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    • 3. 发明授权
    • Information recording medium, recording apparatus, reproducing apparatus and reproducing method
    • 信息记录介质,记录装置,再现装置和再现方法
    • US08259556B2
    • 2012-09-04
    • US12745086
    • 2009-11-19
    • Tomoyasu TakaokaShigeru FurumiyaNaoyasu Miyagawa
    • Tomoyasu TakaokaShigeru FurumiyaNaoyasu Miyagawa
    • G11B7/24G11B7/00
    • G11B7/126G11B7/24038
    • An information recording medium, comprising N number (N is an integer fulfilling N≧3) of information layers on which information is recordable, and allowing information to be recorded on each of the information layers and allowing information recorded on each of the information layers to be reproduced by being irradiated with laser light. The N number of information layers include an N'th information layer, an (N−1)th information layer, an (N−2)th information layer, . . . a second information layer and a first information layer sequentially located from a laser light incidence side. A reflectance of the N'th information layer is RN, and a reflectance of an M'th information layer (M refers to every integer fulfilling N>M≧1) is RM. The laser light used to irradiate the N'th information layer for reproducing information recorded on the N'th information layer has an upper limit reproduction power PrNmax, and the laser light used to irradiate the M'th information layer for reproducing information recorded on the M'th information layer has an upper limit reproduction power PrMmax. The following expressions (1) and (2) are concurrently fulfilled: RN>RM   (1) PrNmax
    • 一种信息记录介质,包括可记录信息的信息层的N个数(N是满足N≥3的整数),并且允许将信息记录在每个信息层上并允许记录在每个信息层上的信息 通过用激光照射来再现。 N个信息层包括第N个信息层,第(N-1)个信息层,第(N-2)个信息层。 。 。 第二信息层和从激光入射侧依次定位的第一信息层。 第N个信息层的反射率为RN,第M个信息层(M为满足N>M≥1的每个整数)的反射率为RM。 用于照射第N信息层的用于再现记录在第N信息层上的信息的激光具有上限再现功率PrNmax,并且用于照射第M个信息层的激光用于再现记录在第N信息层上的信息 第M个信息层具有上限再现功率PrMmax。 同时满足下列表达式(1)和(2):RN> RM(1)PrNmax
    • 4. 发明申请
    • INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCING APPARATUS AND REPRODUCING METHOD
    • 信息记录介质,记录装置,再现装置和再现方法
    • US20100302921A1
    • 2010-12-02
    • US12745086
    • 2009-11-19
    • Tomoyasu TakaokaShigeru FurumiyaNaoyasu Miyagawa
    • Tomoyasu TakaokaShigeru FurumiyaNaoyasu Miyagawa
    • G11B19/00G11B7/26G11B7/00
    • G11B7/126G11B7/24038
    • An information recording medium, comprising N number (N is an integer fulfilling N≧3) of information layers on which information is recordable, and allowing information to be recorded on each of the information layers and allowing information recorded on each of the information layers to be reproduced by being irradiated with laser light. The N number of information layers include an N'th information layer, an (N−1)th information layer, an (N−2)th information layer, . . . a second information layer and a first information layer sequentially located from a laser light incidence side. A reflectance of the N'th information layer is RN, and a reflectance of an M'th information layer (M refers to every integer fulfilling N>M≧1) is RM. The laser light used to irradiate the N'th information layer for reproducing information recorded on the N'th information layer has an upper limit reproduction power PrNmax, and the laser light used to irradiate the M'th information layer for reproducing information recorded on the M'th information layer has an upper limit reproduction power PrMmax. The following expressions (1) and (2) are concurrently fulfilled: RN>RM   (1) PrNmax
    • 一种信息记录介质,包括可记录信息的信息层的N个数(N是满足N≥3的整数),并且允许将信息记录在每个信息层上并允许记录在每个信息层上的信息 通过用激光照射来再现。 N个信息层包括第N个信息层,第(N-1)个信息层,第(N-2)个信息层。 。 。 第二信息层和从激光入射侧依次定位的第一信息层。 第N个信息层的反射率为RN,第M个信息层(M为满足N>M≥1的每个整数)的反射率为RM。 用于照射第N信息层的用于再现记录在第N信息层上的信息的激光具有上限再现功率PrNmax,并且用于照射第M个信息层的激光用于再现记录在第N信息层上的信息 第M个信息层具有上限再现功率PrMmax。 同时满足下列表达式(1)和(2):RN> RM(1)PrNmax
    • 6. 发明申请
    • Method and device for recording information on optical information recording medium and the medium itself
    • 用于在光学信息记录介质和介质本身上记录信息的方法和装置
    • US20050117481A1
    • 2005-06-02
    • US10992364
    • 2004-11-19
    • Tetsuya AkiyamaNaoyasu Miyagawa
    • Tetsuya AkiyamaNaoyasu Miyagawa
    • G11B7/0045G11B7/00G11B7/125G11B15/087G11B5/09
    • G11B7/1267G11B2007/0013
    • A method for recording information on an optical information recording medium 1, 11 having a plurality of recording layers for recording, reproducing or erasing data by irradiating a laser beam from one side, includes a temporary pulse condition determination step (S502), a test area reflected light measurement step (S502), a final pulse condition determination step (S503-S506) and a recording execution step (S506). The temporary pulse condition determination step includes performing test recordings on a test recording layer that is at least one recording layer among a plurality of recording layers and determining a temporary pulse condition including a laser beam intensity. The test area reflected light measurement step includes measuring a test area reflected light level that is a reflected light level of the laser beam in an area for the test recording. The final pulse condition determination step includes correcting the temporary pulse condition in accordance with the measured test area reflected light level so as to determine a final pulse condition. The recording execution step includes recording data with the final pulse condition.
    • 一种用于在具有多个用于通过从一侧照射激光来记录,再现或擦除数据的记录层的光学信息记录介质1,11上记录信息的方法包括暂时脉冲条件确定步骤(S 502),测试 区域反射光测量步骤(S 502),最终脉冲条件确定步骤(S 503 -S606)和记录执行步骤(S506)。 临时脉冲条件确定步骤包括在多个记录层中的至少一个记录层的测试记录层上执行测试记录,并确定包括激光束强度的临时脉冲条件。 测试区域反射光测量步骤包括测量作为测试记录区域中的激光束的反射光水平的测试区域反射光水平。 最终脉冲条件确定步骤包括根据测量的测试区域反射光电平校正临时脉冲条件,以便确定最终脉冲条件。 记录执行步骤包括以最终脉冲条件记录数据。
    • 10. 发明授权
    • Optical information recording medium, method for manufacturing the same, and initialization device
    • 光信息记录介质,其制造方法和初始化装置
    • US07463575B2
    • 2008-12-09
    • US11463977
    • 2006-08-11
    • Tetsuya AkiyamaNaoyasu MiyagawaKenichi NishiuchiTakashi Nishihara
    • Tetsuya AkiyamaNaoyasu MiyagawaKenichi NishiuchiTakashi Nishihara
    • G11B7/26
    • G11B7/1369G11B7/1275G11B7/13925G11B7/14G11B7/24038G11B7/268G11B2007/0013
    • An optical information recording medium includes a plurality of recording layers, a reflectance of at least one of the plurality of the recording layers in a non-initialized state with respect to a light beam for initialization being smaller than a reflectance of the same in an initialized state with respect to the light beam for initialization. The recording layers are initialized by irradiating, among the plurality of recording layers, the recording layer positioned farther from a light beam irradiation side with the light beam prior to irradiating the recording layer positioned closer to the light beam irradiation side, so that the initialized recording layers have no initialization irregularities. In initialization, at a position at a same distance in a radial direction on the optical information recording medium, the recording layer positioned farther from a light beam irradiation side is irradiated with one light beam before the recording layer positioned closer to the light beam irradiation side is irradiated with another light beam so that the plurality of recording layers are initialized at the same time by a light beam projecting operation in which the light beams are focused at different positions. This ensures the initialization without irregularities within a short time.
    • 光学信息记录介质包括多个记录层,相对于初始化用光束,非初始化状态的多个记录层中的至少一个记录层的反射率小于初始化的光束的反射率 相对于光束进行初始化的状态。 通过在照射位于更靠近光束照射侧的记录层之前,在多个记录层之间照射位于离光束照射侧更远离光束的记录层,以便初始记录 层没有初始化不规则。 在初始化中,在光学信息记录介质上沿径向相同距离的位置,在距离光束照射侧更靠近的记录层之前,用离开光束照射侧的记录层照射一个光束 用另一光束照射,使得多个记录层通过其中光束聚焦在不同位置的光束投影操作同时被初始化。 这确保了在短时间内没有不规则的初始化。