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    Method of overwriting recorded data on magnetic tape in apparatus employing positioning signals derived from axially displaced heads
    52.
    发明授权
    Method of overwriting recorded data on magnetic tape in apparatus employing positioning signals derived from axially displaced heads 失效
    在使用从轴向位移头部导出的定位信号的装置中，在磁带上重写记录数据的方法

    公开(公告)号：US5138499A

    公开(公告)日：1992-08-11

    申请号：US551768

    申请日：1990-07-11

    申请人： Masahiro Tamegai

    发明人： Masahiro Tamegai

    IPC分类号： G11B5/09 ,  G11B15/18 ,  G11B20/12 ,  G11B20/18 ,  G11B27/032 ,  G11B27/036 ,  G11B27/36

    CPC分类号： G11B27/036 ,  G11B15/1875 ,  G11B20/1209 ,  G11B27/36 ,  G11B20/1211 ,  G11B2220/216 ,  G11B2220/90 ,  G11B2220/913 ,  G11B27/032

    摘要： A writing method suitable for practice with an apparatus having a rotary head assembly for the storage and retrieval of digital data on and from magnetic tape in cassette form or the like. The rotary head assembly is of the type having a rotary drum to which there are mounted a pair of magnetic read/write heads and a pair of magnetic monitor heads. The read/write heads alternately and overlappingly scan the magnetic tape for creating a series of slanting data tracks thereon. The monitor heads are spaced from the read/write heads not only circumferentially but also axially of the rotary drum for monitoring the data tracks being formed by the read/write heads after they have been overlapped by the subsequently formed tracks. The writing method is of particular utility in writing a block of user data over any selected target group of existing data tracks that have been written on the magnetic tape by another similar magnetic tape apparatus in which the axial distances between the read/write heads and the monitor heads may differ from those of the present apparatus. The block of user data is written over all but the first and last of the target group of existing data tracks, and dummy data is written over the first and the last.

    摘要翻译： 一种适用于具有旋转磁头组件的设备的书写方法，所述旋转磁头组件用于在磁带盒形式等中从磁带存储和检索数字数据。 旋转磁头组件是具有旋转磁鼓的类型，其上安装有一对磁性读/写磁头和一对磁性监视器磁头。 读/写头交替地和重叠地扫描磁带以在其上产生一系列倾斜的数据轨迹。 监视器头不仅在圆周方向上与读取/写入头部间隔开，而且与旋转磁鼓的轴向间隔开，用于监视由读/写头在由随后形成的磁道重叠之后形成的数据磁道。 写入方法在将用户数据块写入通过另一类似的磁带装置写入磁带上的现有数据磁道的任何选定目标组上是特别有用的，其中读/写磁头和读/写磁头之间的轴向距离 监视器头可能与本装置的不同。 用户数据块写入现有数据轨道的目标组中的所有第一个和最后一个，并且第一个和最后一个写入虚拟数据。

    Magnetic tape memory apparatus with axially displaced heads enabling after recording and verification
    54.
    发明授权
    Magnetic tape memory apparatus with axially displaced heads enabling after recording and verification 失效
    具有轴向位移磁头的磁带存储装置，可在记录和验证之后进行

    公开(公告)号：US5084786A

    公开(公告)日：1992-01-28

    申请号：US224655

    申请日：1988-07-27

    申请人： Kazutoshi Konno ,  Hidehumi Goto ,  Hiroshi Chiba ,  Tohru Sampei

    发明人： Kazutoshi Konno ,  Hidehumi Goto ,  Hiroshi Chiba ,  Tohru Sampei

    IPC分类号： G11B5/008 ,  G11B5/53 ,  G11B15/467 ,  G11B20/10 ,  G11B20/12

    CPC分类号： G11B15/4678 ,  G11B20/10 ,  G11B20/1209 ,  G11B5/008 ,  G11B5/0086 ,  G11B5/534 ,  G11B20/1211 ,  G11B2220/90 ,  G11B2220/913

    摘要： A helical scan tape apparatus including a first pair of magnetic heads having mutually different azimuth angles disposed on a peripheral face of a rotary drum at an angle interval of 180 degrees so as to oppose each other, a second pair of magnetic heads disposed on of the rotary drum so as to be perpendicular to a disposition direction of the first magnetic heads, a magnetic tape helically wound around the rotary drum so as to extend over an angle of 90 degrees, the tape being moved while the drum is controlled to rotate in synchronism with a reference signal, the first magnetic heads having a wider gap width than a track pitch of tracks recorded on the tape without providing a guard band for enabling azimuth recording of a data signal on the tracks, the data signal being recorded repeatedly into a particular recording area, wherein the first magnetic heads are used substantially for recording and the second magnetic heads are used substantially for reproduction and are positioned with a downward shift in the height direction of the drum equivalent to half of a scanning width of the second magnetic heads as compared with said first magnetic heads. Alternatively, the second magnetic heads may be disposed with a predetermine amount of shift so that an end of said second magnetic heads opposite to a tape traveling direction is located within a track recorded in advance by a predetermined value.

    摘要翻译： 一种螺旋扫描带装置，包括第一对磁头，其具有相互不同的方位角，以相对于180度的角度间隔设置在旋转磁鼓的外周面上;第二对磁头， 旋转鼓，以便垂直于第一磁头的配置方向，以旋转磁鼓的方式螺旋缠绕以便延伸超过90度的角度的磁带，当磁鼓被控制同步旋转时磁带被移动 具有参考信号，第一磁头具有比记录在磁带上的轨道的轨道间距更宽的间隙宽度，而不提供用于使得轨道上的数据信号的方位记录的保护带，数据信号被重复记录到特定的 记录区域，其中第一磁头用于基本上用于记录，并且第二磁头用于基本上用于再现，并且被定位 相对于所述第一磁头，h相对于第二磁头的扫描宽度的一半，鼓的高度方向的向下移动相当于第二磁头的扫描宽度的一半。 或者，第二磁头可以以预定量的偏移量设置，使得与磁带行进方向相反的所述第二磁头的端部位于预先记录的预定值的轨道内。

    Synchronizing system for digital apparatus
    56.
    发明授权
    Synchronizing system for digital apparatus 失效
    数字设备同步系统

    公开(公告)号：US4876719A

    公开(公告)日：1989-10-24

    申请号：US37382

    申请日：1987-04-10

    申请人： Taro Nakagami ,  Takeshi Fukami ,  Toshiro Terauchi

    发明人： Taro Nakagami ,  Takeshi Fukami ,  Toshiro Terauchi

    IPC分类号： H04L7/04 ,  G11B20/10 ,  G11B20/12 ,  G11B27/00 ,  G11B27/10 ,  G11B27/30

    CPC分类号： G11B27/3027 ,  G11B20/10 ,  G11B20/1262 ,  G11B27/002 ,  G11B27/10 ,  G11B20/1211 ,  G11B20/1217 ,  G11B20/1251 ,  G11B2020/10546 ,  G11B2220/213 ,  G11B2220/2545 ,  G11B2220/913

    摘要： A synchronizing system for use with a plurality of digital signal reproducers includes a plurality of digital signal reproducers, each having a digital I/O modulator, a digital I/O demodulator and a decoder; a digital signal multiplexer supplied with the output signal from the plurality of digital signal reproducers, and for producing a frame synchronizing signal, a plural channel of digital signals; the digital signal multiplexer including a clock pulse generator, a word synchronizing signal generator, a digital I/O modulator and a digital I/O demodulator. The corresponding digital I/O modulator and digital I/O demodulator are coupled to each other so as to synchronize the plurality of digital signal reproducers.

    摘要翻译： 一种与多个数字信号再现器一起使用的同步系统包括多个数字信号再现器，每个具有数字I / O调制器，数字I / O解调器和解码器; 提供有来自多个数字信号再现器的输出信号并产生帧同步信号的数字信号多路复用数字信号; 数字信号多路复用器包括时钟脉冲发生器，字同步信号发生器，数字I / O调制器和数字I / O解调器。 相应的数字I / O调制器和数字I / O解调器彼此耦合，以便同步多个数字信号再现器。

    Digital signal reproducing apparatus
    57.
    发明授权
    Digital signal reproducing apparatus 失效
    数字信号再现装置

    公开(公告)号：US4819090A

    公开(公告)日：1989-04-04

    申请号：US103921

    申请日：1987-10-01

    申请人： Kazuo Hikawa

    发明人： Kazuo Hikawa

    IPC分类号： G11B20/10 ,  G11B20/12 ,  G11B27/30 ,  G11B5/09

    CPC分类号： G11B20/10527 ,  G11B20/1208 ,  G11B27/3063 ,  G11B20/1211 ,  G11B2020/10546 ,  G11B2220/90 ,  G11B2220/913

    摘要： A digital signal reproducing apparatus comprises a block address counter which is reset immediately before reproduction of a subcode region on a magnetic tape and a PCM data region to start a counting operation therefrom, and the counting operation of the block address counter is stopped when each of the subcode region and the PCM data region ends, so that the reproduced block address can be written into a random access memory while correcting the block address without the need of a decoding circuit.

    摘要翻译： 一种数字信号再现装置，包括一个块地址计数器，该块地址计数器立即在磁带上的子代码区域再现之前被复位，并且PCM数据区域被重新开始计数操作，并且当每个块地址计数器的计数操作 子码区域和PCM数据区域结束，使得可以在不需要解码电路的同时校正块地址的同时将再现的块地址写入随机存取存储器。

    Apparatus for recording digital data of various kinds on a slant track of a recording tape
    58.
    发明授权
    Apparatus for recording digital data of various kinds on a slant track of a recording tape 失效
    用于在记录带的倾斜轨道上记录各种数字数据的装置

    公开(公告)号：US4672480A

    公开(公告)日：1987-06-09

    申请号：US669857

    申请日：1984-11-09

    申请人： Kaichi Yamamoto

    发明人： Kaichi Yamamoto

    IPC分类号： G11B5/008 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/00 ,  G11B27/30 ,  G11B27/32 ,  G11B5/09

    CPC分类号： G11B20/10527 ,  G11B20/1209 ,  G11B20/1809 ,  G11B27/005 ,  G11B27/3027 ,  G11B27/32 ,  G11B27/322 ,  G11B5/00873 ,  G11B5/00878 ,  G11B20/1211 ,  G11B2020/10546 ,  G11B2220/90

    摘要： Digital data is recorded on a slant track of a magnetic tape by a rotary head, in which the sampling frequency of the digital data can be changed in accordance with the nature of the digital data. The recording apparatus comprises a memory for writing the digital data in response to an input clock signal which is synchronized with the sampling frequency and reading the digital data therefrom in response to a system clock signal; and a circuit for converting the digital data read out from the memory into a data block having such a capacity that the data block can be recorded during one scan of the rotary head. Even when the data rate of the input digital signal is unclear, if the data rate lies within a range where the buffer memory does not overflow, the apparatus can continuously record the input digital signal. Thus, the apparatus can easily interface with an external computer.

    摘要翻译： 数字数据通过旋转磁头记录在磁带的倾斜磁道上，数字数据的采样频率可以根据数字数据的性质而改变。 记录装置包括：响应于与采样频率同步并响应于系统时钟信号从其读取数字数据的输入时钟信号来写入数字数据的存储器; 以及用于将从存储器读出的数字数据转换成具有在旋转磁头的一次扫描期间能够记录数据块的容量的数据块的电路。 即使当输入数字信号的数据速率不清楚时，如果数据速率处于缓冲存储器不溢出的范围内，则设备可以连续记录输入的数字信号。 因此，该装置可以容易地与外部计算机接口。

    METHOD OF MAKING A MULTI-CHANNEL TIME BASED SERVO TAPE MEDIA
    60.
    发明申请
    METHOD OF MAKING A MULTI-CHANNEL TIME BASED SERVO TAPE MEDIA 失效
    制作多通道时基伺服带介质的方法

    公开(公告)号：US20110286126A1

    公开(公告)日：2011-11-24

    申请号：US13113598

    申请日：2011-05-23

    申请人： Matthew P. Dugas

    发明人： Matthew P. Dugas

    IPC分类号： G11B5/09

    CPC分类号： G11B5/23 ,  G11B5/127 ,  G11B5/1276 ,  G11B5/193 ,  G11B5/232 ,  G11B5/235 ,  G11B5/29 ,  G11B5/295 ,  G11B5/3116 ,  G11B5/4893 ,  G11B5/584 ,  G11B20/1211 ,  G11B20/1217 ,  Y10T29/49055 ,  Y10T29/49057

    摘要： A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.

    摘要翻译： 通过从相对的铁素体块形成衬底来制造薄膜磁记录头，所述铁氧体块在它们之间具有陶瓷构件。 然后将该结构切成多个柱，其中每个柱具有铁素体/陶瓷组合。 每列表示完成的头中的单个通道。 然后切割一块陶瓷以匹配柱状结构，并将两个结合在一起。 然后将接合结构切割或研磨直到形成头部，其中陶瓷设置在每个通道之间。 然后将铁氧体背隙添加到每个通道，使磁通路径的磁阻最小化。 该薄膜在头部被图案化以优化各种通道配置。