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    Document security system
    3.
    发明授权
    Document security system 有权
    文件安全系统

    公开(公告)号：US07129840B2

    公开(公告)日：2006-10-31

    申请号：US10235030

    申请日：2002-09-03

    申请人： Jonathan J. Hull ,  Jamey Graham ,  Dar-Shyang Lee ,  Hideki Segawa

    发明人： Jonathan J. Hull ,  Jamey Graham ,  Dar-Shyang Lee ,  Hideki Segawa

    IPC分类号： G08B13/14

    CPC分类号： G08B13/2454

    摘要： Document monitoring provides a measure of document security. Documents incorporating radio frequency identification (RFID) tags can be monitored by appropriate interrogation components for movement activity. A surface suitable for placement of documents is configured for monitoring RFID tagged documents. Such documents can be monitored in a document processing device to control access to the document processing functions.

    摘要翻译： 文档监控提供文档安全性的度量。 采用射频识别（RFID）标签的文件可以通过适当的询问组件来监测移动活动。 适合放置文件的表面被配置为用于监视RFID标签的文档。 可以在文档处理设备中监视这些文档，以控制对文档处理功能的访问。

    Optical type information recording medium having specified pit and guide groove shapes
    5.
    发明授权
    Optical type information recording medium having specified pit and guide groove shapes 失效
    具有指定凹坑和导槽形状的光学类型信息记录介质

    公开(公告)号：US5060223A

    公开(公告)日：1991-10-22

    申请号：US388569

    申请日：1989-08-01

    申请人： Hideki Segawa

    发明人： Hideki Segawa

    IPC分类号： G11B7/095 ,  G11B7/013 ,  G11B7/09 ,  G11B7/24

    CPC分类号： G11B7/24085 ,  G11B7/0938

    摘要： An optical type information recording medium has guide grooves for tracking formed in a concentric or spiral shape at a predetermined pitch; and a pre-format pit formed approximately midway between the guide grooves in the normal direction thereof and recording at least address information. The optical type information recording medium is constructed such that the predetermined pitch is a value ranged from 1.4 .mu.m to 2.0 .mu.m, and the depth of the pre-format pit is a value ranged from 0.46 .lambda./n to 0.58 .lambda./n where n shows the refractive index of a substrate of the medium and .lambda. shows a wavelength of a light source for reading the information recorded to the medium, and the cross-sectional shape of the pre-format pit in the normal direction is provided in a range represented by a first predetermined inequality using a function of the second degree, and the cross-sectional shape of the guide grooves in the normal direction is provided in a range represented by a second predetermined inequality using a function of the second degree.

    摘要翻译： 光学型信息记录介质具有以预定间距以同心或螺旋形状形成的用于跟踪的引导槽; 以及形成在其沿法线方向的引导槽之间的中间的预格式凹坑，并且至少记录地址信息。 光学类型信息记录介质被构造成使得预定间距是从1.4μm到2.0μm的值，并且预格式凹坑的深度是从0.46λ/ n到0.58λ/ n的值，其中 n表示介质的基板的折射率，λ表示用于读取记录在介质上的信息的光源的波长，并且在正常方向上的预格式化凹坑的横截面形状设置在 由使用第二度的函数的第一预定不等式表示，并且引导槽沿法线方向的横截面形状设置在使用第二度的函数的由第二预定不等式表示的范围内。

    Servo error detecting method of an optical disc system
    6.
    发明授权
    Servo error detecting method of an optical disc system 失效
    光盘系统的伺服错误检测方法

    公开(公告)号：US5161136A

    公开(公告)日：1992-11-03

    申请号：US323301

    申请日：1989-03-14

    申请人： Hideki Segawa

    发明人： Hideki Segawa

    IPC分类号： G11B21/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/09 ,  G11B19/04

    CPC分类号： G11B7/0901 ,  G11B19/04

    摘要： An optical disc system includes an optical disc which is formatted to store data in sectors. A tracking error signal is monitored and if the tracking error signal exceeds a predetermined threshold level, the address information of a next sector following a target sector in which data is to be recorded or from which data is to be read out is read out. And, if the address information thus read out has been found to indicate an address which is consecutive to the address of the target sector, the occurrence of a tracking error is determined. On the other hand, if the address information thus read out has been found to indicate an address which is not consecutive to the address of the target sector, then the writing (recording) operation is terminated so as to prevent overwriting of data in an undesired sector.

    摘要翻译： 光盘系统包括被格式化以在扇区中存储数据的光盘。 监视跟踪误差信号，并且如果跟踪误差信号超过预定阈值电平，则读出要在其中记录数据的目标扇区或从哪个数据被读出的下一个扇区的地址信息。 并且，如果已经发现如此读出的地址信息指示与目标扇区的地址连续的地址，则确定发生跟踪误差。 另一方面，如果已经发现如此读出的地址信息指示与目标扇区的地址不连续的地址，则终止写入（记录）操作，以防止在不希望的 部门。

    Optical disc recording/reproducing control
    7.
    发明授权
    Optical disc recording/reproducing control 失效
    光盘记录/重放控制

    公开(公告)号：US5105416A

    公开(公告)日：1992-04-14

    申请号：US323316

    申请日：1989-03-14

    申请人： Hideki Segawa ,  Michihara Abe

    发明人： Hideki Segawa ,  Michihara Abe

    IPC分类号： G11B7/004 ,  G11B7/007 ,  G11B7/125 ,  G11B19/02 ,  G11B20/12 ,  G11B20/18 ,  G11B27/30

    CPC分类号： G11B7/126 ,  G11B19/02 ,  G11B20/1217 ,  G11B20/1883 ,  G11B27/3027 ,  G11B7/004 ,  G11B7/00745 ,  G11B2020/10888 ,  G11B2220/20 ,  G11B2220/2537

    摘要： An optical disc is divided into a plurality of sectors each of which includes an address section, a flag section and a data section. First sector management data are stored in the flag section, normally in the form of a flag pit. In one aspect of the invention, the first sector management data are recorded in the flag section at higher laser beam power than the power used for recording data in the data section. In another aspect of the invention, second sector management data are additionally stored in the data section in the form of a special pattern. In this case, the second sector management data are read out if no sector management data have been read from the flag section of the sector.

    摘要翻译： 光盘被分成多个扇区，每个扇区包括地址部分，标志部分和数据部分。 第一扇区管理数据通常以标志坑的形式存储在标志部分中。 在本发明的一个方面，第一扇区管理数据以比用于在数据部分中记录数据的功率更高的激光束功率被记录在标志部分中。 在本发明的另一方面，第二扇区管理数据以特殊模式的形式另外存储在数据部分中。 在这种情况下，如果没有从扇区的标志部分读取扇区管理数据，则读出第二扇区管理数据。