公开(公告)号：US4402018A

公开(公告)日：1983-08-30

申请号：US270592

申请日：1981-06-04

申请人： Yoshiyo Wada ,  Hisao Kinjo ,  Keiji Ozawa ,  Kazuo Tatsuguchi ,  Kunio Goto ,  Atsumi Hirata

发明人： Yoshiyo Wada ,  Hisao Kinjo ,  Keiji Ozawa ,  Kazuo Tatsuguchi ,  Kunio Goto ,  Atsumi Hirata

IPC分类号： H04N5/903 ,  G11B27/00 ,  G11B27/028 ,  G11B27/30 ,  H04N5/92 ,  H04N5/76

CPC分类号： H04N5/92 ,  G11B27/005 ,  G11B27/028 ,  G11B27/3054 ,  H04N5/9201 ,  G11B2220/20

摘要： A recording system records a television video signal of 60 fields per second converted from a signal of the picture image content of a cinematographic film for projection at 24 film frames per second, in a manner such that the video signal has parts in each of which the picture image content of one and the same film frame continues during at least 4 fields thereof, along a spiral track on a rotating recording medium rotating at a rotational speed of 900 revolutions per second at a recording rate of 4 fields per revolution of the recording medium. The rotating recording medium thus recorded has a part on which the picture image content of one and the same film frame is recorded over a part of a length of the track corresponding to at least one revolution of the recording mediu

摘要翻译： 记录系统记录电视视频

公开(公告)号：US4199782A

公开(公告)日：1980-04-22

申请号：US852366

申请日：1977-11-16

申请人： Yoshiyo Wada ,  Kunio Goto ,  Hisao Kinjo

发明人： Yoshiyo Wada ,  Kunio Goto ,  Hisao Kinjo

IPC分类号： G11B3/44 ,  G11B3/46 ,  G11B9/07 ,  H04R9/12 ,  H04N5/80

CPC分类号： G11B9/075 ,  G11B3/44 ,  G11B3/46 ,  H04R9/12

摘要： A reproducing stylus traces a track of a recording medium, in which track an information signal is recorded as variations of geometrical shape, and reproduces as variations in capacitance the information signal thus recorded. The reproducing stylus comprises a reproducing stylus main structure having a tip part with a flat sliding contact face for slidingly contacting at least one track of the recording medium at a time, and an electrode secured to the reproducing stylus main structure at the tip part thereof and adapted to trace one track and reproduce the information signal as the variations in capacitance in accordance with the variations in geometrical shape. The electrode has over a specific distance over the tip part of the stylus main structure from the extreme tip thereof, a width in the width direction of the track which is less than the width of the track. The extreme tip of the electrode has a flat or linear tip end contacting the track.

摘要翻译： 再现触笔跟踪记录介质的轨道，在该轨道中，信息信号被记录为几何形状的变化，并且作为如此记录的信息信号的电容变化再现。 再现触针包括具有具有平滑的滑动接触面的顶端部分的再现触笔主结构，用于一次滑动地接触记录介质的至少一个轨道，以及在其尖端部分处固定到再现触针主结构的电极， 适于跟踪一个轨道并根据几何形状的变化再现信息信号作为电容的变化。 电极从其尖端超过触针主结构的尖端部分的特定距离，轨道的宽度方向上的宽度小于轨道的宽度。 电极的尖端具有接触轨道的平坦或线性的尖端。

公开(公告)号：US4497052A

公开(公告)日：1985-01-29

申请号：US221922

申请日：1980-12-30

申请人： Yoshiyo Wada ,  Kunio Goto ,  Hisao Kinjo

发明人： Yoshiyo Wada ,  Kunio Goto ,  Hisao Kinjo

IPC分类号： G11B3/44 ,  G11B3/46 ,  G11B9/07 ,  H04R9/12 ,  H04N5/80

CPC分类号： H04R9/12 ,  G11B3/44 ,  G11B3/46 ,  G11B9/075

摘要： A reproducing stylus traces a track of a recording medium, in which track an information signal is recorded as variations of geometrical shape, and reproduces as variations in capacitance the information signal thus recorded. The reproducing stylus comprises a reproducing stylus main structure having a tip part with a flat sliding contact face for slidingly contacting at least one track of the recording medium at a time, and an electrode secured to the reproducing stylus main structure at the tip part thereof and adapted to trace one track and reproduce the information signal as the variations in capacitance in accordance with the variations in geometrical shape. The electrode has over a specific distance over the tip part of the stylus main structure from the extreme tip thereof, a width in the width direction of the track which is less than said width of the track. The extreme tip of the electrode having a flat or linear tip end contacting the track.

摘要翻译： 再现触笔跟踪记录介质的轨道，在该轨道中，信息信号被记录为几何形状的变化，并且作为如此记录的信息信号的电容变化再现。 再现触针包括具有具有平滑的滑动接触面的顶端部分的再现触笔主结构，用于一次滑动地接触记录介质的至少一个轨道，以及在其尖端处固定到再现触笔主结构的电极，以及 适于跟踪一个轨道并根据几何形状的变化再现信息信号作为电容的变化。 电极从其尖端超过触针主结构的尖端部分的特定距离，轨道的宽度方向上的宽度小于轨道的宽度。 电极的尖端具有接触轨道的平坦或线性尖端。

公开(公告)号：US4273967A

公开(公告)日：1981-06-16

申请号：US31035

申请日：1979-04-18

申请人： Yoshiyo Wada ,  Kunio Goto ,  Hisao Kinjo

发明人： Yoshiyo Wada ,  Kunio Goto ,  Hisao Kinjo

IPC分类号： G11B3/44 ,  G11B3/46 ,  G11B9/07 ,  H04R9/12 ,  H04N5/80

CPC分类号： G11B3/46 ,  G11B3/44 ,  G11B9/075 ,  H04R9/12

摘要： A reproducing stylus traces a track of a recording medium, in which track an information signal is recorded as variations of geometrical shape, and reproduces as variations in capacitance the information signal thus recorded. The reproducing stylus comprises a reproducing stylus main structure having a tip part with a flat sliding contact face for slidingly contacting a plurality of track of the recording medium at a time, and an electrode secured to the reproducing stylus main structre at the tip part thereof and adapted to trace one track and reproduce the information signal as the variations in capacitance in accordance with the variations in geometrical shape. The electrode has over a specific distance over the tip part of the stylus main structure from the extreme tip thereof, a constant width in the width direction of the track which is less than the width of the track. The extreme tip of the electrode has a flat or linear tip end contacting the track.

摘要翻译： 再现触笔跟踪记录介质的轨道，在该轨道中，信息信号被记录为几何形状的变化，并且作为如此记录的信息信号的电容变化再现。 再现记录笔包括一个再现触控笔主体结构，其具有一个尖端部分，该尖端部分具有平滑的滑动接触面，用于一次滑动地接触该记录介质的多个轨迹;以及一个电极，其固定在其尖端部分处的再现触针主结构， 适于跟踪一个轨道并根据几何形状的变化再现信息信号作为电容的变化。 电极从触头的顶端超过触针主结构的尖端部分的特定距离，轨道的宽度方向上的宽度小于轨道的宽度。 电极的尖端具有接触轨道的平坦或线性的尖端。

公开(公告)号：US4486791A

公开(公告)日：1984-12-04

申请号：US374781

申请日：1982-05-04

申请人： Yoshiyo Wada ,  Hisao Kinjo ,  Ichiro Ueno ,  Yoshihiko Honjo ,  Kazuo Tatsuguchi ,  Juichi Shikunami

发明人： Yoshiyo Wada ,  Hisao Kinjo ,  Ichiro Ueno ,  Yoshihiko Honjo ,  Kazuo Tatsuguchi ,  Juichi Shikunami

IPC分类号： H04N5/85 ,  G11B7/09 ,  G11B7/12 ,  H04N5/76 ,  G11B7/00

CPC分类号： H04N5/7605 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/12

摘要： An optical apparatus reproduces an information signal recorded as pits along track turns of a rotating recording medium. At least one kind of reference signal is recorded along and overlapping the lateral edges of the adjacent track turns of the information signal. A light source projects a first light beam onto the surface of the recording medium to simultaneously reproduce the information and reference signals. A detector responds to reflections of the projected light which includes and reproduces the information signal and the reference signal. The optical system is controlled so that the center of the light beam coincides with the centerline of the track. A circuit separates the reference signal from the total reproduced signal and produces a tracking control signal in response thereto.The optical system also projects a second light beam onto the recording medium and its reflected component is used for focus control. The depth of focus of the objective lens is substantially equal to or less than two times the pit depth, so that the focussing point of the reproduction light beam coincides with the upper surface of the rotating recording medium or the bottom surface of the pits. Thereby resulting in fine reproduction without introducing second-order harmonic distortion.

摘要翻译： 光学装置沿着旋转记录介质的轨道匝再现记录为凹坑的信息信号。 至少一种参考信号沿信息信号的相邻轨道匝的横向边缘记录并重叠。 光源将第一光束投射到记录介质的表面上，以同时再现信息和参考信号。 检测器对投影光的反射进行响应，该反射包括并再现信息信号和参考信号。 控制光学系统使得光束的中心与轨道的中心线重合。 电路将参考信号与总再现信号分离，并响应于此产生跟踪控制信号。

公开(公告)号：US4327430A

公开(公告)日：1982-04-27

申请号：US55752

申请日：1979-07-06

申请人： Yoshiyo Wada ,  Hisao Kinjo ,  Ichiro Ueno

发明人： Yoshiyo Wada ,  Hisao Kinjo ,  Ichiro Ueno

IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/013 ,  G11B7/09 ,  G11B11/05 ,  G11B21/10 ,  G11B23/36 ,  H04N5/80 ,  G11B11/00

CPC分类号： G11B7/24085 ,  G11B11/05 ,  G11B21/10 ,  G11B23/36 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/0901 ,  G11B7/0938

摘要： An information signal recording medium of rotary type has a flat surface with successions of pits formed therein as respective concavities in response to an information signal. The successions of pits constitute respective circular tracks of a specific pitch. Each it is formed with a width, equal to the width of a track, which is substantially equal to or greater than said pitch of the track.

摘要翻译： 旋转型的信息信号记录介质具有响应于信息信号而形成有相应凹坑的凹坑的平坦表面。 凹坑的连续构成特定节距的相应圆形轨迹。 它们每个都形成一个等于轨道宽度的宽度，该宽度基本上等于或大于轨道的间距。

公开(公告)号：US4420827A

公开(公告)日：1983-12-13

申请号：US186297

申请日：1980-09-11

申请人： Yoshiyo Wada ,  Hisao Kinjo ,  Ichiro Ueno

发明人： Yoshiyo Wada ,  Hisao Kinjo ,  Ichiro Ueno

IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/013 ,  G11B7/09 ,  G11B7/125 ,  G11B11/05 ,  G11B21/10 ,  G11B23/00 ,  G11B23/36 ,  H04N5/83 ,  G11B11/00

CPC分类号： G11B7/24085 ,  G11B11/05 ,  G11B21/10 ,  G11B23/0007 ,  G11B23/36 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/125

摘要： An information signal recording medium of rotary type has a flat surface with first succession of pits formed therein as respective concavities in response to a first signal and with second succession of pits formed therein as respective concavities in response to a second signal. The second succession of pits are formed at positions substantially intermediate between the centerlines of adjacent tracks formed by the first succession of pits. Each pit of the first succession of pits and each pit of the second succession of pits respectively have widths W1 and W2 and depths D1 and D2, wherein the relationships between the widths and said depths are so selected that the levels L1 and L2 of the first and second signals which are reproduced when the first and second succession of pits are traced and thereby reproduced by reproducing means will be such that the level L1 is greater than the level L2, and the difference between the levels L1 and L2 will be greater than a specific level difference.

摘要翻译： 旋转型的信息信号记录介质具有平坦表面，其中形成有第一连续凹坑的凹坑作为响应于第一信号的各个凹部，并且响应于第二信号而在其中形成有凹陷的第二连续凹坑作为相应的凹部。 第二连续的凹坑形成在基本上在由第一连续凹坑形成的相邻轨道的中心线之间的位置处。 凹坑的第一连续凹坑和第二连续凹坑的每个凹坑的每个凹坑分别具有宽度W1和W2以及深度D1和D2，其中宽度和所述深度之间的关系如此选择，使得第一 并且当第一和第二连续的凹坑被跟踪并由再现装置再现时再现的第二信号将使得电平L1大于电平L2，并且电平L1和L2之间的差将大于 具体水平差异。

公开(公告)号：US4503529A

公开(公告)日：1985-03-05

申请号：US357355

申请日：1982-03-12

申请人： Yoshiyo Wada ,  Kunio Goto ,  Hideaki Takehara

发明人： Yoshiyo Wada ,  Kunio Goto ,  Hideaki Takehara

IPC分类号： G11B9/07 ,  G11B9/06

CPC分类号： G11B9/075

摘要： For detection of signals recorded in the form of minute pits along tracks as capacitance variations, a record stylus is disclosed as comprising a shank having a portion of cross-sectional area decreasing toward one end of the stylus. A diamond, partially embedded in the shank, has a decreasing cross-sectional area toward said end of the stylus as a continuation of the decreasing cross-section of the shank. The bottom and rear face of the diamond are inclined so that the adjacent angle therebetween is smaller than 90 degrees. An electrode attached to the rear face of the diamond extends from the bottom of the diamond toward the other end of the stylus. The electrode is thus inclined in a direction opposite to the direction of movement of the recording medium to provide less concentration of electric lines of force on the rear bottom edge thereof.

摘要翻译： 为了检测作为电容变化沿着轨道以微小凹坑的形式记录的信号，公开了一种记录触针，包括具有朝向触针的一端减小的横截面面积的一部分的柄。 部分地嵌入在柄中的金刚石具有朝向所述触针的所述端部的横截面积减小，作为所述柄的横截面减小的延续。 金刚石的底面和背面倾斜，使得它们之间的相邻角度小于90度。 附着在金刚石背面的电极从金刚石的底部向触针的另一端延伸。 因此，电极在与记录介质的移动方向相反的方向上倾斜，以在其后底边缘上提供较少的电力线浓度。

公开(公告)号：US4488281A

公开(公告)日：1984-12-11

申请号：US357354

申请日：1982-03-12

申请人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Keiji Segawa

发明人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Keiji Segawa

IPC分类号： G11B9/07 ,  G11B9/00

CPC分类号： G11B9/075

摘要： A capacitance detection type record stylus comprises a conductive shank and a diamond partially embedded in the shank so that the diamond projects downwardly from one end of the shank. The shank is formed with a bottom face for making slidable contact with the disk record. The shank and diamond are formed with a pair of common rear faces inclined with respect to the axis of the stylus to define an electrode forming face therebetween which extends from the bottom face of the diamond partially into the shank. The electrode forming face is inclined at an acute angle with respect to the axis so that the lower end of the electrode forming face is located at a point forward with respect to the upper end thereof and subtends at the lower end thereof at such an angle that the diamond can be lapped without causing defects to occur on the lapped surfaces. The electrode forming face is entirely covered by a conductive layer so that the latter establishes electrical connection with the shank to allow signals detected by the electrode to pass through the shank to an external circuit.

摘要翻译： 电容检测型记录笔包括导电柄和部分嵌入柄中的金刚石，使得金刚石从柄的一端向下突出。 柄形成有用于与盘记录滑动接触的底面。 柄和金刚石形成有相对于触针的轴线倾斜的一对公共后表面，以在其间限定一个从金刚石的底面部分延伸到柄中的电极形成面。 电极形成面相对于轴线倾斜成锐角，使得电极形成面的下端位于相对于其上端向前的点，并且在其下端处以与下端相对的角度 可以研磨金刚石而不会在研磨表面上发生缺陷。 电极形成面完全由导电层覆盖，使得后者与柄建立电连接，以允许由电极检测到的信号通过柄到外部电路。

公开(公告)号：US4357699A

公开(公告)日：1982-11-02

申请号：US247489

申请日：1981-03-25

申请人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Kyusaku Suga ,  Hitoshi Watanabe

发明人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Kyusaku Suga ,  Hitoshi Watanabe

IPC分类号： G11B9/07 ,  G11B3/44

CPC分类号： G11B9/075

摘要： A stylus for detecting signals as electrostatic capacitance variations of the information recorded in the form of geometric variations on a disc record comprises a diamond body and a stylus electrode attached to one surface of the body which makes contact with the disc record. The electrode extends downward to the plane of the contact face of the diamond body to detect the recorded information. The crystallographic orientations of the diamond body are such that the contact face is inclined at a predetermined angle to a crystallographic plane having the tendency to wear substantially at the same rate as the wearing rate of the electrode at its downward tip so that the electrode keeps contact with the record surface for a long period of use.

摘要翻译： 用于检测信号作为在盘记录上以几何变化形式记录的信息的静电电容变化的触笔包括附着在与盘记录接触的身体的一个表面上的金刚石体和触针电极。 电极向下延伸到金刚石体的接触面的平面以检测记录的信息。 金刚石体的晶体取向使得接触面以与电极在其向下尖端处的磨损速率基本相同的速度倾向于结晶面倾斜，使得电极保持接触 记录表面长期使用。