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    • 3. 发明公开
    • 보조 정보신호의 채널 데이터 스트림 내의 삽입
    • 嵌入通道数据流中的二级信息信号
    • KR1020070005563A
    • 2007-01-10
    • KR1020067014361
    • 2005-01-07
    • 코닌클리케 필립스 엔.브이.
    • 벤트펠젠페트루스에이치.씨.코에네빌렘엠.제이.엠.
    • G11B20/14G11B20/10H03M5/14H03M5/00
    • G11B20/00579G11B20/00086G11B20/1426G11B2020/1453
    • The present invention relates to a method and a corresponding device for embedding a secondary information signal in a channel data stream of encoded primary information signal. In order to make it more difficult for unauthorized persons or devices to retrieve the location of storage of the secondary information signal or its content itself a device is proposed according to the present invention comprising: - an encoder (1) for encoding said primary information signal into a channel data stream, - a control unit (3) for controlling the DC content of said channel data stream, - a secondary information signal embedding unit (2) for embedding said secondary information signal in said channel data stream by using freedoms in the DC control, and - an adaptation unit (4) for adapting the DC control by making non-optimal, arbitrary or random choices of the DC control at a number of locations of said channel data stream. ® KIPO & WIPO 2007
    • 本发明涉及用于将次要信息信号嵌入编码的主信息信号的信道数据流中的方法和相应装置。 为了使未经授权的人员或设备更难以检索辅助信息信号或其内容本身的存储位置,根据本发明提出了一种设备,包括: - 编码器(1),用于对所述主信息信号 进入信道数据流, - 控制所述信道数据流的DC内容的控制单元(3), - 辅助信息信号嵌入单元(2),用于通过使用所述信道数据流中的自由将所述辅助信息信号嵌入所述信道数据流 DC控制,以及 - 适配单元(4),用于通过在所述信道数据流的多个位置处进行DC控制的非最优,任意或随机的选择来适配DC控制。 ®KIPO&WIPO 2007
    • 4. 发明公开
    • 정보를 인접한 피트 마크의 형태로 기록매체에 기록하는기록장치 및 방법
    • 用于记录连续标记形式的记录载体信息的记录装置和方法
    • KR1020060103259A
    • 2006-09-28
    • KR1020067008128
    • 2004-10-20
    • 코닌클리케 필립스 엔.브이.
    • 임민크알베르트에이치.제이.반데르리알렉산더엠.브를스도미니크엠.코에네빌렘엠.제이.엠.
    • G11B7/0045G11B7/013G11B7/14G11B7/00
    • G11B7/24085G11B7/00454G11B7/14G11B7/24088
    • A recording apparatus for recording channel symbols of a channel data stream on a record carrier (50), said apparatus being adapted for recording said channel symbols as a channel band (cb) of at least two symbol rows (sr) one-dimensionally evolving along a first direction (t) and aligned with each other along a second direction (r), said two directions constituting a two-dimensional lattice of symbol cells (sc) each being associated with a symbol area (sa) of the record carrier (50). To reduce the occurrence of leading and trailing edges of pit-marks in the recorded channel band, and in order to be able to write a small radial extent in said second direction in view of limiting cross-write effects, it is proposed to record a channel symbols in the form of a mark area (rpm) having a longitudial shape of a length in said first direction (1) substantially equal to the length of a symbol area (sa) in said first direction (t) and of a width in said second direction (r) being smaller than the width of a symbol area (sa) in said second direction (sa).
    • 一种记录装置,用于在记录载体(50)上记录信道数据流的信道符号,所述装置适用于将所述信道符号记录为沿着一维演化的至少两个符号行(sr)的信道带(cb) 第一方向(t)并且沿着第二方向(r)彼此对准,所述两个方向构成符号单元(sc)的二维网格,每个符号单元(sc)与记录载体(50)的符号区域(sa)相关联 )。 为了减少记录的频道频带中的凹坑的前缘和后沿的发生,并且为了能够在限制交叉写入效应的情况下能够在所述第二方向上写入小的径向范围,建议记录 具有在所述第一方向(1)上的长度的纵向形状的标记区域(rpm)的形式的通道符号基本上等于所述第一方向(t)上的符号区域(sa)的长度,并且宽度在 所述第二方向(r)小于所述第二方向(sa)上的符号区域(sa)的宽度。
    • 7. 发明公开
    • 검출기, 재생장치, 수신기 및 검출방법
    • 检测器,再现设备,接收器和检测方法
    • KR1020020029430A
    • 2002-04-18
    • KR1020027000910
    • 2001-05-09
    • 코닌클리케 필립스 엔.브이.
    • 포지디스카랄람포스코에네빌렘엠.제이.엠.베르그만스요하네스더블유.엠.
    • G11B20/10
    • 런길이가 최소값 m인 런길이 제한 시퀀스를 나타낸 입력정보신호(A
      i )로부터 디지털 신호( )를 검출하는 검출기(30)가 개시되어 있다. 검출기(30)는, - 상기 입력정보신호(A
      i )로부터 예비 이진신호(B
      i )를 발생하는 수단(60, 62)과, - 적어도 m+1보다 크거나 같은 길이를 갖는 단극 시퀀스의 제 1 인접 비트, 길이 m을 갖는 하나 또는 그 이상의 단극 시퀀스 및 적어도 m+1보다 크거나 같은 길이를 갖는 단극 시퀀스의 제 2 인접 비트를 연속적으로 포함하는 예비 이진신호(B
      i )내의 연속적인 비트로 이루어진 혼합 시퀀스를 식별하는 수단(86)과, - 런길이 제약을 위반하지 않고 상기 혼합 시퀀스내의 이진 값 극성들을 변화시켜서 상기 혼합 시퀀스로부터 얻어지고, 예비 이진신호로부터 얻어진 그 혼합 시퀀스를 포함하는 시퀀스로 이루어진 세트를 발생하는 수단(84, 86)과, - 상기 이진 값의 시퀀스에 대응한 트렐리스를 통한 경로에 대한 분기 메트릭(d)의 합이고, 상기 세트의 2 이상의 시퀀스를 위한 경로 메트릭(D)을 산출하는 수단(94, 96)과, - 그 경로 메트릭에 의거하여 입력정보신호(A
      i )로 나타낸 입력 시퀀스에 대응하는 최고의 가능성을 갖는 상기 세트로부터 시퀀스를 식별하는 수단(86, 98, 100)을 구비한다.
    • 10. 发明公开
    • 정보 매체로부터 정보를 판독하기 위한 장치 및 방법
    • 从信息载体读取信息的装置和方法
    • KR1020060111517A
    • 2006-10-27
    • KR1020067009643
    • 2004-11-03
    • 코닌클리케 필립스 엔.브이.
    • 인빈임민크알베르트에이치.제이.패디알렉산더코에네빌렘엠.제이.엠.
    • G11B7/005G11B7/09G11B7/00
    • G11B7/005G11B7/0903G11B19/045
    • In modem optical disc systems, inter-track spacing is chosen relatively small in order to allow high storage densities. As a result, the optical spot has a radius comparable with the track pitch, and the data written on neighboring tracks appear in the target track signal in the form of inter-track interference (cross- talk). To tackle the cross-talk problem, cross-talk canceling schemes are normally employed. These schemes use three spots, one spot on the main track and two satellite spots on adjacent tracks. The read signal (C) is improved by minimizing the cross-talk between the satellite signals (S +,S-) and the read signal (C). However, due to the decreasing inter-track spacing, the decorrelation concept fails since the satellite spots read too much central track information and become strongly correlated with the read signal (C), which causes " leakage" in the decorrelation. The present invention solves this problem with an additional circuit for outputting improved satellite signals (S'+, S'-)which circuit suppresses cross-talk of the main track present in the satellite signals (S+,S-) by minimizing a correlation between the satellite signals (S+,S-) and the read signal (C), the improved satellite signals (S'+, S'-)being subsequently fed to the first circuit which is arranged to suppress the cross-talk of the read signal (C) by minimizing a correlation between the improved read signal (C) and the improved satellite signals (S'+, S'-).
    • 在调制解调器光盘系统中,为了允许高存储密度,选择相对较小的间隙间距。 结果,光点具有与轨道间距相当的半径,并且写入相邻轨道的数据以轨道间干扰(串扰)的形式出现在目标轨迹信号中。 为了解决串扰问题,通常采用串扰消除方案。 这些方案使用三个点,主轨道上有一个点,相邻轨道上有两个卫星点。 通过最小化卫星信号(S +,S-)和读取信号(C)之间的串扰来改善读取信号(C)。 然而,由于轨道间距减小,因为卫星点读取太多的中心轨迹信息并且与读信号(C)强相关,因此解相关概念失败,这导致去相关中的“泄漏”。 本发明通过用于输出改进的卫星信号(S'+,S')的附加电路来解决这个问题,该电路通过最小化卫星信号(S +,S)中存在的主轨道的串扰来最小化 卫星信号(S +,S-)和读取信号(C),随后将改进的卫星信号(S'+,S' - )馈送到第一电路,该第一电路被布置为抑制读取信号的串扰 (C)通过最小化改进的读信号(C)和改进的卫星信号(S'+,S')之间的相关性来实现。