公开(公告)号：EP0739006B1

公开(公告)日：2002-09-04

申请号：EP96105863.3

申请日：1996-04-15

申请人： Nakamichi Corporation

发明人： Nakamichi, Niro

IPC分类号： G11B17/22 ,  G11B17/04

CPC分类号： G11B17/04 ,  G11B17/223

公开(公告)号：EP0696029A3

公开(公告)日：1997-02-05

申请号：EP95109805.2

申请日：1995-06-23

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B19/00

CPC分类号： G11B19/20 ,  G11B25/043

摘要： A high torque motor drive, for rotating turntables, moving optical pickups in CD players, and other applications, employs two motors, drivingly connected in parallel. The outputs of motors used in compact machines are characterized by torque ripple curves in which torque peaks occur at predictable rotational phase angles of the motor's rotor. In the present invention, the rotors of the motors are interconnected by the drive train in such a way that the torque ripples cancel each other out. In a preferred embodiment of the invention, the torque ripple curve has torque peaks that occur every 60 degrees of angular displacement of the rotor. The rotors of the two motors are drivingly interconnected to maintain a one-to-one relationship between the rotor angular positions. The stators of the motors are positioned so that the torque peaks of one of the two motors occurs at a time different from those of the other motor. At least partial cancellation of the torque peaks is achieved. If only partial cancellation occurs, the result is that the drive cogs at a frequency that is twice that of a single motor. In addition, the stopping resolution for the drive of the invention is lower than in a system that employs one motor. Thus a CD player's optical pickup positioning resolution can be substantially increased. Smooth drive output is also achieved, which is a benefit for rotating a CD's turntable. Moreover, high torque is available in a compact unitary configuration.

公开(公告)号：EP0743639A2

公开(公告)日：1996-11-20

申请号：EP96107580.1

申请日：1996-05-13

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B17/00 ,  G11B17/26 ,  G11B17/10

CPC分类号： G11B17/18 ,  G11B17/10

摘要： A disk changer employs two disk guides to support a recorded disk at opposite points along its edge. One of the disk guides has a belt that revolves around two pulleys. A surface of the belt frictionally engages an edge surface of the disk. The other disk guide has two surfaces, a low-friction guide surface parallel to the recorded surface of the disk and a resilient sloped surface that forms an angle with both the recorded surface of the disk and the perpendicular to the recorded surface of the disk. Both guides are urged together, and, as a result, the sloped surface is urged against the disk edge. Because of the slope of the surface, the sloped surface meets a corner where the recorded surface of the disk meets the edge surface of the disk and urges the disk's recorded surface toward the guide surface. This stabilizes the disk against pitching motion.

摘要翻译： 磁盘更换器采用两个磁盘引导器来支持记录磁盘沿其边缘的相对点。 其中一个盘导轨具有围绕两个滑轮旋转的皮带。 带的表面摩擦地接合盘的边缘表面。 另一个盘引导件具有两个表面，平行于盘的记录表面的低摩擦引导表面和与盘的记录表面和与盘的记录表面垂直的角度形成一个角度的弹性倾斜表面。 两个导轨被一起推动，结果，倾斜的表面被推靠在盘形边缘上。 由于表面的斜率，倾斜的表面与盘的记录表面与盘的边缘表面相遇的角落相遇并且将盘的记录表面推向引导表面。 这样可以使盘抵抗俯仰运动。

公开(公告)号：EP0732693A1

公开(公告)日：1996-09-18

申请号：EP96103380.0

申请日：1996-03-05

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B17/22 ,  G11B17/04

CPC分类号： G11B17/223 ,  G11B17/04

摘要： A disk playback device precisely positions disks of various sizes at playback, store, and eject positions. A disk is inserted between two longitudinal disk guides, movable in a direction perpendicular to a direction of transport of the disk. An indicator indicates the amount of separation of the two disk guides caused by insertion, thereby indicating the size of the disk. A belt revolves along one of the disk guides frictionally engaging an edge of the disk and rolling the disk along the opposite disk guide. A flap at an insertion aperture is dropped onto the surface of the disk as it is drawn into the disk player until the flap drops off the trailing edge of the disk indicating the disk is at a registration position. A controller which counts pulses from an encoder connected to the drive mechanism to determine the accruing distance of the disk from the registration position. The controller stops the belt after a specified number of pulses to position the disk center at the playback position. The number of pulses depends on the size of the disk since the position of the center of the disk at the registration position depends on the disk size. The disk is transported to a storage position and an eject position by similarly counting pulses. By counting pulses from a single sensed registration position, the need for separate sensors to indicate the separate playback, store, and eject positions is avoided.

摘要翻译： 磁盘播放设备在播放，存储和弹出位置时精确地定位各种尺寸的磁盘。 一个盘被插入在两个纵向盘导向件之间，可在与盘的传送方向垂直的方向上移动。 指示器指示由插入引起的两个盘导轨的分离量，从而指示盘的尺寸。 皮带沿着一个盘形导轨旋转，摩擦地接合盘的边缘并沿着相对的盘引导件滚动盘。 插入孔的折片在被拉入盘播放器时落到盘的表面上，直到瓣片从盘的后缘掉落，指示盘处于对位位置。 计算来自连接到驱动机构的编码器的脉冲的控制器，以确定盘从注册位置的累积距离。 控制器在指定数量的脉冲之后停止皮带，将磁盘中心定位在播放位置。 脉冲数取决于磁盘的大小，因为磁盘在对位位置的中心位置取决于磁盘大小。 通过类似地计数脉冲将盘传送到存储位置和弹出位置。 通过对来自单个感测对准位置的脉冲进行计数，可以避免需要单独的传感器来指示单独的重放，存储和弹出位置。

公开(公告)号：EP0731466A1

公开(公告)日：1996-09-11

申请号：EP96103376.8

申请日：1996-03-05

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B17/22 ,  G11B17/04

CPC分类号： G11B17/223 ,  G11B17/04

摘要： A disk transport mechanism for a disk player employs a fixed disk guide to support one edge of a disk and a drive-side disk guide, with a revolving belt, to support and drive an opposite edge of the disk. The disk is held between the fixed and drive-side disk guides to press the revolving belt against the disk edge causing the disk to roll along the fixed disk guide. The disk is positioned by registering its position using an engaging flap near an insertion aperture. Eject, playback, and storage positions are established by cumulating pulses from an encoder, connected to the belt drive, as the belt moves from a registration position to the target position. The fixed and drive-side disk guides are movably supported on a chassis and urged together by a spring. The guides have sufficient range of movement to accommodate 80 and 120 mm disks. The revolving belt is supported by a wall that prevents the belt from bowing under the force of the disk edge. Because the belt follows a linear path, the disk center follows a linear path. In addition, the disk center position is a linear function of displacement of the encoder. This makes design of the positioning logic simpler and therefore storable in a smaller memory. In addition, the present invention makes positioning reliable since the variable stretch properties of the belt do not have to be considered.

摘要翻译： 磁盘播放器的磁盘传输机构采用固定磁盘导向装置来支撑磁盘的一个边缘和驱动侧磁盘导向装置以及旋转带，以支撑和驱动磁盘的相对边缘。 磁盘固定在固定磁盘导向装置和驱动侧磁盘导向装置之间，将旋转磁带压靠磁盘边缘，使磁盘沿固定磁盘导向装置滚动。 通过使用插入孔附近的接合片来记录它的位置来定位盘。 当皮带从注册位置移动到目标位置时，通过累计来自连接到皮带驱动器的编码器的脉冲来建立弹出，回放和存储位置。 固定和驱动侧磁盘导向器可移动地支撑在底盘上并由弹簧一起推压。 导轨有足够的移动范围来容纳80和120毫米的磁盘。 旋转皮带由防止皮带在盘边缘的作用下弯曲的壁支撑。 由于皮带遵循线性路径，因此磁盘中心遵循线性路径。 此外，磁盘中心位置是编码器位移的线性函数。 这使得定位逻辑的设计更简单，因此可以存储在更小的存储器中。 此外，由于不必考虑皮带的可变拉伸特性，因此本发明使得定位可靠。

公开(公告)号：EP0686972A2

公开(公告)日：1995-12-13

申请号：EP95109015.8

申请日：1995-06-12

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B19/00

CPC分类号： G11B25/043 ,  G11B19/20

摘要： A motor drive, for rotating turntables and moving optical pickups in CD players, employs two motors, in parallel, to power a drive train. In players used to play CD-ROMs, a high torque power source is required to permit high rotation speeds demanded by these units. In the present invention, the rotors of the motors are positioned side-by-side with their drive shafts interconnected by the drive train. Output is transmitted by one of the motor shafts. By combining the motors in this way, high output torque is achieved with a compact design. In the preferred embodiment, the rotors of the two motors are drivingly interconnected so that there is a one-to-one relationship between the rotor angular positions. The stators of the motors are positioned so that the torque peaks of one of the two motors occurs at a time different from those of the other motor. At least partial cancellation of the torque peaks is achieved. If only partial cancellation occurs, the result is that the drive cogs at a frequency that is twice that of a single motor. This makes the stopping resolution for the drive of the invention lower than in a system that employs one motor. Thus the optical pickup's positioning resolution can be greater. If total cancellation occurs, smooth drive output is achieved, which is a benefit for rotating the turntable.

摘要翻译： 用于在CD播放器中旋转的转盘和移动光学拾取器的电动机驱动器并联地使用两个并联的电动机来驱动传动系。 在用于播放CD-ROM的播放器中，需要高扭矩电源来允许这些单元要求的高转速。 在本发明中，电动机的转子并联配置，其驱动轴通过传动系相互连接。 输出由一个电机轴传输。 通过以这种方式组合电机，通过紧凑的设计实现了高输出转矩。 在优选实施例中，两个电动机的转子被驱动地互连，使得在转子角位置之间存在一对一的关系。 电动机的定子被定位成使得两个电动机之一的扭矩峰值与另一个电动机的转矩峰值不同。 达到扭矩峰值的至少部分消除。 如果仅发生部分消除，结果是驱动器以一个单个电机的两倍的频率啮合。 这使得本发明的驱动器的停止分辨率低于采用一个电动机的系统的停止分辨率。 因此，光学拾取器的定位分辨率可以更大。 如果发生总体消除，则实现平滑的驱动输出，这对转盘的转动是有利的。

公开(公告)号：EP0877368A3

公开(公告)日：1999-11-03

申请号：EP98107904.9

申请日：1998-04-30

申请人： Nakamichi Corporation

发明人： Nakamichi, Niro

IPC分类号： G11B17/04

CPC分类号： G11B17/0515

摘要： A disk transfer device provides positive, reliable disk transfer. The device comprises a pair of moveable, opposed disk guide members which grip the outer edge of a disk disposed therebetween. A spring constantly urges the disk guide members closer together. A pinion gear connects the disk guide members and controls their movement together or apart. A bias device applies a torque to the pinion gear so as to urge the disk guide members together to increase the disk gripping force of the disk guide members during disk transfer.

摘要翻译： 磁盘传输设备提供正确可靠的磁盘传输。 该装置包括一对可移动的相对的盘引导构件，其夹持设置在其间的盘的外边缘。 弹簧不断地推动盘导向件靠近在一起。 小齿轮连接盘引导构件并一起控制它们的运动或分开。 偏置装置向小齿轮施加扭矩，以便在盘传送期间将盘引导构件推动在一起以增加盘引导构件的盘夹持力。

公开(公告)号：EP0739005A1

公开(公告)日：1996-10-23

申请号：EP96103379.2

申请日：1996-03-05

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B17/22 ,  G11B17/04

CPC分类号： G11B17/04 ,  G11B17/223

摘要： A compact disk player/changer transfers either a 5-1/4-inch or 3-1/2 inch size CDs inserted through an aperture and supported, at opposite contact points on its edge, between laterally movable left and right-side disk guides. The disk's left side contacts a belt revolved on the left-side disk guide. The disk's right side contacts a fixed wall on the right-side disk guide. The belt is supported by a pulley at an insertion end of the guides. The fixed wall of the right side disk guide extends all the way to the front of the disk player so that when a disk is inserted between the guides, the left-side contact point is on a curved portion of the belt reeved around the pulley and the right side contact point is on the fixed wall forward of the left-side contact point. The first and second disk guides are urged together, but the force is transmitted along a line forming an angle with respect to the direction of convergence of the two guides, the angle tending to force the disk inwardly and thereby counteracting the tendency of the disk to be forced or squeezed out from between the two guides. The result is that the disk is engaged and supported after only shallow insertion as compared to the depth required for a pair of guides, both having belts reeved around pulleys at the forward end.

摘要翻译： 光盘播放器/转换器将通过孔插入的5-1 / 4英寸或3-1 / 2英寸大小的CD转移并且在其边缘的相对接触点处支撑在可横向移动的左侧和右侧盘导轨之间 。 磁盘的左侧接触左侧磁盘导轨上旋转的皮带。 磁盘的右侧接触右侧磁盘导轨上的固定壁。 皮带由导轨插入端的滑轮支撑。 右侧磁盘导向装置的固定壁一直延伸到磁盘播放器的前部，以便当磁盘插入导向装置之间时，左侧接触点位于绕过滑轮的带的弯曲部分上， 右侧接触点位于左侧接触点前方的固定壁上。 第一和第二盘形导向器被推动在一起，但是该力沿着相对于两个导向器的会聚方向形成一定角度的直线传送，该角度倾向于迫使盘向内并由此抵消盘向 被迫从两个指南之间挤出。 其结果是，与仅需要一对导轨所需的深度相比，仅在浅插入后，盘被接合和支撑，两个导轨都在前端处具有围绕滑轮的带。

公开(公告)号：EP0731463A1

公开(公告)日：1996-09-11

申请号：EP96103371.9

申请日：1996-03-05

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B17/22 ,  G11B17/04

CPC分类号： G11B17/04 ,  G11B17/223

摘要： A disk transport mechanism for a disk player employs a fixed disk guide to support one edge of a disk and drive-side disk guide, with a revolving belt, to support and drive an opposite edge of the disk. The revolving belt is supported at two points by pulleys. The disk is held between the fixed and drive-side disk guides to press the revolving belt against the disk edge causing the disk to roll along the fixed disk guide. The fixed and drive-side disk guides are movably supported on a chassis and urged together by a spring. When a disk is transported to a playback position, the disk guides are separated to disengage the disk by a rack and pinion mechanism. The rack and pinion mechanism employs a pinion gear coaxially connected to one of the pulleys supporting the revolving belt. A drive gear, also coaxially connected with the pinion gear and pulley, is driven by an a motor on the chassis through an extensible transmission to power the revolving belt. The same motor and transmission shifts the drive-side disk guide laterally to separate the disk guides for playback by pivoting a rack, pivotably mounted on the chassis, toward the pinion gear to mesh with it. Thus, a single motor is used to drive both the disk transport mechanism and the separation mechanism that frees the disk for playback.

摘要翻译： 磁盘播放器的磁盘传输机构采用固定磁盘导向装置来支撑磁盘的一个边缘，并用旋转带支撑驱动侧磁盘导向装置，以支撑和驱动磁盘的相对边缘。 旋转皮带由两个滑轮支撑。 磁盘固定在固定磁盘导向装置和驱动侧磁盘导向装置之间，将旋转磁带压靠磁盘边缘，使磁盘沿固定磁盘导向装置滚动。 固定和驱动侧磁盘导向器可移动地支撑在底盘上并由弹簧一起推压。 当磁盘被传输到播放位置时，磁盘导轨被分离，以便通过齿轮齿条机构使磁盘脱离。 齿条小齿轮机构采用小齿轮，该小齿轮同轴地连接到支撑旋转带的滑轮之一。 与小齿轮和皮带轮同轴连接的传动齿轮由底盘上的电机通过可延伸的传动装置驱动，以便为旋转带提供动力。 通过将可枢转地安装在底盘上的齿条朝向小齿轮枢转以与其啮合，相同的电动机和传动装置横向地移动驱动侧盘导轨以分离盘导轨以进行回放。 因此，使用单个电机来驱动磁盘传输机构和释放磁盘以供重放的分离机构。

公开(公告)号：EP0708441A2

公开(公告)日：1996-04-24

申请号：EP95113170.5

申请日：1995-08-22

申请人： NAKAMICHI CORPORATION

发明人： Nakamichi, Niro

IPC分类号： G11B17/22 ,  G11B17/04

CPC分类号： G11B17/221

摘要： A disk playback device has at least one endless drive belt stretched along a direction of disk transport between a store position, a playback position and an eject position. The endless drive belt is translated in a direction perpendicular to the direction of disk transport along a plane parallel to said disk, allowing the drive belt to move away from said disk rim without requiring a large space parallel to the disk.

摘要翻译： 盘重放设备具有至少一个沿存储位置，重放位置和排出位置之间的盘传送方向延伸的环形传动带。 环形传动带沿着与盘片平行的平面垂直于盘片传送方向平移，允许传动带从盘片边缘移开而不需要平行于盘片的大空间。