公开(公告)号：EP1667140A1

公开(公告)日：2006-06-07

申请号：EP03818706.8

申请日：2003-09-17

申请人： FUJITSU LIMITED

发明人： AOYAMA, Nobuhide, c/o FUJITSU LIMITED

IPC分类号： G11B11/105

CPC分类号： G11B11/10597 ,  G11B7/0053 ,  G11B7/0079 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B11/10508 ,  G11B11/10517 ,  G11B11/10543 ,  G11B11/10554

摘要： For a concurrent ROM-RAM recording medium, the present invention provides an optical information processing apparatus which can accurately read a RAM signal at the time of high-speed transfer without reducing a phase pit depth. The optical information processing apparatus is an optical information processing apparatus for controlling writing and reading of information on a concurrent ROM-RAM recording medium recording ROM signal information as a phase pit on a track and magneto-optically recording RAM signal information on the phase pit, comprising an optical system for forming two (2) first and second beam spots with an interval on the same track of the recording medium; a circuit unit for modulating the first beam spot intensity with a second ROM signal read by the second beam spot; and a circuit for detecting a RAM signal from a first ROM signal read by the first beam spot.

摘要翻译： 对于并发的ROM-RAM记录介质，本发明提供了一种在不降低相位深度的情况下可高精度地读取RAM信号的光信息处理装置。 光信息处理装置是用于控制对并行ROM-RAM记录介质上的信息的写入和读取的光学信息处理装置，其记录作为轨道上的相位凹坑的ROM信号信息和关于相位凹坑的磁光记录RAM信号信息， 包括用于在所述记录介质的相同轨迹上间隔地形成两个（2）第一和第二光束点的光学系统; 电路单元，用于利用由第二光束点读取的第二ROM信号来调制第一光束光斑强度; 以及用于从由第一光束点读取的第一ROM信号中检测RAM信号的电路。

公开(公告)号：EP1498890A1

公开(公告)日：2005-01-19

申请号：EP02718578.4

申请日：2002-04-15

申请人： FUJITSU LIMITED

发明人： AOYAMA, Nobuhide, c/o FUJITSU LIMITED ,  MORIMOTO, Yasuaki, c/o FUJITSU LIMITED

IPC分类号： G11B11/105

CPC分类号： G11B7/0079 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10584 ,  G11B11/10597 ,  G11B20/10527 ,  G11B2020/10546 ,  G11B2020/1062 ,  G11B2020/10962 ,  G11B2020/1259 ,  G11B2020/1287 ,  G11B2020/1461 ,  G11B2020/1843

摘要： An optical disk apparatus records new information related to the ROM information into RAM at a position linked with the ROM information of an optical information storage medium while continuously regenerating the ROM information of the optical information storage medium. At least the ROM signals are read at n (n > 2) times of the information regeneration velocity V, which is a reference, and stored in a buffer memory for reading, then the stored information is output at a velocity of the information regeneration velocity V. And while the stored information is being output from the buffer memory for reading, the input information is stored in the buffer memory for writing, then the optical head is accessed an address position that is managed so that the time relationship of the output information and the input information link for recording.

公开(公告)号：EP1467366A1

公开(公告)日：2004-10-13

申请号：EP03701056.8

申请日：2003-01-10

申请人： FUJITSU LIMITED

发明人： AOYAMA, Nobuhide, c/o FUJITSU LIMITED ,  AKIYAMA, Ryota, c/o FUJITSU LIMITED ,  MORIMOTO, Yasuaki, c/o FUJITSU LIMITED

IPC分类号： G11B20/10 ,  G11B7/30 ,  G11B11/105 ,  G06F12/14

CPC分类号： G11B11/10597 ,  G11B7/0079 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/00152 ,  G11B20/0021 ,  G11B20/00507 ,  G11B20/00659 ,  G11B20/1262 ,  G11B2020/1259 ,  G11B2220/211 ,  G11B2220/2525

摘要： A security system of the present invention using an optical information recording medium allowing concurrent reading out of ROM-RAM information, is able to receive data from the optical information recording medium having an identification symbol recording region recording an identification symbol identifying the medium, a ROM region recording plain text data, and a magneto-optical recording film formed in a region corresponding to the ROM region, the magneto-optical recording film recording encrypted data of the plain text data, the security system being configured such that the recording medium recording a decryption program for decrypting the encrypted data is usable, the security system comprising a reception unit for receiving the encrypted data in response to a data transmission request that conforms to the identification symbol identifying the optical information recording medium; a recording unit for recording in the recording medium the encrypted data received from the reception unit; and a decryption unit for decrypting with the decryption program the encrypted data recorded in the recording medium.

摘要翻译： 使用允许同时读出ROM-RAM信息的光学信息记录介质的本发明的安全系统能够从具有记录识别介质的识别符号的识别符号记录区域的光学信息记录介质接收数据，ROM 区域记录纯文本数据，以及形成在对应于ROM区域的区域中的磁光记录膜，磁光记录膜记录明文数据的加密数据，安全系统被配置为使得记录介质记录 用于解密加密数据的解密程序是可用的，该安全系统包括：接收单元，用于响应于符合识别光学信息记录介质的识别符号的数据传输请求而接收加密数据; 记录单元，用于在记录介质中记录从接收单元接收的加密数据; 以及解密单元，用于用解密程序解密记录在记录介质中的加密数据。