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1. 发明公开

EP1030300A3 Magnetic recording and reproducing apparatus 审中-公开
标题翻译：一种磁记录和再现装置
公开(公告)号：EP1030300A3
公开(公告)日：2003-02-05
申请号：EP00300478.5
申请日：2000-01-21
申请人： Hitachi, Ltd.
发明人： Amada, Nobutaka , Okamoto, Hiroo , Nishijima, Hideo
IPC分类号： G11B15/467 , G11B5/008 , G11B15/18 , G11B15/12 , G11B5/53 , H04N9/79
CPC分类号： G11B5/534 , G11B5/0086 , G11B5/00865 , G11B5/00891 , G11B5/09 , G11B15/125 , G11B15/1875 , G11B15/4672 , G11B15/4675 , H04N9/7921 , H04N9/7973 , H04N9/802
摘要： A magnetic recording and/or reproducing apparatus for recording and reproducing digital signals for long periods of time and high rate recording and reproduction, achieving a plurality of record/reproducing modes and further maintaining compatibility between apparatus with different head configurations wherein it comprises a digital recording means for recording digital signals on a helical track on magnetic tape utilizing a plurality of magnetic heads hailing a positive or a negative azimuth and arranged on a rotating drum, and a tracking control pulse record means to synchronize with the rotation period of a rotating drum and record a tracking control pulse CTL on the linear track on a magnetic tape, and a servo means to rotate the rotating drum at a specified speed and drive the magnetic tape at a rotation speed 1/K of the drive speed, and wherein the digital recording means records each K rotations of the rotating drum on two tracks, comprised of a first track having a positive azimuth angle and a second track having a negative azimuth angle, and the tracking control pulse record means records a CTL tracking control pulse signal at the point where a specified time has elapsed since recording in the valid region of the second track by the specified magnetic head having a negative azimuth angle as well as the point at each rotation of the rotating drum equivalent to that specified time.

2. 发明公开

EP0933762A3 Magnetic recording and/or reproducing apparatus 审中-公开
标题翻译：磁记录和/或再现装置
公开(公告)号：EP0933762A3
公开(公告)日：2002-03-20
申请号：EP99300793.9
申请日：1999-02-03
申请人： Hitachi, Ltd.
发明人： Okamoto, Hiroo , Amada, Nobutaka , Nishijima, Hideo , Yamazaki, Shigeru
IPC分类号： G11B15/18 , G11B5/008
CPC分类号： H04N9/7921 , G11B5/0086 , G11B5/00891 , G11B5/09 , G11B15/125 , G11B15/1875 , G11B15/4675 , G11B20/10 , G11B20/1209 , G11B27/005 , G11B27/30 , G11B27/3027 , G11B27/3063 , G11B2220/90 , H04N5/78263
摘要： A magnetic recording and/or reproducing apparatus has compatibility with a conventional analog signal recording/reproducing VTR and can realize an operation mode in which a digital signal is recorded and/or reproduced. During N-times long time recording, the travel speed of a magnetic recording medium (3) is set to 1/N of that during normal recording to perform recording every N scanning operations of a rotary head (1) and during N-times long time reproduction, the travel speed of the magnetic recording medium (3) is set to 1/N of that during normal recording and the travel of the magnetic recording medium (3) is controlled such that the level of a reproduction signal reproduced every N scanning operations of the rotary head (1) at a predetermined timing is maximized so as to reproduce a reproduction signal at that timing.

3. 发明公开

EP1030300A2 Magnetic recording and reproducing apparatus 审中-公开
标题翻译： Magnetisches Aufnahme- und Wiedergabe-Gerät
公开(公告)号：EP1030300A2
公开(公告)日：2000-08-23
申请号：EP00300478.5
申请日：2000-01-21
申请人： HITACHI, LTD.
发明人： Amada, Nobutaka , Okamoto, Hiroo , Nishijima, Hideo
IPC分类号： G11B15/467 , G11B5/008
CPC分类号： G11B5/534 , G11B5/0086 , G11B5/00865 , G11B5/00891 , G11B5/09 , G11B15/125 , G11B15/1875 , G11B15/4672 , G11B15/4675 , H04N9/7921 , H04N9/7973 , H04N9/802
摘要： A magnetic recording and/or reproducing apparatus for recording and reproducing digital signals for long periods of time and high rate recording and reproduction, achieving a plurality of record/reproducing modes and further maintaining compatibility between apparatus with different head configurations wherein it comprises a digital recording means for recording digital signals on a helical track on magnetic tape utilizing a plurality of magnetic heads hailing a positive or a negative azimuth and arranged on a rotating drum, and a tracking control pulse record means to synchronize with the rotation period of a rotating drum and record a tracking control pulse CTL on the linear track on a magnetic tape, and a servo means to rotate the rotating drum at a specified speed and drive the magnetic tape at a rotation speed 1/K of the drive speed, and wherein the digital recording means records each K rotations of the rotating drum on two tracks, comprised of a first track having a positive azimuth angle and a second track having a negative azimuth angle, and the tracking control pulse record means records a CTL tracking control pulse signal at the point where a specified time has elapsed since recording in the valid region of the second track by the specified magnetic head having a negative azimuth angle as well as the point at each rotation of the rotating drum equivalent to that specified time.
摘要翻译：一种用于长时间和高速率记录和再现数字信号的记录和再现的磁记录和/或再现装置，实现多种记录/再现模式，并进一步保持具有不同头配置的装置之间的兼容性，其中它包括数字记录用于使用多个磁头将数字信号记录在磁带上的螺线轨道上，该多个磁头具有正或负方位并且布置在旋转的滚筒上，以及跟踪控制脉冲记录装置，与旋转滚筒的旋转周期同步，在磁带上的线性轨迹上记录跟踪控制脉冲CTL，以及伺服装置，用于以特定速度旋转旋转滚筒，并以驱动速度的1 / K的速度驱动磁带，并且其中数字记录意味着将两个磁道上的旋转磁鼓的K个旋转记录在由具有正azi的第一磁道组成的两个磁道上并且跟踪控制脉冲记录装置在从第二轨道的有效区域中记录指定磁头后经过指定时间的点记录CTL跟踪控制脉冲信号具有负的方位角以及旋转鼓的每次旋转处的点等于该指定时间。

4. 发明公开

EP0849938A3 A magnetic recording/reproducing apparatus and the same equiped with an image sensor 失效
标题翻译：配备有图像传感器的磁记录/再现装置
公开(公告)号：EP0849938A3
公开(公告)日：1999-02-24
申请号：EP97122050.4
申请日：1997-12-15
申请人： Hitachi, Ltd. , Hitachi Video & Information System, Inc.
发明人： Watanabe, Katsuyuki , Nishijima, Hideo , Ono, Koichi , Nishizawa, Akihito , Hori, Kazuaki
IPC分类号： H04N5/00
CPC分类号： H04N5/772 , H04N9/83 , Y10S358/906
摘要： A magnetic recording/reproducing apparatus equipped with an image sensor, comprising:
a camera portion having an A/D converter for converting a signal from an image sensor into a digital signal and a first digital processor for receiving an output of said A/D converter and for digitally processing thereof; a VTR portion of a helical scan type mounting at least two or more of magnetic heads for recording/reproducing a FM modulated luminance signal and a low band converted chrominance signal; a second digital processor for processing an video signal of the VTR; and a switching circuit provided in a preceding stage of said A/D converter, whereby the signal from said image sensor, an external video signal and a reproduced signal from said magnetic heads are exchanged, the output of said A/D converter is inputted to said second digital processor, and a sampling clock of said A/D converter is exchanged to most profitable clock for the signal from said image sensor, the external video signal and the reproduced signal from the magnetic heads, respectively.

5. 发明公开

EP0600376A2 Magnetic recording/reproducing apparatus for carrying out high-speed reproduction with use of line memory 失效
标题翻译：磁性录制/由线存储器再现为实现高速复制品的装置。
公开(公告)号：EP0600376A2
公开(公告)日：1994-06-08
申请号：EP93119007.8
申请日：1993-11-25
申请人： HITACHI, LTD.
发明人： Okamoto, Kaneyuki , Nishijima, Hideo , Yukinobu, Tada , Kitade, Takeshi , Nakamoto, Toshio
IPC分类号： H04N5/783 , H04N5/956 , G11B15/467 , H04N9/896
CPC分类号： H04N5/956 , H04N5/783
摘要： A magnetic recording/reproducing apparatus provided with a circuit (25) for detecting a horizontal synchronization period in a reproduction signal, a circuit (26, 27, 28, 30) for generating a clock signal synchronized with a horizontal synchronizing signal reproduced, a circuit (29, 38) for controlling the clock signal generation circuit to change the frequency of the clock signal in accordance with the tape speed, a line memory (32) for storing line data of the reproduction signal, and a circuit (33, 36, 138) for controlling writing of data into the line memory and reading of data from the line memory on the basis of the clock signal with the horizontal synchronization period as a unit, wherein writing of data into the line memory is stopped or writing of data into another line memory provided separately is carried out in the case where writing of data into the line memory and reading of data from the line memory are started simultaneously at the time of backward reproduction, and wherein reading of data from the line memory previously subjected to reading is restarted while writing of data into the other line memory is carried out in the case where writing of data into the line memory and reading of data from the line memory are started simultaneously at the time of forward reproduction.
摘要翻译：一种磁记录/用于产生转载与水平同步信号同步的时钟信号再现提供有用于在再现信号，一个电路（26，27，28，30）检测的水平同步周期的电路（25）装置，电路（29，38），用于控制时钟信号生成电路与磁带速度来改变雅舞蹈的时钟信号的频率，一个行存储器（32），用于存储所述再生信号的线数据，和一个电路（33，36， 138），用于控制数据写入到行存储器和从与所述水平同步周期为单位的时钟信号的基础上，行存储器数据的读取，worin数据写入到行存储器被停止或数据写入到单独提供另一个行存储器中，其中数据到行存储器和从行存储器数据的读取写入在向后再现时同时开始的情况下进行的，和磨片从行存储器数据的纯读取预先进行读取而数据写入另一行存储器在数据到行存储器和从行存储器数据的读取写入在所述同时开始的情况下执行的重新启动进再现的时间。

6. 发明授权

EP0245745B1 Image processing system 失效
标题翻译：图像处理系统
公开(公告)号：EP0245745B1
公开(公告)日：1993-10-27
申请号：EP87106443.2
申请日：1987-05-04
申请人： HITACHI, LTD.
发明人： Okamoto, Kaneyuki , Nishijima, Hideo , Masuda, Michio , Ohtsubo, Hiroyasu , Ono, Koichi
IPC分类号： H04N5/45
CPC分类号： H04N5/45

7. 发明授权

EP0213549B1 Automatic tracking system for magnetic recording and reproducing apparatus 失效
标题翻译：用于磁记录和再现装置的自动跟踪系统
公开(公告)号：EP0213549B1
公开(公告)日：1991-11-06
申请号：EP86111532.7
申请日：1986-08-20
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Nishijima, Hideo , Okamoto, Kaneyuki , Goto, Katsuhiko , Usami, Hiroshi
IPC分类号： G11B5/588 , G11B5/584 , G11B21/10
CPC分类号： G11B15/4675

8. 发明公开

EP0097916A3 Power supply system for plural motors 失效
标题翻译：电动马达电源系统
公开(公告)号：EP0097916A3
公开(公告)日：1984-10-17
申请号：EP83106107
申请日：1983-06-22
申请人： HITACHI, LTD.
发明人： Nishijima, Hideo , Fukushima, Isao , Teshima, Tsunehiko , Kobori, Yasunori , Ito, Takayasu
IPC分类号： H02P05/46
CPC分类号： H02P5/68 , H02P5/60 , H02P6/04
摘要： Disclosed is a power supply system, in which a single variable voltage supply device (38) is used as a power source for a plurality of motors (24, 37; 45, 50) which are simultaneously or successively rotated, in which each motor is subjected to constant current driving by a current control device (18, 19, 20; 69, 70, 71) connected to the motor, and in which the variable voltage supply device is controlled so as to produce a voltage which is the sum of the highest one of the voltages required for driving the motors and necessary and minimum voltage with which all the current control devices are operable.

9. 发明公开

EP0091672A2 Characteristic switching circuit 失效
标题翻译： Netzwerkes的Schaltung zur Wahl des Frequenzganges。
公开(公告)号：EP0091672A2
公开(公告)日：1983-10-19
申请号：EP83103438.4
申请日：1983-04-08
申请人： Hitachi, Ltd. , HITACHI MICROCOMPUTER ENGINEERING LTD.
发明人： Fukushima, Isao , Kuwahara, Kazuyoshi , Itoigawa, Keiichi , Kobori, Yasunori , Nishijima, Hideo
IPC分类号： H03H11/04 , H03H19/00
CPC分类号： H03H19/004
摘要： A time constant circuit capable of switching the characteristic, which is realized by a combination of an equivalent resistor made up of a switched capacitor and an ordinary capacitor, comprises a capacitor (20, 26, 27) of the switched capacitor or the time constant circuit connected in parallel to a series circuit including a switching device (29, 51, 69) and an additional capacitor (28, 47, 52, 56, 58). The characteristic is switched by turning on and off the additional capacitor by the switching device. The direct connection of a plurality of equivalent resistors with a plurality of switched capacitors and ordinary capacitors makes up an equalizer. The capacitor making up a switched capacitor is connected with a switching device and an additional capacitor so that the frequency characteristic of the equalizer is switchable by turning on and off the switching device. Each of the capacitors making up the switched capacitors, the capacitors making up the time constant circuits and the additional capacitors has an end thereof grounded without fail. All the elements are thus capable of being formed in the same integrated circuits.
摘要翻译：能够切换通过由开关电容器和普通电容器构成的等效电阻的组合实现的特性的时间常数电路包括开关电容器的电容器或与串联电路并联连接的时间常数电路包括开关器件和附加电容器。通过开关装置接通和关闭附加电容器来切换特性。多个等效电阻器与多个开关电容器和普通电容器的直接连接构成均衡器。构成开关电容器的电容器与开关器件和附加电容器连接，使得均衡器的频率特性可通过接通和断开开关器件来切换。构成开关电容器的每个电容器，构成时间常数电路的电容器和附加电容器的端部接地。因此，所有元件能够形成在相同的集成电路中。

10. 发明公开

EP0090423A2 Motor driving circuit 失效
标题翻译：电动机驱动电路。
公开(公告)号：EP0090423A2
公开(公告)日：1983-10-05
申请号：EP83103177.8
申请日：1983-03-30
申请人： Hitachi, Ltd. , HITACHI MICROCOMPUTER ENGINEERING LTD.
发明人： Nishijima, Hideo , Sera, Katsumi , Fukushima, Isao , Kobori, Yasunori
IPC分类号： H02P3/12 , H02P3/22
CPC分类号： H02P3/06 , H02P6/085 , H02P6/24
摘要： A motor driving circuit in which the opposite ends of the motor driving coils (4) of a video tape recorder (VTR) capstan motor are shorted by a group of switching elements (12-17) when a control input voltage generated from a rotation detec- tion/oscillator (6) is in a predetermined range.

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