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公开(公告)号：US4167692A
公开(公告)日：1979-09-11
申请号：US845435
申请日：1977-10-25
摘要： A brush-less DC motor includes a stator member; a stationary cylindrical member projected from the stator member and having bearings on its inner circumferential surface; a rotary shaft being rotatably supported by the bearings of the stationary cylindrical member; a rotary cylindrical member into which the stationary cylindrical member is inserted, and to which the rotary shaft is fixed; two rotary discs of magnetic material, fixed to the rotary cylindrical member and spaced from each other; a permanent magnet fixed to one of the rotary discs; a rotational-position detecting member; and a coil assembly including a plurality of coil units. The working point of the rotary shaft is nearer to the stationary cylindrical member than to the rotary cylindrical member.
摘要翻译： 无刷直流电动机包括定子构件; 固定圆柱形构件从定子构件突出并在其内圆周表面上具有轴承; 旋转轴，其由所述固定圆柱形构件的轴承可旋转地支撑; 旋转圆柱形构件，固定圆柱形构件插入其中，旋转轴固定到该旋转圆柱构件; 两个磁性材料旋转盘，固定在旋转圆柱形构件上并彼此分开; 固定到所述旋转盘中的一个的永磁体; 旋转位置检测构件; 以及包括多个线圈单元的线圈组件。 旋转轴的工作点比旋转圆柱形构件更靠近固定圆柱形构件。
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2.发明授权Tape sensing device for magnetic tape recording and/or reproducing apparatus 失效用于磁带记录和/或再现装置的磁带传感装置
公开(公告)号：US4038692A
公开(公告)日：1977-07-26
申请号：US556120
申请日：1975-03-06
申请人： Kenkichi Umeda , Hiroyuki Yamauchi
发明人： Kenkichi Umeda , Hiroyuki Yamauchi
摘要： A device for sensing the type of magnetic coating on a magnetic tape while the latter is at rest, for example, in a magnetic tape recording and/or reproducing apparatus, has a DC magnetic recording head energizable by a predetermined DC voltage for applying a DC magnetic flux to the tape with which such head is engaged, a magnetic sensing element preferably coupled with the DC magnetic recording head for sensing the remanence or residual magnetism in the tape while the latter remains at rest following the application of the DC magnetic flux to the tape, and a level detector for detecting the level of the sensed remanence of the tape as an indication of the type of magnetic coating thereon. Such level detector may be advantageously employed for controlling a frequency equalizing circuit and/or a bias oscillator included in the signal recording circuit of the recording and/or reproducing apparatus so as to automatically adapt the latter for recording operations on the particular type of tape installed therein.
摘要翻译： 用于感测磁带上的磁性涂层的类型的装置，例如在磁带记录和/或再现装置中的磁性涂层的一种装置，具有通过预定直流电压激励的DC磁记录头，用于施加DC 磁头与磁头啮合的磁带，一个磁性传感元件，优选地与直流磁记录头连接，用于感测磁带中的剩磁或剩磁，而后者在将DC磁通量施加到 胶带和用于检测磁带的检测到的剩磁度的电平的电平检测器，作为其上的磁性涂层的类型的指示。 这种电平检测器可以有利地用于控制记录和/或再现装置的信号记录电路中包括的频率均衡电路和/或偏置振荡器，以便自动适应后者用于在安装的特定类型的磁带上进行记录操作 其中。
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3.发明授权Recording in a single track visual signals associated with audio signals recorded in opposed directions in plural tracks 失效在单个轨道中记录与在多个轨道中以相反方向记录的音频信号相关联的视觉信号
公开(公告)号：US4445150A
公开(公告)日：1984-04-24
申请号：US322367
申请日：1981-11-17
申请人： Heitaro Nakajima , Kenkichi Umeda , Youichi Kodera , Noriaki Naito , Hiroyuki Yamauchi , Isao Matsumoto , Shouichi Nakamura , Katsuo Takada , Ken Shiga , Yoshihito Yamamoto
发明人： Heitaro Nakajima , Kenkichi Umeda , Youichi Kodera , Noriaki Naito , Hiroyuki Yamauchi , Isao Matsumoto , Shouichi Nakamura , Katsuo Takada , Ken Shiga , Yoshihito Yamamoto
IPC分类号： G11B23/18 , G09B5/06 , G11B5/48 , G11B15/00 , G11B23/36 , G11B27/32 , G11B27/34 , G11B31/00 , H04N5/782 , G11B15/02 , G11B5/43
CPC分类号： G11B5/4893 , G09B5/062 , G11B15/005 , G11B27/322 , G11B27/34 , G11B31/00 , H04N5/782
摘要： A method of recording and reproducing audio signals and corresponding visual signals in parallel tracks extending in the longitudinal direction on a magnetic tape, includes the steps of recording the audio signals in first and second primary tracks on opposite sides of the tape in the widthwise direction thereof; and alternately recording a first visual information signal corresponding to the audio signal in the first primary tracks and a second visual information signal corresponding to the audio signal in the second primary tracks in a single secondary track positioned in the center of the tape in the widthwise direction thereof, the first visual information signal being recorded in first information blocks in the secondary track and the second visual information signal being recorded in second information blocks in the secondary track in an alternating relation with the first information blocks such that only the first visual information signal is reproduced when reproducing the audio signal from the first primary tracks and only the second visual information signal is reproduced when reproducing the audio signal from the second primary tracks. The preset invention is also directed to apparatus for performing the above method.
摘要翻译： 在磁带上沿长度方向延伸的并行轨道中记录和重放音频信号和对应的视觉信号的方法包括以下步骤：将音频信号记录在带宽度方向的相对侧上的第一和第二主音轨中 ; 并且在第一主要磁道中交替地记录与音频信号相对应的第一视觉信息信号和对应于第二主音轨中的音频信号的第二视觉信息信号，该第二视觉信息信号位于沿磁带的中心位于宽度方向上的单个辅助磁道中 第一视觉信息信号被记录在辅助磁道中的第一信息块中，并且第二视觉信息信号以与第一信息块交替的关系记录在辅助磁道中的第二信息块中，使得仅第一视觉信息信号 当再现来自第一主音轨的音频信号时再现，并且当再现来自第二主音轨的音频信号时，再现第二视觉信息信号。 本发明还涉及用于执行上述方法的装置。
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公开(公告)号：US4041453A
公开(公告)日：1977-08-09
申请号：US523918
申请日：1974-11-14
CPC分类号： G11B20/1809
摘要： A system for handling pulse encoded signals includes several parallel signal paths to carry pulses on which a signal has been encoded. The encoding is based on a predetermined amplitude value, or weight, for each pulse, and each signal path receives all pulses having the same weighting factor. A switching system is provided to switch the signals received on the various paths to different paths in a determinable order at a repetition rate commensurate with the pulse encoding repetition rate. The signals are then transmitted along the signal paths and are then switched back to the original order for pulse decoding. If pulse bits are lost in the second path, an interpolation may be made to provide a reasonable restoration of the signal to minimize the dropout effect. The switching of signals back to the original order virtually eliminates the possibility of having two successive dropouts of the same pulse weight in the signals to be decoded, and thus eliminates the possibility of having no standard of interpolation in the reconstructed signal.
摘要翻译： 用于处理脉冲编码信号的系统包括几个并行信号路径，用于承载信号已被编码的脉冲。 编码基于每个脉冲的预定振幅值或权重，并且每个信号路径接收具有相同权重因子的所有脉冲。 提供一种交换系统，以与脉冲编码重复率相称的重复速率，以可确定的顺序将在各种路径上接收的信号切换到不同的路径。 然后，信号沿着信号路径传输，然后被切换回原始的脉冲解码顺序。 如果脉冲位在第二路径中丢失，则可进行内插以提供信号的合理恢复以最小化丢失效应。 信号的切换回到初始阶段实际上消除了在待解码的信号中具有相同的脉冲重量的两个连续丢失的可能性，并且因此消除了在重建的信号中没有内插标准的可能性。
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公开(公告)号：US3940799A
公开(公告)日：1976-02-24
申请号：US537575
申请日：1974-12-30
申请人： Isao Matsumoto , Kenkichi Umeda
发明人： Isao Matsumoto , Kenkichi Umeda
IPC分类号： G11B23/087 , G11B23/04 , G11B15/04
CPC分类号： G11B23/08714 , G11B23/0875 , G11B23/08785
摘要： An improved tape cassette for use with small size tape recorders which provides mechanical indicating means on the cassette which enables the user to tell which side of the cassette has been utilized and further provides a pair of depressions formed in two rear corners of the cassette which are adapted to receive a sensing lever of the tape machine for preventing erasure of the tape accidentally. The placement of the depressions at the rear corners allow the cassette and the machine with which it is to be used to be made smaller and much easier to align the sensing lever of the recorder, than in the prior art.
摘要翻译： 一种用于小尺寸磁带录音机的改进磁带盒，其在盒上提供机械指示装置，其使得用户能够判断盒的哪一侧已被使用，并且还提供形成在盒的两个后角中的一对凹陷， 适于接收磁带机的感测杆，以防止磁带意外擦除。 凹陷在后角处的放置允许使用它的盒式磁带和其机器比现有技术更小，更容易对准记录器的传感杆。
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公开(公告)号：US4139875A
公开(公告)日：1979-02-13
申请号：US845672
申请日：1977-10-26
CPC分类号： G11B25/10
摘要： In a cassette and card recording and/or reproducing apparatus; a housing is provided to receive a cassette with a run of the magnetic tape therein being coincident with a recording medium transport path, or to guide a card having a magnetic stripe affixed thereto so as to be disposed in said transport path, a head carriage is movable normal to the transport path and carries a magnetic head engageable with the magnetic tape or stripe in the transport path when the carriage is moved to an operative position, a pinch roller is mounted on the head carriage and cooperates with a rotated capstan for driving either the tape or card therebetween in the transport path upon movement of the carriage to its operative position, a tape guide member is urged to project into the transport path for guiding a tape in such path relative to the head in response to movement of the carriage to its operative position in the cassette mode of operation of the apparatus, and a mode change-over mechanism is selectively actuable for establishing the cassette mode of operation or the card mode of operation and includes a member which blocks the projection of the tape guide member into the transport path when the carriage is moved to its operative position in the card mode of operation.
摘要翻译： 在盒式磁带和卡片记录和/或再现装置中; 提供一个壳体，以便在其中与记录介质传送路径重合的磁带上接收磁带，或者引导一个具有固定在其上的磁条以便设置在所述传输路径中的磁头托架 当托架移动到操作位置时，夹紧辊安装在头部托架上并与旋转的绞盘配合，用于驱动任一个 当托架移动到其操作位置时，传送路径中的带或卡在其中被推动以引导带导向件突出到传送路径中，用于响应于托架的运动而相对于头部在这样的路径中引导带 其在装置的盒式操作模式下的操作位置和模式转换机构可选择地致动以建立盒式操作模式 n或卡的操作模式，并且包括当托架以卡操作模式移动到其操作位置时阻挡带引导构件到输送路径中的突出的构件。
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公开(公告)号：US4079426A
公开(公告)日：1978-03-14
申请号：US701513
申请日：1976-07-01
申请人： Kenkichi Umeda , Noriaki Naito
发明人： Kenkichi Umeda , Noriaki Naito
CPC分类号： G11B15/06 , G11B5/00 , G11B5/008 , G11B5/00817 , G11B5/00826 , G11B5/00878 , G11B5/02 , G11B5/4893
摘要： An azimuth angle other than zero can occur if magnetic tape vibrates or moves in the tape width direction during recording or playback mode and this can result in azimuth loss which is a function of the track width angle of misalignment and the wave length of the signals. The wider the tape width the greater the azimuth loss and the lower the tape transport speed the greater the azimuth loss. Thus, the present invention varies the track width and speed so as to obtain optimum reproduction fidelity by combining two or more heads to obtain the desired results.
摘要翻译： 如果磁带在记录或重放模式下振动或沿磁带宽度方向移动，则可能会发生零点以外的方位角，这可能导致方位角损失，这是轨迹宽度未对准角度和信号波长的函数。 磁带宽度越宽，方位角损耗越大，磁带传送速度越慢，方位角损耗就越大。 因此，本发明通过组合两个或更多个磁头来改变磁道宽度和速度以便获得最佳再现保真度，以获得期望的结果。
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公开(公告)号：US4005480A
公开(公告)日：1977-01-25
申请号：US546334
申请日：1975-02-03
申请人： Isao Matsumoto , Kenkichi Umeda
发明人： Isao Matsumoto , Kenkichi Umeda
CPC分类号： G11B15/06
摘要： A tape cassette and machine wherein the tape cassette is provided with a breakable pin such that if the pin is removed the tape cannot be erased and wherein the machine includes a mechanism for detecting whether the pin is present in the cassette so as to properly interlock the machine to correlate with the presence or absence of the pin. As tape machines and cassettes are becoming smaller and smaller it is desirable to provide cassette mounting means and interlock mechanism which can be mounted in the minimum space.
摘要翻译： 一种盒式磁带和机器，其中带盒设置有可破坏的销，使得如果销被去除，则带不能被擦除，并且其中机器包括用于检测销是否存在于盒中以便适当地互锁的机构 机器与引脚的存在或不存在相关。 随着磁带机和盒式磁带越来越小，希望提供可安装在最小空间中的盒式安装装置和互锁机构。
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