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21. 发明授权

US5229891A Tracking control system using single frequency pilot signal 失效
标题翻译：跟踪控制系统采用单频导频信号
公开(公告)号：US5229891A
公开(公告)日：1993-07-20
申请号：US831632
申请日：1992-02-07
申请人： Katsuji Yoshimura , Koji Takahashi , Kenichi Nagasawa , Shinichi Yamashita , Motokazu Kashida , Mitsuhiro Otokawa
发明人： Katsuji Yoshimura , Koji Takahashi , Kenichi Nagasawa , Shinichi Yamashita , Motokazu Kashida , Mitsuhiro Otokawa
IPC分类号： G11B15/467 , G11B21/10
CPC分类号： G11B21/103 , G11B15/4678
摘要： In an apparatus for recording an information signal on a recording medium forming many parallel tracks on the medium and for reproducing the information signal from the medium, a tracking control system is arranged to record a pilot signal of a given frequency along with the information signal in the first of the many tracks; to have the pilot signal also recorded in second and third tracks adjoining the first track on both sides thereof but at pilot signal phases shifted from the pilot signal phase of the first track to equal degrees in the directions opposite to each other at parts of the second and third tracks aligned perpendicularly to the longitudinal direction of the first track; and, in reproducing the information signal, the position of the recording medium and that of a reproducing head relative to each other are controlled on the basis of the pilot signal of the given frequency reproduced by the reproducing head from the first track along with the information signal.
摘要翻译：在用于在介质上形成许多并行轨道的记录介质上记录信息信号并用于从介质再现信息信号的设备中，跟踪控制系统被布置成将信号信号与信息信号一起记录在一起第一个很多轨道; 使得导频信号也记录在与其两侧相邻的第一磁道的第二和第三磁道中，但是在第二磁道的一部分处的导频信号相位从第一磁道的导频信号相位相移到相等的方向和第三轨道，其垂直于第一轨道的纵向排列; 并且在再现信息信号时，基于由再现头从第一轨道再现的给定频率的导频信号与信息一起来控制记录介质和再现头相对于彼此的位置信号。

22. 发明授权

US5132807A Recording apparatus for recording main information with additional information 失效
标题翻译：用于用附加信息记录主要信息的记录装置
公开(公告)号：US5132807A
公开(公告)日：1992-07-21
申请号：US383791
申请日：1989-07-21
申请人： Hiroyuki Takimoto , Koji Takahashi , Mikihiro Fujimoto
发明人： Hiroyuki Takimoto , Koji Takahashi , Mikihiro Fujimoto
IPC分类号： G11B15/467 , G11B27/024 , G11B27/029 , G11B27/10 , G11B27/13 , G11B27/30 , G11B27/32 , H04N5/92 , H04N5/928 , H04N9/835
CPC分类号： G11B27/029 , G11B15/4678 , G11B27/107 , G11B27/3027 , G11B27/3036 , G11B27/3063 , G11B27/322 , G11B27/323 , H04N5/9206 , H04N5/928 , H04N9/8355 , G11B2220/216 , G11B2220/90 , G11B27/024 , G11B27/13 , Y10S358/906
摘要： An apparatus for recording main information signals in tracks formed on a recording medium, wherein the track is not only made up from the recording area for the main information signals, but also provided with a recording area for additional information signals, whereby digital additional information signals and analog additional information signals are recorded in frequency-multiplexed relation on the additional information signal recording area, thus forming an information signal recording apparatus.
摘要翻译：一种用于在形成在记录介质上的轨道中记录主信息信号的装置，其中，轨道不仅由主信息信号的记录区域构成，而且还具有用于附加信息信号的记录区域，由此数字附加信息信号并且模拟附加信息信号以频率复用关系记录在附加信息信号记录区上，从而形成信息信号记录装置。

23. 发明授权

US5079650A Information signal recording and reproducing apparatus with a mark signal and four kinds of pilot signals 失效
标题翻译：信号信号记录和再现装置与标记信号和四种类型的引信信号
公开(公告)号：US5079650A
公开(公告)日：1992-01-07
申请号：US589764
申请日：1990-09-27
申请人： Susumu Kozuki , Tatsuzo Ushiro , Toshiyuki Masui , Masahiro Takei , Kenichi Nagasawa
发明人： Susumu Kozuki , Tatsuzo Ushiro , Toshiyuki Masui , Masahiro Takei , Kenichi Nagasawa
IPC分类号： G11B5/008 , G11B5/592 , G11B15/087 , G11B15/12 , G11B15/18 , G11B15/467 , G11B20/12
CPC分类号： G11B15/4678 , G11B15/087 , G11B15/125 , G11B15/1875 , G11B15/467 , G11B20/1208 , G11B5/0086 , G11B5/5922
摘要： An information signal recording and reproducing apparatus, including a recording arrangement for recording information signals, the recording arrangement including at least one rotary head obliquely tracing a tape-shaped recording medium, the information signals including four kinds of pilot signals for tracking control which have frequency components different from each other a manually operable arrangement for producing a command to change a recording operation of the recording arrangement, a mark signal supplying arrangement for intermittently supplying a mark signal to the recording arrangement for a predetermined period in response to the command produced by the manually operable arrangement, the mark signal mainly having a predetermined frequency component which is distinguishable from frequency components of the four kinds of pilot signals, a reproducing arrangement for reproducing signals recorded on the recording medium, the reproducing arrangement including at least one rotary head obliquely tracing the recording arrangement, a separation arrangement for separating the mark signal from signal reproduced by the reproducing arrangement, the separation arrangement including a band-pass filter through which the predetermined frequency component is passed, and a control arrangement for controlling a reproducing operation of the reproducing arrangement in response to the mark signal separated by the separation arrangement.

24. 发明授权

US5055952A Automatic track finding (ATF) controller for digital audio tape recorder 失效
标题翻译：数字录音机自动追踪（ATF）控制器
公开(公告)号：US5055952A
公开(公告)日：1991-10-08
申请号：US424828
申请日：1989-10-20
申请人： Il-Young Noh
发明人： Il-Young Noh
IPC分类号： G11B5/55 , G11B15/467 , G11B21/10
CPC分类号： G11B15/4678 , G11B21/103 , G11B5/5508
摘要： The ATF controller is a system capable of producing an offset signal according to the level difference between two channels after digital conversion of pilot signal in ATF controller of DAT. The automatic track finding controller for digital audio tape recorder comprises: low-pass filter for detecting only the pilot signal by filtering a reproduced signal from a digital tape; band-pass filter for detecting synchronous signal of tracks A and B from said reproduced signal; analog/digital converter for converting output of said low-pass filter into digital pilot signals; controller detecting a level difference between the digital pilot signals as well as generating first to third control signals to control storage of components of the digital pilot signal and an offset value, after acknowledging a corresponding track by said synchronous signal; first register for storing a pilot crosstalk component of an adjacent track by the first control signal; second register for storing a pilot crosstalk component of another adjacent track by the second control signal; third register for storing the offset value developed according to a level difference between the digital pilot signals; an adder for compensation for ATF error by combining the outputs of said first to third registers; and tracking error-signal generator for controlling tracking by generating a PWM signal according to the output of the adder.
摘要翻译： ATF控制器是能够在DAT ATF控制器中导频信号数字转换后根据两个通道之间的电平差产生偏移信号的系统。用于数字音频磁带录像机的自动轨迹发现控制器包括：低通滤波器，用于仅通过对来自数字磁带的再现信号进行滤波来检测导频信号; 带通滤波器，用于从所述再现信号检测磁道A和B的同步信号; 模拟/数字转换器，用于将所述低通滤波器的输出转换成数字导频信号; 控制器在通过所述同步信号确认相应的轨道之后，检测数字导频信号之间的电平差，以及产生第一至第三控制信号以控制数字导频信号的分量的存储和偏移值; 第一寄存器，用于通过第一控制信号存储相邻轨道的导频串扰分量; 第二寄存器，用于通过第二控制信号存储另一相邻轨道的导频串扰分量; 第三寄存器，用于存储根据数字导频信号之间的电平差产生的偏移值; 一个加法器，用于通过组合所述第一至第三寄存器的输出来补偿ATF误差; 以及跟踪误差信号发生器，用于根据加法器的输出产生PWM信号来控制跟踪。

25. 发明授权

US5003413A Tracking control circuit of helical scanning magnetic tape apparatus 失效
标题翻译：螺旋扫描磁带设备跟踪控制电路
公开(公告)号：US5003413A
公开(公告)日：1991-03-26
申请号：US401229
申请日：1989-08-31
申请人： Hideto Miyazaki
发明人： Hideto Miyazaki
IPC分类号： G11B5/588 , G11B15/467
CPC分类号： G11B15/4678
摘要： In a digital audio magnetic tape reproducing apparatus of herical scanning using two magnetic heads, a first head reproduces a pilot signal of its own track and two pilot signals of both neighboring tracks of its own track by affection of crosstalk, then a difference value between the values of the reproduced signals of the two pilot signals is calculated and is applied to a tracking servo system as a tracking error signal, moreover, the difference value is controlled by a reproduced signals of a pilot signal reproduced by a second magnetic head in the previous reproducing period.

26. 发明授权

US4964000A Circuit for separating simultaneously reproduced PCM and ATF signals having at least partially overlapping frequency bands 失效
标题翻译：用于分离具有至少部分重叠频带的再现的PCM和ATF信号的电路
公开(公告)号：US4964000A
公开(公告)日：1990-10-16
申请号：US275413
申请日：1988-11-23
申请人： Keiji Kanota , Noboru Murabayashi
发明人： Keiji Kanota , Noboru Murabayashi
IPC分类号： G11B5/008 , G11B5/09 , G11B15/467 , G11B20/10 , H04N5/928 , H04N9/802
CPC分类号： G11B15/4678 , G11B5/0086 , G11B5/09 , H04N9/802
摘要： In an apparatus, such as, an 8-mm VTR, in which a pilot signal and a digital signal modulated by an information signal, and occupying frequency bands that overlap at least in part, are recorded together as an addition signal in a track on a recording medium; a D.C. component of the addition signal reproduced from the track is detected and compared, in a voltage comparator, with the level of the reproduced addition signal so as to provide the digital signal as an output of the comparator, and such output of the voltage comparator is subtracted from the reproduced addition signal so as to provide the pilot signal without error by reason of the digital signal. Further, the pilot signal and cross-talk from adjacent tracks obtained from the first-mentioned subtraction is, in turn, subtracted from the reproduced addition signal for obtaining the digital signal therefrom, and the D.C. component of the digital signal obtained from the second subtraction is detected and compared with the level of the digital signal obtained from the second substration for obtaining therefrom the digital signal with any errors therein due to the pilot signal and other cross-talk from adjacent tracks being suppressed.

27. 发明授权

US4897739A Multi-channel recording apparatus using a plurality of heads in turn 失效
标题翻译：依次使用多个头的多通道记录装置
公开(公告)号：US4897739A
公开(公告)日：1990-01-30
申请号：US34793
申请日：1987-04-03
申请人： Masahide Hasegawa , Mitsuhiro Otokawa , Hidetoshi Matsuoka , Noritsugu Hirata
发明人： Masahide Hasegawa , Mitsuhiro Otokawa , Hidetoshi Matsuoka , Noritsugu Hirata
IPC分类号： G11B5/008 , G11B15/087 , G11B15/18 , G11B15/467 , H04N5/91 , H04N5/919
CPC分类号： G11B5/00865 , G11B15/087 , G11B15/1875 , G11B15/4678 , H04N5/91 , H04N5/919
摘要： A multi-channel recording apparatus in which n rotary heads (n is 3 or higher integer) are arranged on the outer peripheral edge of a drum in evenly spaced relation, and a tape-shaped recording medium is trained round the drum over an angular range of at least 360.degree..times.(1-1/n), while recording (n-1) channels of a signal on the recording medium by using the (n-1) of the n heads which are simultaneously tracing on the medium.
摘要翻译：一种多通道记录装置，其中n个旋转头（n为3或更高整数）以均匀间隔的关系布置在滚筒的外周边缘上，并且带状记录介质围绕滚筒在角度范围至少360°×（1-1 / n），同时通过使用在介质上同时追踪的n个磁头的（n-1）在记录介质上记录（n-1）个信号。

28. 发明授权

US4785360A Recording and reproducing apparatus having tracking control responsive to erase head scanning 失效
标题翻译：具有响应于擦除头扫描的跟踪控制的记录和再现设备
公开(公告)号：US4785360A
公开(公告)日：1988-11-15
申请号：US914371
申请日：1986-10-02
申请人： Susumu Kozuki , Hiroyuki Takimoto , Mitsuhiro Otokawa , Hiroo Edakubo , Kenichi Nagasawa , Keiji Satoh
发明人： Susumu Kozuki , Hiroyuki Takimoto , Mitsuhiro Otokawa , Hiroo Edakubo , Kenichi Nagasawa , Keiji Satoh
IPC分类号： G11B15/467 , G11B21/10 , G11B15/087
CPC分类号： G11B15/4678 , G11B21/103
摘要： In an information signal recording and reproducing apparatus arranged to record in rotation pilot signals of a plurality of kinds having different frequencies, one in each of recording tracks along with an information signal on a recording medium and to reproduce the information signal from the recording medium, the relative positions of a rotary head which is reproducing the information signal and the recording medium are controlled by using the pilot signals reproduced by the rotary head and reference signals of a plurality of kinds which are of different frequencies corresponding respectively to the pilot signals of the plurality of kinds and are generated in rotation; and the generating sequence of these reference signals is changed by skipping a given number of reference signals according to signals reproduced by a rotary erase head during a reproducing operation.
摘要翻译：在信息信号记录和再现装置中，将具有不同频率的多种类型的导频信号旋转记录在信息记录和重放装置中，每个记录磁道中一个与记录介质上的信息信号一起，并从记录介质再现信息信号，通过使用由旋转磁头再现的导频信号和分别对应于分别对应的导频信号的频率的不同频率的参考信号来控制再现信息信号和记录介质的旋转磁头的相对位置多种，并旋转产生; 并且通过在再现操作期间根据由旋转擦除头重放的信号跳过给定数量的参考信号来改变这些参考信号的产生序列。

29. 发明授权

US4766507A Rotary head reproducer with means for detecting the direction of audio recording during searching 失效
标题翻译：旋转头再现器，具有用于在搜索期间检测音频记录方向的装置
公开(公告)号：US4766507A
公开(公告)日：1988-08-23
申请号：US823053
申请日：1986-01-27
申请人： Motokazu Kashida , Masahiro Takei , Kouji Takahashi , Kenichi Nagasawa
发明人： Motokazu Kashida , Masahiro Takei , Kouji Takahashi , Kenichi Nagasawa
IPC分类号： G11B15/00 , G11B15/467 , G11B20/10 , G11B27/10 , G11B27/22 , G11B27/30 , G11B27/19 , G11B5/09
CPC分类号： G11B20/10527 , G11B15/005 , G11B15/4678 , G11B27/107 , G11B27/22 , G11B27/3009 , G11B2020/10592 , G11B2220/90
摘要： An audio signal reproducing apparatus for reproducing audio signals from a tape-shaped recording medium on which the audio signals are recorded together with mark signals respectively showing the longitudinal positions of the audio signals along the medium is arranged to detect the moving direction of the medium taken in recording in response to an instruction given to detect one of the mark signals and to search out the mark signals by moving the medium in the direction determined according to the result of the detection.
摘要翻译：音频信号再现装置，用于从记录了音频信号的带状记录介质再现音频信号，并分别显示沿着介质的音频信号的纵向位置的标记信号，以检测所采用的介质的移动方向在响应于给出的用于检测标记信号之一的指令进行记录时，并且通过根据检测结果确定的方向移动介质来搜索标记信号。

30. 发明授权

US4669005A Reproducing apparatus 失效
标题翻译：再现装置
公开(公告)号：US4669005A
公开(公告)日：1987-05-26
申请号：US765331
申请日：1985-08-13
申请人： Nobutoshi Takayama , Kouji Takahashi
发明人： Nobutoshi Takayama , Kouji Takahashi
IPC分类号： G11B5/588 , G11B15/467 , G11B5/56
CPC分类号： G11B15/4678
摘要： An apparatus for reproducing information signals from a record bearing medium having the information signals recorded together with different pilot signals which are repeatedly recorded, one after another, in a plurality of recording tracks. The apparatus includes a reproducing device arranged to trace the recording tracks on the record bearing medium; a reference signal generating device for generating reference signals which have frequencies corresponding to the pilot signals; a detection signal generating device for generating a plurality of detection signals having different frequency components by using the pilot signals reproduced by the reproducing device and the reference signals; and a tracking error signal generating device for generating a tracking error signal by utilizing the different frequency components of the detection signals.
摘要翻译：一种用于从具有与在多个记录轨道中重复记录的不同导频信号一起记录的信息信号的记录载体介质再现信息信号的装置。该装置包括：再现装置，其被配置为跟踪记录载体介质上的记录轨道; 参考信号产生装置，用于产生具有与导频信号对应的频率的参考信号; 检测信号发生装置，用于通过使用由再现装置再现的导频信号和参考信号来产生具有不同频率分量的多个检测信号; 以及跟踪误差信号发生装置，用于通过利用检测信号的不同频率分量来产生跟踪误差信号。

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