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    • 2. 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。
    • 3. 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。
    • 4. 发明授权
    • Recording apparatus
    • 记录装置
    • US4638390A
    • 1987-01-20
    • US804350
    • 1985-12-03
    • Susumu KozukiKenichi NagasawaHiroo EdakuboJunichi SatoNobutoshi Takayama
    • Susumu KozukiKenichi NagasawaHiroo EdakuboJunichi SatoNobutoshi Takayama
    • G11B15/18G11B15/467G11B5/56
    • G11B15/4678G11B15/1875
    • A recording apparatus for recording an information signal on a record bearing medium comprises recording means for recording the information signal on the record bearing medium, instruction means for producing an instruction to stop a recording operation, stopping means for bringing the recording operation to a stop in response to the instruction of the instruction means, pilot signal generating means for generating pilot signals of frequencies differing from each other in a first generating pattern one after another, control means for controlling the pilot signal generating means to generate the pilot signals in a second generating pattern in response to the instruction of the instruction means, and superimposing means for superimposing upon the information signal the pilot signals generated by the pilot signal generating means.
    • 用于在记录承载介质上记录信息信号的记录装置包括用于将信息信号记录在记录载体介质上的记录装置,用于产生停止记录操作的指令的指令装置,用于使记录操作停止的停止装置 响应于指令装置的指令,导频信号产生装置,用于产生一个接一个地以第一产生模式彼此不同的频率的导频信号;控制装置,用于控制导频信号产生装置在第二产生中产生导频信号 响应于指令装置的指令的模式,以及叠加装置,用于将由导频信号产生装置产生的导频信号叠加在信息信号上。
    • 5. 发明授权
    • Rotating head type reproducing apparatus
    • 旋转头型重放装置
    • US4991031A
    • 1991-02-05
    • US145656
    • 1988-01-13
    • Nobutoshi TakayamHiroo EdakuboSusumu KozukiMasahiro TakeiKenichi Nagasawa
    • Nobutoshi TakayamHiroo EdakuboSusumu KozukiMasahiro TakeiKenichi Nagasawa
    • G11B5/592G11B15/18G11B15/467
    • G11B15/1875G11B15/4671G11B5/5922
    • A rotating head type reproducing apparatus arranged to reproduce a recorded signal by tracing, one after another, with rotating heads many recording tracks formed on a record bearing medium at a given track pitch comprises: Moving apparatus for moving the record bearing medium in a direction crossing the recording tracks; shifting apparatus for shifting the positions of the rotating heads in a direction crossing their rotation plane; means apparatus for generating a pulse signal related to the record bearing medium moving operation of the moving apparatus; apparatus for generating timing signals related to the rotation of the rotating heads; first count apparatus for counting the pulse signal, the count value of the first count apparatus being arranged to return to an initial data every time a predetermined number n of the pulse signal is counted; second count apparatus arranged to read a data corresponding to the count value of the first count apparatus at a timing related to the timing signal and to count the pulse signal; and control apparatus which forms a control signal for controlling the shifting apparatus by using the count data of the second count apparatus.
    • 一种旋转头型再现装置,被配置为通过以旋转头一个接一个地跟踪以特定的轨道间隔形成在记录载体介质上的多个记录轨道来再现记录信号包括:用于沿记录方向交叉的方向移动记录载体介质的移动装置 录音轨; 用于使旋转头的位置沿与其旋转平面交叉的方向移动; 用于产生与移动装置的记录承载介质移动操作相关的脉冲信号的装置; 用于产生与旋转头的旋转相关的定时信号的装置; 用于对脉冲信号进行计数的第一计数装置,每当计数脉冲信号的预定数量n时,第一计数装置的计数值被布置为返回到初始数据; 第二计数装置,被配置为在与定时信号相关的定时读取与第一计数装置的计数值相对应的数据,并对脉冲信号进行计数; 以及控制装置,其通过使用第二计数装置的计数数据形成用于控制换档装置的控制信号。
    • 7. 发明授权
    • Tracking control using signals reproduced by erase head
    • 使用由擦除头再现的信号进行跟踪控制
    • US4802031A
    • 1989-01-31
    • US875330
    • 1986-06-17
    • Kenichi NagasawaHiroyuki TakimotoMitsuhiro OtokawaHiroo EdakuboSusumu KozukiKeiji Satoh
    • Kenichi NagasawaHiroyuki TakimotoMitsuhiro OtokawaHiroo EdakuboSusumu KozukiKeiji Satoh
    • G11B15/467G11B5/584
    • G11B15/4678
    • There is disclosed an information signal reproducing apparatus for reproducing information signals from a magnetic record bearing medium on which information signals are recorded with pilot signals of four different frequencies recurrently superimposed thereon. The apparatus comprises magnetic heads which are arranged to reproduce said information signals and said pilot signals by tracing said magnetic record bearing medium and an erasing head which is arranged to trace said magnetic record bearing medium in equal tracing direction to that of said magnetic heads and which is able to erase at least the information signals recorded on said magnetic record bearing medium and to reproduce said pilot signals. At the time of controlling a tracing position of said magnetic heads relative to said magnetic record bearing medium, four local pilot signals having the same frequencies as those of said pilot signals, respectively, are recurrently generated in a predetermined rotation. The state of said pilot signals reproduced by said magnetic heads is monitored, using said four local pilot signals and the tracing position on said medium of said magnetic heads is controlled, depending upon the state of said pilot signals. The level of a specific pilot signal from among said pilot signals reproduced by said erasing head is detected and the generating sequence of the local pilot signals is changed over, depending upon a result of such detention. According to such construction it is possible to effect the tracking control with high precision and high response speed.
    • 公开了一种信息信号再现装置,用于从其中记录信息信号的磁记录承载介质再现信息信号,其中循环叠加有四个不同频率的导频信号。 该装置包括磁头,其被布置成通过跟踪所述磁记录载体介质和擦除头来再现所述信息信号和所述导频信号,所述擦除头被布置成以与所述磁头相同的跟踪方向跟踪所述磁记录载体介质,并且 能够至少擦除记录在所述磁记录载体介质上的信息信号并再现所述导频信号。 在控制所述磁头相对于所述磁记录承载介质的跟踪位置时,分别具有与所述导频信号相同频率的四个本地导频信号以预定的旋转方式产生。 使用所述四个本地导频信号监视由所述磁头再现的所述导频信号的状态,并且根据所述导频信号的状态来控制所述磁头的所述介质上的跟踪位置。 检测由所述擦除头重放的所述导频信号中的特定导频信号的电平,并根据这种拘留的结果改变本地导频信号的生成顺序。 根据这种结构,可以以高精度和高响应速度实现跟踪控制。