公开(公告)号：US20110243276A1

公开(公告)日：2011-10-06

申请号：US13159180

申请日：2011-06-13

申请人： Jun OGAWA ,  Takahiro Ichikura

发明人： Jun OGAWA ,  Takahiro Ichikura

IPC分类号： H04L27/22

CPC分类号： H04L27/14 ,  H04L25/03343

摘要： Positions of a group of points of code shift including a plurality of points of code shift and present in each code-shift site of a multi-valued FSK code are identified, a point of code shift correction amount including an amount of displacement between a center point of code shift centered among the group of points of code shift in a direction of time axis and each of the points of code shift is calculated based on the identified positions of the points of code shift, and the point of code shift is corrected on a time axis based on the calculated point of code shift correction amount.

摘要翻译： 识别包括在多值FSK码的每个代码位置中存在的多个代码点的代码位置组的位置，该代码偏移校正量包括中心位置之间的位移量 在时间轴的方向上的码组移位的中心点的码移动点，并且基于所识别的码移位置的位置来计算每个码移位点，并且对码移位点进行修正 基于所计算的代码偏移量校正量的时间轴。

公开(公告)号：US20090147665A1

公开(公告)日：2009-06-11

申请号：US11996015

申请日：2006-07-18

申请人： Takahiro Ichikura ,  Hiroyuki Yabuno

发明人： Takahiro Ichikura ,  Hiroyuki Yabuno

IPC分类号： G11B7/00

CPC分类号： G11B7/0037 ,  G11B7/00745 ,  G11B7/1267

摘要： When recording is carried out in a DVD-RAM, if at least one address mark could have been detected at the header section, after a test light emission for a laser power control is carried out at a GAP section, normal recording is carried out from GUARD1. Herein, if the delay time in the reproduced data would have increased, and if the head of the GAP section has been passed by at the timing when the AM4 is detected in a period during judging whether the fourth AM has been detected or not, it would not be possible to carry out a test light emission normally at the GAP section.In an optical disc recording device of the present invention, when any of the first to third address marks could have been detected, a test light emission is carried out at the GAP section as conventional, and normal recording is carried out from GUARD1 with controlling the laser powers on the basis of that result. When only AM4 could have been detected, the test light emission is not carried out and normal recording from GUARD1 is carried out.

摘要翻译： 当在DVD-RAM中进行记录时，如果在标题部分可以检测到至少一个地址标记，则在GAP部分执行用于激光功率控制的测试发光之后，正常记录从 GUARD1。 这里，如果再现数据中的延迟时间将增加，并且如果在判断是否已经检测到第四个AM的时间段期间在检测到AM4的时刻已经通过了GAP部分的头部，则 将无法在GAP部分正常进行测试发光。 在本发明的光盘记录装置中，当可以检测到第一至第三地址标记中的任何一个时，如GAS部分那样执行测试发光，并且从GUARD1进行正常记录，控制 激光功率在此结果的基础上。 当只能检测到AM4时，不进行测试发光，并执行GUARD1的正常记录。

公开(公告)号：US07898932B2

公开(公告)日：2011-03-01

申请号：US11996015

申请日：2006-07-18

申请人： Takahiro Ichikura ,  Hiroyuki Yabuno

发明人： Takahiro Ichikura ,  Hiroyuki Yabuno

IPC分类号： G11B7/00

CPC分类号： G11B7/0037 ,  G11B7/00745 ,  G11B7/1267

摘要： When recording is carried out in a DVD-RAM, if at least one address mark could have been detected at the header section, after a test light emission for a laser power control is carried out at a GAP section, normal recording is carried out from GUARD1. Herein, if the delay time in the reproduced data would have increased, and if the head of the GAP section has been passed by at the timing when the AM4 is detected in a period during judging whether the fourth AM has been detected or not, it would not be possible to carry out a test light emission normally at the GAP section. In an optical disc recording device of the present invention, when any of the first to third address marks could have been detected, a test light emission is carried out at the GAP section as conventional, and normal recording is carried out from GUARD1 with controlling the laser powers on the basis of that result. When only AM4 could have been detected, the test light emission is not carried out and normal recording from GUARD1 is carried out.

摘要翻译： 当在DVD-RAM中进行记录时，如果在标题部分可以检测到至少一个地址标记，则在GAP部分执行用于激光功率控制的测试发光之后，正常记录从 GUARD1。 这里，如果再现数据中的延迟时间将增加，并且如果在判断是否检测到第四个AM的时间段期间在检测到AM4的定时已经通过了GAP部分的头部，则 将无法在GAP部分正常进行测试发光。 在本发明的光盘记录装置中，当可以检测到第一至第三地址标记中的任何一个时，如GAS部分那样执行测试发光，并且从GUARD1进行正常记录，控制 激光功率在此结果的基础上。 当只能检测到AM4时，不进行测试发光，并执行GUARD1的正常记录。

公开(公告)号：US20100027398A1

公开(公告)日：2010-02-04

申请号：US12519938

申请日：2007-12-20

申请人： Takahiro Ichikura ,  Hideo Sakon ,  Yorikazu Takao ,  Daigo Senoo ,  Youichi Ogura

发明人： Takahiro Ichikura ,  Hideo Sakon ,  Yorikazu Takao ,  Daigo Senoo ,  Youichi Ogura

IPC分类号： G11B7/00

CPC分类号： G11B7/00458 ,  G11B7/00454 ,  G11B7/0053 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1274 ,  G11B2020/1287 ,  G11B2220/215 ,  G11B2220/2562

摘要： There is provided an optical disc device which can evaluate in a short time as to whether an optical disc is recorded with satisfying the standard or not.An optical disc device for measuring a recording deviation amount of data recorded on an optical disc on which physical addresses are previously provided, includes an address detection circuit which detects the physical address and outputs a physical address detection signal, a timer which is operated in synchronization with reproduced data from the optical disc, a recording deviation amount measurement circuit which measures the recording deviation amount of data recorded on the optical disc by using the physical address detection signal and the count value of the timer, a memory which stores the measured recording deviation amount, and a data transfer circuit which transfers the recording deviation amount to the memory.

摘要翻译： 提供了一种能够在短时间内评估光盘是否满足标准的光盘的光盘装置。 用于测量记录在预先提供了物理地址的光盘上的数据的记录偏差量的光盘装置包括检测物理地址并输出物理地址检测信号的地址检测电路，同步操作的定时器 来自光盘的再现数据，记录偏差量测量电路，其通过使用物理地址检测信号和计时器的计数值来测量记录在光盘上的数据的记录偏差量;存储器，其存储测量的记录偏差 以及将记录偏差量传送到存储器的数据传送电路。