公开(公告)号：US4751589A

公开(公告)日：1988-06-14

申请号：US727381

申请日：1985-04-25

申请人： Hisanori Kominami ,  Kaichi Tatsuzawa

发明人： Hisanori Kominami ,  Kaichi Tatsuzawa

IPC分类号： G11B20/10 ,  H04N5/92 ,  H04N5/926 ,  H04N5/937 ,  H04N5/78

CPC分类号： H04N5/926 ,  H04N5/92 ,  H04N5/937

摘要： A recorded video signal reproduction in digital process involves switching among a plurality of field memories into which to store image data for one video field picked up by a rotary head and from which to retrieve image data for reproduction, each time the scanning for one record area is completed. The method also includes a process for detecting reversal of a tape drive direction and disabling the switching among field memory for a given period so as to hold the video image reproduced on a video monitor unchanged.

摘要翻译： 在数字处理中记录的视频信号再现涉及在多个场存储器之间进行切换，其中存储由旋转磁头拾取的一个视频场的图像数据，并从中检索用于再现的图像数据，每次扫描一个记录区域 完成了。 该方法还包括用于检测磁带驱动方向的反转并且在给定时间段内禁止在场存储器之间的切换以便保持在视频监视器上再现的视频图像不变的处理。

公开(公告)号：US4742519A

公开(公告)日：1988-05-03

申请号：US865126

申请日：1986-05-20

申请人： Takao Abe ,  Kaichi Tatsuzawa ,  Hisanori Kominami ,  Tetsuro Suma ,  Tetsuo Ogawa ,  Hiroki Kotani

发明人： Takao Abe ,  Kaichi Tatsuzawa ,  Hisanori Kominami ,  Tetsuro Suma ,  Tetsuo Ogawa ,  Hiroki Kotani

IPC分类号： G06F11/10 ,  G11B20/18 ,  H03M13/00 ,  H03M13/29 ,  H04N5/93 ,  H04N5/945

CPC分类号： H04N5/93 ,  G11B20/1809 ,  H03M13/29 ,  H04N5/945

摘要： Apparatus for decoding an error detecting or correcting code constructed from digital information data and redundant data for detecting or correcting errors in the digital information data, the digital information data and redundant data being reproduced from a record medium by a playback apparatus that operates in a normal speed mode and fast and slow speed modes, includes a first decoder for decoding the error detecting or correcting code and for generating flag data indicating error conditions of the digital information data, a first memory for storing the digital information data subjected to the decoding in the first decoder, and a second memory for storing flag data. A controller is provided with a mode signal indicating a normal playback mode or a fast playback mode of the record medium playback apparatus for controlling the first and second memories so as to read out the digital information data and flag data, respectively, when the mode signal indicates the normal reproducing mode and so as to read out the digital information data without error and the flag data, respectively, when the mode signal indicates the fast reproducing mode.

摘要翻译： 用于解码由数字信息数据构成的错误检测或校正码的装置和用于检测或校正数字信息数据中的错误的冗余数据，数字信息数据和从正常操作的重放装置从记录介质再现的冗余数据 速度模式和快速和慢速模式包括用于解码错误检测或纠正码并产生指示数字信息数据的错误状况的标志数据的第一解码器，用于存储经过解码的数字信息数据的第一存储器 第一解码器和用于存储标志数据的第二存储器。 控制器具有指示用于控制第一和第二存储器的记录介质重放装置的正常重放模式或快速重放模式的模式信号，以便在模式信号时分别读出数字信息数据和标志数据 表示正常再现模式，并且当模式信号表示快速再现模式时，分别读出无差错的数字信息数据和标志数据。

公开(公告)号：US5194939A

公开(公告)日：1993-03-16

申请号：US796378

申请日：1991-11-22

申请人： Nobuyoshi Kobayashi ,  Hisanori Kominami

发明人： Nobuyoshi Kobayashi ,  Hisanori Kominami

IPC分类号： H04N5/92 ,  H03H17/06 ,  H04N5/14 ,  H04N9/804 ,  H04N9/808 ,  H04N19/00 ,  H04N19/423 ,  H04N19/59 ,  H04N19/80

CPC分类号： H03H17/06 ,  H04N9/8042

摘要： A digital video signal processing apparatus for reducing the data rate of, and interpolating digital, video signals of a component format. The apparatus comprises a half-band high pass filter having a coefficient profile equivalent to that obtained by setting a center coefficient of an odd-order half-band low pass filter to zero, or a notch filter having a coefficient profile equivalent to that obtained by eliminating a center coefficient and even-numbered coefficients of such a low pass filter, and a delay line for giving a predetermined delay time to the signal supplied thereto, whereby the data rate of multiplexed or time-divided signals can be reduced, or the signals interpolated, in a relatively simple design employing a single digital filter.

公开(公告)号：US5307157A

公开(公告)日：1994-04-26

申请号：US021521

申请日：1993-02-23

申请人： Nobuyoshi Kobayashi ,  Hisanori Kominami

发明人： Nobuyoshi Kobayashi ,  Hisanori Kominami

IPC分类号： H04N5/92 ,  H03H17/06 ,  H04N5/14 ,  H04N9/804 ,  H04N9/808 ,  H04N19/00 ,  H04N19/423 ,  H04N19/59 ,  H04N19/80 ,  H04N9/64

CPC分类号： H03H17/06 ,  H04N9/8042

摘要： A digital video signal processing apparatus for reducing the data rate of, and interpolating digital, video signals of a component format. The apparatus comprises a half-band high pass filter having a coefficient profile equivalent to that obtained by setting a center coefficient of an odd-order half-band low pass filter to zero, or a notch filter having a coefficient profile equivalent to that obtained by eliminating a center coefficient and even-numbered coefficients of such a low pass filter, and a delay line for giving a predetermined delay time to the signal supplied thereto, whereby the data rate of multiplexed or time-divided signals can be reduced, or the signals interpolated, in a relatively simple design employing a single digital filter.

摘要翻译： 一种用于降低分量格式的数字速率和内插数字视频信号的数字视频信号处理装置。 该装置包括具有等于通过将奇数半频带低通滤波器的中心系数设置为零而获得的系数分布的半带高通滤波器，或具有等于由 消除这种低通滤波器的中心系数和偶数系数，以及用于给予其提供的信号预定的延迟时间的延迟线，从而可以减少多路复用或分时信号的数据速率，或者信号 以采用单个数字滤波器的相对简单的设计进行内插。