公开(公告)号：US5293565A

公开(公告)日：1994-03-08

申请号：US831026

申请日：1992-02-04

申请人： Glen A. Jaquette ,  John E. Kulakowski ,  Judson A. McDowell ,  Rodney J. Means

发明人： Glen A. Jaquette ,  John E. Kulakowski ,  Judson A. McDowell ,  Rodney J. Means

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/24 ,  G11B7/26 ,  G11B7/28 ,  G11B20/12 ,  G11B27/10 ,  G11B5/09

CPC分类号： G11B7/0079 ,  G11B20/1258 ,  G11B27/105 ,  G11B7/28 ,  G11B2020/10916 ,  G11B2020/1257

摘要： Data-storing disks, preferably each disk having a single spiral track, have addressable tracks that are independent of the length of disk or spiral track revolutions. Each revolution may contain a non-integral number of addressable tracks and sectors. An optical disk is used to describe the invention. The circumferential location of the tracks and sectors precess circumferentially. A plurality of radially disposed revolution bands each contain a fixed number of the revolutions an increasing number of the addressable tracks in the radially outer more ones of the bands. It is preferred that the number of bands be 2.sup.n, where n is an integer. Each band is divided into a plurality of revolution groups, each group having a fixed number of revolutions. Each group in a band has a like number of the addressable tracks. A so-called anchor sector has one end anchored to a reference circumferential position on the disk. Each revolution group begins with an anchor sector, all other sectors in the group are positioned circumferentially with respect to the anchor sector. Addressable track seeking, alternate embodiments and fabrication of a disk are described.

摘要翻译： 优选地，具有单个螺旋轨道的每个盘的数据存储盘具有独立于盘或螺旋轨道转数的可寻址轨道。 每次革命可能包含非整数个可寻址轨道和扇区。 光盘用于描述本发明。 轨道和扇区的圆周位置周向地进动。 多个径向设置的旋转频带各自包含固定数量的转数，在径向外部的多个频带中的可寻址轨道的数量越来越多。 频带数优选为2n，其中n为整数。 每个频带被分成多个旋转组，每组具有固定的转数。 乐队中的每个组都有相同数量的可寻址轨道。 所谓的锚定部分具有锚定在盘上的参考圆周位置的一端。 每个革命组织都以一个锚定部门开始，该组织中的所有其他部门都相对于锚定部分周向定位。 描述可寻址的寻轨，替代实施例和盘的制造。

公开(公告)号：US5418773A

公开(公告)日：1995-05-23

申请号：US86960

申请日：1993-07-02

申请人： Johannus L. Bakx ,  Paulus G. P. Weijenbergh ,  Karl A. Belser ,  Glen A. Jaquette ,  John E. Kulakowski ,  Judson A. McDowell ,  Rodney J. Means

发明人： Johannus L. Bakx ,  Paulus G. P. Weijenbergh ,  Karl A. Belser ,  Glen A. Jaquette ,  John E. Kulakowski ,  Judson A. McDowell ,  Rodney J. Means

IPC分类号： G11B7/007 ,  G11B11/105 ,  G11B19/02 ,  G11B20/12 ,  G11B21/08 ,  G11B27/30 ,  G11B7/00

CPC分类号： G11B19/02 ,  G11B11/10565 ,  G11B20/1258 ,  G11B21/083 ,  G11B27/3027 ,  G11B7/00745

摘要： A record carrier having essentially circular tracks concentrically located around a point of rotation. The record carrier is divided into circular zones each having m tracks, where m is an integer. Each track within a zone is subdivided into n sectors, where n is an integer which is constant per zone and which increases as the zone is more remote from the point of rotation. Each sector including a header portion and a data portion. The header portions in the radial direction in each zone are in line. In each zone the condition of m*n=j*k is satisfied, where is j an integer greater than or equal to 2 and is constant for each zone, and k is an integer.

摘要翻译： 具有基本圆形轨道的记录载体，同心地位于旋转点周围。 记录载体被分成圆形区域，每个区域具有m个轨道，其中m是整数。 区域内的每个轨道被细分为n个扇区，其中n是每个区域恒定的整数，并且随着该区域距离旋转点更远，该扇区增加。 每个扇区包括报头部分和数据部分。 每个区域中的径向的头部部分成直线。 在每个区域中，满足m * n = j * k的条件，其中j是大于或等于2的整数，并且对于每个区域是常数，并且k是整数。

公开(公告)号：US5233584A

公开(公告)日：1993-08-03

申请号：US577250

申请日：1990-09-04

申请人： John E. Kulakowski ,  Judson A. McDowell ,  Rodney J. Means

发明人： John E. Kulakowski ,  Judson A. McDowell ,  Rodney J. Means

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/0055 ,  G11B20/12 ,  G11B20/18 ,  G11B27/36

CPC分类号： G11B27/36 ,  G11B2020/183

摘要： Error control procedures are described for an optical disk recorder. High and low criteria for each of a plurality of machine operations or functions of an optical disk recorder are described. Such functions include erasing a sector, writing data, and reading data. Each function has two sub parts, reading a sector ID and performing the function in a data field. The high and low criteria for reading the sector ID and for performing the function in the data field, are different. The high and low criteria for a ROM portion of the optical disk are different from that provided for magnetooptic portion.

公开(公告)号：US5526329A

公开(公告)日：1996-06-11

申请号：US381617

申请日：1995-01-30

申请人： John E. Bish ,  David E. Call ,  Glen A. Jaquette ,  Judson A. McDowell ,  Arturo A. Mojica ,  Lawrence D. Tipton

发明人： John E. Bish ,  David E. Call ,  Glen A. Jaquette ,  Judson A. McDowell ,  Arturo A. Mojica ,  Lawrence D. Tipton

IPC分类号： G11B7/004 ,  G11B7/00

CPC分类号： G11B7/004

摘要： The present invention provides a method and an apparatus to accurately and consistently distinguish blank sectors from written sectors on optical media despite drive and media variations. A readback envelope threshold is established each time optical media is mounted into an optical drive. In one embodiment, the gain of readback amplifiers are set to a first level, the optical head seeks to and reads a sector or set of sectors on the optical disk known to have information recorded thereon and a first readback envelope generated. The gain of the readback preamplifier is then set to a second level, the optical head seeks to and reads another sector or set of sectors known to have information recorded thereon and a second readback envelope generated. The readback threshold is calculated from the amplitudes of the first and second envelopes. Once the threshold has been calculated for a disk, the drive can scan for a blank sector by comparing the amplitude of the sector's readback envelope with the threshold: if the amplitude is less than the threshold, and no other written format feature is readily indicated the sector can be classified as being blank and it is safe to write to the sector.

摘要翻译： 本发明提供了一种方法和装置，即使驱动器和介质变化，也可准确且一致地区分光学介质上的空白扇区与写入扇区。 每当将光学介质安装到光学驱动器中时，建立回读包络阈值。 在一个实施例中，回读放大器的增益被设置为第一电平，光头寻找并读取光盘上已知具有其上记录的信息的扇区或一组扇区，并产生第一回读包络。 然后将回读前置放大器的增益设置为第二电平，光头寻找并读取已知具有记录信息的另一个扇区或一组扇区，并产生第二个回读包络。 从第一和第二信封的振幅计算回读阈值。 一旦已经为磁盘计算了阈值，驱动器可以通过将扇区的回读包络的幅度与阈值进行比较来扫描空白扇区：如果幅度小于阈值，并且不容易指出其他写入格式特征 部门可以被分类为空白，并且可以安全地写入该部门。

公开(公告)号：US5430702A

公开(公告)日：1995-07-04

申请号：US197525

申请日：1994-02-16

申请人： John E. Bish ,  David E. Call ,  Glen A. Jaquette ,  Judson A. McDowell ,  Arturo A. Mojica ,  Lawrence D. Tipton

发明人： John E. Bish ,  David E. Call ,  Glen A. Jaquette ,  Judson A. McDowell ,  Arturo A. Mojica ,  Lawrence D. Tipton

IPC分类号： G11B7/004 ,  G11B7/00

CPC分类号： G11B7/004

摘要： The present invention provides a method and an apparatus to accurately and consistently distinguish blank sectors from written sectors on optical media despite drive and media variations. A readback envelope threshold is established each time optical media is mounted into an optical drive. In one embodiment, the gain of readback amplifiers are set to a first level, the optical head seeks to and reads a sector or set of sectors on the optical disk known to have information recorded thereon and a first readback envelope generated. The gain off the readback preamplifier is then set to a second level, the optical head seeks to and reads another sector or set of sectors known to have information recorded thereon and a second readback envelope generated. The readback threshold is calculated from the amplitudes of the first and second envelopes. Once the threshold has been calculated for a disk, the drive can scan for a blank sector by comparing the amplitude of the sector's readback envelope with the threshold: if the amplitude is less than the threshold and no other written format feature is readily indicated, the sector can be classified as being blank and it is safe to write to the sector.

摘要翻译： 本发明提供了一种方法和装置，即使驱动器和介质变化，也可准确且一致地区分光学介质上的空白扇区与写入扇区。 每当将光学介质安装到光学驱动器中时，建立回读包络阈值。 在一个实施例中，回读放大器的增益被设置为第一电平，光头寻找并读取光盘上已知具有其上记录的信息的扇区或一组扇区，并产生第一回读包络。 然后将回读前置放大器的增益设置为第二级，光头寻求并读取已知具有记录在其上的信息的另一扇区或一组扇区，并产生第二回读包络。 从第一和第二信封的振幅计算回读阈值。 一旦为磁盘计算了阈值，驱动器可以通过将扇区的回读包络的幅度与阈值进行比较来扫描空白扇区：如果幅度小于阈值，并且不容易指出其他写入格式特征， 部门可以被分类为空白，并且可以安全地写入该部门。

公开(公告)号：US5548572A

公开(公告)日：1996-08-20

申请号：US414825

申请日：1995-03-31

申请人： John E. Kulakowski ,  Judson A. McDowell ,  Kurt A. Rubin

发明人： John E. Kulakowski ,  Judson A. McDowell ,  Kurt A. Rubin

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/125 ,  G11B11/105 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/1267 ,  G11B11/10595 ,  G11B2220/20

摘要： The present invention provides efficient management of calibration and spare sectors on a banded optical write-once, read-many (WORM) disk. A portion of each band on the disk includes a user data area and a reserved area. Sectors in the reserved area are usable either as spare sectors, replacing defective sectors in the user area, or as calibration sectors, for use when the laser write-power level is calibrated. Sectors preferably are used for sparing from one end of the reserved area while sectors are used for calibration from the opposite end. A common overflow reserved area can also be provided for use if all of the sectors in one or more primary reserved areas associated with any of the bands have been exhausted.

摘要翻译： 本发明提供了有条件的光写一次读取（WORM）盘的校准和备用扇区的有效管理。 磁盘上的每个频带的一部分包括用户数据区和保留区。 保留区域中的扇区可用作备用扇区，替换用户区域中的有缺陷扇区，或用作校准扇区，用于校准激光写入功率电平时使用。 扇区优选地用于从保留区域的一端备用，而扇区用于从相对端进行校准。 如果与任何频带相关联的一个或多个主保留区域中的所有扇区已经被耗尽，则还可以提供公共溢出保留区域以供使用。

公开(公告)号：US4633333A

公开(公告)日：1986-12-30

申请号：US748377

申请日：1985-06-24

申请人： Alfred W. Blanco ,  Judson A. McDowell ,  David A. Yeary

发明人： Alfred W. Blanco ,  Judson A. McDowell ,  David A. Yeary

IPC分类号： G11B5/09 ,  G11B15/46 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36 ,  G11B27/22

CPC分类号： G11B20/10

摘要： With high density reel-to-reel tape drives, slight perturbations in the tape path can cause instantaneous speed variations in the tape which can alter the recording density of data on the tape over a very short interval. This condition can be detected by measuring changes in recording intervals on a plurality of data tracks. Whenever all of the tracks indicate an unacceptable change in the recording interval an unacceptable speed variation has been encountered.

摘要翻译： 使用高密度卷轴到卷轴磁带驱动器，磁带路径中的轻微扰动可能导致磁带中的瞬时速度变化，这可能在非常短的间隔内改变磁带上数据的记录密度。 可以通过测量多个数据轨道上的记录间隔的变化来检测该状况。 无论何时所有的轨道表示记录间隔的不可接受的变化，都遇到不可接受的速度变化。