公开(公告)号：US06603618B1

公开(公告)日：2003-08-05

申请号：US09193030

申请日：1998-11-16

申请人： Richard McAuliffe ,  Frederick G. Munro ,  Paul Newsome ,  Thomas E. Zaczek

发明人： Richard McAuliffe ,  Frederick G. Munro ,  Paul Newsome ,  Thomas E. Zaczek

IPC分类号： G11B509

CPC分类号： G11B15/05 ,  G11B15/06 ,  G11B15/14 ,  G11B15/1816 ,  G11B15/1875 ,  G11B15/4673 ,  G11B15/48 ,  G11B15/52 ,  G11B15/54 ,  G11B27/102 ,  G11B27/107 ,  G11B27/13 ,  G11B27/3027 ,  G11B2220/90

摘要： A method and system for monitoring and/or adjusting the positioning of a magnetic tape using central control packets that are recorded to the tape is presented. Central control packets are used for adjusting the timing of the read head signal over the tape, adapting the reel count to that of the drive at the time the tape was recorded, and monitoring filemarks for logical tape positioning.

摘要翻译： 提出了使用记录到磁带的中央控制分组来监视和/或调整磁带的定位的方法和系统。 中央控制包用于通过磁带调整读取磁头信号的定时，在磁带记录时将磁带盘数量调整到驱动器的数量，并监视逻辑磁带定位的文件标记。

公开(公告)号：US06367048B1

公开(公告)日：2002-04-02

申请号：US09192794

申请日：1998-11-16

申请人： Richard McAuliffe ,  Thomas E. Zaczek

发明人： Richard McAuliffe ,  Thomas E. Zaczek

IPC分类号： G11B2018

CPC分类号： G11B20/10 ,  G11B15/026 ,  G11B20/1833 ,  G11B27/107 ,  G11B27/3027 ,  G11B2220/90

摘要： A method for logically rejecting previously recorded track residue from magnetic media is presented. A session ID unique to a given recording session is encoded into track packet error check and error correction codes but is not itself actually written to tape. During a data recovery session, a reference session ID for the original recording session is acquired by reconstructing the packet session ID from the first few track packets and verifying that a predetermined number of consecutive track packets have identical packet session IDs. Once the reference packet session ID is acquired, it is preloaded into error detection and correction hardware. When a residue track encoded with a previously recorded session ID is recovered by the tape drive track packet detection circuitry, it is inherently rejected because the error detection and correction hardware detects an error and it is therefore never allowed into the data buffer.

摘要翻译： 提出了一种从磁介质中逻辑拒绝先前记录的磁道残留的方法。 给定记录会话特有的会话ID被编码成磁道分组错误检查和纠错码，但本身并不实际写入磁带。 在数据恢复会话期间，通过从前几个磁道分组重构分组会话ID并且验证预定数量的连续磁道分组具有相同的分组会话ID来获取原始记录会话的参考会话ID。 一旦获取了参考分组会话ID，就将其预加载到错误检测和校正硬件中。 当通过磁带驱动器磁道分组检测电路恢复用先前记录的会话ID编码的残余磁迹时，由于错误检测和校正硬件检测到错误并且因此从不允许进入数据缓冲器，所以本质上被拒绝。

公开(公告)号：US06367047B1

公开(公告)日：2002-04-02

申请号：US09176014

申请日：1998-10-20

申请人： Richard H. McAuliffe ,  Thomas E. Zaczek

发明人： Richard H. McAuliffe ,  Thomas E. Zaczek

IPC分类号： H03M1329

CPC分类号： G11B20/1833 ,  G11B2020/10759 ,  G11B2020/1843 ,  G11B2020/1853 ,  H03M13/09 ,  H03M13/1515 ,  H03M13/2909 ,  H03M13/2915 ,  H03M13/2918 ,  H03M13/2921 ,  H03M13/373

摘要： A multi-level error correction technique for maintaining data integrity in a data recording/recovery device is presented. Data is stored in buffer packets in a segment of a data buffer before being recorded to a storage medium. Error correction codes are generated over a plurality of instances of a plurality of buffer packet patterns in the segment, and are recorded along with all of the buffer packets onto a storage medium. During data recovery from the storage medium, recovered error correction code packets are used to perform multi-level segment correction on the recovered data packets.

摘要翻译： 提出了一种用于在数据记录/恢复设备中保持数据完整性的多级纠错技术。 在将数据记录到存储介质之前，将数据存储在数据缓冲器的段中的缓冲包中。 在片段中的多个缓冲器分组模式的多个实例上生成纠错码，并将其与所有缓冲器分组一起记录到存储介质上。 在从存储介质进行数据恢复期间，使用恢复的纠错码分组对恢复的数据分组进行多级段校正。

公开(公告)号：US06307701B1

公开(公告)日：2001-10-23

申请号：US09176079

申请日：1998-10-20

申请人： Kelly J. Beavers ,  Michael A. Blatchley ,  David L. Detro ,  Christopher J. Turner ,  Thomas E. Zaczek

发明人： Kelly J. Beavers ,  Michael A. Blatchley ,  David L. Detro ,  Christopher J. Turner ,  Thomas E. Zaczek

IPC分类号： G11B1546

CPC分类号： G11B5/0086 ,  G11B5/00878 ,  G11B15/04 ,  G11B15/06 ,  G11B15/093 ,  G11B15/1875 ,  G11B15/43 ,  G11B15/4673

摘要： A method and apparatus for varying track recording speed to maximize host-to-tape data transfer rates is presented. Variable data transfer rates of host systems and networks are accommodated by continually adjusting the tape speed to match the tape drive to the host's actual transfer rate. The speed of the tape is adjusted according to both the level of data present in the tape drive data buffer and whether the current mode of the drive is write mode or read mode. In the preferred embodiment, when the tape speed is accelerated or decelerated while writing a number of data track pairs to tape, a predetermined number of dummy track pairs are first written to tape at the current speed. On the next write head phase after the speed is increased or decreased as appropriate while the read heads are over the track, a predetermined number of dummy track pairs followed by more data track pairs are written to the tape at the new speed.

摘要翻译： 提出了一种改变磁道记录速度以最大化主机到磁带数据传输速率的方法和装置。 主机系统和网络的可变数据传输速率通过不断调整磁带速度来匹配磁带驱动器与主机的实际传输速率。 根据磁带驱动器数据缓冲器中存在的数据级别以及驱动器的当前模式是写入模式还是读取模式来调整磁带的速度。 在优选实施例中，当在将多个数据轨道对写入磁带的同时加速或减速磁带速度时，首先将预定数量的虚拟磁道对以当前速度写入磁带。 在读取磁头在磁道上方的速度增加或减小之后的下一个写入磁头相位上，预定数量的虚拟磁道对后跟更多的数据磁道对被以新的速度写入磁带。

公开(公告)号：US4327417A

公开(公告)日：1982-04-27

申请号：US157104

申请日：1980-06-06

申请人： Thomas E. Zaczek

发明人： Thomas E. Zaczek

IPC分类号： G01S7/40 ,  H01Q1/00 ,  H01Q25/00 ,  G06F15/20

CPC分类号： G01S7/4052 ,  H01Q1/00 ,  H01Q25/00 ,  G01S2007/4082

摘要： Disclosed is a means for synthesizing many different antenna patterns with different beamwidths and elliptical symmetries, being derived from a common data set corresponding to a planar cut or slice of an arbitrary antenna pattern which is stored in an addressable memory such as a programmable read only memory (PROM). A pattern surface or envelope is modeled by an algorithm which takes generated azimuth and elevation values simulating a desired scanning motion from which a memory address is produced according to a predetermined mathematical relationship including factors which determine the degree of ellipticity as well as the beamwidth relative to the stored planar cut of the arbitrary antenna pattern.

摘要翻译： 公开了一种用于合成具有不同波束宽度和椭圆对称性的许多不同天线图案的手段，该公共数据集对应于任意天线图案的平面切割或切片，其被存储在可寻址存储器中，例如可编程只读存储器 （舞会）。 模式表面或包络通过一种算法来建模，该算法产生模拟期望的扫描运动的方位角和仰角值，根据预定的数学关系，产生存储器地址，该预定的数学关系包括确定椭圆度以及相对于 所存储的平面切割任意天线图案。

公开(公告)号：US06459540B1

公开(公告)日：2002-10-01

申请号：US09946414

申请日：2001-09-04

申请人： Kelly J. Beavers ,  Michael A. Blatchley ,  David L. Detro ,  Christopher J. Turner ,  Thomas E. Zaczek

发明人： Kelly J. Beavers ,  Michael A. Blatchley ,  David L. Detro ,  Christopher J. Turner ,  Thomas E. Zaczek

IPC分类号： G11B1546

CPC分类号： G11B5/0086 ,  G11B5/00878 ,  G11B15/04 ,  G11B15/06 ,  G11B15/093 ,  G11B15/1875 ,  G11B15/43 ,  G11B15/4673

摘要： A method and apparatus for varying track recording speed to maximize host-to-tape data transfer rates is presented. Variable data transfer rates of host systems and networks are accommodated by continually adjusting the tape speed to match the tape drive to the host's actual transfer rate. The speed of the tape is adjusted according to both the level of data present in the tape drive data buffer and whether the current mode of the drive is write mode or read mode. In the preferred embodiment, when the tape speed is accelerated or decelerated while writing a number of data track pairs to tape, a predetermined number of dummy track pairs are first written to tape at the current speed. On the next write head phase after the speed is increased or decreased as appropriate while the read heads are over the track, a predetermined number of dummy track pairs followed by more data track pairs are written to the tape at the new speed.

摘要翻译： 提出了一种改变磁道记录速度以最大化主机到磁带数据传输速率的方法和装置。 主机系统和网络的可变数据传输速率通过不断调整磁带速度来匹配磁带驱动器与主机的实际传输速率。 根据磁带驱动器数据缓冲器中存在的数据级别以及驱动器的当前模式是写入模式还是读取模式来调整磁带的速度。 在优选实施例中，当在将多个数据轨道对写入磁带的同时加速或减速磁带速度时，首先将预定数量的虚拟磁道对以当前速度写入磁带。 在读取磁头在磁道上方的速度增加或减小之后的下一个写入磁头相位上，预定数量的虚拟磁道对后跟更多的数据磁道对被以新的速度写入磁带。

公开(公告)号：US06381706B1

公开(公告)日：2002-04-30

申请号：US09176015

申请日：1998-10-20

申请人： Thomas E. Zaczek

发明人： Thomas E. Zaczek

IPC分类号： G06F1100

CPC分类号： G11B20/1883 ,  G11B20/1833 ,  G11B20/1879 ,  G11B2220/90

摘要： A method for rewriting track packets that fail a check-after-write test onto a track of a storage medium is presented. Local packet address information is included in the track packet itself to allow track packets to be written to the storage medium in any addressing order. This allows a single packet to be rewritten along a later track among other track packets that are being recorded for the first time, thereby reducing rewrite track overhead and eliminating the requirement for a lengthy backhitching sequence.

摘要翻译： 提出了一种将写入后检验失败的跟踪数据包重写到存储介质的轨道上的方法。 本地分组地址信息被包括在轨道分组本身中，以允许以任何寻址顺序将跟踪分组写入存储介质。 这允许在第一次记录的其他轨道分组之间沿着稍后的轨道重写单个分组，从而减少重写轨迹开销并消除对冗长后退序列的需求。