Rotation control apparatus operating with a sync signal having variable
intervals
    92.
    发明授权
    Rotation control apparatus operating with a sync signal having variable intervals 有权
    具有可变间隔的同步信号的旋转控制装置

    公开(公告)号:US5920530A

    公开(公告)日:1999-07-06

    申请号:US191999

    申请日:1998-11-16

    摘要: A rotation control apparatus which can maintain an accurate rotating state even in a high density optical disk (DVD) having a structure such that parts of the sync signal are recorded at an interval different from that of the other sync signal parts. The apparatus has: a unit period signal generator for generating a period signal of a unit period; a pre-pit detector for detecting a pre-pit from the DVD; a phase difference detector for detecting a phase difference between the detection timing of the pre-pit and the unit period signal; and a holding circuit for holding the phase difference detected. The rotation of the DVD is controlled on the basis of the phase difference held at the holding circuit.

    摘要翻译: 即使在具有如下结构的高密度光盘(DVD)中也能够保持精确旋转状态的旋转控制装置,即以与其它同步信号部分不同的间隔记录同步信号的部分。 该装置具有:单位周期信号发生器,用于产生单位周期的周期信号; 用于从DVD检测预凹坑的预坑检测器; 相位差检测器,用于检测预凹坑的检测定时与单位周期信号之间的相位差; 以及保持电路,用于保持检测到的相位差。 基于在保持电路上保持的相位差来控制DVD的旋转。

    Pattern input apparatus
    93.
    发明授权
    Pattern input apparatus 失效
    图案输入装置

    公开(公告)号:US5239140A

    公开(公告)日:1993-08-24

    申请号:US802035

    申请日:1991-12-03

    CPC分类号: G06F3/0414 G06K9/222

    摘要: A pattern input apparatus designed to improve the operational easiness comprises a plurality of contact detecting device, arranged on a detection surface, each for generating a detection signal upon contact with an object. A pattern drawn by the object moving in contact with the detection surface is discriminated, using the locus or the amount of displacement vector of a point located approximately at the center between at least two adjoining ones of the plurality of contact detecting devices on the detection surface, when the detection signals are output from the at least two adjoining ones of the plurality of contact detecting devices.

    摘要翻译: 设计用于提高操作容易度的图案输入装置包括布置在检测表面上的多个接触检测装置,每个用于在与物体接触时产生检测信号。 使用位于检测表面上的多个接触检测装置中的至少两个邻接检测装置之间的位于中心附近的点的位置矢量的轨迹或位移来区分由与检测表面接触移动的物体绘制的图案 当检测信号从多个接触检测装置中的至少两个相邻的接触检测装置输出时。

    Information recording medium, and information reproducing apparatus and method
    96.
    发明申请
    Information recording medium, and information reproducing apparatus and method 失效
    信息记录介质和信息再现装置和方法

    公开(公告)号:US20050036413A1

    公开(公告)日:2005-02-17

    申请号:US10890384

    申请日:2004-07-14

    摘要: On an optical disc, a record mark having a variable length according to pit data DP is formed at a displaced position to which the record mark is displaced, in a direction crossing the reading direction thereof, according to a wobble signal WB obtained by modulating wobble data DW in a predetermined modulating method. A second wobble synchronization signal D-SYNCw, as a dummy, is recorded on the optical disc, away from the start position of the wobble data DW.

    摘要翻译: 在光盘上,根据凹坑数据DP具有可变长度的记录标记根据通过调制摆动获得的摆动信号WB形成在与其读取方向相交的方向上移动记录标记的位移位置 数据DW。 作为虚拟的第二摆动同步信号D-SYNCw被记录在光盘上,远离摆动数据DW的起始位置。

    Rotation control apparatus operating with a sync signal having variable intervals
    98.
    再颁专利
    Rotation control apparatus operating with a sync signal having variable intervals 有权
    具有可变间隔的同步信号的旋转控制装置

    公开(公告)号:USRE38595E1

    公开(公告)日:2004-09-21

    申请号:US09899104

    申请日:2001-07-06

    IPC分类号: G11B700

    摘要: A rotation control apparatus which can maintain an accurate rotating state even in a high density optical disk (DVD) having a structure such that parts of the sync signal are recorded at an interval different from that of the other sync signal parts. The apparatus has: a unit period signal generator for generating a period signal of a unit period; a pre-pit detector for detecting a pre-pit from the DVD; a phase difference detector for detecting a phase difference between the detection timing of the pre-pit and the unit period signal; and a holding circuit for holding the phase difference detected. The rotation of the DVD is controlled on the basis of the phase difference held at the holding circuit.

    Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function
    99.
    发明授权
    Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function 失效
    具有复制保护功能的记录和再现系统,记录装置和再现装置

    公开(公告)号:US06633723B1

    公开(公告)日:2003-10-14

    申请号:US09346748

    申请日:1999-07-02

    IPC分类号: H04N591

    摘要: A system comprising a recording apparatus for recording record information onto a recording medium and a reproducing apparatus for reading the record information from the recording medium and outputting it to reproduce, is provided. The record information includes: image information; a first identification information which represents any one of never copy, one copy and copy free; and a second identification information which represents either the never copy or the one copy. The never copy indicates copying is prohibited. The one copy indicates copying is once permitted. The copy free indicates copying is permitted. The recording apparatus controls recording the record information, and determines whether or not the record information is to be encrypted based upon the first identification information and the second identification information. The reproducing apparatus controls outputting the record information based upon the first identification information and whether the record information has been encrypted or not.

    摘要翻译: 提供了一种包括用于将记录信息记录到记录介质上的记录装置和用于从记录介质读取记录信息并将其输出以再现的再现装置的系统。 记录信息包括:图像信息; 第一个识别信息,代表从不复制,一个复制和复制免费的任何一个; 以及表示从不复制或一个副本的第二识别信息。 永不复制表示禁止复制。 一个副本表示一旦被允许复制。 免费的副本表示允许复制。 记录装置控制记录记录信息,并且基于第一识别信息和第二识别信息来确定记录信息是否被加密。 再现装置根据第一识别信息和记录信息是否被加密来控制输出记录信息。

    Apparatus for and method of adding information onto recording medium that enables additional recording

    公开(公告)号:US06631104B2

    公开(公告)日:2003-10-07

    申请号:US09900180

    申请日:2001-07-09

    IPC分类号: G11B509

    摘要: An apparatus for recording first information onto a recording medium, successively to second information that has been already recorded on the recording medium is provided. The first and second information are divided into a plurality of blocks. Each block includes a synchronization signal. This signal is located at a predetermined position in each block. A plurality of pre-pits are pre-formed on the recording medium at intervals of the predetermined length or an integer times the predetermined length. A reference signal with a predetermined frequency is pre-recorded on the recording medium. The apparatus has: a write clock signal generating device for generating a write clock signal on the basis of the reference signal; a pre-pit detecting device for detecting the pre-pits and outputting a pre-pit signal at a first timing, which is equal to a timing that each pre-pit is detected; a synchronization signal generating device for generating the synchronization signal and outputting the synchronization signal at a second timing synchronized with the write clock signal, and which is set so as to place the synchronization signal at the predetermined position in each block; a time relationship detecting device for detecting a time relationship between the pre-pit signal and the synchronization signal; a shifting device for shifting a phase of the write clock signal so as to make the detected time relationship equal to a predetermined time relationship; and a recording device for recording the first information and the synchronization signal onto the recording medium in accordance with the second timing.