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公开(公告)号：US4105213A
公开(公告)日：1978-08-08
申请号：US729669
申请日：1976-10-05
CPC分类号： G11B3/44 , B23B27/148 , G11B3/00
摘要： A stylus for cutting a sound groove on a disc recording medium comprises a diamond body having a groove cutting part, for producing a chip cut from the disc recording medium. The stylus also includes a structure made of a material which does not readily generate static electricity when the chip is in sliding contact therewith. The non static electricity generating material is at a position on the cutting stylus body which is contacted by the chip.
摘要翻译： 用于在盘记录介质上切割声槽的触针包括具有凹槽切割部分的金刚石体，用于从盘记录介质产生切屑。 触针还包括由芯片与其滑动接触时不容易产生静电的材料制成的结构。 非静电发生材料位于与芯片接触的切削针体上的位置。
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2.发明授权
公开(公告)号：US4527207A
公开(公告)日：1985-07-02
申请号：US522697
申请日：1983-08-12
申请人： Isao Owaki , Susumu Saito , Yasuhiko Fujii , Shinji Nakamura
发明人： Isao Owaki , Susumu Saito , Yasuhiko Fujii , Shinji Nakamura
摘要： A digital signal having a configuration of blocks or frames is recorded via a multi-track record on a first group of tracks, such as odd tracks, of a master tape which is driven at a first direction. Then when recording another digital signal by forming a second group of tracks, such as even tracks, in a second direction which is opposite to the first direction, the digital signal prerecorded on the first group of tracks is derived to produce a speed signal indicative of the tape speed at which the digital signal was recorded on the first group. The speed signal is then compared with a reference signal having a predetermined frequency for producing a control signal, which is used to control the driving speed of the master tape. Thus the second group of tracks is formed with the running speed of the master tape being controlled. As a result, the phase difference between the first and second groups of tracks is constant throughout the entire length of the master tape. The speed signal may be derived from a synchronous signal recorded on a control track, which may be formed when forming the first group of tracks.
摘要翻译： 具有块或帧的配置的数字信号经由多轨迹记录在第一组轨道上，例如在第一方向上被驱动的主磁带，例如奇数轨道。 然后当通过在与第一方向相反的第二方向上形成诸如偶数轨道的第二组轨道来记录另一个数字信号时，导出预先记录在第一组轨道上的数字信号，以产生指示 在第一组记录数字信号的磁带速度。 然后将速度信号与具有预定频率的参考信号进行比较，以产生用于控制主磁带的驱动速度的控制信号。 因此，第二组磁道是由主磁带的运行速度进行控制而形成的。 结果，第一和第二组磁道之间的相位差在母带的整个长度上是恒定的。 速度信号可以从记录在控制轨道上的同步信号导出，其可以在形成第一组轨道时形成。
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公开(公告)号：US4551840A
公开(公告)日：1985-11-05
申请号：US452971
申请日：1982-12-27
申请人： Yasuhiko Fujii , Isao Owaki , Susumu Saito , Takaro Mori , Shinji Nakamura
发明人： Yasuhiko Fujii , Isao Owaki , Susumu Saito , Takaro Mori , Shinji Nakamura
CPC分类号： G11B5/02 , G11B20/1813 , G11B5/86 , H03M13/15
摘要： A data recording and reproducing apparatus promotes error-free and speedy exchange of data between separate recording media. When desired primary data is to be recorded on a master recording medium, secondary data is added to the primary data in order to detect and correct data errors. The primary and secondary data are recorded on the master recording medium in a plurality of series which differ in recording sequence from each other. The primary data is reproduced from the master recording medium together with the secondary data for the different series at the same time, regardless of their recording sequences. The reproduced primary data is allowed for error check and correction based on the secondary data and is recorded in the slave recording medium.
摘要翻译： 数据记录和再现装置促进在分离的记录介质之间的无错误和快速的数据交换。 当需要主数据被记录在主记录介质上时，辅助数据被添加到主数据中以便检测和纠正数据错误。 主数据和次数据以记录顺序彼此不同的多个系列记录在主记录介质上。 无论其记录顺序如何，主数据与主记录介质一起以及不同系列的次要数据同时再现。 再生的主数据被允许基于次要数据进行错误校验和校正，并被记录在从属记录介质中。
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公开(公告)号：US4591927A
公开(公告)日：1986-05-27
申请号：US558152
申请日：1983-12-05
申请人： Isao Owaki , Susumu Saito
发明人： Isao Owaki , Susumu Saito
CPC分类号： G11B5/00817 , G11B20/10527 , G11B5/035 , G11B5/09
摘要： A magnetic tape is simultaneously recorded with digital signals on one or a plurality of forward recording tracks and reverse recording tracks thereon as the tape travels in a predetermined direction. The digital signals are reproduced from the forward recording tracks when the tape travels in a direction from one end to another end thereof, and the digital signals are reproduced from the reverse recording tracks when the tape travels in a direction from the other end to the one end thereof. The digital signals are recorded with the phase of the digital signals which are recorded on the forward or reverse recording tracks, relatively advanced with respect to the phase of the digital signals which are recorded on the reverse or forward recording tracks, so that solitary reproduced waveforms which are reproduced from the forward and reverse recording tracks respectively have substantially the same assymmetry of zeros or the same symmetry of zeros. The first recording tracks are scanned upon reproduction in a direction opposite to the predetermined direction in which the tape traveled upon recording, and the second recording tracks are scanned upon reproduction in a direction which is the same as the predetermined direction in which the tape traveled upon recording.
摘要翻译： 当磁带沿预定方向行进时，磁带同时记录有一个或多个正向记录磁道上的数字信号和反向记录磁道。 当磁带从一端到另一端的方向行进时，数字信号从正向记录磁道再现，并且当磁带从另一端向另一端的方向行进时，数字信号从反向记录磁道再现 结束。 数字信号以记录在正向或反向记录磁道上的数字信号的相位记录，相对于记录在反向或正向记录磁道上的数字信号的相位相对较高，使得单独的再现波形 从正向和反向记录轨道再现的信号分别具有与零的基本相同的不对称性或相同的零对称性。 第一记录轨道在与记录带移动的预定方向相反的方向上被再现时被扫描，并且第二记录轨道沿着与磁带行进的预定方向相同的方向被再现时被扫描 记录。
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公开(公告)号：US4533964A
公开(公告)日：1985-08-06
申请号：US432384
申请日：1982-09-30
申请人： Isao Owaki , Susumu Saito , Masami Yamazaki
发明人： Isao Owaki , Susumu Saito , Masami Yamazaki
CPC分类号： G11B20/1809
摘要： A digital signal of data and synchronization words is distributed to a plurality of circuit paths and transformed into non-return-to-zero inverted (NRZI) signals for application to a plurality of stationary parallel magnetic heads for recording the distributed NRZI signals along first parallel tracks on a magnetic tape when driven toward one end thereof and along second parallel tracks interleaved with the first tracks when the tape is driven toward the other end thereof. Each of the transducers has a differential characteristic with which the recorded signal is detected as a ternary signal, the detected signal is converted to a binary signal to recover the original digital signal. The synchronization word is detected from the recovered digital signal to generate a timing signal indicative of the position of each binary digit of the data word with respect to the detected synchronization word. In response to the timing control signal the timing of each binary digit derived from each transducer is aligned with those derived from the other transducers and arranged into a series of successive data words for conversion to an analog signal.
摘要翻译： 数据和同步字的数字信号被分配到多个电路路径并被转换成非归零反转（NRZI）信号，以应用于多个固定并行磁头，用于沿第一并行记录分布式NRZI信号 当磁带朝向其另一端被驱动时，磁带上的磁道沿着其一端被驱动时沿着与第一磁道交错的第二平行轨道移动。 每个换能器具有将记录信号作为三进制信号检测的差分特性，将检测到的信号转换为二进制信号以恢复原始数字信号。 从恢复的数字信号中检测同步字，以产生指示相对于检测到的同步字的数据字的每个二进制数位置的定时信号。 响应于定时控制信号，从每个换能器导出的每个二进制数字的定时与从其他换能器导出的二进制数的定时对准，并且被布置成一系列连续的数据字以转换为模拟信号。
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