces the audio track from that point. A data player, on the other hand, begins to reproduce data from the track start address ATOC. When the unrecoverable data is read, the read operation is aborted, as it appears that the data has been corrupted. This operation cannot be easily circumvented, because it is not normally acceptable to ignore corrupt CD-ROM data. The disc may also include a second session containing an encrypted version of the data payload PD, where each sector is encrypted using a different key which is derived from a sector address byan algorithm and requires a special player program which performs the decryption. A supervisory program prevents circumvention of the copy protection.

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