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1. 发明授权

US5047866A Comb filter type luminance/chrominance signal separation circuit 失效
标题翻译：梳状滤波器类型亮度/色度信号分离电路
公开(公告)号：US5047866A
公开(公告)日：1991-09-10
申请号：US323841
申请日：1989-03-15
申请人： Katsuyuki Watanabe , Tomomitsu Kuroyanagi , Atsushi Yoshioka , Michio Masuda , Toshiro Aizawa
发明人： Katsuyuki Watanabe , Tomomitsu Kuroyanagi , Atsushi Yoshioka , Michio Masuda , Toshiro Aizawa
IPC分类号： H03H11/26 , H04N9/78 , H04N9/79 , H04N9/84 , H04N9/87
CPC分类号： H04N9/7908 , H04N9/79
摘要： A luminance and chrominance signal separation circuit for use in a video tape recorder wherein in the recording mode a three-line comb filter is made to be an adaptive type comb filter for separating a luminance signal from a chrominance signal and in the playback mode the comb filter is made to eliminate residual chrominance signal components in the luminance signal. Switching circuits are provided in the invention to permit the switching of the luminance and chrominance signal separation circuit between recording and playback modes and noise reduction is accomplished by a feedback line correlation circuit.
摘要翻译：一种用于录像机的亮度和色度信号分离电路，其中在记录模式下，三线梳状滤波器被制成自适应型梳状滤波器，用于将亮度信号与色度信号分离，并且在重放模式下，梳状滤波器用于消除亮度信号中的残余色度信号分量。在本发明中提供开关电路以允许在记录和重放模式之间切换亮度和色度信号分离电路，并且通过反馈线相关电路实现降噪。

2. 发明授权

US5936791A Helical scan data recording and playback method and apparatus wherein reference helical tracks preceding data recording area on magnetic tape are played back before recording or playback of target data 失效
标题翻译：螺旋扫描数据记录和再现方法及装置，其中在记录或回放目标数据之前，在磁带上的数据记录区前面的参考螺旋轨迹被重放
公开(公告)号：US5936791A
公开(公告)日：1999-08-10
申请号：US980205
申请日：1997-11-28
申请人： Toshiro Aizawa , Shigemitsu Higuchi
发明人： Toshiro Aizawa , Shigemitsu Higuchi
IPC分类号： G11B15/12 , G11B15/18 , G11B15/467 , G11B15/473 , G11B15/60 , G11B5/584
CPC分类号： G11B15/4672 , G11B15/125 , G11B15/1875 , G11B15/4677 , G11B15/4736 , G11B15/602 , G11B15/4675
摘要： A helical scan data recording and playback apparatus includes a tape driving motor which continuously transports a magnetic tape on which there are a data recording area and a plurality of reference helical tracks preceding the data recording area. The data recording area is for recording and playback of target data on and from data recording tracks in the data recording area. The reference helical tracks have a specific pattern prerecorded thereon in a predetermined area of the helical reference tracks, and a configuration of the helical reference tracks is similar to a configuration of the data recording tracks. The apparatus further includes a rotary head cylinder, at least one magnetic head, coupled to the rotary head cylinder, which scans tracks on the magnetic tape and plays back the specific pattern from the reference helical tracks on the magnetic tape before recording or playback of target data on or from the data recording tracks in the data recording area on the magnetic tape, and a servo circuit which controls the tape driving motor based on the specific pattern played back from the reference helical tracks.
摘要翻译：螺旋扫描数据记录和重放装置包括：带驱动马达，其连续地传送在数据记录区域之前有数据记录区域和多个参考螺旋轨道的磁带。数据记录区用于在数据记录区中从数据记录道记录和重放目标数据。参考螺旋轨道在螺旋参考轨道的预定区域中预先记录有特定图案，并且螺旋参考轨道的配置类似于数据记录轨道的配置。该装置还包括旋转磁头气缸，耦合到旋转磁头气缸的至少一个磁头，其在记录或回放目标之前扫描磁带上的轨迹并从磁带上的参考螺旋轨道回放特定图案在磁带上的数据记录区域中的数据记录轨道上的数据，以及基于从参考螺旋轨道回放的特定图案来控制磁带驱动电动机的伺服电路。

3. 发明授权

US5737146A Data recording and playback apparatus using a helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track 失效
标题翻译：数据记录和重放装置，使用具有磁头的螺旋扫描系统，用于记录和重放模式信号，用于跟踪螺旋轨道内的跟踪区域
公开(公告)号：US5737146A
公开(公告)日：1998-04-07
申请号：US542725
申请日：1995-10-13
申请人： Toshiro Aizawa , Shigemitsu Higuchi
发明人： Toshiro Aizawa , Shigemitsu Higuchi
IPC分类号： G11B15/12 , G11B15/18 , G11B15/467 , G11B15/473 , G11B15/60 , G11B5/584
CPC分类号： G11B15/4672 , G11B15/125 , G11B15/1875 , G11B15/4677 , G11B15/4736 , G11B15/602 , G11B15/4675
摘要： Recording areas for tracking on which specific servo patterns are recorded are provided preceding data tracks on which data is to be recorded on a recording tape scanned by a helical scan system. The data tracks and recording areas for tracking are recorded at different azimuths. At the time of a playback operation, etc., the specific patterns in the recording areas for tracking are played back by the helical scan system and tracking is performed by using the playback timing.
摘要翻译：在由螺旋扫描系统扫描的记录带上要在其上记录数据的数据轨道之前提供用于跟踪哪个特定伺服模式的记录区域。用于跟踪的数据轨道和记录区域以不同的方位记录。在播放操作等时，用于跟踪的记录区域中的特定图案由螺旋扫描系统重放，并且通过使用重放定时进行跟踪。

4. 发明授权

US5521769A Magnetic tape drive with displaceable head capable of a re-try operation 失效
标题翻译：具有可移位头的磁带驱动器，能够重试操作
公开(公告)号：US5521769A
公开(公告)日：1996-05-28
申请号：US136766
申请日：1993-10-15
申请人： Atsuo Suga , Shigemitsu Higuchi , Kouji Fujita , Toshiro Aizawa , Minoru Kosuge
发明人： Atsuo Suga , Shigemitsu Higuchi , Kouji Fujita , Toshiro Aizawa , Minoru Kosuge
IPC分类号： G11B5/588 , G11B15/18 , G11B15/467 , G11B20/18 , G11B21/04 , G11B5/584
CPC分类号： G11B5/588 , G11B15/1808 , G11B15/4673 , G11B20/18 , G11B2020/183
摘要： A magnetic tape drive in a helical scan system can shorten retry operation time. A data signal reproduced from magnetic tape through reproducing heads is supplied to a regenerative signal processing circuit. If an uncorrectable error is contained in the signal, the regenerative signal processing circuit outputs error information to a system controller. Then, the system controller sends a retry instruction to a movable head controller. When receiving the retry instruction, the movable head controller supplies movable head control signals to displacement elements which then displace the reproducing heads along a rotating shaft of a rotary drum for re-scanning an error occurrence data track. This retry operation is repeated until no error is detected. The magnetic tape is run at lower speed or is stopped as required during the repetitive retry operation.
摘要翻译：螺旋扫描系统中的磁带驱动器可以缩短重试操作时间。从磁带通过再现头再现的数据信号被提供给再生信号处理电路。如果信号中包含不可纠正的错误，则再生信号处理电路向系统控制器输出错误信息。然后，系统控制器向可动头控制器发送重试指令。当接收到重试指令时，可移动头控制器将可移动的头部控制信号提供给位移元件，该位移元件然后沿着旋转鼓的旋转轴移动再现头，用于重新扫描错误发生数据轨道。重复该重试，直到没有检测到错误。磁带以较低速度运行或在重复重试操作期间根据需要停止。

5. 发明授权

US5500775A Data recording and reproducing apparatus 失效
标题翻译：数据记录和再现装置
公开(公告)号：US5500775A
公开(公告)日：1996-03-19
申请号：US136641
申请日：1993-10-13
申请人： Kouji Fujita , Shigemitsu Higuchi , Toshiro Aizawa , Atsuo Suga , Minoru Kosuge
发明人： Kouji Fujita , Shigemitsu Higuchi , Toshiro Aizawa , Atsuo Suga , Minoru Kosuge
IPC分类号： G11B5/588 , G11B15/087 , G11B15/467 , G11B15/52 , G11B20/12 , G11B21/04
CPC分类号： G11B15/4675 , G11B15/087 , G11B15/52
摘要： A data recording and reproducing apparatus of a helical scanning system includes a unit for recording and reproducing an information signal in an oblique information track on a magnetic tape by a rotary magnetic head and a unit for recording and reproducing a control signal on the magnetic tape in a longitudinal direction thereof. Further, the data recording and reproducing apparatus includes a memory unit for storing a difference (X-value error information) between a predetermined X value and a distance (X value) between a record starting position of the information track and a recorded position of the control signal, a unit for recording X-value error information on the magnetic tape individually each time information is recorded, a unit for reproducing X-value error information on the magnetic tape, and a unit for shifting a reproduced phase of the control signal in accordance with the X-value error information.
摘要翻译：螺旋扫描系统的数据记录和再现装置包括用于通过旋转磁头在磁带上的倾斜信息轨道中记录和再现信息信号的单元，以及用于在磁带上记录和再现控制信号的单元其纵向方向。此外，数据记录和再现装置包括存储单元，用于存储预定X值与信息轨道的记录开始位置与记录位置之间的距离（X值）之间的差值（X值误差信息）控制信号，用于在记录每次时间信息时分别记录磁带上的X值误差信息的单元，用于再现磁带上的X值误差信息的单元，以及用于将控制信号的再现相位移位的单元根据X值错误信息。

6. 发明授权

US5617535A Recording and playbackk apparatus 失效
标题翻译：录音和播放设备
公开(公告)号：US5617535A
公开(公告)日：1997-04-01
申请号：US978729
申请日：1992-11-19
申请人： Toshiro Aizawa , Shigemitsu Higuchi , Hiromasa Fujii
发明人： Toshiro Aizawa , Shigemitsu Higuchi , Hiromasa Fujii
IPC分类号： G11B5/00 , G11B15/00 , G11B15/02 , G11B19/04 , G11B20/18 , G11B27/34 , G11B27/36 , G11B33/00 , G11B33/10 , H04N5/782 , G06F11/00
CPC分类号： G11B27/34 , G11B15/026 , G11B19/04 , G11B27/36 , H04N5/782
摘要： A recording and playback apparatus for recording and playing back onto and from a magnetic tape and utilizable with a memory card adapted to be mounted onto the apparatus. The memory card is adapted to at least one of store operational characteristics for the apparatus to enable automatic setting of the operational characteristics of the apparatus when mounted and, if the apparatus includes a self-diagnostic information unit, the memory card enables storage of at least self-diagnostic information generated upon occurrence of a trouble during operation of the apparatus. The stored self-diagnostic information enables analyzing of the cause of a cause of the trouble occurring during operation of the apparatus at a time subsequent to the occurrence and taking of countermeasures with respect thereto. If the memory card is not mounted or is in a nonwritable state, the apparatus is provided with a storage device for storing the self-diagnostic information. The memory card also enables storage of other information relating to the apparatus.
摘要翻译：一种记录和播放装置，用于在磁带上记录和播放并且可用于适于安装到设备上的存储卡。存储卡适于装置的存储操作特性中的至少一个，以便能够在安装时自动设置装置的操作特性，并且如果装置包括自诊断信息单元，则存储卡至少能够存储在设备操作期间发生故障时产生的自诊断信息。所存储的自诊断信息能够分析在发生和发生对策之后的时间期间设备操作期间发生故障的原因。如果存储卡未安装或处于不可写状态，则该设备设置有用于存储自诊断信息的存储设备。存储卡还能够存储与该装置有关的其它信息。

7. 发明授权

US5488520A Data recording and playback apparatus using helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track 失效
标题翻译：使用具有磁头的螺旋扫描系统的数据记录和重放装置用于记录和重放模式信号，用于跟踪螺旋轨道内的跟踪区域
公开(公告)号：US5488520A
公开(公告)日：1996-01-30
申请号：US70625
申请日：1993-06-02
申请人： Toshiro Aizawa , Shigemitsu Higuchi
发明人： Toshiro Aizawa , Shigemitsu Higuchi
IPC分类号： G11B15/12 , G11B15/18 , G11B15/467 , G11B15/473 , G11B15/60 , G11B5/584 , G11B5/58 , G11B15/14
CPC分类号： G11B15/4672 , G11B15/125 , G11B15/1875 , G11B15/4677 , G11B15/4736 , G11B15/602 , G11B15/4675
摘要： Recording areas for tracking on which specific servo patterns are recorded are provided preceding data tracks on which data is to be recorded on a recording tape scanned by a helical scan system. The data tracks and recording areas for tracking are recorded at different azimuths. At the time of a playback operation, etc., the specific patterns in the recording areas for tracking are played back by the helical scan system and tracking is performed by using the playback timing.
摘要翻译：在由螺旋扫描系统扫描的记录带上要在其上记录数据的数据轨道之前提供用于跟踪哪个特定伺服模式的记录区域。用于跟踪的数据轨道和记录区域以不同的方位记录。在播放操作等时，用于跟踪的记录区域中的特定图案由螺旋扫描系统重放，并且通过使用重放定时进行跟踪。

8. 发明授权

US5392163A Digital video signal reproducing apparatus with compression and expansion of playback time 失效
标题翻译：具有压缩和扩展播放时间的数字视频信号再现装置
公开(公告)号：US5392163A
公开(公告)日：1995-02-21
申请号：US161455
申请日：1993-12-06
申请人： Shigemitsu Higuchi , Atsuo Suga , Yuji Inaba , Toshiro Aizawa
发明人： Shigemitsu Higuchi , Atsuo Suga , Yuji Inaba , Toshiro Aizawa
IPC分类号： G11B15/43 , G11B15/467 , G11B20/00 , G11B20/10 , H04N5/783 , H04N5/919 , H04N5/92 , H04N5/926 , H04N9/802 , H04N5/78
CPC分类号： H04N5/926 , G11B15/43 , G11B15/4671 , G11B20/00007 , H04N5/783 , H04N5/919 , H04N9/802
摘要： For the purpose of data compression and expansion in the playback mode reproducing data including video data and audio data recorded on a magnetic tape, a relative speed signal is generated from a circuit on the basis of the moving speed of the magnetic tape and the rotation speed of a head drum, and the characteristic of the recorded data is controlled according to this relative speed signal. The tension of the magnetic tape is detected by a circuit, and the phase difference between the detected tape tension signal and a reel rotation speed command signal is detected by a circuit so as to control the tape tension according to the detected phase difference. When a target value of the drum rotation speed is changed, a drum drive signal is changed stepwise at a predetermined time interval, and the amount of delay of a drum rotation reference signal delayed according to a signal indicative of the rotation speed of a capstan is changed, so as to determine the range in which both the capstan rotation speed and the drum rotation speed can be changed. Interfaces are disposed between a system controller and a pitch controller so as to control the tone pitch of the audio signal according to the capstan rotation speed signal.
摘要翻译：为了在重放模式下进行数据压缩和扩展，再现包括记录在磁带上的视频数据和音频数据的数据，基于磁带的移动速度和转速，从电路产生相对速度信号并且根据该相对速度信号控制记录数据的特性。通过电路检测磁带的张力，通过电路检测检测到的带张力信号和卷轴转速指令信号之间的相位差，以根据检测到的相位差来控制带张力。当滚筒旋转速度的目标值改变时，滚筒驱动信号以预定的时间间隔逐步改变，并且根据表示主导体的转速的信号而延迟的滚筒旋转基准信号的延迟量是改变，以便确定可以改变主导轮转速和转鼓旋转速度的范围。接口设置在系统控制器和俯仰控制器之间，以便根据主导轴转速信号来控制音频信号的音调。

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