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1. 发明授权

US3873992A Magnetic recording system with reduction of high frequency signal distortion in vicinity of saturation level 失效
标题翻译：磁记录系统，降低了饱和度附近的高频信号失真
公开(公告)号：US3873992A
公开(公告)日：1975-03-25
申请号：US32194473
申请日：1973-01-08
申请人： AKAI ELECTRIC
发明人： SATO FUJIO , FUJIMOTO EISUKE , SATO KEISUKE , TANAKA BUNICHIRO
IPC分类号： G11B5/00 , H03G9/16 , H03G9/18 , H03G11/02 , H04N5/921 , G11B5/02 , G11B5/45
CPC分类号： H04N5/921 , G11B5/00 , H03G9/16 , H03G9/18 , H03G11/02
摘要： The amplitude of high level high frequency components of a signal to be recorded on a magnetic recording medium is suppressed in the vicinity of a saturation level of the magnetic recording medium prior to its recording in order to obviate high frequency distortion due to magnetic losses. High fidelity recording of a high level signal containing high frequency components is enabled with little distortion and improved signalto-noise ratio.
摘要翻译：要记录在磁记录介质上的信号的高电平高频分量的振幅在记录之前被抑制在磁记录介质的饱和电平附近，以便消除由于磁损耗引起的高频失真。包含高频分量的高电平信号的高保真度记录能够实现很少的失真和改善的信噪比。

2. 发明授权

US3686466A Easily engageable magnetic head with visible gap aligning means 失效
标题翻译：易于使用的磁头，具有可视的GAP对准方式
公开(公告)号：US3686466A
公开(公告)日：1972-08-22
申请号：US3686466D
申请日：1970-09-09
申请人： AKAI ELECTRIC
发明人： SATO FUJIO , HOMMA KO
IPC分类号： G11B5/10 , G11B5/187 , G11B5/255 , G11B5/29 , G11B5/22 , G11B5/28 , G11B5/40
CPC分类号： G11B5/29 , G11B5/10 , G11B5/187 , G11B5/255 , Y10T29/49055
摘要： A magnetic head has a front head portion which is adapted to engage with a rear head portion. The rear head portion consists of a plurality of U-shaped core portions, a shield plate and a holder therefor. The front head portion comprises a stacked arrangement which includes a plurality of core tips and a shield plate therebetween. The stacked arrangement is surrounded by transparent or semitransparent wear resistant members. When the front head portion is engaged to the rear head portion by a rectangular shaped frame through which the front head portion passes, a plurality of closed magnetic paths will be formed by the abutting of each of the U-shaped core portions with a given one of the core tips.
摘要翻译：磁头具有适于与后头部接合的前头部。后头部由多个U形芯部，屏蔽板和支架组成。前头部分包括堆叠的布置，其包括多个芯尖和它们之间的屏蔽板。堆叠布置被透明或半透明耐磨构件包围。当前头部通过前头部分穿过的矩形框架与后头部接合时，将通过每个U形芯部分与给定的一个邻接形成多个闭合的磁路径的核心提示。

3. 发明授权

US3504116A Magnetic recording system with a disabled bias oscillator during the vertical synchronization interval 失效
标题翻译：在垂直同步间隔期间具有禁用偏置振荡器的磁记录系统
公开(公告)号：US3504116A
公开(公告)日：1970-03-31
申请号：US3504116D
申请日：1966-08-18
申请人： AKAI ELECTRIC
发明人： SATO FUJIO , FUKATSU MOTONORI , IWAI KATSUYUKI
IPC分类号： H04N5/921 , H04N5/78 , H04N5/04
CPC分类号： H04N5/921

4. 发明授权

US3260470A Magnetic tape drive mechanism 失效
标题翻译：磁带驱动机构
公开(公告)号：US3260470A
公开(公告)日：1966-07-12
申请号：US32660963
申请日：1963-11-27
申请人： AKAI ELECTRIC
发明人： EISUKE FUJIMOTO
IPC分类号： G11B5/55 , G11B15/06 , G11B15/12 , G11B15/18 , G11B15/28 , G11B15/44 , G11B15/48 , G11B25/06 , G11B27/00 , G11B27/34
CPC分类号： G11B27/34 , G11B5/5504 , G11B15/06 , G11B15/12 , G11B15/18 , G11B15/28 , G11B15/44 , G11B15/48 , G11B25/06 , G11B27/007

5. 发明授权

US3233806A Tape drive in magnetic tape recorder 失效
标题翻译：磁带录音机磁带机
公开(公告)号：US3233806A
公开(公告)日：1966-02-08
申请号：US27179463
申请日：1963-04-09
申请人： AKAI ELECTRIC
发明人： TADAO SHIRAI
IPC分类号： G05G11/00 , G11B15/29
CPC分类号： G05G11/00 , G11B15/29

6. 发明授权

US3769100A Method for manufacturing semi-hard magnetic material 失效
标题翻译：制造半硬磁材料的方法
公开(公告)号：US3769100A
公开(公告)日：1973-10-30
申请号：US3769100D
申请日：1971-09-10
申请人： AKAI ELECTRIC
发明人： WATANABE H , WATANABE R , TERAMOTO H
IPC分类号： C22C33/02 , C22C38/04 , H01F1/08 , H01F1/00
CPC分类号： C22C33/0278 , C22C33/02 , C22C33/0285 , C22C38/04 , H01F1/086
摘要： Semi-hard magnetic Fe-Mn system alloys, prepared by powder metallurgical methods, are subjected to cold working and subsequent heat treatment to obtain a product of superior magnetic properties and relatively constant magnetic characteristics, as compared to those products prepared by conventional casting methods. The properties of these magnetic alloys render them suitable for use in hysteresis motors, mechanical channel elements employed in electrical communication systems and the like.
摘要翻译：与通过常规铸造方法制备的那些产品相比，通过粉末冶金方法制备的半硬磁性Fe-Mn系合金经受冷加工和随后的热处理以获得具有优异磁性和相对恒定磁特性的产物。这些磁性合金的性质使其适用于滞后电动机，电气通信系统中使用的机械通道元件等。

7. 发明授权

US3657624A Speed control mechanism for a d.c. electric motor 失效
标题翻译：直流电机的速度控制机制
公开(公告)号：US3657624A
公开(公告)日：1972-04-18
申请号：US3657624D
申请日：1970-09-21
申请人： AKAI ELECTRIC
发明人： NAGANO MASAHIKO
IPC分类号： H02P7/29 , H02P5/16
CPC分类号： H02P7/291 , Y10S388/915
摘要： The speed controller includes a first pulse generator which operates in response to a motor revolution pickup head to produce a sawtooth pulse with the pulse interval being proportional to the speed of the motor and a second pulse generator for producing a series of pulses having a constant time lag relative to a certain preceding one of said sawtooth pulses. The combined pulses produce a control signal pulse series for control of the motor current.
摘要翻译：速度控制器包括第一脉冲发生器，其响应于电动机旋转拾取头操作以产生具有与电动机的速度成比例的脉冲间隔的锯齿波脉冲和用于产生具有恒定时间的一系列脉冲的第二脉冲发生器相对于前述一个所述锯齿波脉冲的滞后。组合的脉冲产生用于控制电动机电流的控制信号脉冲序列。

8. 发明授权

US3652030A Tape reeling mechanism on video tape recorder 失效
标题翻译：视频胶带记录仪上的胶带卷绕机构
公开(公告)号：US3652030A
公开(公告)日：1972-03-28
申请号：US3652030D
申请日：1970-07-07
申请人： AKAI ELECTRIC
发明人： NAKANO TATSUMI
IPC分类号： G11B20060101 , G11B15/44 , G03B1/04
CPC分类号： G11B15/442
摘要： The invention relates to a tape reeling mechanism of a video tape recorder, having a rotatable, tape delivery reel support and a rotatable tape wind-up support. The improvements comprises a positioner slide having a substantially triangular opening and arranged between two operation control push buttons, on the one hand, and a drive wheel and idle roller assembly on the other hand, which is pivotably mounted on the panel of the recorder between the reel supports, and a lever pivotably mounted on the panel and having a pin engageable with the opening, the lever being positively held in its neutral position by engagement of the pin with the central apex of the triangular opening.
摘要翻译：本发明涉及一种录像机的磁带卷取机构，具有可旋转的磁带传送卷轴支架和可旋转的磁带卷绕支架。该改进包括具有大致三角形开口的定位器滑块，并且布置在两个操作控制按钮之间，另一方面是驱动轮和空转辊组件，该组件可转动地安装在记录器的面板之间卷轴支撑件和可枢转地安装在面板上并具有可与开口接合的销的杆，杆通过销与三角形开口的中心顶点的接合而被正确地保持在其中立位置。

9. 发明授权

US3614308A Magnetic recording and reproducing system with alternating polarity inversion 失效
标题翻译：具有极性反转的磁记录和再现系统
公开(公告)号：US3614308A
公开(公告)日：1971-10-19
申请号：US3614308D
申请日：1966-09-08
申请人： AKAI ELECTRIC
发明人： IWAI KATSUYUKI , FUKATSU MOTONORI , SATO FUJIO
IPC分类号： H04N5/921 , G11B5/02 , H04N5/78 , H04N7/12
CPC分类号： H04N5/921
摘要： Apparatus for direct-recording and direct-reproducing television video signals in longitudinal tracks on magnetic tape by reversing the polarity of the video signals at intervals at least as long as the horizontal period of the video signal. Gating pulses are generated responsive to the blanking signals for alternately gating the inverted and noninverted video signals.

10. 发明授权

US3495033A Direct magnetic recording system for television signals employing a synchronized bias oscillator 失效
标题翻译：使用同步偏振振荡器的电视信号的直接磁记录系统
公开(公告)号：US3495033A
公开(公告)日：1970-02-10
申请号：US3495033D
申请日：1966-08-26
申请人： AKAI ELECTRIC
发明人： IWAI KATSUYUKI , FUKATSU MOTONORI , SATO FUJIO
IPC分类号： H04N5/921 , H04N5/76
CPC分类号： H04N5/921

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