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公开(公告)号：US08619384B1
公开(公告)日：2013-12-31
申请号：US13551667
申请日：2012-07-18
IPC分类号： G11B20/20
CPC分类号： G11B5/56 , G11B5/584 , G11B20/10388 , G11B20/1211 , G11B2020/1281 , G11B2220/956
摘要： A servo track has identical servo pattern frames including two pairs of parallel magnetic transitions, the transitions of each pair spaced apart an equal distance, the transitions of the first pair at an azimuth angle to the longitudinal axis of the tape, the transitions of the second pair at an opposite azimuth angle. A servo channel receives signals at first times corresponding to when a servo read head detects the first and second transitions of the first pair of parallel transitions of a servo pattern frame, and second times corresponding to when the servo read head detects the first and second transitions of the second pair of parallel transitions. The servo channel determines a relative lateral movement and velocity between the tape and the tape head based on the azimuth angle and the ratio of the difference of the first and the difference of the second times.
摘要翻译： 伺服轨道具有相同的伺服模式框架，其包括两对平行的磁性过渡，每对的过渡间隔相等的距离，第一对的过渡部分以与磁带的纵向轴线成一个方位角，第二个 对在相反的方位角。 伺服通道在伺服读取头检测到伺服模式帧的第一对并行转换的第一和第二转换的第一时间接收信号，第二次对应于当伺服读取头检测到第一和第二转换时 的第二对平行过渡。 伺服通道基于方位角和第一次与第二次的差的差的比率来确定带和磁带头之间的相对横向运动和速度。
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2.发明授权公开(公告)号：US08340501B2
公开(公告)日：2012-12-25
申请号：US12219250
申请日：2008-07-18
IPC分类号： H04N9/88
CPC分类号： H04N7/173 , G11B15/087 , G11B15/4731 , G11B15/52 , G11B20/1211 , G11B20/1813 , G11B27/005 , G11B27/032 , G11B27/3027 , G11B27/3036 , G11B27/3063 , G11B2220/90 , G11B2220/91 , H04B7/18523 , H04L12/64 , H04N5/775 , H04N7/106 , H04N7/1675 , H04N9/7921 , H04N9/8042 , H04N9/8233 , H04N9/877 , H04N21/4325 , H04N21/4334 , H04N2005/91321
摘要： A video signal input-output circuit and a recording-reproduction apparatus in which a digitally compressed video signal input in packet form can be recorded and reproduced efficiently and in stable fashion. In this apparatus, a clock reference is detected from a packet signal containing the clock reference and a digitally compressed video signal, a time stamp for a packet is generated using a clock signal in phase with the clock reference and added to the particular packet, and the packet signals with the time stamp added thereto are recorded closely to each other in a data storage element such as a magnetic recording medium. At playback, the packet interval is output by being restored to the original length on the basis of the time stamp added to the packet in store.
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公开(公告)号：US20100002335A1
公开(公告)日：2010-01-07
申请号：US12430653
申请日：2009-04-27
申请人： Matthew P. Dugas
发明人： Matthew P. Dugas
CPC分类号： G11B5/23 , G11B5/127 , G11B5/1276 , G11B5/193 , G11B5/232 , G11B5/235 , G11B5/29 , G11B5/295 , G11B5/3116 , G11B5/4893 , G11B5/584 , G11B20/1211 , G11B20/1217 , Y10T29/49055 , Y10T29/49057
摘要： A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.
摘要翻译： 通过从相对的铁素体块形成衬底来制造薄膜磁记录头，所述铁氧体块在它们之间具有陶瓷构件。 然后将该结构切成多个柱，其中每个柱具有铁素体/陶瓷组合。 每列表示完成的头中的单个通道。 然后切割一块陶瓷以匹配柱状结构，并将两个结合在一起。 然后将接合结构切割或研磨直到形成头部，其中陶瓷设置在每个通道之间。 然后将铁氧体背隙添加到每个通道，使磁通路径的磁阻最小化。 该薄膜在头部被图案化以优化各种通道配置。
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4.发明授权公开(公告)号：US07319808B2
公开(公告)日：2008-01-15
申请号：US10367730
申请日：2003-02-19
CPC分类号： H04N7/173 , G11B15/087 , G11B15/4731 , G11B15/52 , G11B20/1211 , G11B20/1813 , G11B27/005 , G11B27/032 , G11B27/3027 , G11B27/3036 , G11B27/3063 , G11B2220/90 , G11B2220/91 , H04B7/18523 , H04L12/64 , H04N5/775 , H04N7/106 , H04N7/1675 , H04N9/7921 , H04N9/8042 , H04N9/8233 , H04N9/877 , H04N21/4325 , H04N21/4334 , H04N2005/91321
摘要： A video signal input-output circuit and a recording-reproduction apparatus in which a digitally compressed video signal input in packet form can be recorded and reproduced efficiently and in stable fashion. In this apparatus, a clock reference is detected from a packet signal containing the clock reference and a digitally compressed video signal, a time stamp for a packet is generated using a clock signal in phase with the clock reference and added to the particular packet, and the packet signals with the time stamp added thereto are recorded closely to each other in a data storage element such as a magnetic recording medium. At playback, the packet interval is output by being restored to the original length on the basis of the time stamp added to the packet in store.
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公开(公告)号：US07274526B2
公开(公告)日：2007-09-25
申请号：US11184430
申请日：2005-07-19
CPC分类号： G11B20/1201 , G11B5/0086 , G11B20/1209 , G11B20/1211 , G11B2220/90 , G11B2220/913 , G11B2220/916
摘要： A tape drive apparatus has at least one rotary head for reading/writing a track. The track has a number of fragments and each fragment has an identifier. The tape drive apparatus has a position indicator apparatus for providing a signal that indicates a rotational position of the head. The combination of the signal and the identifier unequivocally identifies a fragment within the fragments of a track. This has the advantage that non-unique identifiers can be used for the fragments of a track.
摘要翻译： 磁带驱动装置具有用于读/写轨道的至少一个旋转头。 轨道具有多个片段，每个片段都有一个标识符。 带驱动装置具有用于提供指示头部的旋转位置的信号的位置指示器装置。 信号和标识符的组合明确地识别轨道的片段内的片段。 这具有非唯一标识符可用于轨道的片段的优点。
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公开(公告)号：US06665488B1
公开(公告)日：2003-12-16
申请号：US09439406
申请日：1999-11-11
申请人： Masayasu Kaneko , Shoji Nemoto
发明人： Masayasu Kaneko , Shoji Nemoto
IPC分类号： H04N591
CPC分类号： H04N9/7921 , G11B5/0086 , G11B15/026 , G11B15/125 , G11B15/1875 , G11B15/4731 , G11B20/10 , G11B20/1211 , G11B27/36 , G11B2220/91 , H04N9/83
摘要： A recording format discriminating apparatus for use on a video tape recorder capable of reproducing a signal recorded on a recording medium in a digital recording format or an analog recording format by one and same head rotary system or a plurality of head rotary systems dedicated to analog recording and digital recording respectively. The apparatus comprises: an amplifier, having a capability of automatically controlling a gain of a signal reproduced by one of the head rotary systems, for amplifying the signal to a predetermined level; a first band extracting circuit for extracting a particular narrow frequency band from the amplified signal; a first comparator and detector for detecting by amplification an output of the first band extracting circuit and comparing the detected output with a first reference value; a second comparator and detector for integrating and holding the comparison result output of the first comparator and detector and then comparing the integrated output with a second reference value; and a recording format discriminating circuit for discriminating the recording format of the signal recorded on the recording medium from the comparison result output of the second comparator and detector.
摘要翻译： 一种用于能够以数字记录格式或模拟记录格式记录在记录介质上的信号的磁带录像机使用的记录格式鉴别装置，该记录格式识别装置由同一个头旋转系统或专用于模拟记录的多个头旋转系统 和数字录像。 该装置包括：放大器，具有自动控制由头旋转系统之一再现的信号的增益的能力，用于将信号放大到预定水平; 第一频带提取电路，用于从放大的信号中提取特定的窄频带; 第一比较器和检测器，用于通过放大检测第一频带提取电路的输出并将检测到的输出与第一参考值进行比较; 第二比较器和检测器，用于积分并保持第一比较器和检测器的比较结果输出，然后将积分输出与第二参考值进行比较; 以及记录格式鉴别电路，用于从第二比较器和检测器的比较结果输出中鉴别记录在记录介质上的信号的记录格式。
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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
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。
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公开(公告)号：US5029022A
公开(公告)日：1991-07-02
申请号：US294077
申请日：1989-01-05
IPC分类号： G11B20/12 , G11B27/032 , G11B27/30 , G11B27/32
CPC分类号： G11B20/1209 , G11B27/032 , G11B27/3027 , G11B27/3063 , G11B27/309 , G11B27/328 , G11B20/1211 , G11B2220/216 , G11B2220/90 , G11B2220/913
摘要： A method is disclosed for effecting update-in-place of data that has been recorded on tape in oblique tracks using a helical-scan recording technique. The data to be updated is recorded in a block of M tracks lying between first and second continuum each at least of N tracks where N is the worst-case number of tracks required to achieve head/track alignment. The block of M tracks comprises a first series of at least N tracks, a second series of tracks containing the data, and a third series of at least P tracks. When updating the data, the block is rewritten as a whole in a single continuum with the first track of the block being written within a distance of P tracks from the last track of the first continuum.
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公开(公告)号：US4899232A
公开(公告)日：1990-02-06
申请号：US177624
申请日：1988-04-05
IPC分类号： G11B20/10 , G11B20/12 , G11B20/18 , G11B27/036 , G11B27/30
CPC分类号： G11B20/1809 , G11B20/10527 , G11B20/1209 , G11B27/036 , G11B27/3027 , G11B27/3063 , G11B20/1211 , G11B2220/216 , G11B2220/90 , G11B2220/913
摘要： An apparatus for recording and/or reproducing digital data information on a recording medium which has a recorder similar to a digital audio recorder (DAT) which records digital signals in a frame made up of two oblique tracks formed by rotary heads and a controller for dividing the digital data information at a predetermined frame portion and supplying the divided information to the recorder as a digital signal, wherein since the digital data information are divided at the predetermined frame portion, they are easily re-recorded.
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公开(公告)号：US4821128A
公开(公告)日：1989-04-11
申请号：US62867
申请日：1987-06-15
申请人： Yoshizumi Inazawa , Hisashi Asano
发明人： Yoshizumi Inazawa , Hisashi Asano
CPC分类号： G11B20/10527 , G11B20/1208 , G11B27/036 , G11B27/107 , G11B27/3027 , G11B27/3063 , G11B20/1211 , G11B2020/10546 , G11B2220/90 , G11B2220/913
摘要： An apparatus for recording and/or reproducing a control signal in which a start point from which a control signal such as a program start identifying signal is recorded in a sub-code area is set by the use of an address signal written in a PCM area so that the positional information of a recording medium can be exactly detected and thereby it is assured that the control signal can be recorded in a desired position.
摘要翻译： 一种用于记录和/或再现控制信号的装置，其中通过使用写入PCM区域中的地址信号来设置其中诸如节目开始识别信号的控制信号从其开始记录在子码区域中的起始点 从而可以精确地检测记录介质的位置信息，从而可以确保控制信号能够被记录在期望的位置。
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