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1. 发明授权

US06577565B1 Optical pickup for performing recording or reading operation on recording medium having prepits 有权
标题翻译：用于在具有预凹坑的记录介质上执行记录或读取操作的光学拾取器
公开(公告)号：US06577565B1
公开(公告)日：2003-06-10
申请号：US09348124
申请日：1999-07-02
申请人： Naoharu Yanagawa , Masayoshi Yoshida , Yoshitaka Shimoda
发明人： Naoharu Yanagawa , Masayoshi Yoshida , Yoshitaka Shimoda
IPC分类号： G11B7095
CPC分类号： G11B7/1356 , G11B7/005 , G11B7/0909
摘要： An optical pickup for reading information from a recording medium having a plurality of prepits or for recording information onto the recording medium is provided. The optical pickup includes: a light emitting device for emitting a light beam to the recording medium; a dividing device for dividing the light beam reflected by the recording medium into a first divided beam and a second divided beam; an astigmatism producing device for producing astigmatism in the first divided beam; a first light receiving device for receiving the first divided beam from the astigmatism producing device; and a second light receiving device for receiving the second divided beam from the dividing device.
摘要翻译：提供一种用于从具有多个预凹坑的记录介质读取信息或用于将信息记录到记录介质上的光学拾取器。光拾取器包括：用于向记录介质发射光束的发光装置; 用于将由记录介质反射的光束划分成第一分割光束和第二分割光束的分割装置; 用于在第一分割光束中产生像散的散光产生装置; 第一光接收装置，用于从散光产生装置接收第一划分光束; 以及用于从分割装置接收第二分割光束的第二光接收装置。

2. 发明授权

US06442115B1 Information recording apparatus 失效
标题翻译：信息记录装置
公开(公告)号：US06442115B1
公开(公告)日：2002-08-27
申请号：US09386338
申请日：1999-08-31
申请人： Yoshitaka Shimoda , Masayoshi Yoshida , Naoharu Yanagawa
发明人： Yoshitaka Shimoda , Masayoshi Yoshida , Naoharu Yanagawa
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/0045 , G11B19/28
摘要： An information recording apparatus (S) records record information onto an optical disc (1), which corresponds to a CLV (Constant Linear Velocity) method to keep a linear velocity of the optical disc constant when reproducing the record information from the optical disc. The information recording apparatus is provided with: an optical pickup (14) having a laser (14a) for irradiating a light beam (B) from the laser onto a record track of the optical disc and for detecting a reflected light from the optical disc; a rotation controlling device (11, 17 to 20) for rotation-controlling the optical disc to keep a rotation angular velocity of the optical disc constant when recording the record information onto the optical disc; and a laser drive controlling device (11, 15, 16) for obtaining an optimum value of a laser driving amount for the optical pickup in correspondence with a linear velocity of the record track of the rotation-controlled optical disc with respect to the optical pickup and for drive-controlling the laser by use of the obtained optimum value of the laser driving amount.
摘要翻译：信息记录装置（S）将记录信息记录到光盘（1）上，该记录信息对应于当从光盘再现记录信息时保持光盘的线速度恒定的CLV（恒定线速度）方法。信息记录装置具有：具有用于将来自激光的光束（B）照射到光盘的记录轨道上并用于检测来自光盘的反射光的激光器的光学拾取器（14）; 旋转控制装置（11,17至20），用于当将记录信息记录在光盘上时，旋转控制光盘以保持光盘的旋转角速度恒定; 以及激光驱动控制装置（11,15,16），用于根据旋转控制光盘的记录轨道相对于光学拾取器的线速度获得用于光学拾取器的激光驱动量的最佳值并且通过使用获得的激光驱动量的最佳值来驱动控制激光。

3. 发明授权

US06339581B1 Disc player having a prepit detecting circuit 失效
标题翻译：光盘播放器具有预坑检测电路
公开(公告)号：US06339581B1
公开(公告)日：2002-01-15
申请号：US09425178
申请日：1999-10-22
申请人： Masayoshi Yoshida , Yoshitaka Shimoda , Naoharu Yanagawa , Shinichi Nagahara
发明人： Masayoshi Yoshida , Yoshitaka Shimoda , Naoharu Yanagawa , Shinichi Nagahara
IPC分类号： G11B700
CPC分类号： G11B7/005 , G11B7/00745
摘要： A disc player having a prepit detecting circuit which can correctly detect prepits even if phases or amplitude levels of a plurality of read signals read out from a recording disc are deviated from each other. A phase difference between a first read signal and a second read signal read out by first and second reading elements arranged in two regions divided along the direction of recording tracks of a recording disc is detected. A first phase correction read signal is obtained by adjusting the phase of the first read signal by an amount according to the phase difference. A differential value between the first phase correction read signal and the second read signal is outputted as a prepit detection signal.
摘要翻译：即使从记录盘读出的多个读取信号的相位或幅度水平彼此偏离，也可以正确地检测预凹坑的预制坑检测电路。检测由沿着记录盘的记录轨道的方向划分的两个区域中排列的第一和第二读取元件读出的第一读取信号和第二读取信号之间的相位差。通过根据相位差调整第一读取信号的相位来获得第一相位校正读取信号。输出第一相位校正读取信号和第二读取信号之间的差分值作为预坑检测信号。

4. 发明授权

US06292448B1 Information recording apparatus 失效
标题翻译：信息记录装置
公开(公告)号：US06292448B1
公开(公告)日：2001-09-18
申请号：US09360903
申请日：1999-07-26
申请人： Masayoshi Yoshida , Yoshitaka Shimoda
发明人： Masayoshi Yoshida , Yoshitaka Shimoda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/24085
摘要： Before information is recorded onto an information record medium by irradiating a light beam, a test signal is recorded for each of a plurality of unit test record regions with a plurality of different record powers. Then, the test signal recorded in each of the unit test record regions is reproduced, and further an optimal record power for the light beam is selected on the basis of a condition of the reproduced test signal. The information recording apparatus is provided with: a re-writable memory device for storing power set values to obtain the plurality of different record powers respectively, in response to location information which identifies respective one of the unit test record regions; a recording device for recording the test signal in the test record region on the basis of a constant record clock signal; a location information generating device for generating the location information at a cycle corresponding to a record time for each of the unit test record regions; a record controlling device for reading out the power set value stored in the re-writable memory device in accordance with the generated location information and then outputting it to the recording device; a defect detecting device for detecting a defect in respective one of the unit test record regions, in which a recording operation is performed; and a power set value storing device for storing the power set value, which is read out in accordance with one location information when the defect is detected, into the re-writable memory device such that the stored power set value corresponds to another location information.
摘要翻译：在通过照射光束将信息记录到信息记录介质之前，针对具有多个不同记录功率的多个单元测试记录区域中的每一个记录测试信号。然后，记录在每个单元测试记录区域中的测试信号被再现，并且还根据再现的测试信号的条件选择光束的最佳记录功率。信息记录装置具有：响应于识别单元测试记录区域中的相应一个的位置信息，分别存储功率设定值以获得多个不同记录功率的可重写存储装置; 记录装置，用于根据恒定的记录时钟信号在测试记录区中记录测试信号; 位置信息生成装置，用于以对应于每个单位测试记录区域的记录时间的周期生成位置信息; 记录控制装置，用于根据生成的位置信息读出存储在可重写存储装置中的功率设定值，然后将其输出到记录装置; 用于检测执行记录操作的单元测试记录区域中的一个的缺陷的缺陷检测装置; 以及功率设定值存储装置，用于存储在检测到缺陷时根据一个位置信息读出的功率设定值，使得存储的功率设定值对应于另一个位置信息。

5. 发明授权

US06894955B1 Quick access information read and write devices 失效
标题翻译：快速访问信息读写设备
公开(公告)号：US06894955B1
公开(公告)日：2005-05-17
申请号：US09675059
申请日：2000-09-29
申请人： Yoshitaka Shimoda , Masayoshi Yoshida , Shinichi Nagahara , Tsuyoshi Hasebe , Motoji Nakamura
发明人： Yoshitaka Shimoda , Masayoshi Yoshida , Shinichi Nagahara , Tsuyoshi Hasebe , Motoji Nakamura
IPC分类号： G11B7/085 , G11B7/09 , G11B7/095 , G11B7/135 , G11B7/18
CPC分类号： G11B7/1353 , G11B7/08517 , G11B7/08529 , G11B7/08541 , G11B7/0903 , G11B7/094 , G11B7/0953 , G11B7/0956
摘要： There are provided an information write device and an information read device enabling to generate highly accurate contrast signals. When a main light spot Pc is located at the center of the a groove G, the light spot Pc and sub light spots Psa, Psb are each adapted to radiate a disc DSC such that the sub light spots Psa, Psb radiate positions displaced from the center of the land L. The reflected beams of light from the disc DSC caused by the radiation with the light spots Pc, Psa, Psb are detected to generate push-pull signals each corresponding to the light spots Pc, Psa, Psb, respectively, in accordance with each of the detected signals. Furthermore, a signal to be obtained by amplifying an addition signal, given by adding the push-pull signals each corresponding to the sub light spots Psa, Psb, with a predetermined amplification factor K/n, and a push-pull signal corresponding to the main light spot Pc are added to thereby generate a contrast signal.
摘要翻译：提供了一种能够产生高精度对比度信号的信息写入装置和信息读取装置。当主光斑Pc位于凹槽G的中心时，光斑Pc和次光斑Psa，Psb各自适于辐射盘DSC，使得副光斑Psa，Psb辐射位置从检测由具有光斑Pc，Psa，Psb的辐射引起的来自光盘DSC的反射光束，以产生分别对应于光点Pc，Psa，Psb的推挽信号，根据每个检测到的信号。此外，通过以预定的放大系数K / n加上每个与子光点Psa，Psb相对应的推挽信号给出的相加信号的放大而获得的信号和对应于添加主光点Pc，从而生成对比度信号。

6. 发明授权

US06728181B2 Code judging apparatus and method, record medium judging apparatus and method, and information recording apparatus and method 失效
标题翻译：代码判断装置和方法，记录介质判断装置和方法以及信息记录装置和方法
公开(公告)号：US06728181B2
公开(公告)日：2004-04-27
申请号：US09749177
申请日：2000-12-28
申请人： Yoshitaka Shimoda , Masayoshi Yoshida , Tsuyoshi Hasebe , Tetsuaki Kawahara
发明人： Yoshitaka Shimoda , Masayoshi Yoshida , Tsuyoshi Hasebe , Tetsuaki Kawahara
IPC分类号： G11B700
CPC分类号： G11B23/284 , G11B7/0037 , G11B7/00736 , G11B20/00094 , G11B20/0021 , G11B23/0042
摘要： A code judging apparatus is provided with: a detecting device (11) for optically detecting an information code including at least identification information to individually identify a writable record medium (DK), in which record information can be written, from the writable record medium to thereby output an output signal; a moving device (19) for moving the detecting device onto a set area, which is an area on the writable record medium where the information code is supposed to be recorded; and a judging device (19) for judging whether or not the information code is recorded on the writable record medium, in accordance with the output signal outputted from the detecting device moved on the set area.
摘要翻译：代码判断装置具有：检测装置（11），用于光学地检测包括至少标识信息的信息代码，以便将可记录信息可写入的可写记录介质（DK）从可写记录介质分别识别为从而输出输出信号; 移动装置（19），用于将检测装置移动到作为应记录信息码的可写记录介质上的区域的设定区域; 以及判断装置（19），用于根据在设定区域上移动的检测装置输出的输出信号来判断信息代码是否被记录在可写记录介质上。

7. 发明授权

US06603726B1 Pre-pit detection unit 失效
标题翻译：预坑检测单元
公开(公告)号：US06603726B1
公开(公告)日：2003-08-05
申请号：US09557308
申请日：2000-04-25
申请人： Masayoshi Yoshida , Yoshitaka Shimoda
发明人： Masayoshi Yoshida , Yoshitaka Shimoda
IPC分类号： G11B700
CPC分类号： G11B20/10009 , G11B7/0053 , G11B7/131 , G11B20/10027
摘要： A pre-pit detection unit having pre-pit detection circuits (600 and 700) respectively corresponding to beam intensity in mark and space periods that are provided in parallel on the output side of a push-pull circuit (500) for generating a pre-data signal. The pre-pit detection unit finally outputs the OR of the outputs of both pre-pit detection circuits as a pre-pit detection signal (l). An AGC circuit (601 and 701) for making the maximum amplitude of a radial push-pull signal (d) obtainable from said push-pull circuit coincide with a reference value is provided in the preceding stages of pre-pit detecting comparators (606 and 706) in the respective pre-pit detection circuits.
摘要翻译：一种预凹坑检测单元，具有分别对应于在推挽电路（500）的输出侧并联设置的标记和空间周期中的光束强度的预凹坑检测电路（600和700）数据信号。预坑检测单元最终将两个预坑检测电路的输出的OR作为预凹坑检测信号（l）输出。在前置凹坑检测比较器（606和6）中提供用于使可从所述推挽电路获得的径向推挽信号（d）的最大幅度与参考值一致的AGC电路（601和701） 706）。

8. 发明授权

US6137756A Information recording using technique for detecting erroneous recording 有权
标题翻译：用于检测错误记录的技术的信息记录
公开(公告)号：US6137756A
公开(公告)日：2000-10-24
申请号：US159859
申请日：1998-09-24
申请人： Masayoshi Yoshida , Yoshitaka Shimoda , Yuji Tawaragi
发明人： Masayoshi Yoshida , Yoshitaka Shimoda , Yuji Tawaragi
IPC分类号： G11B20/10 , G11B7/00 , G11B7/0045 , G11B7/007 , G11B19/04 , G11B20/18 , G11B27/10 , G11B27/19 , G11B27/24 , G11B27/30 , G11B27/36 , G11B5/09
CPC分类号： G11B27/24 , G11B19/04 , G11B20/1833 , G11B27/10 , G11B27/3027 , G11B27/36 , G11B2220/218 , G11B2220/2562 , G11B7/0045 , G11B7/007
摘要： Provided are a method and apparatus for detecting an occurrence of erroneous recording in recording information to be recorded into a DVD-R. The information consists of a plurality of ECC blocks each including a predetermined number of recording sectors. In the DVD-R, synchronizing information, accomplished by wobbling of groove tracks, and positional information, such as pre-pits, are previously recorded. Both the synchronizing information and the positional information are detected, then a synchronizing timing signal showing a time at which the synchronizing information is detected and a positional timing signal showing a time at which each ECC block is assigned to be recorded are produced. The synchronizing timing signal produced during an interval defined by the successive two positional timing signals is counted in number, and a state signal for estimating the occurrence of the erroneous recording is produced on comparison between the counted number and the predetermined number of the recording sectors. The method and apparatus are suitable for information recording method and apparatus.
摘要翻译：提供了一种用于检测要记录到DVD-R中的记录信息中的错误记录的发生的方法和装置。信息由包括预定数量的记录扇区的多个ECC块组成。在DVD-R中，预先记录了通过摆动凹槽轨道实现的同步信息和诸如预凹坑的位置信息。检测同步信息和位置信息，然后产生表示检测同步信息的时间的同步定时信号和表示分配每个ECC块的记录时间的位置定时信号。在由连续两个位置定时信号定义的间隔期间产生的同步定时信号以数量进行计数，并且在计数数与预定数量的记录扇区之间进行比较，产生用于估计错误记录的发生的状态信号。该方法和装置适用于信息记录方法和装置。

9. 发明授权

US06879771B1 Recording timing setting apparatus and information recording apparatus 失效
标题翻译：记录时间设定装置和信息记录装置
公开(公告)号：US06879771B1
公开(公告)日：2005-04-12
申请号：US09472504
申请日：1999-12-27
申请人： Masayoshi Yoshida , Yoshitaka Shimoda
发明人： Masayoshi Yoshida , Yoshitaka Shimoda
IPC分类号： G11B7/0037 , G11B7/0045 , G11B7/006 , G11B20/10 , G11B20/14 , G11B27/19 , G11B27/24 , G11B27/30 , H04N5/781 , H04N5/932
CPC分类号： G11B27/24 , G11B7/0037 , G11B7/0045 , G11B7/006 , G11B20/10 , G11B20/14 , G11B27/3027 , G11B2220/216 , G11B2220/2562
摘要： A recording timing setting apparatus for setting a recording start timing for recording first recording information onto a recording medium on which second recording information is previously recorded and on which a plurality of synchronization signals are recorded in advance. The second recording information includes a plurality of information units each including synchronization information. The recording timing setting apparatus includes: a first detecting device for detecting the plurality of synchronization signals; a second detecting device for detecting the synchronization information included in the second recording information; a generating device for generating a timing signal for predicting the detection timings of the plurality of synchronization signals, on the basis of the synchronization information detected by the second detecting device; and a timing control device for setting the recording start timing by using the timing signal.
摘要翻译：一种记录定时设置装置，用于将用于将第一记录信息记录到预先记录有第二记录信息的记录介质上并且预先记录有多个同步信号的记录开始定时。第二记录信息包括各自包括同步信息的多个信息单元。记录时序设定装置包括：第一检测装置，用于检测多个同步信号; 第二检测装置，用于检测包括在第二记录信息中的同步信息; 产生装置，用于根据由第二检测装置检测到的同步信息产生用于预测多个同步信号的检测定时的定时信号; 以及定时控制装置，用于通过使用定时信号来设定记录开始定时。

10. 发明授权

US06324136B1 Apparatus for and method of setting accurate recording time point 失效
标题翻译：设置准确记录时间点的设备和方法
公开(公告)号：US06324136B1
公开(公告)日：2001-11-27
申请号：US09270863
申请日：1999-03-17
申请人： Masayoshi Yoshida , Yoshitaka Shimoda
发明人： Masayoshi Yoshida , Yoshitaka Shimoda
IPC分类号： G11B700
CPC分类号： G11B27/3027 , G11B7/00375 , G11B7/0045 , G11B7/00718 , G11B27/24 , G11B2220/218 , G11B2220/2562
摘要： A recording time point setting method and apparatus are provided. The recording time point setting method is a method of setting a recording time point for recording an information piece into one of a plurality of predetermined areas on a recording medium on the basis of a plurality of marks. The marks are pre-recorded on the recording medium at predetermined intervals. The locations of the marks correspond to the locations of the predetermined areas, respectively. The locations of the predetermined areas are predetermined on the basis of a time length of the information piece. In this method, firstly, at least one of the marks is detected. Then, an expectation signal is generated on the basis of the time length of the information piece, and then, a time point at which an output of the expectation signal is started is synchronized with a time point at which the at least one of the marks is detected. The expectation signal is a signal for determining an expectation time point that one of the marks, except for the at least one of the marks already detected, is to be detected. Next, the expectation time point determined by the expectation signal is set as the recording time point.
摘要翻译：提供记录时间点设定方法和装置。记录时间点设定方法是根据多个标记将记录信息片的记录时间点设定在记录介质上的多个预定区域之一的方法。标记以预定间隔预先记录在记录介质上。标记的位置分别对应于预定区域的位置。基于信息片的时间长度来预先确定预定区域的位置。在该方法中，首先，检测到至少一个标记。然后，基于信息片的时间长度生成期望信号，然后，期望信号的输出开始的时间点与至少一个标记的时间点同步被检测到。期望信号是用于确定期望时间点的信号，除了检测到的已经检测到的至少一个标记之外，其中一个标记被检测。接下来，由期望信号确定的期望时间点被设定为记录时间点。

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