公开(公告)号：US4899235A

公开(公告)日：1990-02-06

申请号：US152377

申请日：1988-02-04

申请人： Kiyoshi Kano ,  Nobuyuki Kaku ,  Atsuo Osawa ,  Shinya Fujimori ,  Yoshihiro Fukagawa

发明人： Kiyoshi Kano ,  Nobuyuki Kaku ,  Atsuo Osawa ,  Shinya Fujimori ,  Yoshihiro Fukagawa

IPC分类号： G11B15/675 ,  G11B15/665

CPC分类号： G11B15/6653

摘要： A tape loading mechanism for a video cassette recording apparatus in which a magnetic tape held in the cassette is withdrawn therefrom by a tape loading arm and is wound around a rotary cylinder. During this time, the cassette is fixed on the upper surface of a chassis having a cam bore, which is driven by a rotary arm in which a pin inserted in the cam bore is set up. This cam bore is provided with a first cam surface having a radius of curvature equal to that of a locus of a turning movement of the pin, a second cam surface formed continuously from the first cam surface and having a radius of curvature different from that of a locus of a turning movement of the pin, and a third cam surface formed continuously from the second cam surface and having a radius of curvature equal to that of a locus of a turning movement of the pin. Accordingly, the movement of the cassette is started at a predetermined period of time after the movement of the tape loading arm has been started, and it is completed before the movement of the tape loading arm has been completed.

摘要翻译： 用于盒式录像装置的磁带装载机构，其中保持在磁带盒中的磁带通过磁带装载臂从磁带装载臂中取出并卷绕在旋转磁盘上。 在此期间，盒被固定在具有凸轮孔的底盘的上表面上，该凸轮孔由其中设置有插入凸轮孔中的销的旋转臂驱动。 该凸轮孔设置有第一凸轮表面，其第一凸轮表面的曲率半径等于销的转动运动轨迹的曲率半径，第二凸轮表面从第一凸轮表面连续形成，并且具有与 销的转动轨迹，以及从第二凸轮表面连续地形成的曲率半径等于销的转动轨迹的曲率半径的第三凸轮表面。 因此，在磁带装载臂的移动已经开始之后的预定时间段开始磁带盒的移动，并且在磁带装载臂的移动已经完成之前完成。

公开(公告)号：US4780783A

公开(公告)日：1988-10-25

申请号：US509048

申请日：1983-06-29

申请人： Atsuo Osawa ,  Kenji Ogiro ,  Nobuyuki Kaku ,  Shinichi Goto

发明人： Atsuo Osawa ,  Kenji Ogiro ,  Nobuyuki Kaku ,  Shinichi Goto

IPC分类号： G11B23/08 ,  G11B23/04 ,  G11B23/087

CPC分类号： G11B23/08735 ,  G11B23/045

摘要： A locking device for a cover of a magnetic tape cartridge for locking a pivotable cover for covering magnetic tape inlet and outlet ports of the magnetic tape cartridge, including a projection formed on an arm for pivotally supporting the pivotable cover which is engageable with an engaging claw section of a locking member which further includes an operation section and a resilient section. The locking member is pivotally supported on a magnetic tape cartridge case and urged by the biasing force of the resilient section to bring the engaging claw section into engagement with the projection. The operation section of the locking member is located in a position in which it is capable of cooperating with an unlocking pin moved from three directions, to thereby give latitude to the process for loading a magnetic tape cartridge on a magnetic recording and reproducing apparatus.

摘要翻译： 一种用于锁定用于覆盖磁带盒的磁带入口和出口的可枢转盖的磁带盒的锁定装置，包括形成在臂上的突起，用于枢转地支撑可枢转的盖，其可与接合爪接合 锁定构件的截面还包括操作部和弹性部。 锁定构件枢转地支撑在磁带盒壳体上并且由弹性部分的偏置力推动，以使接合爪部分与突起接合。 锁定构件的操作部分位于能够与从三个方向移动的解锁销相配合的位置，从而给予将磁带盒装载在磁记录和再现装置上的处理。

公开(公告)号：US4725910A

公开(公告)日：1988-02-16

申请号：US799021

申请日：1985-11-18

申请人： Nobuyuki Kaku ,  Atsuo Osawa ,  Masanori Kochi ,  Hitoshi Takizawa

发明人： Nobuyuki Kaku ,  Atsuo Osawa ,  Masanori Kochi ,  Hitoshi Takizawa

IPC分类号： G11B5/52 ,  G11B5/53 ,  G11B15/61 ,  G11B21/04 ,  G11B21/21

CPC分类号： G11B5/53 ,  G11B15/61

摘要： A rotary cylinder device for helical scan type magnetic recording/reproducing apparatus including a rotary cylinder having an axis of rotation arranged in opposition a stationary cylinder in the direction of the axis of rotation with a small gap therebetween. The rotary cylinder has an end surface facing the stationary cylinder and an outer peripheral surface, recesses formed in the end surface and opening in the outer peripheral surface so as to extend therefrom radially inwardly over a small distance. Each of the recesses has a leading end wall and a trailing end wall, as viewed in the direction of rotation of the rotary cylinder. Magnetic heads are fixed to the rotary cylinder and are positioned in the recesses and have outer extremities projecting beyond the outer peripheral surface of the rotary cylinder. The distance between the leading end wall and the trailing end wall of each recess progressively decreases towards the axis of rotation of the rotary cylinder so that the distance is greatest at the outer end of the recess adjacent the magnetic head and the smallest at the inner end of the recess remote from the magnetic head.

摘要翻译： 一种用于螺旋扫描式磁记录/再现装置的旋转圆筒装置，包括旋转圆筒，旋转圆筒具有旋转轴线，旋转轴线在旋转轴线的方向上相对于固定圆柱体在其间具有小间隙。 旋转圆筒具有面向静止圆筒的端面和外周面，在端面形成的凹部和外周面的开口，从而径向向内延伸一小段距离。 每个凹部具有从旋转圆筒的旋转方向观察的前端壁和后端壁。 磁头固定在旋转圆筒上，并位于凹槽中，并且外端突出超过旋转圆筒的外圆周表面。 每个凹部的前端壁和后端壁之间的距离朝向旋转圆筒的旋转轴逐渐减小，使得在邻近磁头的凹部的外端处的距离最大，而在内端的最小的距离最大 的凹部远离磁头。

公开(公告)号：US4862300A

公开(公告)日：1989-08-29

申请号：US111426

申请日：1987-10-22

申请人： Nobuyuki Kaku ,  Kenji Ogiro ,  Atsuo Osawa ,  Takashi Sasaki ,  Kouhei Takita

发明人： Nobuyuki Kaku ,  Kenji Ogiro ,  Atsuo Osawa ,  Takashi Sasaki ,  Kouhei Takita

IPC分类号： G11B15/665

CPC分类号： G11B15/6653

摘要： A tape guide moving mechanism for use with magnetic tape reproducing apparatus having a cylindrical cylinder mounted with a rotatable magnetic head thereon, and adapted to draw a magnetic tape from a tape cartridge and wound the magnetic tape on the cylindrical outer surface of said cylinder, comprising: a plurality of tape guides having a first group of tape guides and a second group of tape guides, drawing out the magnetic tape in a direction parallel to a plane perpendicular to the rotating axes of said supply and take-up reels; and drawing out the magnetic tape through said second position in slanting relation to a plane perpendicular to the rotating axis of said supply and take-up reel and winding said thus drawn magnetic tape around said cylinder in slanting relation to the plane section thereof.

摘要翻译： 一种用于磁带重放装置的磁带引导移动机构，具有在其上安装有可旋转磁头的圆柱形汽缸，并且适于从磁带盒中抽出磁带并将磁带缠绕在所述气缸的圆柱形外表面上，包括 ：具有第一组带引导件和第二组带引导件的多个带引导件，沿垂直于所述供应和卷取卷轴的旋转轴的平面方向拉出磁带; 并且通过所述第二位置以垂直于所述供给和收带卷轴的旋转轴的平面倾斜地拉出所述磁带并将所述拉伸的所述磁带绕所述圆筒以与其平面部分倾斜的方式卷绕。

公开(公告)号：US5659424A

公开(公告)日：1997-08-19

申请号：US241633

申请日：1994-05-12

申请人： Atsuo Osawa ,  Hiroki Yoshikawa ,  Shigeru Mori ,  Naoyuki Ogura

发明人： Atsuo Osawa ,  Hiroki Yoshikawa ,  Shigeru Mori ,  Naoyuki Ogura

IPC分类号： G02B9/60 ,  G02B13/18 ,  G02B13/24 ,  G02B3/00

CPC分类号： G02B9/60 ,  G02B13/18 ,  G02B13/24

摘要： An image display device which is compact on the whole and low in cost, and which uses a plurality of projection lens systems each of which is constituted by five lens groups including a first aspherical lens group, a second aspherical lens group, a third biconvex lens group, a fourth aspherical lens group and a fifth aspherical lens group which are arranged in this order successively from a screen side, the third lens group having refractive power of not lower than 70% of the total power of the projection lens system, the respective peripheral shapes of the first and second aspherical lens groups being set to have a predetermined relation, a low-dispersion high-index glass material being used for a convex lens of a green projection lens system, a high-dispersion high-index glass material being used for convex lenses of blue and red projection lens systems.

摘要翻译： 一种整体紧凑且成本低的图像显示装置，其使用多个投影透镜系统，每个投影透镜系统由包括第一非球面透镜组，第二非球面透镜组，第三双凸透镜的五个透镜组构成 组，第四非球面透镜组和第五非球面透镜组，其从屏幕侧依次排列，第三透镜​​组的折射力不小于投影透镜系统的总功率的70％，折射率不小于投影透镜系统的总功率的70％ 第一非球面透镜组和第二非球面透镜组的周边形状被设定为具有预定关系，低分散高折射率玻璃材料用于绿色投影透镜系统的凸透镜，高分散高折射率玻璃材料为 用于蓝色和红色投影透镜系统的凸透镜。

公开(公告)号：USRE33784E

公开(公告)日：1991-12-31

申请号：US531084

申请日：1990-05-31

申请人： Atsuo Osawa ,  Kenji Ogiro ,  Shouzou Yokoo ,  Hidekazu Takeda

发明人： Atsuo Osawa ,  Kenji Ogiro ,  Shouzou Yokoo ,  Hidekazu Takeda

IPC分类号： G11B15/22 ,  G11B15/665

CPC分类号： G11B15/6653 ,  G11B15/22

摘要： A magnetic recording/reproducing apparatus for recording onto or reproducing from a magnetic tape housed in a cassette by using a rotary magnetic head having a tape withdrawal arrangement for winding a portion of the tape between the two reels in the cassette around the rotary magnetic head by a predetermined angle. A tape drive feed the magnetic tape at a constant speed, with a reel drive being provided for driving either one of the two reels so as to take up the magnetic tape in the reel driven by the reel drive, and with brake arrangement for braking the rotation of the reels. A ring-shaped cam operating member is provided in the outer peripheral surface or the inner peripheral surface thereof with cam surfaces each for effecting the operation of the respective elements in response to the mode of operation of the magnetic recording/reproducing apparatus. The selective operation is specifically determined by the rotational position of the ring-shaped cam operating member, and the rotational position is varied in response to the mode of operation. A detector is provided for detecting the rotational positions in the ring-shaped cam operating member.

公开(公告)号：US5926153A

公开(公告)日：1999-07-20

申请号：US592177

申请日：1996-01-26

申请人： Tetsu Ohishi ,  Takahiko Yoshida ,  Hiroki Yoshikawa ,  Yutaka Matsuda ,  Hideo Tanide ,  Shigeru Mori ,  Atsuo Osawa ,  Koji Hirata

发明人： Tetsu Ohishi ,  Takahiko Yoshida ,  Hiroki Yoshikawa ,  Yutaka Matsuda ,  Hideo Tanide ,  Shigeru Mori ,  Atsuo Osawa ,  Koji Hirata

IPC分类号： G03B21/62 ,  G03B21/10 ,  G09B9/32 ,  H04N5/74 ,  B09G5/00

CPC分类号： G09B9/32

摘要： A multi-display apparatus includes a plurality of rear projection-type display devices each in which projection light from image sources is projected through projection lenses onto a rear projection surface of a rear projection screen to form a picture image on a front viewing surface of the rear projection screen, the plurality of rear projection-type display devices being combined together in contiguous relation to one another to form a large screen. An overall front viewing surface of the large screen is formed into a concave surface curved both in a horizontal visibility angle direction and a vertical visibility angle direction. A light-absorbing portion is formed on the front viewing surface of the rear projection screen, and the light-absorbing portion absorbs projection light which passes through one rear projection screen, and is incident as external light on another rear projection screen, thereby preventing a picture image from being degraded.

摘要翻译： 多显示装置包括多个后投影式显示装置，每个背投影型显示装置，其中来自图像源的投影光通过投影透镜投射到背投屏幕的后投影表面上，以在前投影屏幕的前视面上形成图像 背投影屏幕，多个后投影式显示装置彼此连续地组合在一起形成大屏幕。 大屏幕的整体前视面形成为在水平可视角度方向和垂直视角方向上均弯曲的凹面。 在后投影屏幕的前视面形成有吸光部，吸光部吸收通过一个背面投影用屏幕的投影光，作为外部光入射到另一个后投影屏上，从而防止 图片图像降级。

公开(公告)号：US5590943A

公开(公告)日：1997-01-07

申请号：US77780

申请日：1993-06-18

申请人： Takahiko Yoshida ,  Koji Hirata ,  Atsuo Osawa ,  Kiyoshi Wada ,  Hiroki Yoshikawa

发明人： Takahiko Yoshida ,  Koji Hirata ,  Atsuo Osawa ,  Kiyoshi Wada ,  Hiroki Yoshikawa

IPC分类号： G09G3/18 ,  G03B21/28 ,  G03B21/62 ,  G03B21/625 ,  H04N5/74

CPC分类号： G03B21/28 ,  G03B21/625

摘要： A transmission screen for a rear projection type image display apparatus having at least one image generation source for displaying images, at least one projection lens for enlarging and projecting images displayed on the at least one image generation source onto a rear portion of the transmission screen for display. The transmission screen of the image display apparatus enables display of the images projected onto the transmission screen with a contrast of at least 70. Further, the transmission screen enables display with a field angle within a range of at least 72.degree. to less than 100.degree.. The transmission screen also includes a glossy light absorbing layer and a substantially smooth mirror surface at a light exit surface thereof.

公开(公告)号：US5485308A

公开(公告)日：1996-01-16

申请号：US387354

申请日：1995-02-13

申请人： Koji Hirata ,  Takahiko Yoshida ,  Hiroki Yoshikawa ,  Masayuki Muranaka ,  Atsuo Osawa ,  Yutaka Matuda

发明人： Koji Hirata ,  Takahiko Yoshida ,  Hiroki Yoshikawa ,  Masayuki Muranaka ,  Atsuo Osawa ,  Yutaka Matuda

IPC分类号： G03B21/62 ,  H04N5/74 ,  G03B21/60

CPC分类号： G03B21/625

摘要： A rear-projection screen for a rear-projection image display apparatus comprises a Fresnel lens sheet, a first lenticular lens sheet, and a second lenticular lens sheet or a Fresnel lens sheet, first and second lenticular lens sheets and a light absorbing sheet. A light entrance surface of the first lenticular lens sheet or a light exit surface thereof, or both of these surfaces are formed by contiguously and vertically arranging a plurality of horizontally elongate lenticular lenses. A thickness of the first lenticular lens sheet is selected to be the thinner than thicknesses of the Fresnel lens sheet, the second lenticular lens sheet, and the light absorbing sheet. The entrance surface and the exit surface of the second lenticular lens sheet are formed by contiguously and horizontally arranging a plurality of vertically elongate lenticular lenses. Particles of a light diffusing material are not necessarily dispersed in the base sheet of the second lenticular lens sheet. The rear-projection image display apparatus provided with this rear-projection screen has satisfactory focusing characteristics and enhanced vertical directional characteristics and is capable of displaying an image in high brightness and high contrast.

摘要翻译： 背投影像显示装置的背投屏幕包括菲涅尔透镜片，第一双凸透镜片，第二双凸透镜片或菲涅耳透镜片，第一和第二柱状透镜片和光吸收片。 第一双凸透镜片的光入射表面或其光出射表面或这两个表面的两个形状通过连续且垂直地布置多个水平细长的双凸透镜而形成。 第一双凸透镜片的厚度被选择为比菲涅尔透镜片，第二双凸透镜片和光吸收片的厚度薄。 第二双凸透镜片的入射面和出射面通过连续且水平地布置多个垂直细长的双凸透镜形成。 光漫射材料的颗粒不一定分散在第二双凸透镜片的基片中。 设置有该背投屏幕的背投影像显示装置具有令人满意的聚焦特性和增强的垂直方向特性，并且能够以高亮度和高对比度显示图像。

公开(公告)号：US06396506B1

公开(公告)日：2002-05-28

申请号：US09142831

申请日：1998-09-15

申请人： Takeshi Hoshino ,  Yoshimasa Yokoyama ,  Takeshi Minemoto ,  Masahide Aoki ,  Atsuo Osawa ,  Kunio Umehara

发明人： Takeshi Hoshino ,  Yoshimasa Yokoyama ,  Takeshi Minemoto ,  Masahide Aoki ,  Atsuo Osawa ,  Kunio Umehara

IPC分类号： G09G534

CPC分类号： G09G5/14 ,  G06F3/04855 ,  G06F3/0488 ,  G06F2200/1614 ,  G06F2203/04803 ,  G06T3/60 ,  G09G5/00 ,  G09G2340/0492

摘要： A display device and operation method thereof for displaying images processed on an image processing apparatus on a horizontally installed, upward facing display screen with the operation method for said display device comprising; a step for specifying the number of screens for display on the display screen, a step for displaying image information on a screen with a predetermined image direction in said display device based on the specified number of screens, a step to change the established display direction, a step to display said screen based on instructions for changing the display direction; and further comprising a step to specify the number of screens for display on said display screen and the direction of said display screen, a step to display an image on the display screen based on the specified number of screens and specified direction of the display screen thus allowing an ideal screen to be provided on a single display device for a plurality of users by changing the direction of the screen along with the number of screens for display. A user's own screen currently in use, can further be changed to face other users thus permitting joint use of information shown on the display screen of the display device.

摘要翻译： 一种显示装置及其操作方法，用于在水平安装的向上显示屏幕上显示在图像处理装置上处理的图像，其中所述显示装置的操作方法包括： 用于指定在显示屏幕上显示的画面数量的步骤，用于基于指定数量的画面在所述显示装置中在具有预定图像方向的屏幕上显示图像信息的步骤，改变所建立的显示方向的步骤， 基于用于改变显示方向的指令来显示所述屏幕的步骤; 并且还包括指定在所述显示屏幕上显示的屏幕数量和所述显示屏幕的方向的步骤，基于指定的屏幕数量和显示屏幕的指定方向在显示屏幕上显示图像的步骤，从而 允许通过改变屏幕的方向以及显示屏幕的数量来在多个用户的单个显示设备上提供理想的屏幕。 当前使用的用户自己的屏幕可以进一步改变以面对其他用户，从而允许联合使用显示设备的显示屏幕上显示的信息。