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7 条记录 (耗时 0.017 秒)

    Magnetic-recording apparatus for carrying out recording by selectively using one of two kinds of recording systems
    3.
    发明公开
    Magnetic-recording apparatus for carrying out recording by selectively using one of two kinds of recording systems 失效
    用于通过选择性地使用两种类型的记录系统的记录的磁性记录装置。

    公开(公告)号：EP0227210A1

    公开(公告)日：1987-07-01

    申请号：EP86306581.9

    申请日：1986-08-26

    申请人： VICTOR COMPANY OF JAPAN, LIMITED

    发明人： Kido, Koichi ,  Shibayama, Kenji ,  Tsuruta, Masahiko ,  Hirota, Akira ,  Mihara, Masato ,  Inoue, Osamu

    IPC分类号： H04N9/82

    CPC分类号： H04N5/78263 ,  H04N5/78213 ,  H04N9/7921 ,  H04N9/7936 ,  H04N9/802 ,  H04N9/8222 ,  H04N9/8255 ,  H04N9/835 ,  H04N9/86

    摘要： A magnetic recording apparatus for carrying out a recording by selectively using one of two kinds of recording systems comprises first through fourth rotary magnetic heads (H S1 , 74a, H SA ; H S2 , 74b, H SB ; H L1 , 9la, H LA ; H L2 ,9lb, H LB ), a first circuit (l7, 73) for producing an FM luminance signal, second and third circuits (20-32, 78-90, l46, l47; 35, 93-99) for producing first and second frequency division multiplexed signals, and a switching circuit (l9, 34, 36; 100, l0l; 138, l39). The first and second heads (H S1 , H S2 ; 74a, 74b; H SA , H SB ) are mounted on a rotary body at mutually opposing positions, and have same height position. The third and fourth heads (H L1 , H L2 ; 9la, 9lb; H LA , H LB ) are mounted on the rotary body at mutually opposing positons respectively in vicinities of the first and second heads along a rotating direction of the rotary body, and have the same height position. The switching circuit selectively supplies the output signals of the first and second circuits to the first through fourth heads when a luminance/color separation recording system is selected as the recording system, and selectively supplies the output signal of the third circuit to the first and second heads or to the third and fourth heads when a low band conversion color recording system is selected as the recording system.

    Magnetic recording and/or reproducing apparatus having modes with mutually different carrier frequencies
    4.
    发明公开
    Magnetic recording and/or reproducing apparatus having modes with mutually different carrier frequencies 失效
    磁记录和再现装置或具有不同的载波频率操作模式。

    公开(公告)号：EP0249482A2

    公开(公告)日：1987-12-16

    申请号：EP87305182.5

    申请日：1987-06-11

    申请人： VICTOR COMPANY OF JAPAN, LIMITED

    发明人： Kido, Koichi ,  Shibayama, Kenji ,  Isobe, Yutaka ,  Tsuruta, Masahiko ,  Yamada, Hiroshi

    IPC分类号： G11B15/02 ,  G11B15/087 ,  G11B5/008

    CPC分类号： G11B5/0086 ,  G11B15/02 ,  G11B15/087

    摘要： A magnetic recording and/or reproducing apparatus comprises a cassette discriminating circuit (23) for discriminating whether a loaded tape cassette accommodates a standard tape or a high performance tape in a recording mode, a mode discriminating circuit (47, 216, 230) for discriminating from a signal reproduced from the tape in a reproducing mode a mode with which the tape was recorded at the time of the recording, and a switching circuit (52, 24, 70, 71, 72, 44, 51) for automatically switching the operation mode to a predetermined mode responsive to the discrimination made by the cassette discriminating circuit in the recording mode and responsive to the discrimination made by the mode discriminating circuit in the reproducing mode. The high performance tape is playable either in a standard mode or a high quality mode.

    摘要翻译： 一种磁记录和/或再现设备包括：一个磁带盒识别电路（23）用于判别是否加载的磁带盒允许使用标准的胶带或在记录模式中的高性能胶带，模式鉴别电路（47，216，230），用于判别 从在再现模式的模式从磁带重放的信号与该记录在记录时的磁带，以及一个开关电路（52，24，70，71，72，44，51），用于自动切换的操作 的方式响应于由在记录模式和盒识别电路响应于由所述模式在再生模式判别电路做出的判断作出的判别的预定模式。 高性能胶带是可播放无论在标准模式或高质量模式。

    Noise reduction system for video signal
    6.
    发明公开
    Noise reduction system for video signal 失效
    用于在视频信号降低噪声的装置。

    公开(公告)号：EP0221684A1

    公开(公告)日：1987-05-13

    申请号：EP86307726.9

    申请日：1986-10-07

    申请人： VICTOR COMPANY OF JAPAN, LIMITED

    发明人： Kido, Koichi ,  Matsuo, Yasutoshi

    IPC分类号： H04N5/76 ,  H04B1/62 ,  H03G7/00

    CPC分类号： H04N5/923

    摘要： A noise reduction system for reducing noise in a video signal comprises a pre-emphasis circuit (21) for subjecting the video signal which is supplied to a transmission system to a pre-emphasis in a vertical direction of a picture and in a direction oblique to the vertical direction, and a de-emphasis circuit (17) for subjecting the pre-emphasized video signal obtained through the transmission system to a de-emphasis complementary to the pre-emphasis.