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    • 72. 发明申请
    • Information recording apparatus and information recording method
    • 信息记录装置和信息记录方法
    • US20050030871A1
    • 2005-02-10
    • US10827518
    • 2004-04-20
    • Masahiro KatoTatsuhiro Yone
    • Masahiro KatoTatsuhiro Yone
    • G11B7/0045G11B7/00G11B7/006G11B7/125
    • G11B7/126G11B7/00456G11B7/0062
    • An information recording apparatus irradiates a recording light, such as a laser light, on a recording medium, such as various kinds of optical discs, and records information. A recording pulse signal is generated based on a recording signal corresponding to the information to be recorded. The recording pulse signal is also called “strategy signal”, and the signal includes driving pulses which drive a light source for forming a recording mark on the recording medium. As to the recording light such as the laser light, the high frequency signal is superimposed for decreasing occurrence of noise due to mode hopping. The high frequency signal is generated as a digital signal, and the signal is added to the recording pulse signal to generate a driving pulse signal. Then, the light source is driven and the recording light is emitted. By generating the high frequency signal as the digital signal, it is possible to control a frequency and a phase thereof with high accuracy.
    • 信息记录装置将诸如激光的记录光照射在诸如各种光盘的记录介质上并记录信息。 基于与要记录的信息相对应的记录信号来生成记录脉冲信号。 记录脉冲信号也称为“策略信号”,该信号包括在记录介质上驱动用于形成记录标记的光源的驱动脉冲。 对于诸如激光的记录光,叠加高频信号以减少由于跳频引起的噪声的发生。 产生高频信号作为数字信号,并将该信号加到记录脉冲信号上以产生驱动脉冲信号。 然后,驱动光源并发射记录光。 通过产生作为数字信号的高频信号,可以高精度地控制频率和相位。
    • 74. 发明授权
    • Multilayer substrate and satellite broadcast reception apparatus
    • 多层基板和卫星广播接收装置
    • US06816028B2
    • 2004-11-09
    • US10401581
    • 2003-03-31
    • Masahiro Kato
    • Masahiro Kato
    • H03H500
    • H01P5/107
    • A multilayer substrate ensuring transmission loss as low as when one double-sided substrate is used, while reducing noise, and an LNB converter are provided. The multilayer substrate includes a four-layer substrate having pattern layers sandwiching dielectric layers therebetween. The surface pattern layer provided with a signal line of the microstrip line has a projecting portion. The pattern layer provided with a ground pattern corresponding to the signal line has a portion at least overlapping a root portion of the projecting portion as seen from the top and constituting a surface layer on the other side opposite to the root portion, with no other pattern layer interposed between the relevant portions.
    • 提供了一种多层基板,其确保了当使用一个双面基板时的传输损耗低,同时降低噪声,并且提供了LNB转换器。 多层基板包括具有将介电层夹在其间的图案层的四层基板。 设置有微带线的信号线的表面图案层具有突出部。 具有与信号线对应的接地图案的图案层具有至少与从顶部观察的突起部的根部重叠的部分,并且在与根部相反的另一侧上构成表层,而没有其他图案 介于相关部分之间的层。
    • 80. 发明授权
    • Pre-pit detector of optical recording medium
    • 光记录介质预坑检测器
    • US06545972B1
    • 2003-04-08
    • US09610690
    • 2000-07-07
    • Masahiro KatoMasayoshi Yoshida
    • Masahiro KatoMasayoshi Yoshida
    • G11B700
    • G11B7/005G11B7/0045G11B7/00745G11B7/08505
    • A pre-pit detector comprises an optical detector which receives a reflected beam of an optical beam irradiated to the write surface by first and second light reception surfaces, which are split light reception surfaces, to output first and second optical detection signals corresponding to reception light intensities of the respective first and second light reception surfaces and receives the reflected beam from a pre-pit track pairing up with an information write track to which the optical beam is irradiated, on the first light reception surface. The first optical detection signal is given with an amplification result by a greater gain than the second optical detection signal to supply the first and second optical detection signals to a subtractor which computes the difference between the first and second optical detection signals. The output signal of the subtractor is digitized to generate a pre-pit detection signal.
    • 预坑检测器包括:光检测器,其接收由作为分离的光接收表面的第一和第二光接收表面照射到写入表面的光束的反射光束,以输出对应于接收光的第一和第二光学检测信号 各个第一和第二光接收表面的强度,并且从第一光接收表面上接收来自与光束照射的信息写入轨迹配对的预凹陷轨道的反射光束。 第一光学检测信号具有比第二光学检测信号更大的增益的放大结果,以将第一和第二光学检测信号提供给计算第一和第二光学检测信号之间的差的减法器。 减法器的输出信号被数字化,以产生预凹坑检测信号。