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    • 74. 发明申请
    • METHOD OF MASKING DATA ON A STORAGE MEDIUM
    • 在存储介质上显示数据的方法
    • WO1995017750A1
    • 1995-06-29
    • PCT/US1994014784
    • 1994-12-19
    • JAMAIL, Randall
    • THOMPSON, David
    • G11B17/22
    • G11B27/329G11B7/005G11B7/007G11B7/28G11B11/10502G11B11/10595G11B19/02G11B20/10G11B20/1217G11B20/1883G11B23/282G11B27/034G11B27/105G11B27/11G11B27/3027G11B2020/10592G11B2220/20G11B2220/2529G11B2220/2545G11B2220/2562
    • A method of masking data on a storage medium for selective playback upon demand or for transportation to another medium. The method comprising the steps of (a) determining the position of the start location on the storage medium, (b) determining the position of the stop location on the storage medium, (c) positioning at least one data track on the storage medium between the start location and the stop location such that the data track has, adjacent thereto, enough space or time for accepting a concealed data track, and (d) impressing data on the storage medium for generating the concealed track having a hidden recording area such that the hidden recording area contains concealed data which can be accessed upon demand for transcription to another medium or for playback. The present invention can be adapted for use with different storage media such as, for example, a compact disk, a read-only memory compact disk, a mini-disk, a photo compact disk or the like. More particularly, the step of impressing data on the storage medium for generating the concealed track further comprises the step of generating the concealed track by identifying a position within the gap relative to either location or time for working with a player or transcriber and impressing the concealed track on the storage medium at the identified position.
    • 一种在存储介质上屏蔽数据以便根据需要或用于运输到另一介质进行选择性重放的方法。 该方法包括以下步骤:(a)确定存储介质上的起始位置的位置,(b)确定停止位置在存储介质上的位置,(c)将存储介质上的至少一个数据轨道定位在 开始位置和停止位置,使得数据轨道与其相邻具有用于接收隐藏的数据轨道的足够的空间或时间,以及(d)在存储介质上施加数据以产生具有隐藏记录区域的隐藏轨道,使得 隐藏的记录区域包含隐藏的数据,可以在需要转录到另一介质或进行回放时被访问。 本发明可以适用于不同的存储介质,例如光盘,只读存储器光盘,小型盘,照片光盘等。 更具体地说,在存储介质上产生隐藏轨道的数据压印步骤还包括以下步骤:通过识别相对于与播放器或转录器一起工作的任一位置或时间的间隙内的位置来生成隐藏轨迹,并将隐藏的轨迹 在识别位置的存储介质上轨迹。
    • 78. 发明申请
    • DATA REPRODUCING APPARATUS
    • 数据再现设备
    • WO1993007614A1
    • 1993-04-15
    • PCT/JP1992001253
    • 1992-09-30
    • KABUSHIKI KAISHA TOSHIBATANOUE, KokiYOSHIMARU, TomohisaUENO, Sueo
    • KABUSHIKI KAISHA TOSHIBA
    • G11B07/00
    • G11B20/10222G11B7/005G11B20/10009G11B20/1403G11B27/3027
    • A data reproducing apparatus which prevents erroneous reproduction of data even when the center of signal amplitude of data read out from an optical disk starts deviating. This apparatus includes read means for reading and outputting data stored in each block portion on the optical disk; binary means for converting the output signal to a binary signal by the use of a slice level; generation means for generating a charge width signal representing a phase difference between the binary signal and a clock signal, by comparing the binary signal with the clock signal outputted in a predetermined cycle when the read means reads the data stored in a data storage portion of the block portion; and means for changing the slice level of the binary means on the basis of the charge width signal generated by the generation means.
    • 即使当从光盘读出的数据的信号幅度的中心开始偏离时,数据再现装置也防止数据的错误再现。 该装置包括用于读取和输出存储在光盘上每个块部分中的数据的读取装置; 二进制装置,用于通过使用限幅电平将输出信号转换成二进制信号; 生成装置,用于通过将二进制信号与在预定周期中输出的时钟信号进行比较来产生表示二进制信号和时钟信号之间的相位差的电荷宽度信号,当读取装置读取存储在该数据存储部分中的数据时 块部分 以及用于基于由生成装置生成的电荷宽度信号来改变二进制装置的限幅电平的装置。
    • 80. 发明申请
    • METHOD FOR REPRODUCING SIGNAL IN OPTICALLY RECORDING MEDIUM
    • 在光学记录介质中再现信号的方法
    • WO1992014245A1
    • 1992-08-20
    • PCT/JP1991001438
    • 1991-10-19
    • SONY CORPORATIONFUKUMOTO, AtsushiUDAGAWA, ToshikiYOSHIMURA, ShunjiONO, MasumiYASUDA, Kouichi
    • SONY CORPORATION
    • G11B11/10
    • G11B7/005G11B11/10515G11B11/10595G11B19/02
    • A method for reproducing signals in an optically recording medium of the type in which recording pits are erased or embossed by the temperature rise of the medium caused through projecting a light beam for reading out signals, or of the type in which the reflection factors of recording pits are changed by the temperature rise of the medium caused through projecting a light beam. The change of the substantial size of a reproducing region because of the change of the linear velocity of the medium is prevented. For this prevention, for example, a sensing means (17) for sensing the position of the reproducing region in a radial direction of the magneto-optical disc (11) during the rotation of the disc (11) at a constant speed is provided. By controlling the laser power and the external magnetic field according to the output of the sensing means (17), the substantial size of the reproducing region is so controlled as to be constant always independently of the linear velocity in each reproducing position.
    • 本发明涉及一种用于在光学记录介质中再现信号的方法,其中通过增加由光束的投射引起的介质的温度来擦除或打印记录槽 用于读取信号,或由于光束投射引起的介质温度升高而改变记录槽的反射系数的类型。 例如通过使用检测再现区域的径向方向的位置的传感器(17),能够防止因支撑体的线速度的变化而产生的再现区域的大小的偏差 在该盘(11)的旋转过程中以恒定的速度移动该磁光盘(11)。 通过根据传感器(17)的输出结果来调节激光功率和外部磁场,可以调节再现区域的大小,使得无论每个再现位置的线速度如何,再现区域的大小总是恒定的 。