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1. 发明授权

US4792898A Method and apparatus for temporarily storing multiple data records 失效
标题翻译：用于临时存储多个数据记录的方法和装置
公开(公告)号：US4792898A
公开(公告)日：1988-12-20
申请号：US912511
申请日：1986-09-26
申请人： Donald F. McCarthy , Bradley E. Whitney , Patricia G. Orban , Randy A. Fout , Leslie A. Magor
发明人： Donald F. McCarthy , Bradley E. Whitney , Patricia G. Orban , Randy A. Fout , Leslie A. Magor
IPC分类号： G06F11/10 , G06F12/08 , G06F7/00
CPC分类号： G06F11/1004 , G06F12/0866 , G06F11/1064
摘要： Method and apparatus for temporarily storing multiple data records in a data processing system which includes a host computer, a cache buffer subsystem, and a magnetic tape drive subsystem. A microprocessor, acting in part as a cache manager, directs the transfer of data into and out of a memory in the cache buffer subsystem by setting up a fill address register, a drain address register, and a start of record address register. Through utilization of a CRC byte to detect errors without correction, and a stop bit to locate the end of a record, values of the registers are compared dependent upon whether there is data being filled or drained to properly manage the temporary storage of data within the memory.
摘要翻译：一种用于在数据处理系统中临时存储多个数据记录的方法和装置，包括主计算机，高速缓冲存储器子系统和磁带驱动器子系统。作为高速缓存管理器部分地起作用的微处理器通过设置填充地址寄存器，漏极地址寄存器和记录地址寄存器的开始来指导数据进出高速缓冲存储器子系统中的存储器。通过使用CRC字节来检测错误而不进行校正，以及停止位来定位记录的结尾，根据是否有数据被填充或排出以正确地管理数据的临时存储，对寄存器的值进行比较记忆。

2. 发明授权

US4470082A Digital clocking and detection system for a digital storage system 失效
标题翻译：用于数字存储系统的数字时钟和检测系统
公开(公告)号：US4470082A
公开(公告)日：1984-09-04
申请号：US395605
申请日：1982-07-06
申请人： Richard W. Van Pelt , Donald F. McCarthy
发明人： Richard W. Van Pelt , Donald F. McCarthy
IPC分类号： G11B20/14 , G11B5/09 , H03L7/10
CPC分类号： G11B20/1403 , G11B20/1419 , G11B20/1423
摘要： A data clocking and detection system for a digital data storage system includes a common controlled oscillator for the multiple tracks. A phase detector for each track includes a counter and decoding circuitry producing outputs representing the time occurrence of transitions in the data with respect to bit cells defined by multiple clock pulses for each bit cell. Phase errors are used to control the frequency of the VCO, and large phase errors are used to add or subtract a count from the phase counter in each phase detector.
摘要翻译：用于数字数据存储系统的数据时钟和检测系统包括用于多个磁道的公共控制振荡器。用于每个轨道的相位检测器包括计数器和解码电路，产生表示相对于每个位单元由多个时钟脉冲定义的比特单元的数据中的转换的时间出现的输出。相位误差用于控制VCO的频率，并且使用大的相位误差来增加或减去每个相位检测器中的相位计数器的计数。

3. 发明授权

US5325370A Method and apparatus for recording data on magnetic tape media 失效
标题翻译：用于在磁带介质上记录数据的方法和装置
公开(公告)号：US5325370A
公开(公告)日：1994-06-28
申请号：US791791
申请日：1991-11-12
申请人： Brian G. Cleveland , William C. Dodt , Terry R. Gottehrer , Donald F. McCarthy , Charles A. Milligan
发明人： Brian G. Cleveland , William C. Dodt , Terry R. Gottehrer , Donald F. McCarthy , Charles A. Milligan
IPC分类号： G11B15/00 , G11B20/10 , G11B20/12 , G11B20/18 , G11B27/28 , G11B27/32 , G06F11/10
CPC分类号： G11B20/1883 , G11B15/005 , G11B20/10 , G11B20/1209 , G11B20/1833 , G11B20/1879 , G11B27/28 , G11B27/328 , G11B20/1211 , G11B2220/90
摘要： The control software and hardware in the tape drive control unit creates and manages a header segment at the beginning of the magnetic tape. This header is interposed between a leader portion of the magnetic tape on the 3480-type cartridge and the remainder of the magnetic tape contained therein. This header segment contains two sections, a first of which is a data record directory that is used by the control unit to denote the location of each data record written on to the magnetic tape as well as administrative information associated with the data record. The second section of the header is an administrative information section that contains data relating to the magnetic tape itself. The stream of data records is divided into data segments, a plurality of which comprise a single helical scan track. The helical scan tracks are formed into scan groups and written on the magnetic tape. At least one longitudinal track is written on the magnetic tape coextensive with the helical scan groups to provide data to enable the tape drive to quickly locate data records recorded on the magnetic tape.
摘要翻译：磁带驱动器控制单元中的控制软件和硬件在磁带开始处创建和管理标题段。该头部插入在3480型盒式磁带的磁带的引导部分和其中包含的其余磁带之间。该标题段包含两个部分，第一部分是数据记录目录，由控制单元用于表示写入磁带的每个数据记录的位置以及与数据记录相关联的管理信息。标题的第二部分是包含与磁带本身相关的数据的管理信息部分。数据记录流被分成多个数据段，其中多个数据段包括单个螺旋扫描轨道。螺旋扫描轨迹形成扫描组并写在磁带上。至少一个纵向磁道被写在与螺旋扫描组共同延伸的磁带上，以提供数据以使磁带机能够快速定位记录在磁带上的数据记录。

4. 发明授权

US5576903A Method and apparatus for administering data on magnetic tape medium by way of a header segment 失效
标题翻译：用于通过头部段在磁带介质上管理数据的方法和装置
公开(公告)号：US5576903A
公开(公告)日：1996-11-19
申请号：US266026
申请日：1994-06-27
申请人： Thomas M. Brown , William C. Dodt , Donald F. McCarthy , Richard Mendoza , Charles A. Milligan
发明人： Thomas M. Brown , William C. Dodt , Donald F. McCarthy , Richard Mendoza , Charles A. Milligan
IPC分类号： G06F3/06 , G11B15/087 , G11B15/68 , G11B20/12 , G11B20/18 , G11B27/00 , G11B27/30 , G11B27/32 , H03M13/29 , G11B5/09
CPC分类号： G06F3/0601 , G11B15/087 , G11B15/6835 , G11B20/1209 , G11B20/1833 , G11B20/1866 , G11B27/002 , G11B27/3027 , G11B27/322 , G11B27/323 , G11B27/328 , H03M13/29 , G06F2003/0698 , G11B2220/41 , G11B2220/90
摘要： The control software and hardware in the tape drive control unit creates and manages a header segment at the beginning of the magnetic tape. This header is interposed between a leader portion of the magnetic tape on the 3480-type cartridge and the remainder of the magnetic tape contained therein. This header segment contains two sections, a first of which is a data record directory that is used by the control unit to denote the location of each data record written on to the magnetic tape as well as administrative information associated with the data record. The second section of the header is an administrative information section that contains data relating to the magnetic tape itself. The administrative information includes the identification of the tape volume, the tape drive, write protect status of the magnetic tape, identification of the media, error record log and other information that enables the user, the host processor and the tape drive control unit to manage the data records written onto the magnetic tape without reference to any other sources of administrative data. In addition, the header itself can be self protected by computing an error correction code across the data contained within the header to enable the control unit to identify whether the header integrity has been compromised.
摘要翻译：磁带驱动器控制单元中的控制软件和硬件在磁带开始处创建和管理标题段。该头部插入在3480型盒式磁带的磁带的引导部分和其中包含的其余磁带之间。该标题段包含两个部分，第一部分是数据记录目录，由控制单元用于表示写入磁带的每个数据记录的位置以及与数据记录相关联的管理信息。标题的第二部分是包含与磁带本身相关的数据的管理信息部分。管理信息包括磁带卷的标识，磁带驱动器，磁带的写保护状态，介质的识别，错误记录日志以及使用户，主处理器和磁带驱动器控制单元能够管理的其他信息写入磁带的数据记录，而不参考任何其他行政数据来源。此外，通过在包含在报头内的数据之间计算纠错码，报头本身可以自我保护，以使得控制单元能够识别报头完整性是否已被破坏。

5. 发明授权

US5369641A Method and apparatus for detecting and correcting errors in data on magnetic tape media 失效
标题翻译：用于检测和纠正磁带介质上数据错误的方法和装置
公开(公告)号：US5369641A
公开(公告)日：1994-11-29
申请号：US791793
申请日：1991-11-12
申请人： William C. Dodt , Thomas G. Liehe , Donald F. McCarthy , Charles A. Milligan
发明人： William C. Dodt , Thomas G. Liehe , Donald F. McCarthy , Charles A. Milligan
IPC分类号： G06F3/06 , G11B15/087 , G11B15/68 , G11B20/12 , G11B20/18 , G11B27/00 , G11B27/30 , G11B27/32 , H03M13/29 , G06F11/00
CPC分类号： G06F3/0601 , G11B15/087 , G11B15/6835 , G11B20/1209 , G11B20/1833 , G11B20/1866 , G11B27/002 , G11B27/3027 , G11B27/322 , G11B27/323 , G11B27/328 , H03M13/29 , G06F2003/0698 , G11B2220/41 , G11B2220/90
摘要： The control software and hardware in the tape drive control unit creates and manages a multiple level error detection and correction system to protect the data written on the magnetic tape. The helical scan data write circuits operate on the received stream of data records to produce two orthogonal error detection and correction codes on a scan group level. The data write circuit divides the received stream of data records into data segments, each of which contains a predetermined number of data bytes. A first of these scan group error codes is generated on a per data segment basis while a second scan group error is generated across multiple data segments. A third level error correction code is also used to protect an entire scan group rather than data on a per byte basis. The third level error correction code generator produces an error code over a predetermined number of sequentially written scan groups to enable the control unit to reconstruct an entire scan group if its data integrity is compromised.
摘要翻译：磁带驱动器控制单元中的控制软件和硬件创建和管理多级错误检测和校正系统，以保护写在磁带上的数据。螺旋扫描数据写入电路对所接收的数据记录流进行操作，以在扫描组级上产生两个正交的检错和校正码。数据写入电路将接收到的数据记录流划分成数据段，每个数据段包含预定数量的数据字节。在每个数据段基础上生成第一个扫描组错误代码，同时跨多个数据段生成第二个扫描组错误。第三级纠错码也用于保护整个扫描组而不是每个字节的数据。第三级纠错码发生器在预定数量的顺序写入的扫描组上产生错误代码，以使控制单元重构整个扫描组，如果其数据完整性受到损害。

6. 发明授权

US5369532A Method and apparatus for managing data on rewritable media to define read/write operational status 失效
标题翻译：用于管理可重写介质上的数据以定义读/写操作状态的方法和装置
公开(公告)号：US5369532A
公开(公告)日：1994-11-29
申请号：US896106
申请日：1992-06-09
申请人： William C. Dodt , Jerry L. Donze , Terry R. Gottehrer , Ronald W. Korngiebel , Donald F. McCarthy
发明人： William C. Dodt , Jerry L. Donze , Terry R. Gottehrer , Ronald W. Korngiebel , Donald F. McCarthy
IPC分类号： G06F3/06 , G11B15/04 , G11B20/10 , G11B20/12 , G11B20/18 , G11B27/10 , G11B27/30 , G11B27/32 , G11B5/09 , G11B19/04
CPC分类号： G06F3/0601 , G11B15/04 , G11B20/10 , G11B20/1209 , G11B20/1833 , G11B20/1879 , G11B27/107 , G11B27/3027 , G11B27/32 , G11B27/322 , G11B27/323 , G11B27/328 , G06F2003/0698 , G11B20/1211 , G11B2220/90
摘要： Control software and hardware in the tape drive control unit creates and manages a header segment at the beginning of the magnetic tape. This header segment includes an administrative information section that contains data relating to the magnetic tape itself. The administrative information includes read/write status information such as the write protect status of the magnetic tape that enables the tape drive control unit to manage the data records written onto the magnetic tape without reference to any other source of administrative data. In addition, each data record written on the magnetic tape includes a header which denotes the read/write status of the data record.
摘要翻译：磁带驱动器控制单元中的控制软件和硬件在磁带开头创建并管理标题段。该标题段包括管理信息部分，该部分包含与磁带本身有关的数据。管理信息包括读/写状态信息，例如磁带的写保护状态，使得磁带驱动器控制单元能够管理写在磁带上的数据记录，而不参考任何其他管理数据源。此外，写在磁带上的每个数据记录包括表示数据记录的读/写状态的标题。

7. 发明授权

US5202809A Magnetic tape cartridge for helical scan transports with a single reel 失效
标题翻译：用于单卷筒螺旋扫描的磁带盒
公开(公告)号：US5202809A
公开(公告)日：1993-04-13
申请号：US699143
申请日：1991-05-13
申请人： William C. Dodt , Donald F. McCarthy
发明人： William C. Dodt , Donald F. McCarthy
IPC分类号： G11B15/61 , G11B15/665 , G11B15/67 , G11B23/107
CPC分类号： G11B23/107 , G11B15/61 , G11B15/67
摘要： This system makes use of a tape cassette helical scan tape transport and a modified 3480-type magnetic tape cartridge as the data storage media. The merging of these two incompatible elements is accomplished by the use of a novel interface that implements a "virtual tape cassette" by providing a takeup reel positioned with the magnetic tape cartridge in a relationship that substantially matches the format of a magnetic tape cassette. A short tape threading arm is used to retrieve the leader block from the tape cartridge and thread the magnetic tape over a short tape threading path to the takeup reel. Once the tape is affixed to the takeup reel, the helical scan tape loading mechanism transports the length of tape that is now exposed between the tape cartridge and the takeup reel to the rotary heads. The helical scan magnetic tape cartridge has the same exterior dimensions as a conventional 3480-type magnetic tape cartridge but is implemented in the inverse configuration. In particular, the magnetic tape is wound counterclockwise around the cartridge spindle, with the recording surface of the magnetic tape facing out and the magnetic tape exiting the left corner of the cartridge (when viewed from the top). In addition, the right front corner of the cartridge may be angled to further distinguish the helical scan magnetic tape cartridge from the conventional 3480-type magnetic tape cartridge.
摘要翻译：该系统利用带式磁带扫描带传输和改进的3480型磁带盒作为数据存储介质。这两个不兼容元件的合并通过使用通过提供与磁带盒定位的卷绕卷轴来实现“虚拟磁带盒”的新颖界面，其实质上与磁带盒的格式基本一致。使用短带穿线臂从带盒中取出引导块，并将磁带穿过卷绕卷轴的短带穿线路径。一旦胶带固定在收紧卷轴上，螺旋扫描带装载机构将现在在带盒和卷取卷轴之间暴露的带的长度传送到旋转头。螺旋扫描磁带盒具有与常规3480型磁带盒相同的外部尺寸，但是以相反的配置实现。特别地，磁带围绕盒主轴逆时针缠绕，磁带的记录表面朝外，磁带离开盒的左角（当从顶部观察时）。此外，盒的右前角可以成角度，以进一步区分螺旋扫描磁带盒与传统的3480型磁带盒。

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