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106 条记录 (耗时 0.021 秒)

    Optical disk unit capable of reducing tracking offset
    11.
    发明授权
    Optical disk unit capable of reducing tracking offset 失效
    能够减少跟踪偏移的光盘单元

    公开(公告)号：US06738325B2

    公开(公告)日：2004-05-18

    申请号：US10132029

    申请日：2002-04-24

    申请人： Akira Mashimo

    发明人： Akira Mashimo

    IPC分类号： G11B700

    CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0945

    摘要： An optical disk unit, which performs tracking control by generating a tracking error signal based on detection signals of reflected lights of a main light beam for recording and reproduction and sub light beams for tracking, includes a first tracking error generation part generating a first tracking error component from the detection signals of the reflected light of the main light beam of a read-power time or an erase-power time, a second tracking error generation part generating a second tracking error component from the detection signals of the reflected lights of the sub light beams of a write-power time, and a subtraction part obtaining the tracking error signal for a recording time by subtracting the second tracking error component from the first tracking error component.

    摘要翻译： 基于用于记录和再现的主光束的反射光的检测信号和用于跟踪的子光束产生跟踪误差信号执行跟踪控制的光盘单元包括：第一跟踪误差产生部分，产生第一跟踪误差 从主光束的反射光的检测信号中读取功率时间或擦除功率时间的第二跟踪误差产生部分，根据副光束的反射光的检测信号产生第二跟踪误差分量 写入功率时间的光束，以及通过从第一跟踪误差分量中减去第二跟踪误差分量来获得记录时间的跟踪误差信号的减法部分。

    Optical disc recording apparatus and medium
    12.
    发明授权
    Optical disc recording apparatus and medium 失效
    光盘记录装置和介质

    公开(公告)号：US06711108B2

    公开(公告)日：2004-03-23

    申请号：US10068227

    申请日：2002-02-06

    申请人： Akira Mashimo ,  Yasuhide Ishimori

    发明人： Akira Mashimo ,  Yasuhide Ishimori

    IPC分类号： G11B509

    CPC分类号： G11B7/126 ,  G11B7/00454 ,  G11B7/00557 ,  G11B7/006

    摘要： An optical recording apparatus comprises a means for calculating an optimum recording power, capable of varying a recording power to perform a recording process on a test recording area of the erasable optical disc, and calculating an optimum recording power according to signals obtained by reproducing the test recording area; and an a means for calculating an optimum erasing power from the optimum recording power and a coefficient corresponding to the optimum recording power. The optimum recording power and the optimum erasing power are used for recording the erasable optical disc. Thereby, even though the dispersion of the recording power becomes large, the erasing power is not greater than a certain range; therefore, the total of the recording power and the erasing power can be restrained and the degradation of the durability, that the optical disc can be repeatedly recorded, can be suppressed.

    摘要翻译： 一种光学记录装置，包括用于计算最佳记录功率的装置，其能够改变记录功率以对可擦除光盘的测试记录区域进行记录处理，并且根据通过再现测试获得的信号来计算最佳记录功率 记录区; 以及用于根据最佳记录功率和对应于最佳记录功率的系数计算最佳擦除功率的装置。 最佳记录功率和最佳擦除功率用于记录可擦除光盘。 因此，即使记录功率的分散变大，擦除功率也不大于一定范围; 因此，可以抑制记录功率和擦除功率的总和，并且可以抑制可重复记录光盘的耐久性的劣化。

    Branching filter having specific impedance and admittance characteristics
    14.
    发明授权
    Branching filter having specific impedance and admittance characteristics 失效
    具有特定阻抗和导纳特性的分支滤波器

    公开(公告)号：US5323127A

    公开(公告)日：1994-06-21

    申请号：US3837

    申请日：1993-01-11

    申请人： Tomokazu Komazaki ,  Katsuhiko Gunji ,  Norio Onishi ,  Akira Mashimo ,  Kouichi Ichikawa

    发明人： Tomokazu Komazaki ,  Katsuhiko Gunji ,  Norio Onishi ,  Akira Mashimo ,  Kouichi Ichikawa

    IPC分类号： H01P1/205 ,  H01P1/213 ,  H03H7/46

    CPC分类号： H03H7/46 ,  H01P1/2136

    摘要： A branching filter in which an input/output port, a first dielectric filter for use in transmission and a second dielectric filter for use in reception are coupled with each other through a branching filter circuit. The branching filter circuit includes a first line provided between the input/output port and an input port of the second dielectric filter, a second line provided between the input/output port and an output port of the first dielectric filter, and a third line provided between the input/output port and the ground. In the filter, conductor lines for use in connection between ports are used for the first and second lines.

    摘要翻译： 一种分路滤波器，其中输入/输出端口，用于传输的第一介质滤波器和用于接收的第二介质滤波器通过分路滤波器电路相互耦合。 分路滤波器电路包括设置在第二介质滤波器的输入/输出端口和输入端口之间的第一线路，设置在第一介质滤波器的输入/输出端口和输出端口之间的第二线路，以及提供的第三线路 在输入/输出端口和地之间。 在滤波器中，用于端口之间连接的导体线用于第一和第二线路。

    Dropout detecting apparatus
    15.
    发明授权
    Dropout detecting apparatus 失效
    压差检测装置

    公开(公告)号：US5126853A

    公开(公告)日：1992-06-30

    申请号：US425794

    申请日：1989-10-23

    申请人： Akira Mashimo ,  Masahiko Fukushima

    发明人： Akira Mashimo ,  Masahiko Fukushima

    IPC分类号： G11B20/06 ,  H04N5/94

    CPC分类号： H04N5/94

    摘要： A dropout detecting apparatus includes a high-frequency-range compensation circuit for emphasizing a signal component in a high-frequency-range of a reproduced high-frequency signal, a reference signal generating circuit for deriving a reference signal from the reproduced high-frequency signal. The reference signal has an inverse relationship to the reproduced high-frequency having the emphasized signal component supplied from the high-frequency-range compensation circuit. The apparatus further includes a pulse signal generating circuit for converting the reproduced high-frequency signal supplied from the high-frequency-range compensation circuit into a pulse signal on the basis of the reference signal supplied from the reference signal generating circuit, and a circuit for determining whether the reproduced high-frequency signal includes a dropout on the basis of a change in period of the pulse signal supplied from the pulse signal generating circuit and for outputting a dropout detection signal.

    摘要翻译： 一种压差检测装置，包括用于强调再现的高频信号的高频范围内的信号分量的高频范围补偿电路，用于从再现的高频信号导出参考信号的参考信号发生电路 。 参考信号与具有从高频范围补偿电路提供的强调信号分量的再现高频成反比关系。 该装置还包括脉冲信号发生电路，用于根据从参考信号发生电路提供的参考信号将从高频范围补偿电路提供的再现的高频信号转换为脉冲信号，以及用于 基于从脉冲信号发生电路提供的脉冲信号的周期的变化，确定再现的高频信号是否包括压差，并输出一个压差检测信号。

    Microstrip line type resonator
    16.
    发明授权
    Microstrip line type resonator 失效
    微带线型谐振器

    公开(公告)号：US5097237A

    公开(公告)日：1992-03-17

    申请号：US566532

    申请日：1990-08-10

    申请人： Tomokazu Komazaki ,  Katsuhiko Gunji ,  Norio Onishi ,  Ichiro Iwase ,  Akira Mashimo

    发明人： Tomokazu Komazaki ,  Katsuhiko Gunji ,  Norio Onishi ,  Ichiro Iwase ,  Akira Mashimo

    IPC分类号： H01P1/203 ,  H01P7/08

    CPC分类号： H01P1/20381 ,  H01P7/082

    摘要： A microstrip line type resonator includes a rectangular parallelapiped dielectric plate, and a conductive microstrip line disposed on a top surface of the dielectric plate. The microstrip line has opposite ends respectively spaced from front and rear edges of the dielectric plate. The resonator further includes a first grounding layer disposed on an entirety of the bottom surface of the dielectric plate, and a second grounding layer disposed an entirety of the front, rear and side surfaces of the dielectric plate. The first grounding layer is electrically connected to the second grounding layer at the edges of the bottom surface of the dielectric plate. The microstrip line type resonator is a 1/2 wavelength resonator.

    摘要翻译： 微带线型谐振器包括矩形平行电介质板和布置在电介质板的顶表面上的导电微带线。 微带线具有分别与电介质板的前边缘和后边缘间隔开的相对端。 谐振器还包括设置在电介质板的整个底表面上的第一接地层和设置在电介质板的整个前，后和侧表面的第二接地层。 第一接地层在电介质板的底表面的边缘处电连接到第二接地层。 微带线型谐振器是1/2波长谐振器。

    Distortion eliminating circuit
    18.
    发明授权
    Distortion eliminating circuit 失效
    失真消除电路

    公开(公告)号：US4958234A

    公开(公告)日：1990-09-18

    申请号：US259152

    申请日：1988-10-18

    申请人： Hirohisa Yamaguchi ,  Akira Mashimo

    发明人： Hirohisa Yamaguchi ,  Akira Mashimo

    IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B20/06 ,  H04N9/79

    CPC分类号： G11B7/004 ,  H04N9/7912

    摘要： A distortion eliminating circuit for eliminating a harmonic distortion from an input frequency modulated luminance signal comprises a comparator for producing a series of output pulses responsive to the input frequency modulated luminance signal by comparing the level of the frequency modulated luminance signal with a predetermined level, a filtering circuit for extracting a d.c. component from the series of output pulses by filtering out oscillating components from said output pulses, a detecting circuit for extracting a d.c. distortion component corresponding to the harmonic distortion in the input frequency modulated luminance signal by comparing the level of the d.c. component by a reference level, and a level adjusting circuit for adjusting the level of the input frequency modulated luminance signal by adding or subtracting the d.c. distortion component to the input frequency modulated luminance signal and for supplying the input frequency modulated luminance signal having a level now thus adjusted to the comparator.

    摘要翻译： 用于从输入调频亮度信号中消除谐波失真的失真消除电路包括：比较器，用于通过将调频亮度信号的电平与预定电平进行比较来产生响应输入调频亮度信号的一系列输出脉冲; 用于提取直流的滤波电路 通过滤出来自所述输出脉冲的振荡分量的一系列输出脉冲的分量，用于提取直流电压的检测电路。 通过比较直流电平的水平，输入调制亮度信号中的谐波失真对应的失真分量。 分量乘以参考电平;以及电平调整电路，用于通过加或减去直流电平来调节输入调频亮度信号的电平。 失真分量到输入调制亮度信号，并用于提供具有如此调整到比较器的电平的输入调频亮度信号。

    Information recording disc and information signal recording apparatus therefor
    19.
    发明授权
    Information recording disc and information signal recording apparatus therefor 失效
    信息记录盘及其信息信号记录装置

    公开(公告)号：US4802159A

    公开(公告)日：1989-01-31

    申请号：US917188

    申请日：1986-10-09

    申请人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

    发明人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

    IPC分类号： G11B27/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  H04N5/92 ,  H04N9/835 ,  G11B7/013 ,  H04N5/84 ,  H04N9/89

    CPC分类号： H04N9/8355 ,  G11B7/004 ,  G11B7/0938 ,  H04N5/9201

    摘要： An information recording disc has a control signal such as an address signal pre-recorded on a guide track which is pre-formed on the information recording disc at a position different from a track position where an information signal is to be recorded. An information signal recording apparatus for recording the information signal on such an information recording disc controls a rotation frequency of the information recording disc to a constant rotation frequency by locking a horizontal synchronizing signal within a composite video signal to edges of pulses reproduced from the guide track, and the information signal is recorded on the information recording disc so that a recording interval of the control signal is positioned within a vertical blanking period of the information signal at least including the composite video signal.

    摘要翻译： 信息记录盘具有诸如预先记录在导轨上的地址信号的控制信号，该导轨在信息记录盘上预先形成在与要记录信息信号的轨道位置不同的位置处。 用于在这种信息记录盘上记录信息信号的信息信号记录装置通过将复合视频信号内的水平同步信号锁定在从导轨再现的脉冲的边缘上来将信息记录盘的旋转频率控制在恒定的旋转频率 并且信息信号被记录在信息记录盘上，使得控制信号的记录间隔位于至少包括复合视频信号的信息信号的垂直消隐期内。