-
公开(公告)号：EP0238162A3
公开(公告)日：1988-06-22
申请号：EP87300310
申请日：1987-01-15
发明人： Tanaka, Shinichi , Isaka, Haruo , Yasuda, Hiroshi , Itoi, Oshiki
IPC分类号： G11B07/09
CPC分类号： G11B7/094 , G11B7/0901 , G11B7/0909
摘要： Disclosed herein is an optical information reproducing apparatus having a phase difference tracking system which is free from an influence of a tangential phase different of output signals from a photodetector. The photodetector comprises first through fourth photocells which are respectively disposed at first through fourth quadrants defined by a first straight line parallel to an information track image and a second straight line perpendicular to the first straight line. Output signals of the first and second photocells are delayed for a specified time by respective first and second delaying circuits. Output signals of the first delaying circuit and the third photocell are added by a first adder, and output signals of the second delaying circuit and the fourth photocell are added by a second adder. A phase comparator produces a tracking error signal from a phase difference between output signals of the first and second adders. Alternatively, a first phase comparator produces a phase difference between the output signals of the first and second photocells, and/or a second comparator produces a phase difference between the output signals of the third and fourth photocells. At least one of output signals of the first and second comparator is used for producing a tracking error signal.
摘要翻译： 本文公开了一种具有相位差跟踪系统的光学信息再现设备，该系统不受来自光电检测器的输出信号的不同切向相位的影响。 光检测器包括第一至第四光电池，其分别设置在由平行于信息轨道图像的第一直线和垂直于第一直线的第二直线限定的第一至第四象限中。 第一和第二光电池的输出信号由相应的第一和第二延迟电路延迟指定的时间。 第一延迟电路和第三光电管的输出信号由第一加法器相加，第二延迟电路和第四光电管的输出信号由第二加法器相加。 相位比较器根据第一和第二加法器的输出信号之间的相位差产生跟踪误差信号。 或者，第一相位比较器在第一和第二光电池的输出信号之间产生相位差，和/或第二比较器在第三和第四光电池的输出信号之间产生相位差。 第一和第二比较器的至少一个输出信号用于产生跟踪误差信号。
-
公开(公告)号：EP0729154B1
公开(公告)日：2002-12-04
申请号：EP96102905.5
申请日：1996-02-27
IPC分类号： G11B27/32 , H04N9/79 , H04N5/7826
CPC分类号： G11B27/324 , G11B27/032 , H04N5/78266
-
公开(公告)号：EP0776006A3
公开(公告)日：2001-05-02
申请号：EP96118625.1
申请日：1996-11-20
发明人： Honjo, Kenichi , Isaka, Haruo , Ohyama, Satoshi , Nishida, Masafumi , Sakakibara, Yoshio , Kohri, Toshiyuki , Sakurai, Koiji
IPC分类号： G11B15/18 , G11B15/467 , G11B15/087 , G11B15/12 , G11B15/52 , G11B27/032 , G11B27/13 , G11B27/32
CPC分类号： G11B15/125 , G11B5/5927 , G11B15/087 , G11B15/1808 , G11B15/1875 , G11B15/20 , G11B15/4675 , G11B15/4678 , G11B15/48 , G11B15/52 , G11B15/54 , G11B27/032 , G11B27/13 , G11B27/322 , G11B2220/90
摘要： A magnetic recording and reproducing device according to the present invention operates with the steps of moving a magnetic tape having having a plurality of tracks per frame and a plurality of CTL signals recorded thereon, keeping count of the pulses of an FG signal corresponding to the rotation of a capstan motor by FG counting means, resetting the count of the FG pulses by the CTL signal reproduced by a fixed magnetic head, detecting the track number by the CTL counting means reset by a frame reference signal, controlling, at the start, the start timing on the basis of the tape stop position detected by the FG pulse counting means and CTL counting means and the reference frame signal from the reference frame signal generating means, said device preventing the thinning of tracks at the editing point in after-break recording and the disturbance of images immediately after the start, not requiring a special circuit or complicated software-wise processing, providing a stabilized slow-reproduced image. Further, in a magnetic recording and reproducing device for intermittent recording, there is no danger of causing thinning to recorded tracks; a reproduced image of high quality can be obtained.
-
公开(公告)号：EP0594141B1
公开(公告)日：2000-02-02
申请号：EP93116898.3
申请日：1993-10-19
发明人： Sakakibara, Yoshio , Gotou, Makoto , Isaka, Haruo
IPC分类号： G11B21/10 , G11B15/467 , G11B5/588
CPC分类号： G11B5/588 , G11B15/4678
-
公开(公告)号：EP0572136B1
公开(公告)日：1998-07-22
申请号：EP93303628.7
申请日：1993-05-11
IPC分类号： H04N5/93
CPC分类号： H04N5/9264 , H04N5/93
-
26.发明公开
公开(公告)号：EP0776006A2
公开(公告)日：1997-05-28
申请号：EP96118625.1
申请日：1996-11-20
发明人： Honjo, Kenichi , Isaka, Haruo , Ohyama, Satoshi , Nishida, Masafumi , Sakakibara, Yoshio , Kohri, Toshiyuki , Sakurai, Koiji
IPC分类号： G11B15/18 , G11B15/467 , G11B15/087 , G11B15/12
CPC分类号： G11B15/125 , G11B5/5927 , G11B15/087 , G11B15/1808 , G11B15/1875 , G11B15/20 , G11B15/4675 , G11B15/4678 , G11B15/48 , G11B15/52 , G11B15/54 , G11B27/032 , G11B27/13 , G11B27/322 , G11B2220/90
摘要： A magnetic recording and reproducing device according to the present invention operates with the steps of moving a magnetic tape having having a plurality of tracks per frame and a plurality of CTL signals recorded thereon, keeping count of the pulses of an FG signal corresponding to the rotation of a capstan motor by FG counting means, resetting the count of the FG pulses by the CTL signal reproduced by a fixed magnetic head, detecting the track number by the CTL counting means reset by a frame reference signal, controlling, at the start, the start timing on the basis of the tape stop position detected by the FG pulse counting means and CTL counting means and the reference frame signal from the reference frame signal generating means, said device preventing the thinning of tracks at the editing point in after-break recording and the disturbance of images immediately after the start, not requiring a special circuit or complicated software-wise processing, providing a stabilized slow-reproduced image. Further, in a magnetic recording and reproducing device for intermittent recording, there is no danger of causing thinning to recorded tracks; a reproduced image of high quality can be obtained.
摘要翻译： 根据本发明的磁记录和再现装置通过以下步骤操作：移动每帧具有多个磁迹的磁带和记录在其上的多个CTL信号，保持对应于旋转的FG信号的脉冲计数 通过FG计数装置，通过由固定磁头再现的CTL信号来复位FG脉冲的计数，通过由帧参考信号复位的CTL计数装置检测磁道号，控制起始时的 基于由FG脉冲计数装置和CTL计数装置检测的磁带停止位置和来自参考帧信号产生装置的参考帧信号的开始定时，所述装置防止在断点记录中的编辑点处的磁道变薄 以及在启动后立即对图像的干扰，不需要专门的电路或复杂的软件处理，提供稳定的慢速重放 产生图像。 此外，在用于间歇记录的磁记录和再现装置中，不存在导致记录轨迹变薄的危险; 可以获得高质量的再现图像。
-
27.发明公开
公开(公告)号：EP0729154A3
公开(公告)日：1997-05-28
申请号：EP96102905.5
申请日：1996-02-27
IPC分类号： G11B27/32
CPC分类号： G11B27/324 , G11B27/032 , H04N5/78266
摘要： A method and apparatus for recording control pulses on a control track are provided. The control pulses correspond to a number M (where M is an integer equal to or larger than four) of azimuthal tracks on the tape on which the number M of segmented data, obtained by dividing image data corresponding to one frame into the number M of segments, are recorded. One period of the control pulses corresponds to a number N (where N is a divisor of M) of azimuthal tracks, and a duty ratio pattern of the control pulses in a number L ( L = M/N ) of successive periods corresponding to one frame is different in each of a number K (where K is an integer equal to or larger than two) of successive frames.
摘要翻译： 提供了一种用于在控制轨道上记录控制脉冲的方法和装置。 控制脉冲对应于通过将对应于一帧的图像数据划分为数字M的分段数据的数目M的磁带上的方位轨迹的数量M（其中M是等于或大于四的整数） 记录。 控制脉冲的一个周期对应于方位轨迹的数量N（其中N是M的除数），并且对应于一个连续周期的L（L = M / N）个数的控制脉冲的占空比模式 帧的数量K（其中K是等于或大于2的整数）的连续帧中的每一帧不同。
-
公开(公告)号：EP0729154A2
公开(公告)日：1996-08-28
申请号：EP96102905.5
申请日：1996-02-27
IPC分类号： G11B27/32
CPC分类号： G11B27/324 , G11B27/032 , H04N5/78266
摘要： A method and apparatus for recording control pulses on a control track are provided. The control pulses correspond to a number M (where M is an integer equal to or larger than four) of azimuthal tracks on the tape on which the number M of segmented data, obtained by dividing image data corresponding to one frame into the number M of segments, are recorded. One period of the control pulses corresponds to a number N (where N is a divisor of M) of azimuthal tracks, and a duty ratio pattern of the control pulses in a number L ( L = M/N ) of successive periods corresponding to one frame is different in each of a number K (where K is an integer equal to or larger than two) of successive frames.
-
公开(公告)号：EP0615236A2
公开(公告)日：1994-09-14
申请号：EP94301474.6
申请日：1994-03-02
CPC分类号： G11B15/463 , G11B20/1208 , G11B20/1426 , G11B27/3027 , G11B2220/90
摘要： A pilot signal is superposed and recorded on data at the beginning of each track. The beginning part of the track is constituted by using only codewords of which disparity in every 10 bits is +2, 0 or -2. The beginning part of track is also constituted so that the cumulative value of the disparities of every 10 bits may increase or decrease in the period of the pilot signal to be superposed. Therefore, the frequency spectrum in the beginning part of the track has a peak at the frequency of pilot signal, and using this peak as pilot signal, tracking is controlled in reproduction.
摘要翻译： 导频信号叠加并记录在每个磁道开头的数据上。 轨道的起始部分仅使用其中每10位中的视差为+2,0或-2的码字构成。 磁道的开始部分也构成为使得每10位的差异的累积值在要重叠的导频信号的周期中可以增加或减少。 因此，轨道的开始部分的频谱在导频信号的频率处具有峰值，并且使用该峰作为导频信号，在再现中控制跟踪。
-
公开(公告)号：EP0587320A2
公开(公告)日：1994-03-16
申请号：EP93306452.9
申请日：1993-08-16
IPC分类号： G11B15/18 , G11B15/467
CPC分类号： G11B15/4678 , G11B15/1808
摘要： A signal reproducing apparatus for reproducing data from a tape in which data and a pilot signal for tracking are recorded in oblique tracks comprises a tape driver for running the tape in the longitudinal direction, a rotary head for rotating and scanning on the tape to produce reproduction signals, a reference generator (4) for generating a reference signal which is the rotation standard of the rotary head, a tracking error detector (5) for producing a tracking error signal from the pilot signal contained in the reproduction signals, and a timing controller (6) for controlling the start timing of tape running of the tape driving means to the reference signal, on the basis of the tracking error signal and reference signal in the stopped state of tape running.
摘要翻译： 用于从数据和跟踪导频信号中记录数据和跟踪导频信号的信号重放装置记录在斜轨道中的信号再现装置包括用于沿纵向运行磁带的磁带驱动器，用于在磁带上旋转和扫描以产生再现的旋转磁头 信号，用于产生作为旋转头的旋转标准的参考信号的参考发生器，用于从包含在再现信号中的导频信号产生跟踪误差信号的跟踪误差检测器，以及用于控制开始正时的定时控制器 基于磁带运行的停止状态下的跟踪误差信号和参考信号，将磁带驱动装置的磁带运行到参考信号。
-
-
-
-
-
-
-
-
-
搜索结果
52 条记录 (耗时 0.015 秒)
