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    • 3. 发明授权
    • Apparatus and method for recording/reproducing optical information, and data fetching by reference to optical information recording medium
    • 用于记录/再现光学信息的装置和方法,以及参考光学信息记录介质的数据取出
    • US08391119B2
    • 2013-03-05
    • US12600686
    • 2008-08-05
    • Manabu Katsuki
    • Manabu Katsuki
    • G11B7/00
    • G11B7/00736G03H1/2286G03H2001/186G03H2001/2289G03H2222/13G11B7/0065G11B7/127
    • Provided are an optical information recording/reproducing apparatus and method capable of managing a wavelength of a light source when information is recorded/reproduced by utilizing holography, and limiting a wavelength of an interference fringe in a medium, and an optical information recording medium. For information recording/reproducing relative to an optical information recording medium by a pickup, a wavelength detector circuit detects a reference wavelength recorded in a storage area of the optical information recording medium, in accordance with the detected reference wavelength, a controller adjusts a wavelength of a light source of the pickup to have an optimum wavelength, and if a temperature detected with a temperature sensor indicates a predetermined change, readjusts the wavelength of the light source of the pickup to have an optimum wavelength.
    • 提供了当通过利用全息术记录/再现信息并且限制介质中的干涉条纹的波长和光学信息记录介质时,能够管理光源的波长的光学信息记录/再现装置和方法。 为了通过拾取器相对于光学信息记录介质的信息记录/再现,波长检测器电路根据检测到的参考波长检测记录在光学信息记录介质的存储区域中的参考波长,控制器调整波长 拾取器的光源具有最佳波长,并且如果用温度传感器检测到的温度指示预定的变化,则将拾波器的光源的波长重新调整为具有最佳波长。
    • 5. 发明申请
    • Optical Disk Recording Apparatus and Optical Disk Recording Method
    • 光盘记录装置和光盘记录方法
    • US20080112289A1
    • 2008-05-15
    • US11940392
    • 2007-11-15
    • Koichiro NISHIMURAJunya IIZUKAManabu KatsukiTakakiyo Yasukawa
    • Koichiro NISHIMURAJunya IIZUKAManabu KatsukiTakakiyo Yasukawa
    • G11B7/004G11B20/10G11B20/18
    • G11B20/10009G11B7/00458G11B20/10055G11B20/18
    • An optical disk apparatus is provided that has a signal processing circuit for equalizing a signal so as to achieve predetermined equalization, in which interference between codes is permitted, by means of an adaptive equalization circuit or the like, and for performing binarization by means of a maximum likelihood decoding circuit in which interference is performed as a rule, and thereby achieves stabilized signal reproduction in a narrow-band transmission. When evaluating the quality of the recorded signal through the use of the recording parameter learning and the reproduction system such as recorded signal verification, the optical disk recording apparatus is capable of highly precisely evaluating the quality of the recorded signal by fixing a circuit characteristic after suspending the optimization operation of the adaptive equalization circuit or the like for optimizing the characteristic by the reproduced signal. An optical disk recording method is also provided.
    • 提供一种具有信号处理电路的光盘装置,该信号处理电路用于对信号进行均衡,以便通过自适应均衡电路等实现允许代码之间的干扰的预定均衡,并且借助于 通常执行干扰的最大似然解码电路,从而在窄带传输中实现稳定的信号再现。 通过使用记录参数学习和诸如记录信号验证的再现系统来评估记录信号的质量时,光盘记录装置能够通过固定暂停后的电路特性来高精度地评估记录信号的质量 用于通过再现信号优化特性的自适应均衡电路等的优化操作。 还提供了一种光盘记录方法。
    • 7. 发明申请
    • Wobble signal reproducing circuit
    • 摆动信号再现电路
    • US20070030769A1
    • 2007-02-08
    • US11546289
    • 2006-10-12
    • Kouichirou NishimuraKouichi HiroseManabu KatsukiToshifumi Takeuchi
    • Kouichirou NishimuraKouichi HiroseManabu KatsukiToshifumi Takeuchi
    • G11B7/00
    • G11B7/005G11B7/0053G11B7/0901G11B7/0941G11B7/0943G11B7/0948G11B2007/0006
    • The present invention has an object to stably reproduce wobble signals of all disks of CD-R/RW, DVD-R/RW and DVD-RAM by one wobble signal reproducing circuit. In the wobble signal reproducing circuit, an AGC (AUTOMATIC GAIN CONTROL) circuit for equating a push-pull circuit output of a wide range and an RF amplitude of an optical detector output of two systems obtained by push-pull, and an AGC (AUTOMATIC GAIN CONTROL) circuit for making a wobble amplitude uniform are provided with a function to hold a gain or to change over a response time constant, and at the time of reproduction of the DVD-R/RW, a land pre-pit region is detected by the push-pull output to hold AGC (AUTOMATIC GAIN CONTROL) or change over a response time constant. Besides, in an address information recording region (PID region) at the time of reproduction of the DVD-RAM, the AGC (AUTOMATIC GAIN CONTROL) is held or the response time constant is changed over.
    • 本发明的目的是通过一个摆动信号再现电路来稳定地再现CD-R / RW,DVD-R / RW和DVD-RAM的所有磁盘的摆动信号。 在摆动信号再现电路中,用于将宽范围的推挽电路输出与通过推挽获得的两个系统的光检测器输出的RF幅度和AGC(AUTOMATIC)之间进行等效的AGC(自动增益控制)电路 提供摆动幅度均匀的增益控制电路具有保持增益或改变响应时间常数的功能,并且在再现DVD-R / RW时,检测到纹间预制凹坑区域 通过推挽输出保持AGC(自动增益控制)或更改响应时间常数。 此外,在再现DVD-RAM时的地址信息记录区域(PID区域)中,保持AGC(自动增益控制)或者改变响应时间常数。
    • 8. 发明授权
    • High-definition imaging device, and apparatuses for recording and
playing back high-definition picture information
    • 高分辨率成像装置以及用于记录和再现高分辨率图像信息的装置
    • US5374955A
    • 1994-12-20
    • US160806
    • 1993-12-03
    • Takashi FuruhataNobuo AzumaHiroki MizosoeManabu Katsuki
    • Takashi FuruhataNobuo AzumaHiroki MizosoeManabu Katsuki
    • H04N9/04H04N9/09
    • H04N9/045Y10S358/906
    • Solid-state imaging elements each having a smaller number of pixels are employed to realize an imaging device for taking a high-definition picture which is four or more times larger in the number of pixels than each of the solid-state imaging elements, and also an apparatus for recording/playing back (or transmitting) the high-definition picture. A two-dimensional space which includes, at least, nH spatial sampling points in a horizontal direction and nV spatial sampling points (nV lines) in a vertical direction, totaling (nH.times.nV) spatial sampling points, is imaged under the condition that light is sensed at, at most, 1/2 of the sampling points of the two-dimensional space. Thus, the imaging device delivers as its output a video signal containing effective pixel information items which correspond to the light-sensed sampling points and which are, at most, (nH.times.nV)/2 in terms of the number of pixels.
    • 采用具有较少像素数的固态成像元件来实现用于拍摄高于每个固态成像元件的像素数量的四倍或更多倍的高分辨率图像的成像装置,并且还 用于记录/播放(或发送)高分辨率图像的装置。 至少在水平方向上包括nH个空间采样点和垂直方向上的nV空间采样点(nV线)的二维空间(nHxnV)空间采样点在感测光的条件下被成像 最多在二维空间的采样点的1/2。 因此,成像装置输出视频信号,该视频信号包含对应于光感测采样点的有效像素信息项,并且对于像素数目至多为(nH×nV)/ 2。
    • 9. 发明申请
    • OPTICAL DISK APPARATUS, INFORMATION RECORDING METHOD, SIGNAL PROCESSING LSI, AND LASER DRIVER
    • 光盘设备,信息记录方法,信号处理LSI和激光驱动器
    • US20090310458A1
    • 2009-12-17
    • US12465770
    • 2009-05-14
    • Koichiro NishimuraMasato SomaToshifumi TakeuchiManabu KatsukiYukinobu Tada
    • Koichiro NishimuraMasato SomaToshifumi TakeuchiManabu KatsukiYukinobu Tada
    • G11B7/0045
    • G11B7/12G11B7/00456G11B20/10009G11B20/10481G11B2220/2541G11B2220/2562
    • The present invention aims to, when recording pulse information are transmitted to a laser driver lying over a pickup through an optical disk, reduce the number of transmission paths or lines from a conventional transmission method and avoid degradation of recording performance due to transmission path characteristics upon fastening of a recording speed thereby to provide stable recording performance at high-speed recording. The invention of the present application reduces the number of transmission signals by encoding multi-level laser pulse information transmitted by the laser driver. Further, gray codes are used for encoding to reduce constraints of skew between bits. Furthermore, encoding is executed using each state transition and the state transitions are switched according to each recording mark and space, thereby reducing the occurrence of a short pulse on each transmission path. In addition, the presence or absence of the encoding is switched to enable signal transmission, thereby making it possible to make compatible adaptation to complex laser pulse information and adaptation to high-speed recording.
    • 本发明的目的在于,当通过光盘将记录脉冲信息发送到位于拾取器上的激光驱动器时,从传统的传输方法减少传输路径或线路的数量,并且避免由于传输路径特性导致的记录性能的降低 紧固记录速度,从而在高速记录时提供稳定的记录性能。 本申请的发明通过对由激光驱动器发送的多级激光脉冲信息进行编码来减少发送信号的数量。 此外,灰色代码用于编码以减少位之间的偏斜的约束。 此外,使用每个状态转换执行编码,并且根据每个记录标记和空间切换状态转换,从而减少每个传输路径上的短脉冲的发生。 此外,编码的存在或不存在被切换以使得能够进行信号传输,从而使得可以对复杂的激光脉冲信息进行兼容的适应并适应于高速记录。