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    • 31. 发明申请
    • INFORMATION REPRODUCTION METHOD, INFORMATION RECORDING METHOD, AND INFORMATION RECORDING MEDIUM
    • 信息再现方法,信息记录方法和信息记录介质
    • US20120092974A1
    • 2012-04-19
    • US13378862
    • 2011-04-12
    • Isao KobayashiHarumitsu Miyashita
    • Isao KobayashiHarumitsu Miyashita
    • G11B7/005
    • G11B20/10009G11B7/0062G11B7/1267G11B20/10287G11B2220/2541G11B2220/2562
    • According to the present invention, a first error pattern caused by a shift of a bit relating to a recording mark or a space of a shortest length and a second error pattern caused by an edge shift of the recording mark are used. For each of a plurality of error patterns, a pattern shift obtained by normalizing a difference between a square of a Euclidean distance between the error pattern and a reproduction signal and a square of a Euclidean distance between a correct pattern and the reproduction signal, using a square of a Euclidean distance between the correct pattern and the error pattern is detected. Length and phase errors are calculated by a sum of, or a difference between, a first pattern shift amount obtained by normalization performed using the first error pattern and a second pattern shift amount obtained by normalization performed using the second error pattern.
    • 根据本发明,使用由与记录标记相关的位的移位引起的第一错误模式或由记录标记的边缘移位引起的最短长度的空间和第二错误模式。 对于多个误差图案中的每一个,通过使用以下方式归一化误差模式和再现信号之间的欧几里得距离的平方与欧氏距离的正方形之间的差异而获得的图案偏移, 检测正确模式与误差模式之间的欧氏距离的平方。 长度和相位误差通过使用第一误差图案进行的归一化所获得的第一图案偏移量和通过使用第二误差图案进行的归一化获得的第二图案偏移量之和或之差来计算。
    • 36. 发明申请
    • Optical Disc Recording Pulse Control Method, and Control Device and Optical Disc Device Employed Therein
    • 光盘记录脉冲控制方法,以及其中使用的控制装置和光盘装置
    • US20080205231A1
    • 2008-08-28
    • US11632861
    • 2005-07-21
    • Harumitsu MiyashitaTetsuya ShiharaYasumori Hino
    • Harumitsu MiyashitaTetsuya ShiharaYasumori Hino
    • G11B20/18G11B7/0045
    • G11B7/1267G11B7/00456G11B7/0062
    • There are problems that recording degradation happens, and an error occurs in reproduction unless appropriate recording pulse conditions are determined. A recording pulse controlling method according to the present invention is a recording pulse controlling method for adjusting recording pulses for recording information on a writable optical disc, which includes a mark length adjustment step and a mark position adjustment step. The mark length adjustment step is a step for adjusting a recording mark length adjustment parameter, and the recording mark length adjustment parameter is adjusted to have a value for forming a recording mark having a length closest to a predetermined recording mark length. The mark position adjustment step is a step for adjusting a recording mark position adjustment parameter after the mark length adjustment step, and the recording mark position adjustment parameter is adjusted to have a value for forming a recording mark at a position closest to a predetermined recording mark position.
    • 存在记录劣化发生的问题,并且除非确定适当的记录脉冲条件,否则在再现中发生错误。 根据本发明的记录脉冲控制方法是一种用于在包括标记长度调节步骤和标记位置调整步骤的可写入光盘上调节用于记录信息的记录脉冲的记录脉冲控制方法。 标记长度调整步骤是用于调整记录标记长度调整参数的步骤,并且将记录标记长度调节参数调整为具有用于形成具有最接近预定记录标记长度的长度的记录标记的值。 标记位置调整步骤是在标记长度调整步骤之后调整记录标记位置调整参数的步骤,并且将记录标记位置调节参数调节为具有在最接近预定记录标记的位置处形成记录标记的值 位置。