利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

85 条记录 (耗时 0.017 秒)

    Magnetic recording and reproducing apparatus
    1.
    发明公开
    Magnetic recording and reproducing apparatus 失效

    公开(公告)号：EP0730375A3

    公开(公告)日：1997-03-19

    申请号：EP96106993.7

    申请日：1991-07-02

    申请人： AKAI ELECTRIC CO., LTD.

    发明人： Minakawa, Tokuichi, c/o Akai Electric Co., Ltd.

    IPC分类号： H04N5/92

    CPC分类号： H04N9/7908 ,  H04N5/911 ,  H04N5/923 ,  H04N9/7933 ,  H04N9/83

    摘要： A magnetic recording apparatus in which a luminance signal of a video signal to be recorded is subjected to frequency-modulation and then to single-sideband recording and which comprises a detail emphasis circuit for emphasising a high frequency small level component of the luminance signal before frequency modulation is provided, comprises means for detecting a level of a reproduced signal and a memory for storing said detecting level so that an amount of emphasis of said detail emphasis circuit is controlled in accordance with the stored detected level.

    Magnetic reproducing apparatus with noise cancellation
    3.
    发明公开
    Magnetic reproducing apparatus with noise cancellation 失效
    具有磁重放装置噪声抑制器

    公开(公告)号：EP0731605A2

    公开(公告)日：1996-09-11

    申请号：EP96107016.6

    申请日：1991-07-02

    申请人： AKAI ELECTRIC CO., LTD.

    发明人： Minakawa, Tokuichi, c/o Akai Electric Co., Ltd.

    IPC分类号： H04N5/92

    CPC分类号： H04N9/7908 ,  H04N5/911 ,  H04N5/923 ,  H04N9/7933 ,  H04N9/83

    摘要： In a magnetic producing apparatus a noise canceller is comprised having a frequency-modulated reproduced level detector for detecting a reproduced level of a reproduced frequency-modulated luminance signal, means for extracting noise components from a luminance signal demodulated from said frequency-modulated luminance signal, a slice circuit having a slice level for removing components whose levels are higher than a predetermined level from the noise component and controlling the slice level so as to decrease with increasing values of the reproduced level, and a subtractor for subtracting an output of said slice circuit from said luminance signal, wherein a chroma level detector for detecting a level of a reproduced chroma signal is provided, so that a slice level of said slice circuit is controlled so as to be increased with increasing values of the detected chroma level.

    Motion signal detecting circuit
    7.
    发明公开
    Motion signal detecting circuit 失效
    运动信号检测电路

    公开(公告)号：EP0487186A3

    公开(公告)日：1993-05-05

    申请号：EP91307320.1

    申请日：1991-08-09

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Ko, Jeong-wan

    IPC分类号： H04N9/79

    CPC分类号： H04N9/78 ,  H04N5/144 ,  H04N7/0152 ,  H04N7/0803 ,  H04N7/125 ,  H04N9/7908 ,  H04N9/797 ,  H04N9/7976 ,  H04N9/83

    摘要： A motion signal detecting circuit is adapted to an image reproducing system having a frequency unfolding circuit for generating an unfolded luminance signal by unfolding a high frequency component folded previously into low-frequency components back into the original frequency band in order to reproduce a full bandwidth image signal recorded on a recording medium having a limited bandwidth. The detecting circuit comprises a prefilter (100) for eliminating the folding carrier contained in the unfolded luminance signal and sidebands thereof and a comb filter (110) for detecting a motion signal which is the difference component between frames in the unfolded luminance signal by filtering the output of the prefilter (100).

    Videorecorder
    8.
    发明公开
    Videorecorder 失效
    录像机。

    公开(公告)号：EP0517106A1

    公开(公告)日：1992-12-09

    申请号：EP92109019.7

    申请日：1992-05-29

    申请人： Deutsche Thomson-Brandt GmbH

    发明人： Dumont, Frank ,  Rauser, Horst W.

    IPC分类号： H04N9/79 ,  H04N9/88

    CPC分类号： H04N9/7908 ,  H04N9/88

    摘要： 2.1. Ein VHS-Videorecorder enthält im Wiedergabeweg einen Kammfilter mit einer Zweizeilen-Verzögerungsleitung zur Verringerung von Farbübersprechen. Durch die Verzögerung Zweizeilen entstehen bei der Wiedergabe im Bild Farbverfälschungen, insbesondere bei Übergängen Schwarz/Schweiz-Farbe in Vertikalrichtung. Aufgabe ist es, mit geringen Schaltungsaufwand derartige Störungen zu verringern.
    2.2. Eine an sich bei der Wiedergabe verwendete Zeilen-Verzögerungsleitung zur Störunterdrückung oder Dropout-Kompensation wird bei Aufnahmebetrieb in den Weg des Leuchtdichtesignals (Y) eingeschaltet.
    2.3. Insbesondere VHS-Videorecorder

    摘要翻译： 2.1。 VHS录像机包含带有双线延迟线的梳状滤波器，用于减少重放路径中的交叉色效果。 由于双线延迟，在重放期间产生颜色伪造，特别是在垂直方向上的黑/白色转变。 减少这种干扰的目的是减少电路复杂度。 2.2。 在记录模式下，在亮度信号（Y）的路径中插入用于抑制干扰或丢失补偿的重放期间使用的线路延迟线。 2.2。 特别是VHS录像机。

    Magnetic recording and reproducing apparatus
    9.
    发明公开
    Magnetic recording and reproducing apparatus 失效
    Magnetisches Aufzeichnungs- undWiedergabegerät。

    公开(公告)号：EP0464772A2

    公开(公告)日：1992-01-08

    申请号：EP91110950.2

    申请日：1991-07-02

    申请人： AKAI ELECTRIC CO., LTD.

    发明人： Minakawa, Tokuichi, c/o Akai Electric Co., Ltd.

    IPC分类号： H04N9/87 ,  H04N5/92

    CPC分类号： H04N9/7908 ,  H04N5/911 ,  H04N5/923 ,  H04N9/7933 ,  H04N9/83

    摘要： A magnetic recording/reproducing apparatus, which includes: a reproduced level detector (49) for detecting the level of a reproduced signal and a memory (56) for storing the reproduced level detected by the detector; and when recording a video signal, the signal is recorded and reproduced in advance, and this reproduced level is stored in the memory, so that an amount of emphasis of a detail emphasis circuit in a reproducing system and an amount of equalization of an FM equalizer in the recording system can be controlled in accordance with the stored reproduced level; while when reproducing the video signal, the level of a reproduced FM luminance signal is detected by the reproduced level detector, so that an amount of equalization of an FM equalizer, an amount of cancellation of a line noise canceller (24a), and an amount of cancellation of a noise canceller in a reproducing system can respectively be controlled in accordance with the detected reproduced level.

    摘要翻译： 一种磁记录/再现装置，包括：用于检测再现信号的电平的再现电平检测器和用于存储检测器检测到的再现电平的存储器; 并且当记录视频信号时，预先记录和再现该信号，并且该再现电平被存储在存储器中，使得再现系统中的细节加重电路的重点和FM均衡器的均衡量 在记录系统中可以根据存储的再现级别进行控制; 当再现视频信号时，由再现电平检测器检测再现的FM亮度信号的电平，使得FM均衡器的均衡量，线路噪声消除器的消除量和消除的量 再现系统中的噪声消除器可以分别根据检测到的再现电平进行控制; 从而可以在设备范围和集成的基础上根据其类型来控制录像带的特性。

    Video signal processing apparatus and method for time base compensation
    10.
    发明公开
    Video signal processing apparatus and method for time base compensation 失效
    Vorrichtung und Verfahren zur VideosignalverarbeitungfürZeitbasiskcompensation。

    公开(公告)号：EP0432668A2

    公开(公告)日：1991-06-19

    申请号：EP90123588.7

    申请日：1990-12-07

    申请人： SONY CORPORATION

    发明人： Ando, Toshizumi, c/o Sony Corporation ,  Iida, Hiroyuki, c/o Sony Corporation

    IPC分类号： H04N9/89

    CPC分类号： H04N9/7908 ,  H04N5/932 ,  H04N9/88 ,  H04N9/896

    摘要： A video signal processing apparatus and method are provided in which time base errors in the luminance and color signals of a video signal reproduced from a recording medium are compensated. Time base errors in the luminance signal are reduced by storing the luminance signal in a first memory (40) in response to a write clock signal (WCK) synchronized with the video signal and subsequently reading the luminance signal from the memory in response to a first read clock signal (RCK) synchronized with a stable clock signal. Time base errors in the color signal are reduced by writing the color signal in a second memory (46) in response to the write clock signal and subsequently reading the color signal from the second memory in response to a second read clock signal synchronized with the stable clock signal such that corresponding portions of the luminance signal and the color signal are read from the first and second memories at different respective times with a predetermined time difference therebetween

    摘要翻译： 提供了一种视频信号处理装置和方法，其中从记录介质再现的视频信号的亮度和颜色信号中的时基误差被补偿。 响应于与视频信号同步的写入时钟信号（WCK），随后响应于第一存储器读取来自存储器的亮度信号，将亮度信号存储在第一存储器（40）中，降低亮度信号中的时基误差 读时钟信号（RCK）与稳定的时钟信号同步。 通过响应于写时钟信号将颜色信号写入第二存储器（46）并随后响应于与稳定器同步的第二读时钟信号从第二存储器读取颜色信号来减少颜色信号中的时基误差 时钟信号，使得亮度信号和颜色信号的对应部分在不同的相应时间从第一和第二存储器以其间的预定时间差被读取。