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1. 发明授权

US4525828A Optical magnetic recording device 失效
标题翻译：光磁记录装置
公开(公告)号：US4525828A
公开(公告)日：1985-06-25
申请号：US359808
申请日：1982-03-19
申请人： Yasushi Higashiyama , Shu Chiba , Norikazu Sawazaki
发明人： Yasushi Higashiyama , Shu Chiba , Norikazu Sawazaki
IPC分类号： G11B5/02 , G11B5/008 , G11B5/56 , G11B5/86 , G11B7/00 , G11B7/003 , G11B7/004 , G11B7/12 , G11B11/14
CPC分类号： G11B5/56 , G11B5/0086 , G11B5/86 , G11B7/0031
摘要： An optical recording device for forming recording tracks of an indented pattern on a magnetic recording tape comprises a rotary drum which has at least two windows, the magnetic recording tape being driven obliquely on the windows along an outer surface of the drum, and an optical system, disposed inside the rotary drum, for converting a modulated laser beam incident on the optical system into two slit beams, major axes of sections of which form a predetermined angle and for emitting the slit beams on the magnetic recording tape through the windows, whereby the recording tracks of the indented pattern in correspondence with the signal are formed obliquely on the magnetic recording tape with respect to a longitudinal direction of the magnetic recording tape by the slit beams so as to form different azimuths between adjacent recording tracks.
摘要翻译：一种用于在磁记录带上形成缩进图案的记录磁迹的光学记录装置包括具有至少两个窗口的旋转磁鼓，磁记录带沿着滚筒的外表面倾斜地在窗口上被驱动，并且光学系统，设置在旋转磁鼓内部，用于将入射在光学系统上的调制激光束转换成两个狭缝光束，其截面的主轴形成预定角度，并通过窗口将光束发射在磁记录带上，通过狭缝光束相对于磁记录带的纵向倾斜地在磁记录带上形成与信号相对应的凹入图案的记录轨迹，以便在相邻的记录轨道之间形成不同的方位角。

2. 发明授权

US4635152A Magnetic resonance-type playback apparatus including a magnetic material having magnetic anisotropy 失效
标题翻译：磁共振型回放装置，包括具有磁各向异性的磁性材料
公开(公告)号：US4635152A
公开(公告)日：1987-01-06
申请号：US633912
申请日：1984-07-24
申请人： Hitoshi Iwasaki , Shu Chiba , Norikazu Sawazaki
发明人： Hitoshi Iwasaki , Shu Chiba , Norikazu Sawazaki
IPC分类号： G11B5/127 , G11B5/33 , G11B5/14
CPC分类号： G11B5/1278 , G11B5/332
摘要： A magnetic playback apparatus using ferromagnetic resonance of a magnetic material provided with a magnetic anisotropy to develop an anisotropic magnetic field. The magnetic material is disposed at a position influenced by a magnetic field resulting from a signal recorded on the magnetic recording medium. The magnetic material is coupled with a high frequency circuit to be supplied with a high frequency magnetic field. The high frequency characteristics of the magnetic material greatly vary depending on a ferromagnetic resonance. A ferromagnetic resonance magnetic field is set up, allowing for the magnitude of an anisotropic magnetic field and the frequency of the high frequency magnetic field, so that a great variation in the high frequency characteristics due to the ferromagnetic resonance may be obtained according to the signal magnetic field.
摘要翻译：使用具有磁各向异性的磁性材料的铁磁共振的磁回放装置，以形成各向异性磁场。磁性材料设置在由记录在磁记录介质上的信号产生的磁场的位置上。磁性材料与高频电路耦合以供应高频磁场。磁性材料的高频特性根据铁磁谐振而大大变化。建立铁磁共振磁场，允许各向异性磁场的大小和高频磁场的频率，从而可以根据信号获得由于铁磁共振引起的高频特性的很大变化磁场。

3. 发明授权

US4609950A Magnetic head apparatus with variable inductance 失效
标题翻译：具有可变电感的磁头设备
公开(公告)号：US4609950A
公开(公告)日：1986-09-02
申请号：US477858
申请日：1983-03-22
申请人： Shu Chiba , Norikazu Sawazaki
发明人： Shu Chiba , Norikazu Sawazaki
IPC分类号： G11B5/02 , G11B5/00 , G11B5/33 , G11B5/127 , G11B20/06
CPC分类号： G11B5/332 , G11B5/00 , G11B5/33
摘要： A magnetic recording head apparatus includes: a magnetic head body opposing a travelling magnetic tape; a tuning circuit having the head body as a variable inductance element; a high-frequency signal source for generating a high-frequency signal; and a detector connected to the tuning circuit. The inductance of the head body is changed in accordance with a change in the magnetic signal field applied from the magnetic tape. The high-frequency signal is amplitude-modulated in accordance with the high-frequency signal. A peak or envelope waveform of the modulated high-frequency signal is detected by a detector, thereby obtaining a reproduced information signal.
摘要翻译：磁记录头装置包括：与行进磁带相对的磁头体; 调谐电路，其具有头体作为可变电感元件; 用于产生高频信号的高频信号源; 以及连接到调谐电路的检测器。根据从磁带施加的磁信号场的变化，头体的电感发生变化。高频信号根据高频信号进行幅度调制。由检测器检测调制后的高频信号的峰值或包络波形，从而获得再现的信息信号。

4. 发明授权

US4593332A Magnetic reproduction system utilizing magnetic body as capacitor 失效
标题翻译：利用磁体作为电容器的磁再生系统
公开(公告)号：US4593332A
公开(公告)日：1986-06-03
申请号：US485060
申请日：1983-04-14
申请人： Junichi Akiyama , Shu Chiba , Norikazu Sawazaki
发明人： Junichi Akiyama , Shu Chiba , Norikazu Sawazaki
IPC分类号： G01R33/02 , G11B5/02 , G11B5/33
CPC分类号： G11B5/33 , G01R33/02 , G11B5/02
摘要： A capacitance element includes as an interelectrode substance a magnetic body for detecting a magnetic field formed by a magnetic recording medium. A tuned circuit includes the capacitance element as a tuning element and receives a signal from a high-frequency oscillator. The magnetic characteristics of the magnetic body change with changes in the magnetic field formed by the magnetic recording medium. The high-frequency signal output from the tuned circuit changes with changes in the magnetic characteristics of the magnetic body. A detecting circuit detects the changes in the high-frequency signal output so as to reproduce signals recorded on the magnetic recording medium.
摘要翻译：电容元件包括用于检测由磁记录介质形成的磁场的磁体作为电极间物质。调谐电路包括作为调谐元件的电容元件并且接收来自高频振荡器的信号。磁体的磁特性随着磁记录介质形成的磁场的变化而变化。从调谐电路输出的高频信号随磁体的磁特性的变化而变化。检测电路检测高频信号输出的变化，以便再现记录在磁记录介质上的信号。

5. 发明授权

US4464691A Magnetic reproducing system 失效
标题翻译：磁再现系统
公开(公告)号：US4464691A
公开(公告)日：1984-08-07
申请号：US290325
申请日：1981-08-05
申请人： Norikazu Sawazaki , Shu Chiba
发明人： Norikazu Sawazaki , Shu Chiba
IPC分类号： G11B5/02 , G11B5/33 , G11B5/34 , G11B5/04
CPC分类号： G11B5/332 , G11B5/33
摘要： A magnetic head includes a magnetic body, at least the permeability or high frequency loss of which is changed with changes of the record magnetic field on a magnetic tape, and a coil. A high frequency signal is supplied to a tuned circuit, which includes the coil and a capacitor, and a signal corresponding to the record magnetic field is taken out through the detection of the changes of the voltage of the high frequency signal supplied to the tuned circuit.
摘要翻译：磁头包括磁体，至少磁导率或高频损失随着磁带上的记录磁场和线圈的变化而变化。将高频信号提供给包括线圈和电容器的调谐电路，并且通过检测提供给调谐电路的高频信号的电压的变化来取出与记录磁场相对应的信号。

6. 发明授权

US4677512A Magnetic reproducing apparatus 失效
标题翻译：磁再现装置
公开(公告)号：US4677512A
公开(公告)日：1987-06-30
申请号：US883028
申请日：1986-07-10
申请人： Junichi Akiyama , Shu Chiba , Norikazu Sawazaki , Shigeru Yatabe
发明人： Junichi Akiyama , Shu Chiba , Norikazu Sawazaki , Shigeru Yatabe
IPC分类号： G11B5/02 , G11B5/127 , G11B5/33 , G11B20/24
CPC分类号： G11B5/332 , G11B20/24 , G11B5/1278
摘要： An apparatus for reproducing a signal recorded, in the form of a perpendicular signal magnetization, on a perpendicular magnetic recording layer backed with a high permeability layer of a magnetic recording medium. A thin-film magnetic material is disposed to face the recording layer so that an enlarged magnetized region is formed in the high permeability layer, which includes the position at which the magnetic material faces the recording layer. In this region, magnetic variation occurs in response to the signal magnetization of the recording layer at the position the magnetic material faces the recording layer. A detecting member such as a coil is disposed in the proximity of the magnetic material so as to be magnetically coupled to the enlarged magnetized region of the high permeability layer. The detecting member is used as a tuning element of a tuning circuit supplied with high frequency energy. A resonance output voltage of the high frequency circuit varies in response to the detection of magnetic variation in the high permeability layer. A reproducing circuit detects the variation in the resonance output voltage of the high frequency circuit to reproduce the signal recorded on the recording layer.
摘要翻译：用于将以垂直信号磁化的形式记录的信号再现在由磁记录介质的高磁导率层支撑的垂直磁记录层上的装置。设置薄膜磁性材料以面对记录层，使得在包括磁性材料面对记录层的位置的高磁导率层中形成扩大的磁化区域。在该区域中，响应于磁性材料面向记录层的位置的记录层的信号磁化而发生磁变化。诸如线圈的检测部件设置在磁性材料附近，从而与高磁导率层的扩大的磁化区域磁耦合。检测部件用作提供高频能量的调谐电路的调谐元件。高频电路的谐振输出电压响应于高磁导率层中的磁变化的检测而变化。再现电路检测高频电路的谐振输出电压的变化，以再现记录在记录层上的信号。

7. 发明授权

US4489278A Electrostatic voltage detecting device 失效
标题翻译：静电电压检测装置
公开(公告)号：US4489278A
公开(公告)日：1984-12-18
申请号：US384605
申请日：1982-06-03
申请人： Norikazu Sawazaki
发明人： Norikazu Sawazaki
IPC分类号： G11B9/08 , H04R19/04 , G11B11/06
CPC分类号： G11B9/08 , H04R19/04
摘要： An electrostatic voltage detecting device includes a detecting electrode for detecting an electrostatic voltage generated by charge on a recording medium, a variable capacitance diode whose capacitance changes according to an output signal applied from the detecting electrode, a primary coil combined with the variable capacitance diode to form a resonance circuit, an oscillator for supplying an oscillating output signal of predetermined frequency to the primary coil, and a secondary coil inductively coupled with the primary coil. The capacitance of the variable capacitance diode changes according to an output voltage applied from the detecting electrode to vary a resonance frequency of the resonance circuit and consequently a voltage induced in the secondary coil.
摘要翻译：一种静电电压检测装置，包括：检测电极，用于检测由记录介质上的电荷产生的静电电压，根据从检测电极施加的输出信号电容变化的可变电容二极管，与可变电容二极管组合的初级线圈，形成谐振电路，用于向初级线圈提供预定频率的振荡输出信号的振荡器和与初级线圈感应耦合的次级线圈。可变电容二极管的电容根据从检测电极施加的输出电压而改变，以改变谐振电路的谐振频率，从而改变次级线圈中感应的电压。

8. 发明授权

US4592041A Head for recording an information signal in and reproducing the same from a semiconductor recording medium 失效
标题翻译：用于从半导体记录介质记录信息信号并将其从其再现的头
公开(公告)号：US4592041A
公开(公告)日：1986-05-27
申请号：US551933
申请日：1983-11-15
申请人： Shigeo Senzaki , Jun-ichiro Ikeuchi , Toshikazu Matsui , Norikazu Sawazaki
发明人： Shigeo Senzaki , Jun-ichiro Ikeuchi , Toshikazu Matsui , Norikazu Sawazaki
IPC分类号： G11B9/07 , G11B9/08 , G11B11/08 , G11B9/00
CPC分类号： G11B9/08
摘要： A head for recording an information signal in and reproducing the same from a semiconductor recording medium comprises an electrode stylus for recording and reproducing recording information by relatively sliding on the semiconductor recording medium, the recording information being recorded and reproduced through the electrode stylus, and a nonconductive supporting substrate, provided on the side surface of the electrode stylus, for supporting the electrode stylus. A hardness of the electrode stylus is lower than a hardness of a surface medium which constitutes the semiconductor recording medium and is higher than a hardness of the supporting substrate.
摘要翻译：用于从半导体记录介质记录信息信号并将其从其再现的头包括用于通过在半导体记录介质上相对滑动来记录和再现记录信息的电极触针，通过电极触针记录和再现记录信息，设置在电极触针的侧表面上的非导电支撑衬底，用于支撑电极触针。电极触针的硬度低于构成半导体记录介质的表面介质的硬度，并且高于支撑基板的硬度。

9. 发明授权

US3979773A Magnetic recording and reproducing apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US3979773A
公开(公告)日：1976-09-07
申请号：US462712
申请日：1974-04-22
申请人： Norikazu Sawazaki , Hiroyuki Tsukamoto , Motoi Yagi
发明人： Norikazu Sawazaki , Hiroyuki Tsukamoto , Motoi Yagi
IPC分类号： G11B5/55 , G11B15/18 , G11B15/295 , H04N5/782 , G11B15/60 , G11B23/06
CPC分类号： G11B15/295 , G11B15/1891 , G11B5/5504 , H04N5/782
摘要： A magnetic recording and reproducing apparatus comprises a drive mechanism for running an endless magnetic tape of less than 300 m at a higher speed than 5 meters per second; a restricting member interlocking with the roll of said rapidly moving endless magnetic tape wound on a reel to apply a force against a centrifugal force generated on the tape roll so as to prevent it from being shaken unnecessarily; and a stationary magnetic head so arranged that the head is stational in a tape running direction and intermittently movable in a tape width direction to record frequency-modulated video signals in, and reproducing said signals from, the magnetic tape.
摘要翻译：一种磁记录和再现装置包括用于以比每秒5米更高的速度运行小于300m的环形磁带的驱动机构; 与所述快速移动的环形磁带的卷轴互锁的限制构件，其卷绕在卷轴上，以施加抵抗在带卷上产生的离心力的力，以防止其不必要地摇动; 以及固定磁头，其布置成使得磁头在磁带运行方向上是相互垂直的，并且可沿磁带宽度方向间歇地移动，以记录来自磁带的频率调制视频信号和再现所述信号。

10. 发明授权

US4530016A Magnetic recording and reproducing apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US4530016A
公开(公告)日：1985-07-16
申请号：US513386
申请日：1983-07-13
申请人： Norikazu Sawazaki
发明人： Norikazu Sawazaki
IPC分类号： G11B5/00 , G11B5/127 , G11B5/33 , G11B5/62 , G11B5/02
CPC分类号： G11B5/1278 , G11B5/00 , G11B5/33 , G11B5/332 , G11B5/62
摘要： Signals are recorded on a magnetic tape having a magnetic recording layer containing a magnetic material whose magnetic permeability or high frequency loss varies with a magnetic field produced therein. Changes in the permeability or high frequency loss produced according to the recording signals are converted into changes in the resonant frequency or Q of a resonant circuit, whereby a reproduced output is obtained.
摘要翻译：信号被记录在具有磁记录层的磁带上，磁记录层含有其磁导率或高频损耗随其中产生的磁场而变化的磁性材料。根据记录信号产生的磁导率或高频损耗的变化被转换成谐振电路的谐振频率或Q的变化，由此获得再现的输出。

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