公开(公告)号：MX9708326A

公开(公告)日：1998-01-31

申请号：MX9708326

申请日：1996-05-13

Applicant: MACROVISION CORP

Inventor： RYAN JOHN O ,  MORRISON ERIC FRASER ,  COPELAND GREGORY C

IPC: G07D07/00 ,  G11B03/90 ,  G11B05/09 ,  G11B05/78 ,  G11B05/82 ,  G11B15/04 ,  G11B15/52 ,  G11B19/04

Abstract: Un sistema para proporcionar datos de rastreo y seguridad para medios de video de renta, entre los que se incluyen discos digitales de video y casetes digitales de video. Los nuevos formatos de las reproductoras de video y medios permiten la inclusion de características de seguridad que permiten el rastreo de la renta de esos medios y, a la vez, evitan la renta no autorizada de los mismos. Cada reproductora incluye un circuito de decision que reproduce un disco particular ( o cinta) solamente si el numero de identificacion de la reproductora, que está grabado en una tarjeta de memoria de autorizacion, separada, especial, es idéntico al numero de identificacion de la reproductora grabado en la misma, y si un numero de identificacion de película que se lee opticamente a partir del disco coincide con el numero de identificacion de película grabado en la tarjeta especial. Se proporciona un aparato correspondiente en el establecimiento de renta de video con el que, al momento de rentar el video, se graba en la tarjeta de autorizacion, en forma cifrada, el numero de identificacion y el numero de la reproductora de discos en particular para la cual está destinada la renta. El cifrado utiliza una clave especial de un sistema publico de claves, la clave publica y el modulo se graban previamente en la porcion optica del disco.

公开(公告)号：EP0162349A3

公开(公告)日：1988-09-07

申请号：EP85105240

申请日：1985-04-30

Applicant: International Business Machines Corporation

Inventor： Best, John Steward ,  Romankiw, Lubomyr Taras ,  Scranton, Robert Alan ,  Thompson, David Allen

IPC: G11B05/596 ,  G11B21/10 ,  G11B05/74 ,  G11B05/82 ,  G11B09/02 ,  G11B09/04 ,  G11B09/06 ,  G11B23/00 ,  G11B07/24

CPC classification number: G11B7/0938 ,  G11B5/58 ,  G11B5/596 ,  G11B5/74 ,  G11B5/82 ,  G11B7/24 ,  G11B23/30

Abstract: A data recording medium including a structure providing variable electromagnetic property (variable, resistance, capacitive, or other variable impedance or other variable electromagnetic property) contrast on the surface marking servo tracks. Such media include magnetic or optical storage disks and tapes. The media can be conductive metallic or nonmetallic and can be composed for example of poorly conductive media, dielectric media, or semiconductive media. The variable electromagnetic impedance can vary in the optical, electrical or other portions of the electromagnetic spectrum. A very small variation of the thickness of the protective layer above the magnetic recording medium is employed to mark the servo track information of the medium. Information to be detected by means of a capacitive sensor can be recorded in the protective layer above or below the magnetic recording or optical storage medium. For example, a thin film metallic protective layer 0.07 micrometers thick can be patterned with about 0.02 micrometers of the protective layer. For a plated disk, the top 0.02 micrometers of the protective layer can be patterned. A pattern for providing a variable impedance for representing data can be formed subtractively by sputter etching, or additively formed by a lift-off process or by deposition through a mask, or by the oxidation of or nitriding of materials such as Al, Si or valve metals.

公开(公告)号：WO1995015555A1

公开(公告)日：1995-06-08

申请号：PCT/US1994013735

申请日：1994-12-01

Applicant: BARADUN R & D. LTD ,  BAR-GADDA, Ronny

Inventor： BARADUN R & D. LTD

IPC: G11B05/82

CPC classification number: G11B5/00 ,  B82Y10/00 ,  G11B5/6005 ,  G11B5/7315 ,  G11B5/743 ,  G11B5/82 ,  G11B5/8404 ,  G11B5/855 ,  G11B11/10502 ,  G11B11/10582 ,  G11B11/10584

Abstract: A disk medium (21') includes a substrate (23') and a designed topography (29') of individually magnetizable features (33') formed on the surface of the substrate. At least a portion of the topography is formed from an etched layer of magnetizable material (25') deposited on the surface of the substrate. An information handling system records information on the disk medium magnetically and reads the recorded information optically or magnetically.

Abstract translation: 盘介质（21'）包括基板（23'）和形成在基板的表面上的各自可磁化特征（33'）的设计形貌（29'）。 形貌的至少一部分由沉积在基底表面上的可磁化材料（25'）的蚀刻层形成。 信息处理系统以磁性方式记录磁盘介质上的信息，并以光学或磁性方式读取所记录的信息。

公开(公告)号：WO1986000741A1

公开(公告)日：1986-01-30

申请号：PCT/US1985001182

申请日：1985-06-19

Applicant: FALCORE CO., LTD.

Inventor： FALCORE CO., LTD. ,  COE, Thomas, U.

IPC: G11B05/82

CPC classification number: B29D17/007 ,  G11B5/716 ,  G11B5/82 ,  G11B7/26 ,  G11B23/0021

Abstract: A substrate including a disk (36) having a pair of opposed faces and being coined to provide a sub-micron flatness and smoothness for the disk faces. The coined disk can then be coated with a layer of storage material and used as a storage medium. Apparatus and a method for forming the coined substrate includes means for moving a plurality of disks along a predetermined path (56) after the disks have been formed by blanking or stamping. The disks are cleaned before being coined and then stacked into containers which can be closed for transit to a point of use. The coining of the disks and the placement of the disks in containers is done under clean room conditions and the resulting coined substrates are free of flaws and defects encountered with the practice of conventional substrate forming techniques.

Abstract translation: 一种基板，包括具有一对相对面的盘（36）并且被打印以为盘面提供亚微米平坦度和平滑度。 然后可以用一层储存材料涂覆该模型盘并用作存储介质。 用于形成所述模制基材的装置和方法包括用于在通过消隐或冲压形成所述盘之后沿预定路径（56）移动多个盘的装置。 在制造之前将盘清洁，然后将其堆放到容器中，该容器可以被封闭以转运到使用点。 盘的压印和盘在容器中的放置是在洁净室条件下进行的，并且所得到的模压基底没有常规基板成型技术的缺陷和缺陷。

公开(公告)号：EP0191567A3

公开(公告)日：1988-03-16

申请号：EP86300492

申请日：1986-01-24

Applicant: VICTOR COMPANY OF JAPAN, LIMITED

Inventor： Kinjo, Hisao

IPC: G11B23/033 ,  G11B17/32 ,  G11B23/00 ,  G11B05/82

CPC classification number: G11B17/32 ,  G11B23/00 ,  G11B23/0035 ,  G11B23/033

Abstract: @ An information storage disc assembly comprises at least one flexible information storage disc (12, 12A, 12B) having a recording layer (12b, 12Ab, 12Bb) on one surface thereof, at least one rigid rotary support plate (13, 13A, 13B) fixed coaxially to the information storage disc and having a diameter approximately equal to or greater than a diameter of said information storage disc, and one or a plurality of air introducing space or holes (15, 22, 26, 32, 33, 36, 15A, 15B, 26A, 26B, 32A, 32B, 33A, 33B, 46, 36A, 36B, 121) provided in a vicinity of centers of the information storage disc and the rotary support plate for introducing air between the other surface of the information storage disc and one surface of the rotary support plate during a high speed rotation of the information storage disc assembly so that an air cushion is generated between the information storage disc and the rotary support plate. The air cushion supports the information storage disc so that the information storage disc will not rotate during the high speed rotation.

公开(公告)号：EP0049938A3

公开(公告)日：1982-09-08

申请号：EP81302151

申请日：1981-05-14

Applicant: DYSAN CORPORATION

Inventor： James, Richard Negus ,  Goodale, Kenneth Stewart

IPC: G11B05/84 ,  G11B05/82

CPC classification number: G11B5/845

Abstract: Apparatus and a method for positioning a flexible magnetic recording medium, such as a floppy disk, (12; 112), in such a way as to permit magnetic means (14; 162) on opposed sides of the medium to orient the particles in the magnetic coatings on the medium immediately after the coatings have been applied to the medium and as the medium is rotated. In one embodiment, the apparatus includes stabilizing devices (22) which are located at circumferentially spaced locations about the outer periphery of the medium (12) when the medium is mounted for rotation. Each device comprises a pair of substantially J-shaped, wire-like members (38) arranged to define a gap (46) between which the outer peripheral margin of the medium (12) passes. The J-shaped members (38) can be tubular or solid. If tubular, they can be used direct fluid under pressure onto the opposite sides of the medium as the medium rotates. In a second embodiment, a pair of bowl-shaped members (125,126) are hingedly mounted together and moved into face-to-face relationship with each other but are spaced apart to present an outer peripheral, continuous gap (128) which receives the outer peripheral margin of the medium (112) when the medium is rotatably mounted on one of the bowl-shaped members. Air is directed into the interiors of the bowl-shaped members and then outwardly therefrom through the gap on opposite sides of the medium to provide Venturi effect to keep the outer peripheral margin of the medium centered in the gap and stabilized against deviation out of the plane of rotation of the medium.

公开(公告)号：EP0125478A3

公开(公告)日：1987-05-13

申请号：EP84103878

申请日：1984-04-09

Applicant: International Business Machines Corporation

Inventor： Krongelb, Sol ,  Romankiw, Lubomyr Taras ,  Scranton, Robert Alan ,  Thompson, David Allen

IPC: G11B05/82 ,  G11B05/70

CPC classification number: G11B5/596 ,  G11B5/012 ,  G11B5/82

Abstract: A servo track in the form of a patterned thin metallic film (15; 25) is disposed between a magnetic record medium (14;: 24) and a dielectric substrate (12; 22). The dielectric substrate (12; 22) can be in the form of a coating on a metallic substrate (11; 21). Where the magnetic record medium is composed of magnetic particles bound in a matrix, the matrix and the dielectric substrate are preferably composed of the same material. An additional layer (26, Figure 2) of dielectric material may be disposed between the metallic servo track film (25) and the magnetic record medium (24).

公开(公告)号：EP0111217A3

公开(公告)日：1984-10-17

申请号：EP83111733

申请日：1983-11-23

Applicant: Tabor Corporation

Inventor： Holmes, William A.

IPC: G11B17/00 ,  G11B23/00 ,  G11B05/82

CPC classification number: G11B17/0282 ,  G11B5/825 ,  G11B23/0035

Abstract: A magnetic disk memory seats a memory disk with a consistent high accuracy by engagement on only one side of the disk with a drive chuck (18) that imparts both a circumferential disk-rotating force and a radial disk-locating force. The two forces firmly seat an angled pair of precision disk faces (76, 78) onto the drive spindle (44). The memory disk further can attach at only an inner periphery to the disk hub, by means of a selectively compliant adhesive tape, to allow the disk to deflect elastically away from the hub for accurate head penetration at inner recording tracks. The drive spindle has an arcuate, partial circumferential portion (100), defining substantially less than a full circumferential portion, that engages the angled pair of precision disk faces (76, 78).

Abstract translation: 磁盘存储器通过仅具有盘的一侧的驱动卡盘（18）接合而具有一致的高精度来存储存储盘，所述驱动卡盘（18）具有周向盘旋转力和径向盘定位力。 两个力将一对成对的精密盘面（76,78）固定在驱动轴（44）上。 存储盘还可以通过选择性顺应的粘合带仅在内周缘附接到盘毂，以允许盘弹性地离开轮毂偏转，以在内部记录轨道处精确地进行头部穿透。 驱动主轴具有弓形的部分圆周部分（100），其限定实质上小于整个圆周部分，其接合成角度的一对精密盘面（76,78）。

公开(公告)号：EP0194890A3

公开(公告)日：1988-04-06

申请号：EP86301838

申请日：1986-03-13

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： Alexander, Jerry L. c/o Minnesota Mining and ,  Narayan, Sankar B. c/o Minnesota Mining and ,  Nelson, Charles E. c/o Minnesota Mining and ,  Gerfast, Sten R. c/o Minnesota Mining and

IPC: G11B23/00 ,  G11B05/82

CPC classification number: G11B5/825 ,  G11B23/005

Abstract: Stretched surface recording disk (SD) 10 comprises an diameters respectively. The SD is annealed twice during annular support 12 having raised annular ridges 42 and 28 at manufacture to relieve stress in the stretched film 14. This its inside and outside diameters 22 and 30 with a base annealing results in SD essentially free from track anisotropy portion 24 in between the two ridges, and an annular and stress distribution anisotropy in the plane of the disk. As recording medium film 14 held in radial tension and a result, data tracks are more stable than in previous SD, stretched across the base portion by adhering the film to track density can be greater, and the SD is generally more attachment surfaces 48 and 36 near the inside and outside reliable.

公开(公告)号：EP0109481A3

公开(公告)日：1986-03-19

申请号：EP83105929

申请日：1983-06-16

Applicant: International Business Machines Corporation

Inventor： Weiss, Joel Richard

IPC: G11B05/64 ,  G11B05/82

CPC classification number: G11B5/72 ,  G11B5/64

Abstract: A magnetic recording disk is formed with a silicon substrate, the surfaces of which are essentially free of asperities. A non-magnetic undercoat layer is coated on one or both surfaces of the substrate. A magnetic layer is applied to the free surface of the or each undercoat layer. A non-magnetic overcoat layer is applied to the or each magnetic layer.