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1. 发明授权

US4791514A Magnetic recording device with rotating head 失效
标题翻译：带旋转磁头的磁记录装置
公开(公告)号：US4791514A
公开(公告)日：1988-12-13
申请号：US889882
申请日：1986-07-28
申请人： Ernst Huijer , Jean C. Lehureau , Claude Monlouis
发明人： Ernst Huijer , Jean C. Lehureau , Claude Monlouis
IPC分类号： G11B5/02 , G11B5/53 , G11B21/04
CPC分类号： G11B5/538
摘要： The magnetic recording device with rotating head according to the invention comprises a magnetic recording medium, a cylindrical and rotating head, a fixed magnetic excitation circuit; the head comprising, on its surface, two movable pole pieces separated by a gap and each magnetically linked to an initial and a second magnetic circuit in the shape of a portion of a ring and providing a rotating joint to the passage of the magnetic flux, with the fixed, magnetic excitation circuit possessing an excitation coil that induces an magnetic field in a magnetic circuit having two fixed pole pieces, each magnetically coupled by a gap to one of the said rings.Application: Video tape recorders in particular.
摘要翻译：根据本发明的具有旋转磁头的磁记录装置包括磁记录介质，圆柱旋转磁头，固定磁激励电路; 所述头部在其表面上包括由间隙分开的两个可移动极靴，每个可动极片与环的一部分形状的初始和第二磁路磁耦合，并且向磁通的通道提供旋转接头，固定磁激励电路具有励磁线圈，该励磁线圈在具有两个固定极片的磁路中产生磁场，每个磁极通过与所述环中的一个的间隙磁耦合。应用：录像机特别。

2. 发明授权

US3662403A Magnetic, and magnetic removal recording 失效
标题翻译：磁性和磁性去除记录
公开(公告)号：US3662403A
公开(公告)日：1972-05-09
申请号：US3662403D
申请日：1966-11-14
申请人： HOLLINGSWORTH R LEE
发明人： HOLLINGSWORTH R LEE
IPC分类号： B41C1/14 , G11B5/00 , G11B5/53 , G11B11/105 , H04N1/27 , H04N5/78 , G11B5/02 , G01D15/12
CPC分类号： B41C1/14 , G11B5/00 , G11B5/538 , G11B11/10502 , H04N1/27 , H04N5/7805
摘要： The present invention is characterized as means to scan remove magnetic particles from a magnetic coated tape; from tape having a magnetic printed basic pattern thereon such as equidistant longitudinal lines; from tape having a magnetically printed halftone continuous pattern thereon, such magnetic removal accomplished by passing the tape through the pole faces of a magnetic recording head, or passing the tape in operative relation to a magnetic transducer means. At least one of the poles of the recording head is brought to a point substantially as sharp as a needle point. Relatively large power is required to produce satisfactory elemental of the magnetic particles according to modulated wave energy applied to the recording or transducer head. The invention can produce permanent magnetic recordings by the absence of the particles removed; printing stencils and printing plates; projectable pictures, data information, projectable news and pictorial presentations including advertising, and instantaneous substitute for microfilm records. There are other applications since the packing density measurements indicate that such pictures may have 18,000,000 bits per square inch of elemental detail, and perhaps considerably more.
摘要翻译：本发明的特征在于扫描从磁性涂层带去除磁性颗粒的装置; 从其上具有磁性印刷基本图案的胶带，例如等距的纵向线; 从其上具有磁性印刷的半色调连续图案的胶带，通过使胶带穿过磁记录头的磁极表面，或将胶带以可操作的方式将磁带传递到磁性换能器装置而实现的磁性去除。记录头的至少一个磁极被带到基本上与针尖一样尖的点。需要相对较大的功率以根据施加到记录或换能器头的调制波能产生令人满意的磁性颗粒元素。本发明可以通过不去除颗粒而产生永磁记录; 印刷模板和印版; 可投影图片，数据信息，可投影新闻和图形介绍，包括广告，以及即时替代微缩胶卷记录。还有其他应用，因为打包密度测量表明这样的图像可以具有每平方英寸元素细节18,000,000比特，也可能更多。

3. 发明授权

US2800384A Wide frequency range recording and reproducing apparatus 失效
标题翻译：宽频率记录和再现装置
公开(公告)号：US2800384A
公开(公告)日：1957-07-23
申请号：US36342453
申请日：1953-06-22
申请人： PARKER MCIVOR L
发明人： PARKER MCIVOR L
IPC分类号： G11B5/02 , G11B5/53 , G11B7/003 , G11B9/08
CPC分类号： G11B9/08 , G11B5/02 , G11B5/538 , G11B7/003

4. 发明授权

US4562503A Perpendicular magnetic recording head 失效
标题翻译：垂直磁记录头
公开(公告)号：US4562503A
公开(公告)日：1985-12-31
申请号：US515550
申请日：1983-07-20
申请人： Yoshiharu Fujioka , Akio Onuki , Shushi Takei
发明人： Yoshiharu Fujioka , Akio Onuki , Shushi Takei
IPC分类号： G11B5/33 , G11B5/127 , G11B5/53 , G11B5/30
CPC分类号： G11B5/1278 , G11B5/127 , G11B5/538
摘要： A main magnetic pole member and an auxiliary magnetic pole member of a perpendicular magnetic recording head are disposed such that they are opposed to each other with a recording medium for recording a signal thereon (i.e., a magnetic tape) interposed therebetween. In the central portion of a holder of the main magnetic pole member, a magnetic pole film is embedded such that its upper end edge is exposed on a sliding contact surface of the holder. The magnetic tape is brought into sliding contact with the magnetic pole film. A pair of electrodes are embedded in such a manner as to sandwich an upper end portion of the magnetic pole film within the holder, and at positions spaced by a suitable distance from such upper end portion of the magnetic pole film. The auxiliary magnetic pole member causes the generation of a uniform magnetic flux directed from the auxiliary magnetic pole member toward the magnetic pole film. The magnetic pole film is formed of a magnetic material which has its permeability varied upon application thereto of an electric field. When a voltage is applied to the electrodes in accordance with the signal, an electric field is formed in the magnetic pole film to increase or decrease the permeability thereof, thereby causing an increase or decrease in density of the magnetic flux in the vicinity of the magnetic pole film. Thus, the magnetization of the magnetic tape is inverted or noninverted with the result that perpendicular magnetic recording of the signal is effected.
摘要翻译：垂直磁记录头的主磁极部件和辅助磁极部件被设置成使得它们彼此相对，并具有用于在其间记录信号的记录介质（即，磁带）。在主磁极构件的保持器的中心部分中，嵌入磁极膜，使得其上端边缘暴露在保持器的滑动接触表面上。磁带与磁极膜滑动接触。一对电极被嵌入以将磁极膜的上端部夹在保持器内部以及与磁极膜的上端部隔开适当距离的位置。辅助磁极部件产生从辅助磁极部件引导到磁极膜的均匀磁通量。磁极膜由磁性材料形成，磁性材料在施加电场时其磁导率变化。当根据该信号对电极施加电压时，在磁极膜中形成电场以增加或减少其磁导率，从而使得在磁性附近的磁通密度增加或减少极片因此，磁带的磁化反转或不反相，结果是信号的垂直磁记录被实现。

5. 发明授权

US3053942A Method of recording and/or reproducing high-frequency signals 失效
标题翻译：记录和/或再现高频信号的方法
公开(公告)号：US3053942A
公开(公告)日：1962-09-11
申请号：US80274459
申请日：1959-03-30
申请人： PHILIPS CORP
发明人： THEODORUS BACKERS FRANCISCUS , HENDRIK WESSELS JOHANNES
IPC分类号： G11B5/008 , G11B5/52 , G11B5/53 , G11B5/86 , G11B15/00 , G11B27/024
CPC分类号： G11B5/0086 , G11B5/52 , G11B5/538 , G11B5/86 , G11B15/00 , G11B27/024

6. 发明授权

US2743318A Method and apparatus for recording and reproducing television pictures 失效
标题翻译：用于记录和再现电视图像的方法和装置
公开(公告)号：US2743318A
公开(公告)日：1956-04-24
申请号：US34846453
申请日：1953-04-13
申请人： DE FOREST LEE
发明人： DE FOREST LEE
IPC分类号： G11B5/53
CPC分类号： G11B5/538

7. 发明授权

US3419688A Apparatus for recording perpendicular magnetic fields in transverse tracks on a magnetic tape 失效
标题翻译：用于在磁带上的横向磁道中记录垂直磁场的装置
公开(公告)号：US3419688A
公开(公告)日：1968-12-31
申请号：US41837464
申请日：1964-12-04
申请人： R LEE HOLLINGSWORTH
发明人： LEE HOLLINGSWORTH R
IPC分类号： G11B5/53 , G11B15/61 , G11B15/66
CPC分类号： G11B15/66 , G11B5/538 , G11B15/61

8. 发明授权

US3081381A Transversely scanning transducer with fixed electromagnet and moving pole pieces 失效
标题翻译：具有固定电磁铁和移动极片的横向扫描传感器
公开(公告)号：US3081381A
公开(公告)日：1963-03-12
申请号：US40147053
申请日：1953-12-31
申请人： NEWS SYNDICATE CO INC
发明人： MERRY JOHN M P
IPC分类号： G11B5/53
CPC分类号： G11B5/538

9. 发明授权

US2891115A Magnetic transducer 失效
公开(公告)号：US2891115A
公开(公告)日：1959-06-16
申请号：US40873154
申请日：1954-02-08
申请人： GISHOLT MACHINE CO
发明人： HOGAN JOHN W
IPC分类号： B23Q15/013 , G05B19/16 , G11B5/33 , G11B5/53
CPC分类号： G05B19/16 , B23Q15/013 , G11B5/33 , G11B5/538 , Y10T409/301792

10. 发明授权

US2188650A Magnetic recording 失效
公开(公告)号：US2188650A
公开(公告)日：1940-01-30
申请号：US20373638
申请日：1938-04-23
申请人： RCA CORP
发明人： CLARK GILBERT R
IPC分类号： G11B5/00 , G11B5/53 , G11B5/78
CPC分类号： G11B5/538 , G11B5/00 , G11B5/78

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