公开(公告)号：WO1996038839A1

公开(公告)日：1996-12-05

申请号：PCT/US1996007626

申请日：1996-05-23

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  MATHEWS, Harlan ,  MCNEIL, Michael ,  BLATCHLEY, Michael, A.

IPC: G11B05/02

CPC classification number: G11B5/012 ,  G11B5/09 ,  G11B9/00

Abstract: As depicted in the Figure, a resonant frequency control circuit (18) communicates with a head (14) of a disk drive and a read/write channel (22). The resonant frequency control circuit (18) is useful in achieving peaking of a readback signal generated by reading data from a magnetic disk (10). The read/write channel (22) includes an equalizer circuit for enhancing equalization of the readback signal. A controller (76) communicates with the read/write channel (22) and the resonant frequency control circuit (18) for, in one embodiment, selectively adding capacitance to that capacitance which is present in the read element (16) of the head (14). By controlling the resonant frequency, this desired signal peaking can be achieved, which is related to the frequencies of the coded data on the disk (10).

Abstract translation: 如图所示，谐振频率控制电路（18）与盘驱动器的头部（14）和读/写通道（22）通信。 谐振频率控制电路（18）可用于实现通过从磁盘（10）读取数据而产生的回读信号的峰化。 读/写通道（22）包括用于增强回读信号的均衡的均衡器电路。 在一个实施例中，控制器（76）与读/写通道（22）和谐振频率控制电路（18）进行通信，在一个实施例中，选择性地将电容添加到头部的读取元件（16）中存在的电容 14）。 通过控制谐振频率，可以实现与磁盘（10）上的编码数据的频率相关的期望的信号峰化。

公开(公告)号：WO1996028811A1

公开(公告)日：1996-09-19

申请号：PCT/US1996003179

申请日：1996-03-07

Applicant: SYQUEST TECHNOLOGY, INC.

Inventor： SYQUEST TECHNOLOGY, INC. ,  SUN, Kai, C., K. ,  HERBST, James, A. ,  KIADEH, Mansur, B. ,  CHANG, Chih-Hsiung

IPC: G11B05/02

CPC classification number: G11B5/59688 ,  G11B5/012 ,  G11B5/02 ,  G11B5/024 ,  G11B5/4886 ,  G11B5/5526 ,  G11B5/5534 ,  G11B5/59627 ,  G11B5/59644 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B23/0302 ,  G11B23/0303 ,  G11B23/031 ,  G11B23/0318

Abstract: A higher-capacity disk drive system (101) and a higher-capacity removable disk cartridge (106) adapted for downward compatibility with older, lower-capacity disk drive systems, wherein a unique control format (208) is stored on higher-capacity removable disk cartridges (106) to distinguish them from older, lower-capacity removable disk cartridges (104) and thereby to facilitate cartridge capacity recognition by the higher-capacity disk drive system (101). Upon recognizing the capacity of an inserted removable disk cartridge, the higher-capacity disk drive system (101) can read and write data to the removable disk cartridge such that data which it stores on a lower-capacity removable disk cartridge (104) may be read by lower-capacity disk drive systems.

Abstract translation: 更高容量的磁盘驱动器系统（101）和更高容量的可移动磁盘盒（106），适于与较旧的较低容量磁盘驱动器系统向下兼容，其中独特的控制格式（208）存储在较高容量可移动 磁盘盒（106）以将其与较旧的较低容量的可移动磁盘盒（104）区分开，从而便于高容量磁盘驱动器系统（101）的磁带盒容量识别。 在识别插入的可移动磁盘盒的容量时，高容量磁盘驱动器系统（101）可以将数据读取和写入到可移动磁盘盒，使得其存储在低容量可移动磁盘盒（104）上的数据可以是 由低容量磁盘驱动器系统读取。

公开(公告)号：WO1995012195A1

公开(公告)日：1995-05-04

申请号：PCT/JP1994001788

申请日：1994-10-25

Applicant: SONY CORPORATION ,  TAKAHASHI, Tomoyuki

Inventor： SONY CORPORATION

IPC: G11B05/02

CPC classification number: G11B5/4833 ,  G11B5/4826 ,  G11B5/6005 ,  G11B11/10534 ,  G11B11/1055 ,  G11B11/10576 ,  G11B11/1058

Abstract: A magnetic head which is slid on a magneto-optical recording medium for recording information signals. The magnetic head comprises a magnetic core; holes for receiving the core; recesses for receiving coils formed around the holes; a bobbin having one end formed integrally with a flange section perpendicular to the length direction of the magnetic core; and a sliding body having a fitting hole with one opened end for fitting the magnetic core and bobbin and a sliding surface which is slid on the magneto-optical recording medium at least at the peripheral surface or one surface of the flange section of the bobbin fitted to the fitting hole. In addition, an engaging section is formed on either the bobbin or sliding body and engaged section on either the sliding body or bobbin. When the engaging and engaged sections are engaged with each other, the bobbin and sliding body can be united in one body and, accordingly, the magnetic head can be assembled without using any bonding agent.

Abstract translation: 磁头，用于在用于记录信息信号的磁光记录介质上滑动。 磁头包括磁芯; 用于接收核心的孔; 用于接收围绕孔形成的线圈的凹部; 一个线轴，其一端与垂直于磁芯的长度方向的凸缘部分一体地形成; 以及滑动体，其具有一个具有一个开口端的装配孔，用于装配磁芯和线轴，以及滑动表面，其至少在线轴的凸缘部分的外周表面或一个表面上滑动到磁光记录介质上 到装配孔。 此外，在线轴或滑动体上的接合部分和滑动体或线轴上的接合部分上形成接合部分。 当接合和接合部分彼此接合时，线轴和滑动体可以结合在一体中，因此，可以组装磁头而不使用任何粘合剂。

公开(公告)号：WO1989012293A1

公开(公告)日：1989-12-14

申请号：PCT/US1989002103

申请日：1989-05-16

Applicant: PLOCH, Louis, W.

IPC: G11B05/02

CPC classification number: G10H1/0058 ,  G11B20/10 ,  G11B27/3027

Abstract: A real time digital transmission speed conversion system employs a method of recording high transmission rate serial format data byte groups of given density onto a recording medium (16). The method includes steps of converting each high transmission rate serial format data byte group into a corresponding low transmission rate serial data byte group in real time (22, 24, 26, 28, 30, 32, 35, 36, 42); and recording the lower transmission rate serial data byte groups in real time, at a density higher than the given density (34, 39, 44). Additionally, the system employs a recording medium having digital data stored thereon in a format that includes at least two initial synchronization bytes (SYN), followed by one or more bytes signifying the start of a record of an event (SOR), followed by one or more groups of at least one byte each of data relating to the specific event (D1), followed by one or more bytes signifying the end of the record of the event (EOR).

Abstract translation: 实时数字传输速度转换系统采用将具有给定密度的高传输速率串行格式数据字节组记录到记录介质（16）上的方法。 该方法包括以下步骤：将每个高传输速率串行格式数据字节组实时转换成对应的低传输速率串行数据字节组（22,24,26,28,30,32,35,36,42）; 并以高于给定密度（34,39,44）的密度实时记录较低传输速率的串行数据字节组。 另外，该系统采用具有数字数据的记录媒体，其格式包括至少两个初始同步字节（SYN），其后是表示事件记录（SOR）开始的一个或多个字节，随后是一个 或更多个与特定事件（D1）相关的每个数据的至少一个字节的组，随后是表示事件记录结束（EOR）的一个或多个字节。

公开(公告)号：WO1984002219A1

公开(公告)日：1984-06-07

申请号：PCT/JP1983000424

申请日：1983-12-01

Applicant: SONY CORPORATION

Inventor： SONY CORPORATION ,  NUMAKURA, Toshihiko

IPC: G11B05/02

CPC classification number: H04N9/898 ,  G11B20/06 ,  G11B20/10527 ,  H04N5/78213 ,  H04N9/802 ,  H04N9/8355

Abstract: A magnetic recording/reproducing apparatus is constructed so that first and second signals are recorded in a magnetic layer of a magnetic recording medium (1) in a superposed state and are reproduced by magnetic heads (HV1, HV2 and HA1, HA2), respectively. According to this invention, the recording and reproduction of the first signal are barely affected by the second signal, even if it has a wide band-width and a high level. Accordingly, when the first signal includes a low-band converted color signal and a modulated luminance signal, and the second signal is a modulated aural signal, it is possible to record the signals without limiting the level of the modulated aural signal, and the S/N ratio of the aural signal can be improved. In addition, the low-band converted color signal and the modulated luminance signal can be recorded and reproduced by an ordinary system, so that the video signals of the apparatus in accordance with this invention are compatible with an ordinary system.

Abstract translation: 磁记录/再现装置被构造成使得第一和第二信号被记录在叠加状态的磁记录介质（1）的磁性层中，并被磁头（HV1，HV2和HA1，HA2）再现。 根据本发明，第一信号的记录和再现几乎不受第二信号的影响，即使它具有宽带宽和高电平。 因此，当第一信号包括低频带转换颜色信号和调制亮度信号，并且第二信号是调制听觉信号时，可以在不限制调制听觉信号的电平的情况下记录信号，并且S 听觉信号的/ N比可以提高。 此外，低频转换色信号和调制亮度信号可以由普通系统记录和再现，使得根据本发明的装置的视频信号与普通系统兼容。

公开(公告)号：WO1984001656A1

公开(公告)日：1984-04-26

申请号：PCT/AU1983000141

申请日：1983-10-05

Applicant: THE COMMONWEALTH OF AUSTRALIA care of THE ... ,  HAMILTON, Neil, Robert

Inventor： THE COMMONWEALTH OF AUSTRALIA care of THE ...

IPC: G11B05/02

CPC classification number: G11B20/24

Abstract: A system for recording and replaying information in which noise caused by vibration of the system is eliminated. Two channels are used, one to record the input information, and the second to record a constant input signal. The first channel signal is then divided by the second channel signal to give an output signal free of vibration induced noise.

Abstract translation: 用于记录和重放由系统的振动引起的噪声的信息的系统被消除。 使用两个通道，一个用于记录输入信息，另一个用于记录恒定的输入信号。 然后将第一通道信号除以第二通道信号，以给出没有振动引起的噪声的输出信号。

公开(公告)号：EP0204154A3

公开(公告)日：1988-11-09

申请号：EP86106014

申请日：1986-05-02

Applicant: Ginkel, Peter

Inventor： Ginkel, Peter

IPC: G06F12/14 ,  G11B05/02

CPC classification number: G06F21/80 ,  G11B20/00086 ,  G11B20/00094

Abstract: 5A method of protecting machine readable signals recorded on magnetic recording media from unauthorized duplication and use. The signals to be protected are recorded on an authorized magnetic recording medium having a relatively high coercivity. An attempt is made by the computer to alter predetermined validating signals on a recording medium presented for use in the computer. The computer is disabled from further using the signals recorded on the recording medium if the validating signals cannot be read back. If the protected signals have been copied onto an unauthorized recording medium having a relatively lower coercivity and such unauthorized recording medium is presented to the computer, the validating signals will be alterable. Thus, an unauthorized copy of the protected signals cannot be used since the system detects that the validating signals have been changed and disables the system.

Abstract translation: 一种保护记录在磁记录媒体上的机读信号免受未经授权复制和使用的方法。 待保护的信号被记录在具有较高矫顽力的授权磁记录介质上。 计算机尝试改变呈现在计算机中的记录介质上的预定的验证信号。 如果无法读取验证信号，计算机将无法进一步使用记录在记录介质上的信号。 如果受保护的信号已被复制到具有相对较低的矫顽力的未经授权的记录介质上，并且将这种未经授权的记录介质呈现给计算机，则验证信号将是可变的。 因此，由于系统检测到验证信号已被更改并且禁用系统，所以不能使用受保护信号的未授权拷贝。

公开(公告)号：EP0154307A3

公开(公告)日：1987-12-23

申请号：EP85102282

申请日：1985-02-28

Applicant: SONY CORPORATION

Inventor： Imakoshi, Shigeyoshi ,  Suyama, Hideo ,  Soda, Yutaka ,  Fukuyama, Munekatsu ,  Iida, Yasuhiro

IPC: G11B05/39 ,  G11B05/02

CPC classification number: G11B5/02 ,  G11B5/3903 ,  G11B2005/0016

Abstract: A magnetoresistance effect type magnetic transducer head apparatus comprises a magnetoresistance effect sensing element (5), means (f c ) for applying high-frequency magnetic field to the sensing element (5), means (16, 19) for taking-out output signal from the sensing element (5), a filter (21) for taking-out the high-frequency component of the output, and another filter (20) for rectifying the output and taking-out the low-frequency component. The magnetic head apparatus may be constituted as digital circuit and a multi-channel apparatus can be implemented.

公开(公告)号：EP0173942A3

公开(公告)日：1987-12-02

申请号：EP85110712

申请日：1985-08-26

Applicant: SONY CORPORATION

Inventor： Imakoshi, Shigeyoshi ,  Fukuyama, Munekatsu ,  Suyama, Hideo ,  Souda, Yutaka

IPC: G11B05/00 ,  G11B05/02 ,  G11B05/39

CPC classification number: G11B5/3903 ,  G11B5/03 ,  G11B5/3945

Abstract: A magnetoresistance effect type magnetic head apparatus has a magnetoresistance effect sensing element (5), means (3) for applying a bias magnetic field to the sensing element (5), a detecting circuit (81) for obtaining a detecting signal, a low pass filter (32) for deriving an unwanted signal component from the detecting signal, and means for applying a cancelling magnetic field to the sensing element (5) so as to eliminate the unwanted signal component. An additional sensing element (25) may also be provided to detect an external magnetic field (H N ), and a corresponding signal is generated which is applied to a first sensing element (5) so as to cancel the effects of the external magnetic field (H N ).

公开(公告)号：EP0143654A3

公开(公告)日：1987-09-02

申请号：EP84308256

申请日：1984-11-28

Applicant: Matsushita Electric Industrial Co., Ltd.

Inventor： Tomita, Masao

IPC: G11B05/02 ,  G11B20/10 ,  G11B05/008 ,  H04N05/782

CPC classification number: G11B5/0086 ,  G11B5/02 ,  H04N5/78213 ,  H04N9/802

Abstract: A magnetic recording and reproducing method, applicable to a magnetic recording and reproducing apparatus such as a video tape recorder, comprises the steps of recording a first signal in a magnetic layer (6b) of a magnetic tape by a first head, recording a second signal which is preferably a digital signal in a shallower portion (6a) of the first signal recorded magnetic layer by a second head having a different azimuth from that of the first head. The width of the shallower portion (6a) is preferably narrower than the width of the first signal recorded magnetic layer. The recorded first and second signals are reproduced by heads having different azimuth from each other, respectively, so as not to interfere with each other.