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1. 发明授权

US06791797B2 Cylindrical magnetic recording medium and method for manufacturing the same 失效
标题翻译：圆柱磁记录介质及其制造方法
公开(公告)号：US06791797B2
公开(公告)日：2004-09-14
申请号：US10382138
申请日：2003-03-05
申请人： Tsatsuya Saito , Tohru Den
发明人： Tsatsuya Saito , Tohru Den
IPC分类号： G11B576
CPC分类号： G11B5/855
摘要： A magnetic recording medium includes a cylindrical substrate and pores embedded with a magnetic substance that are provided on the outer circumferential surface of the cylindrical substrate and aligned in tracks that are in parallel with one another along the center axis of the cylindrical substrate. The tracks have as their center the center axis of the cylindrical substrate, and form circular orbits defined by planes perpendicular to the center axis. Alternatively, the tracks are in a spiral orbit or in spiral orbits whose center is the center axis of the cylindrical substrate. The pores at intersections of vertical and horizontal rows are aligned in quadrilaterals such as squares, rectangles or rhombi.
摘要翻译：磁记录介质包括圆柱形基板和嵌入有磁性物质的孔，其设置在圆柱形基板的外圆周表面上并且沿着圆柱形基板的中心轴线彼此平行的轨道排列。轨道以圆柱形基板的中心轴为中心，并形成由垂直于中心轴线的平面限定的圆轨道。或者，轨道是螺旋轨道或螺旋轨道，其中心是圆柱形基底的中心轴线。垂直和水平行的交点处的孔被排列成四边形，例如正方形，矩形或菱形。

2. 发明授权

US06510117B2 Writing strategy for CD-RW 失效
标题翻译： CD-RW的写作策略
公开(公告)号：US06510117B2
公开(公告)日：2003-01-21
申请号：US09755063
申请日：2001-01-08
申请人： Yung-Yu Chang
发明人： Yung-Yu Chang
IPC分类号： G11B576
CPC分类号： G11B7/126 , G11B7/0045
摘要： An improved writing strategy for constant angular velocity writing of CD-RW (compact disk-rewritable media) uses similar strategy as the constant linear velocity writing mode. The writing strategy includes the steps of dividing the compact disk into annular regions, setting a laser duty ratio for one of the regions, setting a laser write pulse duration to establish the laser duty ratio, and setting the laser duty ratios of the remaining annular regions using the same laser write pulse duration in each region. If the writing strategy results in unacceptable performance, as by laser write jitter being out of tolerance, the laser write pulse duration may be slightly modified in selected areas to acquire the desired performance level.
摘要翻译： CD-RW（光盘可重写介质）的恒定角速度写入的改进写入策略使用与恒定线速度写入模式类似的策略。写入策略包括以下步骤：将光盘分割成环形区域，设置一个区域的激光占空比，设置激光写入脉冲持续时间以建立激光器占空比，以及设置剩余环形区域的激光占空比在每个区域使用相同的激光写入脉冲持续时间。如果写入策略导致不可接受的性能，由于激光写入抖动超出公差，激光写入脉冲持续时间可能会在所选区域稍微修改，以获得所需的性能水平。

3. 发明授权

US06377533B1 Recording device utilizing inter-symbol interference 失效
标题翻译：利用符号间干扰的记录装置
公开(公告)号：US06377533B1
公开(公告)日：2002-04-23
申请号：US09743266
申请日：2001-01-08
申请人： Yoshihiro Hori , Masakazu Taguchi
发明人： Yoshihiro Hori , Masakazu Taguchi
IPC分类号： G11B576
CPC分类号： G11B20/14 , G11B20/1217 , G11B2020/1221 , G11B2020/1298 , G11B2220/2525
摘要： A recording device according to the present invention has a function (202, 206, 207) of dividing precoded record data into data blocks of a prescribed length to adjust to a magneto-optical disk (3) and adding an intrinsic pattern before and after the data blocks. As the intrinsic pattern, a pattern which reduces a decoding error of maximum likelihood decoding at an end of each data block is used. Therefore, even when data is inserted after preceding, code correlation of a precoded signal can be maintained at a location where division is performed.
摘要翻译：根据本发明的记录装置具有将预编码的记录数据划分成规定长度的数据块的功能（202,206,207），以调整到磁光盘（3），并且在数据块。作为本征模式，使用减少每个数据块的最后的最大似然解码的解码误差的模式。因此，即使在前述之后插入数据，也可以在执行划分的位置维持预编码信号的码相关。

4. 发明授权

US06836456B2 Information reproducing apparatus 有权
标题翻译：信息重放装置
公开(公告)号：US06836456B2
公开(公告)日：2004-12-28
申请号：US09903566
申请日：2001-07-13
申请人： Junichiro Tonami
发明人： Junichiro Tonami
IPC分类号： G11B576
CPC分类号： G11B20/10083 , G11B7/005 , G11B20/10009 , G11B20/10055 , G11B20/10111 , G11B20/22
摘要： A first signal is read from a first track of a recording medium. A second signal is read from a second track of the recording medium which neighbors the first track. A filter processes the second signal into a filtering-resultant signal according to a controllable filtering characteristic. A first subtracter operates for subtracting the filtering-resultant signal from the first signal to generate a subtraction-resultant signal. A peak detector generates peak-point information representing a timing at which the level represented by the first signal peaks. A temporary decision circuit implements a temporary decision about the subtraction-resultant signal. A second subtracter generates an error signal indicative of a difference between the subtraction-resultant signal and a signal representative of the result of the temporary decision at a timing equal to the timing represented by the peak-point information. The filtering characteristic of the filter is controlled in response to the error signal.
摘要翻译：从记录介质的第一轨道读取第一信号。从与第一轨道相邻的记录介质的第二轨道读取第二信号。滤波器根据可控滤波特性将第二信号处理成滤波结果信号。第一减法器用于从第一信号中减去滤波结果信号以产生减法结果信号。峰值检测器产生表示由第一信号峰值表示的电平的定时的峰值点信息。临时判定电路对减法结果信号进行临时判定。第二减法器在等于由峰值点信息表示的定时的定时产生指示减法结果信号和表示临时判定结果的信号之间的差的误差信号。滤波器的滤波特性根据误差信号进行控制。

5. 发明授权

US06771579B2 Optical recording method and optical recording medium 有权
标题翻译：光记录方法和光记录介质
公开(公告)号：US06771579B2
公开(公告)日：2004-08-03
申请号：US09942566
申请日：2001-08-31
申请人： Yuki Suzuki
发明人： Yuki Suzuki
IPC分类号： G11B576
CPC分类号： G11B7/00456 , G11B7/24079
摘要： An optical recording method for an optical recording medium having a recording layer containing an organic colorant on a transparent substrate, which comprises applying a recording laser beam divided into n−2 (wherein n is an integer of at least 2) pulses (or into 1 pulse when n is 2), to the optical recording medium, to form a mark having a recording data of nT (wherein T is the reference clock period), wherein the length of the forefront pulse is at least 1.7T and at most 2.4T, and the lengths of the second and subsequent pulses (multi-pulses) are at least 0.7T and less than 1.0T.
摘要翻译：一种用于光学记录介质的光学记录方法，该光学记录介质具有在透明基板上含有有机着色剂的记录层，该方法包括：施加划分为n-2（其中n是至少为2的整数）的记录激光束 n为2时的脉冲）到光记录介质，以形成具有nT记录数据（其中T是参考时钟周期）的标记，其中前端脉冲的长度为至少1.7T且至多2.4T ，并且第二和后续脉冲（多脉冲）的长度至少为0.7T且小于1.0T。

6. 发明授权

US06611485B2 Apparatus and method for correcting asymmetry of optical disk reproducing system 失效
公开(公告)号：US06611485B2
公开(公告)日：2003-08-26
申请号：US09902311
申请日：2001-07-10
申请人： Je-Kook Kim , Young-Wook Jang , Suk-Jung Lee
发明人： Je-Kook Kim , Young-Wook Jang , Suk-Jung Lee
IPC分类号： G11B576
CPC分类号： G11B20/10009 , G11B7/005
摘要： In an apparatus and a method for correcting asymmetry in an optical disk reproduction system, an analog RF signal is received from an optical diode and an asymmetry-corrected signal is output as a digital EFM signal. The apparatus includes envelope detectors for detecting upper and lower envelopes of the RF signal, a level controller for controlling the level of the sum of the upper envelope and the lower envelope and for outputting signal having the controlled level, and a comparator for comparing the level of the signal output from the level controller with the level of the RF signal and for outputting the comparison result as the digital EFM signal.

7. 发明授权

US06480452B2 Information recording medium, information recording method and information recording apparatus 有权
公开(公告)号：US06480452B2
公开(公告)日：2002-11-12
申请号：US10105252
申请日：2002-03-26
申请人： Yasushi Miyauchi , Motoyasu Terao , Akemi Hirotsune , Hiroyuki Minemura , Harukazu Miyamoto
发明人： Yasushi Miyauchi , Motoyasu Terao , Akemi Hirotsune , Hiroyuki Minemura , Harukazu Miyamoto
IPC分类号： G11B576
CPC分类号： G11B7/126 , G11B7/00454 , G11B7/006 , G11B7/00745 , G11B7/013 , G11B7/24 , G11B20/1217 , G11B2020/10898 , G11B2020/1232 , G11B2020/1277 , G11B2020/1287 , G11B2020/1288 , G11B2020/1298 , G11B2220/216 , G11B2220/2537
摘要： A recording medium having a dummy signal area on at least one side of a recording area is used and information is recorded with a dummy signal added to at least one of the leading and trailing sides in the recorded information signal. The user data area remains unaffected by repeated overwriting so that recorded user data is reproduced correctly. In particular, the wave form distortion caused by fluidization of a recording film remains at the dummy signal area and does not affect the user data area, so that the reproduction of the target information (user data) is assured.

8. 发明授权

US06426930B2 Information recording method and information recording apparatus therefor 失效
标题翻译：信息记录方法及其信息记录装置
公开(公告)号：US06426930B2
公开(公告)日：2002-07-30
申请号：US09774155
申请日：2001-01-30
申请人： Tsutomu Tanaka , Masakazu Taguchi , Takuya Kamimura
发明人： Tsutomu Tanaka , Masakazu Taguchi , Takuya Kamimura
IPC分类号： G11B576
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/00454 , G11B11/10528 , G11B11/1053 , G11B11/10595
摘要： An information recording method and an apparatus therefor, wherein a recording compensation controlling unit 1 receives data to be recorded and determines whether a pulse timing adjustment is to be performed or not, and instructs an APC 3 to adjust the timing thereby to advance the pulse start timing of laser light and/or to delay the pulse termination timing when the pulse timing adjustment is to be performed. The recording compensation controlling unit 1 determines the pulse timing adjustment corresponding to the presence or absence of a predetermined “space, record mark”, whereby the positional shift quantity of leading and trailing edges is reduced even for the marks having a fine dimension, and the jitter is reduced.
摘要翻译：一种信息记录方法及其装置，其中记录补偿控制单元1接收要记录的数据，并确定是否执行脉冲定时调整，并指示APC 3调整定时从而使脉冲启动当执行脉冲定时调整时，激光的定时和/或延迟脉冲终止定时。记录补偿控制单元1确定与存在或不存在预定“空间，记录标记”相对应的脉冲定时调整，由此即使对于具有精细尺寸的标记也减少前缘和后缘的位置偏移量，并且抖动减小。

9. 发明授权

US06256277B1 Information recording apparatus having controlled recording energy generation circuit 有权
标题翻译：具有受控记录能量生成电路的信息记录装置
公开(公告)号：US06256277B1
公开(公告)日：2001-07-03
申请号：US09206985
申请日：1998-12-08
申请人： Hideki Saga , Hirofumi Sukeda
发明人： Hideki Saga , Hirofumi Sukeda
IPC分类号： G11B576
CPC分类号： G11B7/126 , G11B7/00454 , G11B11/10506 , G11B11/1053 , G11B11/10595 , G11B20/10
摘要： An information recording apparatus for injecting an energy beam into a recording medium to form locally a region different in physical properties from a non-recording region to thereby record information, has a drive for driving an energy generation source for changing the number of injected energy pulses in a mark forming period in accordance with the mark length so that the interval between arbitrary two points of the change of injected power level at the time of information recording is substantially set to be longer than a half of a detection window width in order to make it easy to drive a recording energy generation source to thereby form said mark accurately and speedily and, at the same time, in order to secure a sufficient time required for cooling the recording medium.
摘要翻译：一种信息记录装置，用于将能量束注入到记录介质中以在局部形成与非记录区域不同的物理区域，从而记录信息，具有驱动用于改变喷射能量脉冲数的能量产生源的驱动装置在标记形成期间，根据标记长度，使信息记录时的注入功率电平变化的任意两点之间的间隔大致设定为长于检测窗宽度的一半，以便使可以容易地驱动记录能量产生源，从而准确且快速地形成所述标记，同时，为了确保冷却记录介质所需的足够的时间。

10. 发明授权

US06192016B1 Data recovery apparatus and method for optical disk reproduction systems 有权
标题翻译：光盘再现系统的数据恢复装置及方法
公开(公告)号：US06192016B1
公开(公告)日：2001-02-20
申请号：US09187626
申请日：1998-11-06
申请人： Il-kwon Kim
发明人： Il-kwon Kim
IPC分类号： G11B576
CPC分类号： G11B20/10009 , G11B7/005
摘要： In a data recovery apparatus and method for an optical disk reproduction system, a technique for digital recovery of data from an analog radio frequency (RF) signal is provided. An analog-to-digital converter (ADC) converts an analog radio frequency (RF) signal into a digital signal in response to a reference clock signal. A first adder combines an asymmetry error level to the digital RF signal. An adaptive digital equalizer digitally controls the level of the result added by the first adder, in response to a control signal. A digital level detector calculates the asymmetry error amount using the result added by the first adder, and outputs the control signal according to the output of the adaptive digital equalizer and predetermined coefficients. A viterbi decoder decodes the output of the adaptive digital equalizer into a bit train. A digital edge detector calculates the accuracy of sampling by the analog-to-digital converter, using the result added by the first adder, and outputs phase and frequency control signals according to the calculated accuracy. A reference signal generator outputs the reference clock signal having a frequency which varies in response to the phase and frequency control signals. Thus, data can be accurately recovered.
摘要翻译：在用于光盘再现系统的数据恢复装置和方法中，提供了一种用于从模拟射频（RF）信号数字恢复数据的技术。模拟 - 数字转换器（ADC）响应于参考时钟信号将模拟射频（RF）信号转换成数字信号。第一加法器将不对称误差电平与数字RF信号相结合。自适应数字均衡器响应于控制信号数字地控制由第一加法器添加的结果的电平。数字电平检测器使用由第一加法器相加的结果计算不对称误差量，并根据自适应数字均衡器的输出和预定系数输出控制信号。维特比解码器将自适应数字均衡器的输出解码成位列。数字边沿检测器使用第一加法器加上的结果计算模数转换器的采样精度，并根据计算的精度输出相位和频率控制信号。参考信号发生器输出具有响应于相位和频率控制信号而变化的频率的参考时钟信号。因此，可以准确地恢复数据。

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