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1. 发明授权

US5844739A Method and apparatus for recording and reproducing digital data 失效
标题翻译：用于记录和再现数字数据的方法和装置
公开(公告)号：US5844739A
公开(公告)日：1998-12-01
申请号：US854802
申请日：1997-05-12
申请人： Tetsuya Mizushima , Akira Iketani , Tatsuro Juri
发明人： Tetsuya Mizushima , Akira Iketani , Tatsuro Juri
IPC分类号： G11B20/12 , G11B27/30 , H04N5/7826 , H04N5/92 , H04N5/926 , H04N9/82 , G11B5/09
CPC分类号： G11B20/1209 , G11B20/1208 , G11B27/3027 , G11B27/3036 , G11B27/3063 , H04N5/9208 , H04N5/926 , H04N9/8244 , G11B2220/90 , H04N5/78263 , H04N5/9261
摘要： A digital data recording apparatus records digital data in tracks on a tape. Each track has a first signal area for storing track format information and a second signal area for storing a plurality of sync blocks. The apparatus includes a circuit for inserting, in the first signal area, regular TDS information indicating the track data structure of digital data, and a circuit for inserting, in the final sync block, backup TDS information having the same structure as the regular TDS information.
摘要翻译：数字数据记录装置将数字数据记录在磁带上的轨道中。每个轨道具有用于存储轨道格式信息的第一信号区域和用于存储多个同步块的第二信号区域。该装置包括用于在第一信号区域中插入指示数字数据的轨道数据结构的常规TDS信息的电路，以及用于在最终同步块中插入具有与常规TDS信息相同结构的备用TDS信息的电路。

2. 发明授权

US5617263A Method of and apparatus for recording data suitable for a digital recording in a multiplexed fashion 失效
标题翻译：以多路复用方式记录适合于数字记录的数据的方法和装置
公开(公告)号：US5617263A
公开(公告)日：1997-04-01
申请号：US548602
申请日：1995-10-26
申请人： Tetsuya Mizushima , Tatsuro Juri , Chiyoko Matsumi , Kazuo Kawakami
发明人： Tetsuya Mizushima , Tatsuro Juri , Chiyoko Matsumi , Kazuo Kawakami
IPC分类号： G11B20/10 , G11B15/18 , G11B20/12 , G11B20/18 , G11B27/032 , G11B27/036 , G11B27/30 , G11B5/09 , H04N5/76
CPC分类号： G11B15/1875 , G11B20/1803 , G11B27/036 , G11B27/3027 , G11B27/3063 , G11B27/032
摘要： An information data composed of a predetermined quantity converted from input data and an information data parity for use in detecting or correcting an error in the information data are formulated. An ID comprising information including position information indicative of a position of the information data relative to a recording medium, and an ID parity for use in detecting or correcting an error in the ID are formulated. Then, a sync pattern is formulated, followed by formulation of a sync block comprised of the sync pattern, the ID, the ID parity, the information data and the information data parity. A plurality of the sync blocks are connected together to provide a recording area. This recording area forms a track together with other recording areas. Three or more consecutive tracks forms a minimum editing unit with which recording or reproduction is carried out. Each minimum editing unit has a plurality of the sync blocks having the same information data, and the plural tracks forming each minimum editing unit includes at least one track other than those positioned on respective opposite sides of the minimum editing unit.
摘要翻译：制定由从输入数据转换的预定量和用于检测或纠正信息数据中的错误的信息数据奇偶校验构成的信息数据。制定包括指示信息数据相对于记录介质的位置的位置信息和用于检测或校正ID中的错误的ID奇偶校验的ID。然后，制定同步模式，随后制定由同步模式，ID，ID奇偶校验，信息数据和信息数据奇偶校验组成的同步块。多个同步块被连接在一起以提供记录区域。该记录区域与其他记录区域一起形成轨道。三个或更多个连续的轨道形成了进行记录或再现的最小编辑单元。每个最小编辑单元具有多个具有相同信息数据的同步块，并且形成每个最小编辑单元的多个轨道包括除位于最小编辑单元的相对相对侧之外的至少一个轨道。

3. 发明授权

US5655050A Apparatus and method for recording and reproducing digital signal in synchronization blocks 失效
标题翻译：用于在同步块中记录和再现数字信号的装置和方法
公开(公告)号：US5655050A
公开(公告)日：1997-08-05
申请号：US659623
申请日：1996-06-06
申请人： Yoshiki Yamamoto , Tetsuya Mizushima , Akira Iketani , Yasunori Kawakami , Chiyoko Matsumi
发明人： Yoshiki Yamamoto , Tetsuya Mizushima , Akira Iketani , Yasunori Kawakami , Chiyoko Matsumi
IPC分类号： G11B20/12 , G11B5/008 , G11B5/09 , G11B20/18 , G11B27/28 , G11B27/30 , H04N5/926 , H04N5/935 , H04N5/945 , H04N5/76
CPC分类号： G11B20/1208 , G11B27/3027 , H04N5/9261 , H04N5/935 , G11B20/1833 , G11B2220/90 , G11B5/0086 , G11B5/09 , H04N5/945
摘要： A digital signal recording apparatus for recording digital signal in synchronization blocks includes a generator for generating a synchronization pattern for indicating the beginning of each synchronization block, a generator for generating an ID data for indicating the sequence of the synchronization blocks, a generator for generating an ID parity for checking the ID data, a generator for generating additional information signal, which is a track width data, a generator for generating audio and video signals. Above data are applied to a pattern generator for generating track data comprising plural consecutive normal synchronization blocks immediately preceded by two mini-synchronization blocks and immediately followed by one mini-synchronization block. Each mini-synchronization block includes the synchrionization pattern, ID data, ID parity, and additional information signal. Each normal synchronization block includes the synchronization pattern, ID data, ID parity, and audio and video signal.
摘要翻译：用于在同步块中记录数字信号的数字信号记录装置包括用于产生用于指示每个同步块的开始的同步模式的发生器，用于产生用于指示同步块的序列的ID数据的发生器，用于生成用于检查ID数据的ID奇偶校验，用于产生作为轨道宽度数据的附加信息信号的发生器，用于产生音频和视频信号的发生器。上述数据被应用于模式发生器，用于产生包括紧接在两个小型同步块之前的多个连续正常同步块的跟踪数据，并且紧随其后的是一个小型同步块。每个小型同步块包括同步模式，ID数据，ID奇偶校验和附加信息信号。每个正常同步块包括同步模式，ID数据，ID奇偶校验以及音频和视频信号。

4. 发明授权

US5321557A Magnetic recording and reproducing apparatus having multiple magnetic heads 失效
标题翻译：具有多个磁头的磁记录和重放装置
公开(公告)号：US5321557A
公开(公告)日：1994-06-14
申请号：US715590
申请日：1991-06-14
申请人： Masafumi Shimotashiro , Takeshi Inoue , Hiroshi Okamoto , Masaru Higashionji , Tetsuya Mizushima , Tatsushi Bannai , Souichiro Fujioka
发明人： Masafumi Shimotashiro , Takeshi Inoue , Hiroshi Okamoto , Masaru Higashionji , Tetsuya Mizushima , Tatsushi Bannai , Souichiro Fujioka
IPC分类号： G11B5/008 , G11B5/09 , G11B15/467 , G11B20/18 , H04N5/926 , H04N5/93 , H04N5/931 , H04N5/78 , G11B5/035 , G11B5/584
CPC分类号： G11B5/09 , G11B15/4675 , G11B5/00865 , H04N5/93 , H04N5/931 , G11B20/18 , H04N5/926
摘要： A magnetic recording and reproducing apparatus for recording and reproducing a video digital signal suitable to a narrowed track pitch having two magnetic heads with the same azimuth angle arranged with an overlapped area to reproduce the same track, and a tracking servo executing phase control such that a center of a reproducing track is brought to a center of the overlapped area of the two magnetic heads. Reproduced signals of the two magnetic heads are compared so that the reproduced output of the magnetic head having a good on-track condition is always selected to improve a tracking margin without increasing crosstalk disturbance from adjacent track.
摘要翻译：一种磁记录和再现装置，用于记录和再现适合于具有两个磁头的视频数字信号的视频数字信号，该两个磁头具有以重叠区域布置的相同方位角，以再现相同的轨道;以及跟踪伺服执行相位控制，使得再现轨道的中心被带到两个磁头的重叠区域的中心。比较两个磁头的再现信号，使得始终选择具有良好导轨状态的磁头的再现输出，以提高跟踪余量，而不增加来自相邻轨道的串扰扰动。

5. 发明授权

US5313346A Tracking error detection system having at least two magnetic heads with opposite azimuths and circuitry for detecting tracking error by determining a phase difference of output signals from all circuits based on signals produced by the magnetic heads 失效
标题翻译：跟踪误差检测系统具有至少两个具有相反方位的磁头和电路，用于通过基于由磁头产生的信号确定来自所有电路的输出信号的相位差来检测跟踪误差
公开(公告)号：US5313346A
公开(公告)日：1994-05-17
申请号：US974356
申请日：1992-11-10
申请人： Masafumi Shimotashiro , Tetsuya Mizushima , Hiroshi Okamoto , Souichiro Fujioka
发明人： Masafumi Shimotashiro , Tetsuya Mizushima , Hiroshi Okamoto , Souichiro Fujioka
IPC分类号： G11B5/48 , G11B5/588 , G11B5/596 , G11B15/467 , G11B5/584 , G11B5/09
CPC分类号： G11B15/467 , G11B5/588 , G11B5/59605 , G11B5/4893
摘要： Disclosed is a tracking error detection system in a digital magnetic recording/reproducing apparatus for recording/reproducing a digital signal, in which a digital signal recorded by means of a magnetic head having an azimuth is reproduced to thereby produce a reproduction clock signal and the phase or period of the reproduction clock signal is measured to thereby detect a tracking error. Since the tracking error can be known every time the phase or period of the reproduction clock signal is measured, it is possible to detect the tracking error including the linearity of a recording track and it is possible to improve the accuracy in tracking error detection. Further, since no pilot signal or the like is frequency-multiplexed on a low frequency, the recording digital is not affected.
摘要翻译：公开了一种用于记录/再现数字信号的数字磁记录/再现装置中的跟踪误差检测系统，其中通过具有方位角的磁头记录的数字信号被再现，从而产生再现时钟信号，并且相位或者再现时钟信号的周期，从而检测跟踪误差。由于每次测量再现时钟信号的相位或周期都可以知道跟踪误差，因此可以检测包括记录磁道的线性的跟踪误差，并且可以提高跟踪误差检测的精度。此外，由于没有导频信号等在低频上被频率复用，所以记录数字不受影响。

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