公开(公告)号：EP0407970A3

公开(公告)日：1991-06-05

申请号：EP90113159.9

申请日：1990-07-10

Applicant: HITACHI, LTD.

Inventor： Higuchi, Shigemitsu ,  Suga, Atsuo ,  Inaba, Yuji ,  Aizawa, Toshiro

IPC: H04N5/93 ,  H04N5/95 ,  G11B15/43 ,  G11B15/467

CPC classification number: H04N5/926 ,  G11B15/43 ,  G11B15/4671 ,  G11B20/00007 ,  H04N5/783 ,  H04N5/919 ,  H04N9/802

Abstract: For the purpose of data compression and expansion in the playback mode reproducing data including video data and audio data recorded on a magnetic tape (2), a relative speed signal is generated from a circuit (86) on the basis of the moving speed of the magnetic tape and the rotation speed of a head drum (1), and the character­istic of the recorded data is controlled according to this relative speed signal. The tension of the magnetic tape is detected by a circuit (97), and the phase difference between the detected tape tension signal and a reel rotation speed command signal is detected by a circuit (98) so as to control the tape tension according to the detected phase difference. When a target value of the drum rotation speed is changed, a drum drive signal is changed stepwise at a predetermined time interval, and the amount of delay of a drum rotation reference signal delayed according to a signal indicative of the rotation speed of a capstan (8) is changed, so as to determine the range in which both the capstan rotation speed and the drum rotation speed can be changed. Interfaces (17, 76) are disposed between a system controller (16) and a pitch controller (77) so as to control the tone pitch of the audio signal according to the capstan rotation speed signal.

公开(公告)号：EP0096418A2

公开(公告)日：1983-12-21

申请号：EP83105628.8

申请日：1983-06-08

Applicant: HITACHI, LTD.

Inventor： Higuchi, Shigemitsu ,  Konno, Kazutoshi ,  Sampei, Tohru

IPC: G11B5/27 ,  G11B5/012

CPC classification number: G11B5/2655 ,  G11B5/4886

Abstract: A magnetic head (5) suitable for use in a magnetic disk. In a magnetic head in accordance with the present invention, a read/write head (20) and an erase head (10) are placed side by side in the rotation direction of the magnetic disk. A gap (30) in the read/write head is placed at a distance of from a pair of gaps (40a, 40b) in the erase head. In addition, the read/write gap in the read/write head is deviated by a distance L in the external circumference direction with respect to a pair of erase gaps in the erase head.

公开(公告)号：EP0407970A2

公开(公告)日：1991-01-16

申请号：EP90113159.9

申请日：1990-07-10

Applicant: HITACHI, LTD.

Inventor： Higuchi, Shigemitsu ,  Suga, Atsuo ,  Inaba, Yuji ,  Aizawa, Toshiro

IPC: H04N5/93 ,  H04N5/95 ,  G11B15/43 ,  G11B15/467

CPC classification number: H04N5/926 ,  G11B15/43 ,  G11B15/4671 ,  G11B20/00007 ,  H04N5/783 ,  H04N5/919 ,  H04N9/802

Abstract: For the purpose of data compression and expansion in the playback mode reproducing data including video data and audio data recorded on a magnetic tape (2), a relative speed signal is generated from a circuit (86) on the basis of the moving speed of the magnetic tape and the rotation speed of a head drum (1), and the character­istic of the recorded data is controlled according to this relative speed signal. The tension of the magnetic tape is detected by a circuit (97), and the phase difference between the detected tape tension signal and a reel rotation speed command signal is detected by a circuit (98) so as to control the tape tension according to the detected phase difference. When a target value of the drum rotation speed is changed, a drum drive signal is changed stepwise at a predetermined time interval, and the amount of delay of a drum rotation reference signal delayed according to a signal indicative of the rotation speed of a capstan (8) is changed, so as to determine the range in which both the capstan rotation speed and the drum rotation speed can be changed. Interfaces (17, 76) are disposed between a system controller (16) and a pitch controller (77) so as to control the tone pitch of the audio signal according to the capstan rotation speed signal.

Abstract translation: 为了在再现模式中的数据压缩和扩展的目的，再现包括记录在磁带（2）上的视频数据和音频数据的数据，基于电路（86）的移动速度从电路（86）产生相对速度信号 磁带和磁头鼓（1）的旋转速度，根据该相对速度信号控制记录数据的特性。 通过电路（97）检测磁带的张力，并通过电路（98）检测检测到的带张力信号和卷轴转速指令信号之间的相位差，以便根据 检测相位差。 当滚筒旋转速度的目标值改变时，滚筒驱动信号以预定的时间间隔逐步改变，并且鼓旋转基准信号的延迟量根据表示主导体的转速的信号而延迟（ 8）被改变，以便确定可以改变主导轮转速和转鼓旋转速度两者的范围。 接口（17,76）设置在系统控制器（16）和音调控制器（77）之间，以便根据主导轮转速信号来控制音频信号的音调。

公开(公告)号：EP1020855A1

公开(公告)日：2000-07-19

申请号：EP00300047.8

申请日：2000-01-06

Applicant: HITACHI, LTD.

Inventor： Ono, Hiroaki ,  Higuchi, Shigemitsu

IPC: G11B19/12 ,  G11B23/28 ,  G11B23/30 ,  G11B20/00

CPC classification number: G11B19/12 ,  G11B7/0037 ,  G11B23/28 ,  G11B23/34

Abstract: Enhancement of the operational capability of a disk mounted with a storage for recording management information and catalog information for main information is intended.
Recording/reproduction of information into or from the storage on the disk is performed before the disk starts to turn. For instance, a disk fitting aid member is arranged in a recording/reproduction apparatus, and reproduction or recording of management information and catalog information for main information recorded or to be recorded in the storage is started triggered by the operation of the fitting aid member. Or, for instance, a recording/reproduction apparatus is mounted with a disk detector, with which the mounting of the disk on a tray can be detected, and the recording/reproduction of information into or from the storage is started triggered by this detection. As information can be recorded or reproduced into or from the storage before the disk starts turning, operational capability is enhanced.

Abstract translation: 旨在提高安装有用于记录主要信息的管理信息和目录信息的存储器的盘的操作能力。 在磁盘开始转动之前执行信息到磁盘上的存储器的记录/再现。 例如，在记录/再现装置中布置盘配件辅助构件，并且通过装配辅助构件的操作开始触发记录或记录在存储器中的主要信息的管理信息和目录信息的再现或记录。 或者，例如，记录/再现装置安装有盘检测器，通过该盘检测器可以检测盘在盘上的安装，并且通过该检测开始触发信息到存储器中或从存储器的记录/再现。 由于信息可以在磁盘开始转动之前记录或再现到存储器中，所以可以提高操作能力。

公开(公告)号：EP0929066A2

公开(公告)日：1999-07-14

申请号：EP99300187.4

申请日：1999-01-12

Applicant: HITACHI, LTD.

Inventor： Ishitobi, Tatsuya ,  Ono, Hiroaki ,  Ito, Tamotsu ,  Higuchi, Shigemitsu

IPC: G11B7/00 ,  G11B27/036

CPC classification number: G11B27/036 ,  G11B7/0045 ,  G11B7/006 ,  G11B11/10595 ,  G11B27/329 ,  G11B2220/20 ,  G11B2220/2525

Abstract: An information recording and control method and apparatus for a recording medium disc having information previously recorded thereon. New information is overwritten at least a portion of the previously recorded information in a recording area of the recording medium disc. Information on the new information is cataloged as control information on the recording medium disc. Residual information which is part of the previously recorded information which is not overwritten by the new information is treated as new information and information on the residual information which is treated as new information is cataloged as control information on the recording medium disc.

Abstract translation: 一种用于记录介质盘的信息记录和控制方法及装置，其具有先前记录的信息。 新信息在记录介质盘的记录区域中覆盖先前记录的信息的至少一部分。 关于新信息的信息在记录介质盘上被编目为控制信息。 作为未被新信息覆盖的先前记录的信息的一部分的剩余信息被视为新信息，并且将被视为新信息的残留信息的信息作为控制信息编辑在记录介质盘上。

公开(公告)号：EP0096418A3

公开(公告)日：1984-11-14

申请号：EP83105628

申请日：1983-06-08

Applicant: HITACHI, LTD.

Inventor： Higuchi, Shigemitsu ,  Konno, Kazutoshi ,  Sampei, Tohru

IPC: G11B05/27 ,  G11B05/012 ,  G11B05/48

CPC classification number: G11B5/2655 ,  G11B5/4886

Abstract: A magnetic head (5) suitable for use in a magnetic disk. In a magnetic head in accordance with the present invention, a read/write head (20) and an erase head (10) are placed side by side in the rotation direction of the magnetic disk. A gap (30) in the read/write head is placed at a distance of from a pair of gaps (40a, 40b) in the erase head. In addition, the read/write gap in the read/write head is deviated by a distance L in the external circumference direction with respect to a pair of erase gaps in the erase head.

公开(公告)号：EP0929066A3

公开(公告)日：2002-01-09

申请号：EP99300187.4

申请日：1999-01-12

Applicant: Hitachi, Ltd.

Inventor： Ishitobi, Tatsuya ,  Ono, Hiroaki ,  Ito, Tamotsu ,  Higuchi, Shigemitsu

IPC: G11B7/00 ,  G11B27/036 ,  G11B27/32 ,  G11B27/10

CPC classification number: G11B27/036 ,  G11B7/0045 ,  G11B7/006 ,  G11B11/10595 ,  G11B27/329 ,  G11B2220/20 ,  G11B2220/2525

Abstract: An information recording and control method and apparatus for a recording medium disc having information previously recorded thereon. New information (105) is overwritten or at least a portion of the previously recorded information (103,104) in a recording area of the recording medium disc. Information on the new information is cataloged as control information (101) on the recording medium disc. Residual information which is part of the previously recorded information which is not overwritten by the new information is treated as new information and information on the residual information which is treated as new information is cataloged as control information on the recording medium disc.

公开(公告)号：EP0997892A1

公开(公告)日：2000-05-03

申请号：EP99308279.1

申请日：1999-10-20

Applicant: Hitachi, Ltd.

Inventor： Taguchi, Hirofumi ,  Higuchi, Shigemitsu

IPC: G11B7/24 ,  G06K19/077

CPC classification number: H01Q1/2225 ,  G06K19/045 ,  G11B7/24 ,  G11B19/12 ,  G11B23/0042 ,  G11B23/286 ,  G11B23/34 ,  H01Q1/22 ,  H01Q1/38 ,  H01Q7/00

Abstract: For providing a recording disc, on which information can be renewed by signals, such as electromagnetic waves, and further with which unnecessary vibration due to an eccentricity in center of gravity of the disc can be reduced when the disc is rotated at high rotation velocity, wherein there are positioned an antenna portion (12), which enables to receive information and/or electric power on the disc, and a memory chip(s) (13) for transmitting the information received to the disc and for renewing that information. Further, for reducing the eccentricity in center of gravity of the disc, a counter balance (14) and/or a label portion and/or the antenna portion and/or an other memory chip(s) and/or a battery are positioned so that they are in balance to the memory chip(s) on the disc.

Abstract translation: 为了提供一种记录盘，通过诸如电磁波的信号可以更新信息，并且当盘以高旋转速度旋转时，可以减少由于盘的重心偏心引起的不必要的振动， 其中定位有天线部分（12），其能够接收盘上的信息和/或电力;以及存储器芯片（13），用于将接收到的信息发送到盘并用于更新该信息。 此外，为了减小盘的重心偏心，将平衡（14）和/或标签部分和/或天线部分和/或其它存储器芯片和/或电池定位成 它们与盘上的存储芯片平衡。

公开(公告)号：EP0996124A1

公开(公告)日：2000-04-26

申请号：EP99308317.9

申请日：1999-10-21

Applicant: HITACHI, LTD.

Inventor： Ono, Hiroaki ,  Higuchi, Shigemitsu ,  Sano, Kenji

IPC: G11B7/24 ,  G11B23/30

CPC classification number: G06K19/045 ,  G06K7/10336 ,  G06K19/04 ,  G06K19/07749 ,  G11B7/24 ,  G11B23/0042 ,  G11B23/30 ,  G11B27/11 ,  G11B2220/213 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B2220/657

Abstract: An optical recording disk intended only for the reproduction of a main information and used by an information management system has the attachment of a memory (3) in which data for the management of the main information is written and read out easily and reliably. The memory has associated electromagnetic coupling means (10,11) for transacting the record management data with and receiving power from a recording/reproduction apparatus. The electromagnetic coupling means is built in the memory or disposed in an annular or spiral form on the disk. The transmission frequency band for data transaction and power supply is set outside the main information reproduction frequency band. The memory is disposed in or on an appropriate plastic layer of the disk depending on the usage of the disk, and located in the inner or outer section of the recording medium forming area on the disk depending on the transmission band. This low-cost optical disk can be manufactured at a high reliability and high yield.

Abstract translation: 仅用于再现主要信息并由信息管理系统使用的光记录盘具有可以容易且可靠地写入和读出用于管理主信息的数据的存储器（3）的附件。 存储器具有相关联的电磁耦合装置（10,11），用于将记录管理数据与来自记录/再现装置的功率进行交互。 电磁耦合装置内置在存储器中或以环形或螺旋形式设置在盘上。 用于数据交易和电源的传输频带设置在主信息再现频带之外。 存储器根据盘的使用被布置在盘的适当的塑料层中或其上，并且根据传输带位于盘上的记录介质形成区域的内部或外部。 可以以高可靠性和高产率制造这种低成本光盘。