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1.发明授权Apparatus for writing digital information in a disc-shaped optically readable record carrier 失效用于将数字信息写入盘形光学可读记录载体的装置
公开(公告)号：US4366564A
公开(公告)日：1982-12-28
申请号：US127349
申请日：1980-03-05
IPC分类号： G11B7/00 , G11B7/0045 , G11B20/14 , H04N5/76
CPC分类号： G11B7/0045 , G11B20/1419 , G11B20/1423
摘要： An apparatus for recording optically detectable information in a record carrier provided with information areas arranged in accordance with a spiral or concentric track pattern, which areas alternate with synchronization areas each containing the address of the associated information area. Recording is effected with a first modulated laser beam, while a second beam is projected after the first beam for reading the recorded information. The track pattern has previously been provided with a periodic track modulation of a frequency at which the power spectrum of the information to be recorded has a substantially zero value. The apparatus comprises a first and a second filter for filtering a signal corresponding to the track modulation out of the signal derived by detecting the first or second laser beam reflected or transmitted by the record carrier. In series with the second filter there is included a delay network from which a synchronization signal is available. Furthermore, there is provided a phase comparator which, during reading of the synchronization areas, determines the phase difference between the signals obtained from the first and the second filter and which controls the delay network in such a way that the output signal of the delay network is in phase with the output signal of the first filter.
摘要翻译： 一种用于在记录载体中记录光学可检测信息的装置，其具有根据螺旋或同心轨道图案布置的信息区域，该区域与每个包含相关信息区域的地址的同步区域交替。 用第一调制激光束进行记录，而在第一光束之后投射第二光束以读取所记录的信息。 先前已经提供了轨迹图案，其中要记录的信息的功率谱具有基本为零的频率的周期轨道调制。 该装置包括第一滤波器和第二滤波器，用于通过检测由记录载体反射或发射的第一或第二激光束而导出的信号中对应于轨道调制的信号进行滤波。 与第二滤波器串联包括延迟网络，同步信号从该延迟网络可用。 此外，提供了一种相位比较器，其在同步区域的读取期间确定从第一和第二滤波器获得的信号之间的相位差，并且以这样的方式控制延迟网络，使得延迟网络的输出信号 与第一滤波器的输出信号同相。
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2.发明授权
公开(公告)号：US4238843A
公开(公告)日：1980-12-09
申请号：US008221
申请日：1979-01-31
IPC分类号： G11B20/10 , G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B20/14 , G11B23/00 , G11B23/30 , G11B23/36 , G11C13/04
CPC分类号： G11B7/00745 , G11B20/1419 , G11B20/1423
摘要： A disc-shaped record carrier having an information track which is divided into a plurality of sectors per track circumference. Each sector is divided into a data section, in which the data can be recorded, and a synchronizing section. This synchronizing section consists of an optically detectable relief structure and comprises an indicator portion and an address portion. The address portion contains the information about the track number and the sector number. The indicator portion serves to define the beginning of the address portion unambiguously and for this purpose has such a relief structure that the indicator signal produced after cooperation with the radiation beam has a frequency which is clearly distinguishable from signal components resulting from the address portion.
摘要翻译： 一种盘形记录载体，其具有信息轨道，每个轨道圆周被划分成多个扇区。 每个扇区被划分成可记录数据的数据部分和同步部分。 该同步部分由光学可检测的浮雕结构组成，并包括指示器部分和地址部分。 地址部分包含关于轨道号和扇区号的信息。 指示器部分用于明确地定义地址部分的开始，并且为此目的具有这样的浮雕结构，即在与辐射束协作之后产生的指示符信号具有与由地址部分产生的信号分量明显区分的频率。
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3.发明授权Methods and systems for providing data track identifying information on a recording medium 有权用于在记录介质上提供数据轨迹识别信息的方法和系统公开(公告)号：US07646694B2
公开(公告)日：2010-01-12
申请号：US11551396
申请日：2006-10-20
IPC分类号： G11B7/0012
摘要： A method and system for formatting of recording media.
摘要翻译： 一种记录介质格式化方法和系统。
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4.发明授权Optically readable record carrier with track variations which provide clock and tracking signals and apparatus for recording and/or reproducing data from such a record carrier 失效具有轨道变化的光学可读记录载体，其提供时钟和跟踪信号以及用于从这样的记录载体记录和/或再现数据的装置
公开(公告)号：US4375088A
公开(公告)日：1983-02-22
申请号：US139924
申请日：1980-04-14
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/09 , G11B7/24 , G11B7/26 , G11B19/28 , G11B20/14
CPC分类号： G11B7/26 , G11B20/1419 , G11B20/1423 , G11B7/0904 , G11B7/24082
摘要： Disclosed is a record carrier for storage of digital data which is provided with a first periodic track variation having a period corresponding to a frequency at which the power spectrum of the digital signals is at a zero level. The first track variation produces a corresponding modulation of the radiation when scanned by a beam so that a clock signal can be derived from the detected radiation for synchronizing readout or recording of the data. The record carrier is further provided with a second periodic track variation in a direction transverse to the track direction having a period of the same order of magnitude, and preferably equal to the period of the first periodic track modulation. The second track variation produces a corresponding modulation of the beam which is detected and is used to generate to a tracking signal, the clock signal being used as phase reference signal for demodulation of the tracking signal. If the periods of the two track variations are equal, low-pass filtering automatically yields the tracking signal.
摘要翻译： 公开了一种用于存储数字数据的记录载体，其被提供有具有对应于数字信号的功率谱处于零电平的频率的周期的第一周期性轨道变化。 当由光束扫描时，第一轨迹变化产生辐射的相应调制，使得可以从检测到的辐射导出时钟信号，以同步数据的读出或记录。 记录载体还具有横向于具有相同数量级的周期的轨道方向的方向上的第二周期轨道变化，并且优选地等于第一周期轨道调制的周期。 第二轨道变化产生被检测的并被用于产生跟踪信号的波束的相应调制，时钟信号被用作解调跟踪信号的相位参考信号。 如果两个磁道变化的周期相等，则低通滤波自动产生跟踪信号。
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5.发明授权公开(公告)号：US07814395B2
公开(公告)日：2010-10-12
申请号：US11565991
申请日：2006-12-01
IPC分类号： G11C29/00
CPC分类号： G11B20/1866 , G11B20/1879 , G11B20/1883 , G11B2020/1062 , G11B2220/90
摘要： Strategy and methodology by which the various error sources are taken into account and methods applied to compensate substantially entirely for such errors and/or diminish the effect of such errors.
摘要翻译： 考虑到各种误差源的策略和方法，以及实际上完全补偿这些错误的方法和/或减少了这种错误的影响。
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6.发明授权Color television signal having color-difference signals alternating between two carriers 失效具有在两个载体之间交替的色差信号的彩色电视信号
公开(公告)号：US4188638A
公开(公告)日：1980-02-12
申请号：US930906
申请日：1978-08-04
申请人： Maarten R. de Haan
发明人： Maarten R. de Haan
CPC分类号： H04N9/7925 , H04N9/83
摘要： A transmission system for a color television signal, in particular a system for recording on and reproducing from a record carrier. The chrominance signal is divided into two separate color signals, which in a line-sequentially alternating fashion are modulated on two separate color carrier waves. The transmitted or recorded color television signal can simply be transformed into both a standard PAL and a standard SECAM signal. Owing to the line sequential alternation of the color signal, color errors which may arise owing to a mutual difference of the transfer characteristics for the two color signals are automatically compensated for in the case of reproduction via a PAL receiver.
摘要翻译： 用于彩色电视信号的传输系统，特别是用于在记录载体上记录和再现的系统。 色度信号被分成两个单独的颜色信号，其以行顺序交替的方式在两个分开的彩色载波上进行调制。 发送或记录的彩色电视信号可以简单地转换成标准PAL和标准SECAM信号。 由于颜色信号的行顺序交替，在通过PAL接收机的再现的情况下，由于两种颜色信号的传送特性的相互差异而可能产生的颜色误差被自动补偿。
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