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1.发明授权公开(公告)号：US07408852B2
公开(公告)日：2008-08-05
申请号：US11698530
申请日：2007-01-26
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: G11B5/09
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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2.发明申请公开(公告)号：US20070127342A1
公开(公告)日：2007-06-07
申请号：US11698396
申请日：2007-01-26
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: G11B7/0045
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an-optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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3.发明申请公开(公告)号：US20070177477A1
公开(公告)日：2007-08-02
申请号：US11698530
申请日：2007-01-26
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: G11B7/0045
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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4.发明申请公开(公告)号：US20050207310A1
公开(公告)日：2005-09-22
申请号：US11132957
申请日：2005-05-19
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/007 , G11B7/085 , G11B7/125 , G11B7/126 , G11B7/24 , G11B7/243 , G11B20/12 , G11B20/14 , G11B27/034 , G11B27/036 , G11B27/19 , G11B27/24 , G11B27/30
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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5.发明授权公开(公告)号：US07561502B2
公开(公告)日：2009-07-14
申请号：US11698396
申请日：2007-01-26
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: G11B20/10
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度的任何一个，当约780nm的记录光时记录信号的调制m11 在波长上通过NA = 0.5或0.55的光学系统照射记录层是60-80％。 以1倍速度检索时记录信号的眼图的反射率的最高水平Rtop为15-25％，以1倍速度检索时的标记和标记间隔的单独长度的抖动为 35 ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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Patent Agency Ranking
6.发明授权公开(公告)号：US07452582B1
公开(公告)日：2008-11-18
申请号：US09573319
申请日：2000-05-18
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: B32B3/02
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2–1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60–80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15–25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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公开(公告)号：US6004646A
公开(公告)日：1999-12-21
申请号：US48042
申请日：1998-03-26
Applicant: Takashi Ohno , Masao Komatsu , Masae Kubo , Masaaki Mizuno , Natsuko Nobukuni , Michikazu Horie , Haruo Kunitomo
Inventor： Takashi Ohno , Masao Komatsu , Masae Kubo , Masaaki Mizuno , Natsuko Nobukuni , Michikazu Horie , Haruo Kunitomo
IPC: G11B7/0045 , G11B7/005 , G11B7/0055 , G11B7/006 , G11B7/007 , G11B7/125 , G11B7/24 , G11B7/24062 , G11B7/24067 , G11B7/24079 , G11B7/243 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B7/2595 , B32B3/00
CPC classification number: G11B7/259 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/126 , G11B7/24062 , G11B7/24067 , G11B7/243 , G11B7/258 , G11B2007/24304 , G11B2007/24308 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316 , G11B7/0051 , G11B7/0062 , G11B7/007 , G11B7/00718 , G11B7/24079 , G11B7/2585 , G11B7/2595 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
Abstract: An optical information recording medium for recording, retrieving and erasing mark length-modulated amorphous marks, which comprises a substrate, and a lower protective layer, a phase-change recording layer, an upper protective layer and a reflective layer having a thickness of from 40 to 300 nm and a volume resistivity of from 20 to 150 n.OMEGA..multidot.m, formed in this sequence on the substrate.
Abstract translation: 一种用于记录，检索和擦除标记长度调制的非晶标记的光学信息记录介质，包括基底和下保护层，相变记录层，上保护层和厚度为40埃的反射层 至300nm，体积电阻率为20〜150nm，OMEGA xm，以该顺序形成在基板上。
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公开(公告)号：US07345977B2
公开(公告)日：2008-03-18
申请号：US11132957
申请日：2005-05-19
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: G11B7/00
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2–1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60–80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15–25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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公开(公告)号：US07333414B2
公开(公告)日：2008-02-19
申请号：US10866216
申请日：2004-06-10
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
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10.发明授权公开(公告)号：US07027371B2
公开(公告)日：2006-04-11
申请号：US10756871
申请日：2004-01-13
Applicant: Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
Inventor： Natsuko Nobukuni , Takashi Ohno , Masae Kubo , Michikazu Horie
IPC: H04N15/52
CPC classification number: G11B27/036 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/0062 , G11B7/007 , G11B7/00736 , G11B7/0079 , G11B7/08517 , G11B7/08541 , G11B7/126 , G11B7/24035 , G11B7/24082 , G11B7/243 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B20/1254 , G11B20/1258 , G11B20/1426 , G11B27/034 , G11B27/24 , G11B27/3027 , G11B27/3063 , G11B2007/24314 , G11B2007/24316 , G11B2020/10898 , G11B2020/1269 , G11B2020/1287 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2545 , Y10T428/21
Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2–1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60–80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15–25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。
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