公开(公告)号：US5793542A

公开(公告)日：1998-08-11

申请号：US768671

申请日：1996-12-18

申请人： Hiroshi Kondo ,  Shinji Oota ,  Tomoyasu Yamada ,  Harumasa Oota ,  Hiroyoshi Kondo

发明人： Hiroshi Kondo ,  Shinji Oota ,  Tomoyasu Yamada ,  Harumasa Oota ,  Hiroyoshi Kondo

IPC分类号： G02B5/10 ,  B60R1/06 ,  B60R1/08

CPC分类号： B60R1/082

摘要： An automobile mirror assembly improves safety during driving of a car by widening the visual field of the driver with little distortion. The mirror is mounted on a car with a support member and a holding member to be adjustable in its position. A gradually changing mirror section is provided on at least one of an upper, lower and side edges of a main mirror section of the mirror. A surface of a gradually changing mirror section is defined by a plurality of intersections between curved surfaces provided in at least one of a vertical and horizontal directions with hyperbolic curves provided in a direction perpendicular to one of the vertical and horizontal directions. Each respective curved surface passes through circular arcs, the radii of curvatures of the circular area being calculated from Equation 1 indicated below. The radii of curvatures of the circular arcs gradually become smaller in an extending direction. The intersection of the hyperbolic curves and the curved surfaces define the surface of the gradually changing mirror. The Equation 1 is as follows: ##EQU1## where: A1, A2, . . . An-1, An are asphericity factors representing asphericity at respective portions in the at least one of the horizontal and the vertical directions, n is any integer, K=0, and C=1/r0, and wherein r0 represents a radius of curvature at a starting position of the gradually changing mirror section.

摘要翻译： 汽车后视镜组件通过以很小的变形加宽驾驶员的视野来提高驾驶汽车时的安全性。 镜子安装在具有支撑构件和保持构件的汽车上，以可调节其位置。 在反射镜的主镜部分的上，下和侧边缘中的至少一个上设置逐渐变化的镜部分。 逐渐变化的镜面部分的表面由垂直于垂直和水平方向之一的方向上设置的双曲线的垂直和水平方向中的至少一个设置的曲面之间的多个交点限定。 每个相应的曲面通过圆弧，圆形区域的曲率半径由下面所示的等式1计算。 圆弧的曲率半径在延伸方向逐渐变小。 双曲线和曲面的交点定义渐变镜的表面。 等式1如下：其中：A1，A2，。 。 。 An-1，An是表示水平方向和垂直方向中的至少一方的各部分的非球面性的非球面度因子，n是任何整数，K = 0，C = 1 / r0，其中，r0表示曲率半径 在逐渐变化的镜部分的起始位置。

公开(公告)号：US5469307A

公开(公告)日：1995-11-21

申请号：US115790

申请日：1993-09-03

申请人： Tomoyasu Yamada ,  Nobutoshi Fukuda

发明人： Tomoyasu Yamada ,  Nobutoshi Fukuda

IPC分类号： G11B15/02 ,  G11B15/17 ,  G11B15/68 ,  G11B27/00 ,  G11B27/10 ,  G11B27/36 ,  G11B15/18

CPC分类号： G11B15/02 ,  G11B15/17 ,  G11B15/6835 ,  G11B27/002 ,  G11B27/36 ,  G11B2220/41 ,  G11B2220/90 ,  G11B2220/913 ,  G11B27/107

摘要： A magnetic tape cassette recording and playback apparatus, particularly for digital audio tapes, capable of performing a variety of controlled playback and recording operations in accordance with a user-inputted program. The cassettes are stored on shelves in a magazine and selectively extracted and transported to a drive unit for playing and recording. In one mode, the apparatus can carry out continuous recording from one cassette to another, and cassettes can be designated for recording, for instance, of only particular types of music. The cassettes are rewound at the completion of a playing program so as to be ready for the start of search operations for a subsequent program.

摘要翻译： 一种特别是用于数字音频磁带的磁带盒式记录和重放装置，能够根据用户输入的程序执行各种受控的重放和记录操作。 盒子被存放在杂志箱中的货架上并选择性地提取并传送到用于播放和记录的驱动单元。 在一种模式中，该装置可以执行从一个盒到另一盒的连续记录，并且盒可以被指定用于仅记录特定类型的音乐。 在播放节目完成时，盒子被倒带，以便准备好开始对后续节目的搜索操作。

公开(公告)号：US4930031A

公开(公告)日：1990-05-29

申请号：US270336

申请日：1988-11-14

申请人： Shinichi Nagahara ,  Tomoyuki Suzuki ,  Tomoyasu Yamada ,  Tokihiro Takahashi ,  Ichiro Miyake

发明人： Shinichi Nagahara ,  Tomoyuki Suzuki ,  Tomoyasu Yamada ,  Tokihiro Takahashi ,  Ichiro Miyake

IPC分类号： G11B5/008 ,  G11B15/18 ,  G11B20/10 ,  G11B27/10 ,  G11B27/30

CPC分类号： G11B20/10527 ,  G11B15/1875 ,  G11B27/107 ,  G11B27/3063 ,  G11B5/0086 ,  G11B2220/90 ,  G11B2220/913

摘要： An apparatus for recording and reproducing digital signals using a helical scan in which a drum of reduced diameter is employed without changing the tape format. Two heads are mounted on a drum at the same height in opposition to each other with a product of the diameter D of the drum and the wrap-around angle of the tape with respect to the rotary drum being constant while the speed of the drum is increased to a speed N times higher than a predetermined speed. One of the heads is mounted higher than the other by a distance of (1-1/N)P to provide a step, and the other head being is mounted at a position an angle behind the position at which the other head directly opposes the one of the heads, which angle is defined by: ##EQU1## where L is the track length in the tape format used when the rotary drum rotates at the predetermined rotational speed, .THETA. is the track angle, P is the track pitch, and C is a constant dependent on the drum diameter D and the wrap-around angle. Methods for performing high speed searches with this apparatus are also disclosed.

摘要翻译： 一种用于使用螺旋扫描来记录和再现数字信号的装置，其中采用直径减小的滚筒而不改变磁带格式。 两个头部以相同的高度彼此相对地安装在滚筒上，鼓的直径D与卷筒相对于旋转滚筒的卷绕角恒定，而滚筒的速度为 增加到比预定速度高N倍的速度。 其中一个头部被安装得高于另一个距离（1-1 / N）P，以提供一个台阶，另一个头部被安装在另一个头部直接与其相对的位置 其中一个头，哪个角度由以下定义：其中L是当旋转鼓以预定旋转速度旋转时使用的磁带格式的轨道长度，THETA是轨道角度，P是轨道间距，C 取决于鼓径D和卷绕角度是一个常数。 还公开了使用该装置进行高速搜索的方法。

公开(公告)号：US4864436A

公开(公告)日：1989-09-05

申请号：US099460

申请日：1987-09-21

申请人： Yutaka Masumoto ,  Tomoyasu Yamada ,  Seiichi Yokosawa

发明人： Yutaka Masumoto ,  Tomoyasu Yamada ,  Seiichi Yokosawa

IPC分类号： G11B5/09 ,  G11B5/024 ,  G11B15/467

CPC分类号： G11B15/4678 ,  G11B5/024

摘要： In a digital audio recording/reproducing apparatus of the rotary head type, erasure of signals in previously recorded tracks, which are used to control the operation of a tracking servomotor, is enhanced by the provision of a magnetic field generator prior to the point where overwriting occurs. As a result, errors in the tracking error signal arising due to unerased remnants of the previously recorded signals are eliminated.

摘要翻译： 在旋转磁头类型的数字音频记录/再现装置中，通过在覆盖点之前提供磁场发生器来增强用于控制跟踪伺服电动机的操作的先前记录磁迹中的信号的擦除 发生。 结果，消除了由于先前记录的信号的未被残留而引起的跟踪误差信号的误差。