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    • 33. 发明授权
    • Video camera and recorder system having two standby modes
    • 具有两种待机模式的摄像机和录像机系统
    • US4939597A
    • 1990-07-03
    • US308128
    • 1989-02-08
    • Masaya MaedaHiroyuki TakimotoSusumu Kozuki
    • Masaya MaedaHiroyuki TakimotoSusumu Kozuki
    • G11B31/00H04N5/225
    • H04N5/2251G11B31/006Y10S358/906
    • An information signal recording apparatus having a rotary head for recording information signals on a tape-shaped recording medium, a cylindrical member for supporting the rotary head, and having a peripheral surface, a head driving motor for rotating the rotary head at a predetermined speed, a tape loading arrangement for shifting the recording medium between a first position and a second position wherein when the medium is at the first position it does not contact the peripheral surface, while the medium is aligned with the peripheral surface when at the second position, a trigger switch operated by a manual operation for instructing a recording start by the rotary head, a control circuit for controlling the head driving motor and the tape loading arrangement, and a mode setting arrangement for setting the apparatus among a plurality of modes including a first mode in which the control circuit controls the head driving motor and the tape loading arrangement so that the rotary head rotates at the predetermined speed and the recording medium is at the second position, and in which the trigger switch is able to instruct the recording start, and a second mode in which the control circuit controls the head driving motor and the tape loading arrangement so that the rotary head does not rotate and the recording medium is at the second position, and in which the trigger switch is able to instruct the recording start.
    • 35. 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。
    • 36. 发明授权
    • Rotary head type reproducing apparatus
    • 旋转头式再现装置
    • US4796128A
    • 1989-01-03
    • US884759
    • 1986-07-11
    • Hiroyuki Takimoto
    • Hiroyuki Takimoto
    • G11B5/008G11B5/027G11B15/12G11B15/14G11B15/18H04N5/783
    • H04N5/783G11B15/125G11B15/14G11B15/1875G11B5/0086
    • A rotary head type reproducing apparatus for reproducing information signals recorded in a plurality of recording tracks by tracing, with rotary type magnetic heads, the recording tracks which are formed on a tape-shaped magnetic record bearing medium in a direction of crossing the longitudinal direction of the medium comprises: pairs of magnetic heads which are positioned in the vicinity of each other with each pair of heads arranged to have different azimuth angles from each other; a rotary member arranged to have the pairs of magnetic heads mounted on the circumference thereof; rotation period detecting means arranged to detect the rotation period of the rotary member and to produce a rotation period information signal corresponding to the rotation period detected; and output selection means for selectively producing, according to the rotation period information signal, the information signals reproduced from the recordng tracks by the pairs of magnetic heads through their tracing action on the tape-shaped magnetic record bearing medium.
    • 一种旋转磁头型再现装置,用于通过用旋转型磁头跟踪记录在多个记录磁道中的信息信号,记录轨道形成在带状磁记录载体介质上,沿纵向方向 所述介质包括:一对磁头,它们彼此相邻设置,每对磁头被设置为具有彼此不同的方位角; 旋转构件,其布置成使得成对的磁头安装在其圆周上; 旋转周期检测装置,被配置为检测旋转构件的旋转周期并产生与所检测的旋转周期对应的旋转周期信息信号; 以及输出选择装置,用于根据旋转周期信息信号,通过它们在带状磁记录承载介质上的跟踪动作来选择性地产生通过磁头对从记录轨道再现的信息信号。
    • 37. 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。
    • 38. 发明授权
    • Information signal reproducing apparatus with track pitch discriminating
function
    • 具有轨道音调判别功能的信息信号再生装置
    • US4760474A
    • 1988-07-26
    • US882183
    • 1986-07-07
    • Hiroyuki Takimoto
    • Hiroyuki Takimoto
    • G11B15/087G11B15/12G11B15/18G11B15/44G11B15/467G11B15/14
    • G11B15/1875G11B15/087G11B15/12G11B15/442G11B15/4678
    • An information signal reproducing apparatus for reproducing information signals from a record bearing medium having many recording tracks which are formed with the information signals on the medium and are spaced at a track pitch selected from a plurality of track pitches is arranged to reproduce the information signals by head means which traces the medium; to perform tracking control by using the signals reproduced by the head means; and to detect the track pitch by comparing with a reference level each of the levels of signals reproduced by the head means from recording tracks neighboring a recording track presently controlled by a tracking control action on both sides of the controlled track. After discriminating the track pitch, the apparatus selects the rotary heads with the proper width and sets the tape speed so that the speed reproduction is at the same speed at which the tape was recorded.
    • 一种用于从具有多个记录轨道的记录载体介质再现信息信号的信息信号再现装置被布置成通过在介质上形成的信息信号并以从多个轨道间距中选出的轨道间距间隔开来再现信息信号 用于追踪介质的头部装置; 通过使用由头部装置再现的信号来执行跟踪控制; 并且通过与由磁头装置再现的每个信号电平的参考电平进行比较,以便通过与受控磁道的两侧上通过跟踪控制动作控制的记录磁道相邻的记录磁道进行比较来检测磁道间距。 在区分轨道间距之后,设备选择具有适当宽度的旋转磁头并设置磁带速度,使得速度再现以与记录磁带相同的速度。
    • 39. 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。