公开(公告)号：US5594602A

公开(公告)日：1997-01-14

申请号：US286201

申请日：1994-08-05

申请人： Haruo Isaka ,  Toshihiko Maruoka ,  Kei Ichikawa ,  Kenichi Honjo ,  Makoto Gotou

发明人： Haruo Isaka ,  Toshihiko Maruoka ,  Kei Ichikawa ,  Kenichi Honjo ,  Makoto Gotou

IPC分类号： G11B5/588 ,  G11B15/46 ,  G11B15/467 ,  G11B15/473 ,  G11B5/584 ,  G11B5/58

CPC分类号： G11B15/463 ,  G11B15/4672 ,  G11B15/4678 ,  G11B15/4738 ,  G11B5/588

摘要： A tracking error detecting circuit is used in a magnetic reproducing apparatus for reproducing an information signal from tracks which are formed on a magnetic tape obliquely in a longitudinal direction of the magnetic tape. The tracks have selectively recorded thereon a pilot signal multiplexed with the information signal. The tracking error detecting circuit comprises: a rotating magnetic head scanning the tracks for reproducing the information signal on which the pilot signal is selectively multiplexed to obtain a reproduced signal; a comparator for comparing a level of the reproduced signal with a specified level and for issuing a binary signal representing a comparison result; and a level detecting circuit for detecting a level of the pilot signal contained in the reproduced signal from an output of the comparator.

摘要翻译： 在磁再现装置中使用跟踪误差检测电路，用于从在磁带的纵向上倾斜地形成在磁带上的磁道中再现信息信号。 磁道选择性地记录有与信息信号复用的导频信号。 跟踪误差检测电路包括：旋转磁头扫描磁道，用于再现其上选择性地复用导频信号的信息信号，以获得再现信号; 比较器，用于将再现信号的电平与指定电平进行比较，并用于发出表示比较结果的二进制信号; 以及电平检测电路，用于从比较器的输出中检测包含在再现信号中的导频信号的电平。

公开(公告)号：US5754356A

公开(公告)日：1998-05-19

申请号：US612816

申请日：1996-03-22

申请人： Kenichi Honjo ,  Toshihiko Maruoka ,  Haruo Isaka ,  Makoto Gotou ,  Kei Ichikawa ,  Kiyokazu Hashimoto ,  Masafumi Shimotashiro

发明人： Kenichi Honjo ,  Toshihiko Maruoka ,  Haruo Isaka ,  Makoto Gotou ,  Kei Ichikawa ,  Kiyokazu Hashimoto ,  Masafumi Shimotashiro

IPC分类号： G11B15/087 ,  G11B15/18 ,  G11B15/467 ,  G11B5/02 ,  G11B27/10

CPC分类号： G11B15/1875 ,  G11B15/4678

摘要： A magnetic recording and reproducing apparatus includes: a recorder for recording information signals so as to form tracks obliquely on a magnetic tape, and for recording pilot signals so that the frequency may differ between different modes such as SP and LP; a reproducing head for reproducing recorded information; an error detecting circuit for comparing the level difference of pilot signals recorded in both tracks adjacent to the track to be scanned by there producing head and for outputting a tracking error signal; and a controller for controlling the feed of the magnetic tape so that the tracking error signal may be balanced. Preferably, in the LP mode, a pilot signal of a higher frequency than that used in the SP mode is recorded. In a tracking error detector for a magnetic recording and reproducing apparatus for detecting the pilot signal, the reproduced signals are sampled at a frequency at a common multiple of each pilot frequency, a pilot signal is detected, and a tracking error signal is output.

摘要翻译： 一种磁记录和再现装置，包括：用于记录信息信号以便在磁带上倾斜地形成轨道并用于记录导频信号的记录器，使得频率在诸如SP和LP的不同模式之间可能不同; 用于再现记录信息的再现头; 误差检测电路，用于比较由所述制造头在与要扫描的轨道相邻的两个轨道中记录的导频信号的电平差，并输出跟踪误差信号; 以及控制器，用于控制磁带的馈送，使得跟踪误差信号可以被平衡。 优选地，在LP模式中，记录频率高于SP模式中使用的频率的导频信号。 在用于检测导频信号的磁记录和再现装置的跟踪误差检测器中，以每个导频的公倍数的频率对再生信号进行采样，检测导频信号，并输出跟踪误差信号。

公开(公告)号：US5371604A

公开(公告)日：1994-12-06

申请号：US69525

申请日：1993-06-01

申请人： Makoto Gotou ,  Yoshio Sakakibara ,  Akihiko Nakamura ,  Kei Ichikawa ,  Haruo Isaka ,  Kenichi Honjo

发明人： Makoto Gotou ,  Yoshio Sakakibara ,  Akihiko Nakamura ,  Kei Ichikawa ,  Haruo Isaka ,  Kenichi Honjo

IPC分类号： G11B5/588 ,  G11B15/12 ,  G11B15/467 ,  G11B20/10 ,  G11B27/032 ,  G11B27/036 ,  H04N5/7826 ,  H04N5/91 ,  H04N5/92 ,  H04N5/76

CPC分类号： G11B27/032 ,  G11B15/125 ,  G11B15/4678 ,  G11B27/036 ,  G11B2220/90

摘要： In an apparatus for multi-segment recording/reproducing of a compressed digital video signal, a reproduced position within a group unit of the video signal is detected by a reproduced position detector in its reproducing state. A relative position detector detects and stores a phase difference of the reproduced position and a position indicated by a reference signal synchronized with the input video signal. A delay time adjuster adjusts a delay time of the compressed video signal according to this phase difference. A head is changed over from its reproducing state to its recording state by a switch so as to record the compressed video signal delayed by the delay time adjuster on a recording medium.

摘要翻译： 在用于压缩数字视频信号的多段记录/再现的装置中，视频信号的组单元内的再现位置在其再现状态下被再现位置检测器检测。 相对位置检测器检测并存储再现位置的相位差和由与输入视频信号同步的参考信号所指示的位置。 延迟时间调节器根据该相位差来调节压缩视频信号的延迟时间。 通过开关将头从其再现状态切换到其记录状态，以将由延迟时间调节器延迟的压缩视频信号记录在记录介质上。

公开(公告)号：US5258879A

公开(公告)日：1993-11-02

申请号：US832711

申请日：1992-02-07

申请人： Masafumi Shimotashiro ,  Kiyokazu Hashimoto ,  Makoto Gotou ,  Haruo Isaka ,  Kei Ichikawa ,  Kenichi Honjo ,  Akihiro Takeuchi ,  Yoshio Sakakibara

发明人： Masafumi Shimotashiro ,  Kiyokazu Hashimoto ,  Makoto Gotou ,  Haruo Isaka ,  Kei Ichikawa ,  Kenichi Honjo ,  Akihiro Takeuchi ,  Yoshio Sakakibara

IPC分类号： G11B5/592 ,  G11B5/584

CPC分类号： G11B5/5922

摘要： A tracking error detecting circuit in which tracking error detecting pilot signals having different frequencies are added to a main signal every track and recorded onto a magnetic recording medium, and upon reproduction, reproduction output levels of the pilot signals reproduced as crosstalks from both of adjacent tracks are compared, and a tracking error is detected. n signals having the same frequencies as those of the pilot signals and whose phases are different are generated and multiplied to the reproduction signal. Unnecessary components are eliminated by n LPFs (Lowpass filters). The amplitude values of the reproduced pilot signals are vector separated and detected. Further, the vector separated amplitude values are vector synthesized and detected. Therefore, by multiplying the signals having the same frequencies as those of the pilot signals, the synchronous detection is performed. The influence due to the undetected pilot phases is solved by detecting by performing the vector separation and synthesis. Therefore, the amplitude values can be certainly detected by the synchronous detection. The signal to noise ratio of the reproduction pilot signals can be determined by the LPFs (lowpass filters). Even in the case of a bad transmission signal to noise ratio of the reproduction pilot signals which could not be coped by the conventional construction, the amplitude values can be certainly detected.

公开(公告)号：US5793925A

公开(公告)日：1998-08-11

申请号：US607386

申请日：1996-02-27

申请人： Yoshio Sakakibara ,  Haruo Isaka ,  Kenichi Honjo ,  Satoshi Ohyama

发明人： Yoshio Sakakibara ,  Haruo Isaka ,  Kenichi Honjo ,  Satoshi Ohyama

IPC分类号： G11B27/10 ,  G11B15/467 ,  G11B27/032 ,  G11B27/32 ,  H04N5/7826 ,  H04N5/76

CPC分类号： G11B27/324 ,  G11B27/032 ,  H04N5/78266

摘要： A method and apparatus for recording control pulses on a control track are provided. The control pulses correspond to a number M (where M is an integer equal to or larger than four) of azimuthal tracks on the tape on which the number M of segmented data, obtained by dividing image data corresponding to one frame into the number M of segments, are recorded. One period of the control pulses corresponds to a number N (where N is a divisor of M) of azimuthal tracks, and a duty ratio pattern of the control pulses in a number L (L=M/N) of successive periods corresponding to one frame is different in each of a number K (where K is an integer equal to or larger than two) of successive frames.

摘要翻译： 提供了一种用于在控制轨道上记录控制脉冲的方法和装置。 控制脉冲对应于通过将对应于一帧的图像数据划分为数字M的分段数据的数量M的带上的方位轨道的数量M（其中M是等于或大于四的整数） 记录。 控制脉冲的一个周期对应于方位轨道的数量N（其中N是M的除数），并且对应于一个连续周期的L（L = M / N）个数的控制脉冲的占空比模式 帧的数量K（其中K是等于或大于2的整数）的连续帧中的每一个不同。

公开(公告)号：US06424483B1

公开(公告)日：2002-07-23

申请号：US08751480

申请日：1996-11-18

申请人： Kenichi Honjo ,  Haruo Isaka ,  Satoshi Ohyama ,  Masafumi Nishida ,  Yoshio Sakakibara ,  Toshiyuki Kohri ,  Koji Sakurai

发明人： Kenichi Honjo ,  Haruo Isaka ,  Satoshi Ohyama ,  Masafumi Nishida ,  Yoshio Sakakibara ,  Toshiyuki Kohri ,  Koji Sakurai

IPC分类号： G11B1552

CPC分类号： G11B15/125 ,  G11B5/5927 ,  G11B15/087 ,  G11B15/1808 ,  G11B15/1875 ,  G11B15/20 ,  G11B15/4675 ,  G11B15/4678 ,  G11B15/48 ,  G11B15/52 ,  G11B15/54 ,  G11B27/032 ,  G11B27/13 ,  G11B27/322 ,  G11B2220/90

摘要： A magnetic recording and reproducing device according to the present invention operates with steps of moving a magnetic tape having a plurality of tracks per frame and a plurality of control signals recorded thereon, keeping count of the pulses of a frequency generator signal corresponding to the rotation of a capstan motor by a frequency generator counter, resetting the count of the frequency generator pulses by the control signal reproduced by a fixed magnetic head, detecting the track number by the control signal counter reset by a frame reference signal, controlling, at the start, the start timing on the basis of the tape stop position detected by the frequency generator pulse counter and control counter and the reference frame signal from the reference frame signal generator. The device prevents thinning of tracks at the editing point in after-break recording and the disturbance of images immediately after the start. The device does not require a special circuit or complicated software-wise processing, and provides a stabilized slow-reproduced image. Further, in a magnetic recording and reproducing device for intermittent recording, there is no danger of causing thinning to recorded tracks. Thus, a reproduced image of high quality can be obtained.

摘要翻译： 根据本发明的磁记录和再现装置的操作步骤是移动每帧具有多个磁道的磁带和记录在其上的多个控制信号，保持对应于频率发生器信号的旋转的脉冲数 通过频率发生器计数器的主导轴电动机，通过由固定磁头再现的控制信号来复位频率发生器脉冲的计数，通过由帧参考信号重新设置的控制信号计数器检测磁道号， 基于由频率发生器脉冲计数器和控制计数器检测的磁带停止位置的起始定时和来自参考帧信号发生器的参考帧信号。 该设备防止在断点录制时的编辑点的轨道变薄，以及开始后立即对图像的干扰。 该设备不需要特殊电路或复杂的软件处理，并提供稳定的慢再现图像。 此外，在用于间歇记录的磁记录和再现装置中，不存在导致记录轨迹变薄的危险。 因此，可以获得高质量的再现图像。

公开(公告)号：US07486308B1

公开(公告)日：2009-02-03

申请号：US09744395

申请日：2000-05-23

申请人： Toshiyuki Kori ,  Haruo Isaka ,  Kenichi Honjo

发明人： Toshiyuki Kori ,  Haruo Isaka ,  Kenichi Honjo

IPC分类号： H04N7/18 ,  H04N5/95

CPC分类号： H04L12/40058 ,  H04L12/40071 ,  H04L12/40117 ,  H04N5/04 ,  H04N5/073 ,  H04N5/268 ,  H04N5/4401 ,  H04N7/181 ,  H04N21/422 ,  H04N21/43615 ,  H04N21/43632

摘要： An image switching device for connecting to a plurality of image output devices via a digital interface having the capability of selecting image outputs sequentially of the image outputting devices. Cameras (101 to 104) are connected to a camera switching device (105) via an IEEE 1394 standard-based digital interface (114). Synchronizing timing signals transmitted in isochronous communication packets from the camera switching device (105) are synchronized with image signals on the camera (101 to 104) sides, each camera (101 to 104) transmits its image signals in synchronous communication packets based on image switching control data transmitted in asynchronous communication packets or isochronous communication packets from a camera switching control unit (106), and the camera switching device (105) selectively receives image data transmitted from a desired camera based on image switching control data.

摘要翻译： 一种图像切换装置，用于经由具有依次选择图像输出装置的图像输出的能力的数字接口连接到多个图像输出装置。 相机（101至104）经由基于IEEE 1394标准的数字接口（114）连接到照相机切换装置（105）。 将来自摄像机切换装置（105）的同步通信分组中发送的定时信号的同步与摄像机（101至104）侧的图像信号同步，每个摄像机（101至104）基于图像切换以同步通信分组传送其图像信号 控制数据从摄像机切换控制单元（106）发送到异步通信分组或等时通信分组中，并且相机切换设备（105）基于图像切换控制数据选择性地接收从期望的相机发送的图像数据。

公开(公告)号：US07130147B2

公开(公告)日：2006-10-31

申请号：US11268783

申请日：2005-11-08

申请人： Kenichi Honjo ,  Yoshikazu Kato ,  Haruo Isaka ,  Toshiyuki Kori

发明人： Kenichi Honjo ,  Yoshikazu Kato ,  Haruo Isaka ,  Toshiyuki Kori

IPC分类号： G11B5/584 ,  G11B15/467

CPC分类号： G11B15/4676 ,  G11B5/00839 ,  G11B5/5927 ,  G11B15/12

摘要： A sync signal time difference detection circuit detects a time difference of reproduced sync signals reproduced by a first head and a second head having different azimuth angles. Rotation of a capstan motor is controlled in accordance with sync signal time difference information output from the sync signal time difference detection circuit, thereby performing a highly accurate tracking control not affected by jitter or eccentricity.

公开(公告)号：US20060056102A1

公开(公告)日：2006-03-16

申请号：US11268783

申请日：2005-11-08

申请人： Kenichi Honjo ,  Yoshikazu Kato ,  Haruo Isaka ,  Toshiyuki Kori

发明人： Kenichi Honjo ,  Yoshikazu Kato ,  Haruo Isaka ,  Toshiyuki Kori

IPC分类号： G11B5/584 ,  G11B15/52

CPC分类号： G11B15/4676 ,  G11B5/00839 ,  G11B5/5927 ,  G11B15/12

摘要： A sync signal time difference detection circuit detects a time difference of reproduced sync signals reproduced by a first head and a second head having different azimuth angles. Rotation of a capstan motor is controlled in accordance with sync signal time difference information output from the sync signal time difference detection circuit, thereby performing a highly accurate tracking control not affected by jitter or eccentricity.

摘要翻译： 同步信号时差检测电路检测由具有不同方位角的第一头和第二头再现的再现同步信号的时差。 根据从同步信号时差检测电路输出的同步信号时差信息来控制主导轴电机的旋转，由此执行不受抖动或偏心影响的高精度跟踪控制。

公开(公告)号：US06266479B1

公开(公告)日：2001-07-24

申请号：US09242113

申请日：1999-02-09

申请人： Toshiyuki Kohri ,  Haruo Isaka ,  Kenichi Honjo

发明人： Toshiyuki Kohri ,  Haruo Isaka ,  Kenichi Honjo

IPC分类号： H04N5783

CPC分类号： H04N5/9205 ,  H04N5/783 ,  H04N5/9201 ,  H04N7/181

摘要： The present invention is a video signal recording and reproducing apparatus for recording and reproducing video signals (SvN) inputted from a plurality (n) of different cameras (CMn). A frame switcher (2) sequentially selects one of the video signals (SvN) in prescribed order, and identifying signal adders (10a, 10b) add an identifying signal (Sid) representing a corresponding camera number (N) to the selected video signal (SvN) and generate recording signals (Sr1, Sr2). A recording signal processor (11) modulates the recording signals (Sr1, Sr2) and recording magnetic heads (16a, 16b) record them on a magnetic tape (4). Reproducing heads (15a, 15b) reproduce a recorded recording signal (Sr′) from the magnetic tape (4) and a reproducing processor (14) demodulates the signal. A camera number detector (23) detects the identifying signal (Sid) from a demodulated video signal (Sr2′). Memory (24) stores the demodulated video signal (Sr2′) in relation to the detected identifying signal (Sid), thereby allowing high-speed and normal-speed replay of video from a desired video signal source without video signals from a plurality of video signal sources mixed into.

摘要翻译： 本发明是用于记录和再现从多个（n）个不同相机（CMn）输入的视频信号（SvN）的视频信号记录和再现装置。 帧切换器（2）以规定顺序依次选择视频信号（SvN）中的一个，识别信号加法器（10a，10b）将表示相应摄像机号码（N）的识别信号（Sid）加到所选视频信号 SvN）并产生记录信号（Sr1，Sr2）。 记录信号处理器（11）将记录信号（Sr1，Sr2）和记录磁头（16a，16b）记录在磁带（4）上。 再现头（15a，15b）从磁带（4）再现记录的记录信号（Sr'），再现处理器（14）对信号进行解调。 相机号码检测器（23）从解调视频信号（Sr2'）检测识别信号（Sid）。 存储器（24）相对于检测到的识别信号（Sid）存储解调的视频信号（Sr2'），从而允许来自所需视频信号源的视频的高速和正常速度重放，而没有来自多个视频的视频信号 信号源混入。