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    • 1. 发明授权
    • Video signal reproducing apparatus
    • 视频信号再现装置
    • US4558382A
    • 1985-12-10
    • US576028
    • 1984-02-01
    • Hiroo EdakuboNobutoshi TakayamaHiroyuki Takimoto
    • Hiroo EdakuboNobutoshi TakayamaHiroyuki Takimoto
    • H04N5/7826G11B5/588G11B5/592G11B15/467G11B5/58
    • G11B5/5922
    • A video signal reproducing apparatus which is arranged to reproduce a composite signal formed by superimposing plural kinds of pilot signals of different frequencies upon a video signal one after another from recording tracks formed by the composite signal on a recording medium comprises: a plurality of reproducing heads arranged to trace the recording tracks one after another on the recording medium; a switch-over device for producing the outputs of the plurality of reproducing heads by switching them over from one to another; a reference signal generating device for producing plural kinds of reference signals of different frequencies which are substantially the same as those of the pilot signals; selecting device for selectively producing one of the plural kinds of reference signals generated by the reference signal generating means; a detecting device for detecting the positional errors of the reproducing heads relative to the recording tracks by using the reference signal obtained from the selecting means in conjunction with at least one of the plural kinds of pilot signals; and a control device for controlling the selecting means with the outputs of the reproducing heads not included in the output of the switch-over device.
    • 一种视频信号再现装置,其被配置为通过将由复合信号形成的多个不同频率的导频信号叠加在视频信号上而形成的复合信号在记录介质上包括:多个再现头 布置成在记录介质上一个接一个地跟踪记录轨道; 切换装置,用于通过将它们切换成另一个来产生多个再现头的输出; 用于产生与导频信号基本相同的不同频率的多种参考信号的参考信号产生装置; 选择装置,用于选择性地产生由参考信号产生装置产生的多种参考信号之一; 一种检测装置,用于结合多种导频信号中的至少一种,通过使用从选择装置获得的参考信号来检测再现头相对于记录道的位置误差; 以及控制装置,用于通过不包括在切换装置的输出中的再现头的输出来控制选择装置。
    • 2. 发明授权
    • Video signal reproducing apparatus
    • 视频信号再现装置
    • US4599660A
    • 1986-07-08
    • US573368
    • 1984-01-24
    • Susumu KozukiHiroyuki TakimotoHiroo EdakuboNobutoshi Takayama
    • Susumu KozukiHiroyuki TakimotoHiroo EdakuboNobutoshi Takayama
    • H04N5/7826G11B5/584G11B5/588G11B15/467G11B5/56
    • G11B15/4678
    • A video signal reproducing apparatus which reproduces a video signal from many evenly spaced recording tracks formed on a recording medium, comprises:a first rotating head;a second rotating head which has a larger width than the first rotating head and which traces the recording tracks alternately with the first rotating head;detecting apparatus for detecting the positional errors of the first and second rotating heads relative to one of the recording tracks by using the outputs of these heads;adjusting apparatus for adjusting, on the basis of the difference in head width between the first and second rotating heads, the output of the detecting apparatus related to the second rotating head;recording medium moving apparatus for moving the recording medium in a direction which intersects the recording tracks; andcontrol apparatus for controlling the moving apparatus on the basis of the output of the detecting means adjusted by the adjusting apparatus.
    • 一种视频信号再现装置,其从形成在记录介质上的许多均匀间隔的记录道再现视频信号,包括:第一旋转头; 第二旋转头,其具有比第一旋转头更大的宽度,并且与第一旋转头交替地跟踪记录轨道; 检测装置,用于通过使用这些磁头的输出来检测第一和第二旋转磁头相对于一个记录磁道的位置误差; 调整装置,用于根据第一和第二旋转头之间的头部宽度的差异,调整与第二旋转头相关的检测装置的输出; 记录介质移动装置,用于沿与记录轨道相交的方向移动记录介质; 以及根据由调节装置调整的检测装置的输出来控制移动装置的控制装置。
    • 5. 发明授权
    • Rotary head type reproducing apparatus having a head shifter for
accurately shifting the rotary head
    • 具有用于精确地移动旋转头的头移位器的旋转头型重放装置
    • US4780774A
    • 1988-10-25
    • US652762
    • 1984-09-20
    • Hiroo EdakuboTatsuzo UshiroNobutoshi TakayamaHiroyuki Takimoto
    • Hiroo EdakuboTatsuzo UshiroNobutoshi TakayamaHiroyuki Takimoto
    • G11B5/588G11B15/18G11B5/592
    • G11B15/1875G11B5/588
    • A rotary type reproducing apparatus for reproducing a recorded signal through the tracing of many recording tracks formed at a predetermined pitch on a record bearing medium, one after another, includes a moving apparatus for moving the record bearing medium in a direction which crosses the recording tracks; a shifting apparatus for shifting the rotary head in a direction which crosses the rotation plane thereof; an apparatus for forming a first pulse signal in association with the record bearing meduim moving action of the moving apparatus; an apparatus for forming, on the basis of the first pulse signal, a second pulse signal which is of a higher frequency than the first pulse signal; a counting apparatus for counting the pulses of the second pulse signal; and a control apparatus for forming, on the basis of the counter value of the counting apparatus, a control signal which controls the shifting apparatus. Arranged as such, the shifting apparatus shifts the rotary head using a control signal which is in close proximity to an ideally analogously varying control signal, so that the recording tracks on the medium may be accurately traced.
    • 一种用于通过跟踪在记录载体介质上以预定间距形成的许多记录轨迹来再现记录信号的旋转式再现装置,包括:移动装置,用于使记录载体介质沿与记录轨迹交叉的方向移动; ; 移动装置,用于沿与其旋转平面相交的方向移动旋转头; 与移动装置的记录载体移动动作相关联地形成第一脉冲信号的装置; 基于第一脉冲信号形成比第一脉冲信号高的第二脉冲信号的装置; 计数装置,用于对第二脉冲信号的脉冲进行计数; 以及控制装置,用于根据计数装置的计数值形成控制变速装置的控制信号。 这样安排,换档装置使用与理想类似变化的控制信号相近的控制信号来移动旋转磁头,从而可以精确地跟踪介质上的记录轨道。
    • 6. 发明授权
    • Head tracking apparatus
    • 头跟踪装置
    • US4636882A
    • 1987-01-13
    • US576029
    • 1984-02-01
    • Hiroo EdakuboNobutoshi TakayamaHiroyuki Takimoto
    • Hiroo EdakuboNobutoshi TakayamaHiroyuki Takimoto
    • H04N5/783G11B5/588G11B5/592G11B15/467G11B21/02G11B21/10
    • G11B5/5922
    • A video signal reproducing apparatus adapted for reproducing a composite signal formed by superimposing four kinds of pilot signals of different frequencies upon a video signal one after another in a predetermined rotation, one upon each portion of the video signal for a predetermined period, from many recording tracks formed with the composite signal at evenly spaced intervals on a recording medium, comprises: (a) a reproducing head tracing the above recording tracks; (b) reference signal generating apparatus capable of selectively generating in the above predetermined rotation, four kinds of reference signals of different frequencies substantially the same as the frequencies of the four kinds of pilot signals; (c) moving apparatus for moving the recording medium in a direction intersecting the recording track; (d) detecting apparatus for detecting the positional error of the reproducing head relative to the recording track by using a reference signal selected from one of the four kinds of reference signals in conjunction with at least one of the four kinds of pilot signals reproduced via the reproducing head; (e) switch-over apparatus for shifting the operating mode of the apparatus between a first mode in which the reproducing head traces the recording track at intervals of 4n+3 tracks and a second mode in which the head traces the recording track at intervals of 4n+1 tracks (n being an integer); and (f) control apparatus for controlling the detecting apparatus based on the switch-over apparatus.
    • 一种视频信号再现装置,适用于通过在预定旋转中将视频信号叠加在一个预定旋转中的视频信号上,将四种不同频率的导频信号叠加在一个预定周期的每个部分上, 在记录介质上以均匀间隔的间隔形成有复合信号的轨道包括:(a)跟踪上述记录轨道的再现头; (b)参考信号发生装置,能够在上述预定旋转中选择性地产生与四种导频信号的频率基本相同的不同频率的四种参考信号; (c)用于在与记录轨道交叉的方向上移动记录介质的移动装置; (d)检测装置,用于通过使用从四种参考信号之一中选择的参考信号结合通过所述四种参考信号再现的四种导频信号中的至少一种来检测再现头相对于记录轨道的位置误差 复制头; (e)切换装置,用于在重放头以4n + 3磁道的间隔跟踪记录磁道的第一模式和第二模式之间移动装置的操作模式,其中磁头按照 4n + 1个磁道(n为整数); 以及(f)用于基于切换装置控制检测装置的控制装置。
    • 9. 发明授权
    • Tracking control information signal recording device
    • 跟踪控制信息信号记录设备
    • US5089919A
    • 1992-02-18
    • US671663
    • 1991-03-19
    • Susumu KozukiKenichi NagasawaHiroo EdakuboUnichi SatoNobutoshi Takayama
    • Susumu KozukiKenichi NagasawaHiroo EdakuboUnichi SatoNobutoshi Takayama
    • G11B15/18G11B15/467
    • G11B15/1875G11B15/4678
    • An information signal recording apparatus arranged to form a recording track on a recording medium by recording an information signal on the recording medium, in which the information signal is recorded on the recording medium in such state that a first tracking control signal, for effecting a first tracking operation during reproduction, is superimposed thereon, in the case where a stop of the recording track forming operation is not instructed, and the information signal is recorded on said recording medium in such state that a second tracking control signal, for effecting a second tracking operation during reproduction, is superimposed on the information signal, depending upon a timing when the stop of the recording track forming operation is instructed, whereby a position where the first tracking operation becomes impossible on the way of effecting the first tracking operation during reproduction is detected, so that a position of the step of the recording track forming operation on the recording medium can be easily detected.
    • 一种信息信号记录装置,被配置为通过在记录介质上记录信息信号而在记录介质上形成记录轨道,其中信息信号被记录在记录介质上,在第一跟踪控制信号的状态下,用于执行第一 在没有指示记录轨道形成操作的停止的情况下,在再现期间的跟踪操作被叠加在信息信号被记录在所述记录介质上的状态下,用于执行第二跟踪 根据指示记录轨道形成操作的停止的定时,再现期间的操作被叠加在信息信号上,从而检测在再现期间执行第一跟踪操作的途中不可能进行第一跟踪操作的位置 ,使得记录轨道形成操作的步骤的位置o 可以容易地检测记录介质。
    • 10. 发明授权
    • Rotating head type reproducing apparatus
    • 旋转头型重放装置
    • US4665449A
    • 1987-05-12
    • US643301
    • 1984-08-22
    • Susumu KozukiNobutoshi TakayamaHiroo EdakuboTatsuzo UshiroMasahiro TakeiKenichi Nagasawa
    • Susumu KozukiNobutoshi TakayamaHiroo EdakuboTatsuzo UshiroMasahiro TakeiKenichi Nagasawa
    • G11B5/592G11B15/467G11B21/10G11B5/56
    • G11B5/592G11B15/4678G11B21/103
    • A rotating head type reproducing apparatus, arranged to reproduce a recorded signal by tracing, one after another many recording tracks formed on a record bearing medium at a predetermined pitch by a rotating head, includes a moving mechanism for moving the record bearing medium in a direction transverse to the recording tracks; a shifting mechanism for shifting the rotating head in a direction transverse to the rotating plane thereof; a pulse signal generator for generating a pulse signal in association with the moving operation of the moving mechanism on the record bearing medium; a counter for counting the pulse signal, the count datum of the counter being arranged to return to the initial datum every time a predetermined number of pulses of the pulse signal are counted; a timing signal generator for generating a timing signal in association with the rotation of the rotating head; and a control device for forming a control signal for controlling the shifting mechanism on the basis of the count data of the counter and the timing signal.
    • 旋转磁头型重放装置,用于通过跟踪再现记录信号,通过旋转磁头以预定的间距一个接一个地在记录轴承介质上形成的许多记录磁道包括一个移动机构,用于沿记录轴承介质的方向 横向记录轨道; 用于使旋转头沿与其旋转平面横切的方向移动的移动机构; 脉冲信号发生器,用于与记录承载介质上的移动机构的移动操作相关联地产生脉冲信号; 计数器,用于对脉冲信号进行计数,计数器的计数基准被布置为每当计数脉冲信号的预定数量的脉冲时返回到初始数据; 定时信号发生器,用于与旋转头的旋转相关联地产生定时信号; 以及控制装置,用于基于计数器的计数数据和定时信号形成用于控制换档机构的控制信号。