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公开(公告)号：EP0411440A3
公开(公告)日：1992-01-29
申请号：EP90114159.8
申请日：1990-07-24
CPC分类号： H04N9/7925 , H04N5/23293 , H04N5/335 , H04N9/79 , H04N9/7921 , H04N9/83
摘要： Herein disclosed is a camera recording system which is capable of selectively imaging an image having an aspect ratio - a ratio between the horizontal length and vertical length of a frame - of 4 : 3 as in the NTSC system and an image having a horizontally longer aspect ratio of m : n (m/n > 4/3) than the former ratio. Further disclosed is a usable method which allows the user to take only one turn for selecting the aspect ratio. The method is represented by three kinds: one using a lens unit; another using the scanning range of an image tube; and still another using an expander circuit. What is required of the user is only one turn of switching the lenses or switches, and the remaining necessary switching operations are automated.
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公开(公告)号：EP0411440A2
公开(公告)日：1991-02-06
申请号：EP90114159.8
申请日：1990-07-24
CPC分类号： H04N9/7925 , H04N5/23293 , H04N5/335 , H04N9/79 , H04N9/7921 , H04N9/83
摘要： Herein disclosed is a camera recording system which is capable of selectively imaging an image having an aspect ratio - a ratio between the horizontal length and vertical length of a frame - of 4 : 3 as in the NTSC system and an image having a horizontally longer aspect ratio of m : n (m/n > 4/3) than the former ratio. Further disclosed is a usable method which allows the user to take only one turn for selecting the aspect ratio. The method is represented by three kinds: one using a lens unit; another using the scanning range of an image tube; and still another using an expander circuit. What is required of the user is only one turn of switching the lenses or switches, and the remaining necessary switching operations are automated.
摘要翻译： 这里公开了一种照相机记录系统，其能够选择性地成像具有如NTSC制中那样具有纵横比 - 帧的水平长度和垂直长度之间的比例为4：3的图像的图像，以及具有水平更长方面的图像 m：n（m / n> 4/3）的比率。 进一步公开的是一种可用的方法，其允许用户仅选择一匝来选择宽高比。 该方法由三种：一种使用透镜单元; 另一个使用图像管的扫描范围; 还有另一个使用扩展器电路。 用户需要的只是转动镜头或开关的一圈，并且剩余的必要的切换操作是自动化的。
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公开(公告)号：EP0487092B1
公开(公告)日：1998-09-30
申请号：EP91119886.9
申请日：1991-11-21
申请人： HITACHI, LTD.
IPC分类号： H04N9/79
CPC分类号： H04N5/928 , H04N9/7925
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公开(公告)号：EP0487092A3
公开(公告)日：1993-08-18
申请号：EP91119886.9
申请日：1991-11-21
申请人： HITACHI, LTD.
IPC分类号： H04N9/79
CPC分类号： H04N5/928 , H04N9/7925
摘要： A video tape recorder allows a normal video signal for an aspect ratio of 4 : 3 or a wide-picture video signal for a greater aspect ratio of, for example, 16 : 9 to be selectively recorded/reproduced onto and from a magnetic tape. In order to identify which of the aspect ratios the reproduced video signal is based on, a recording mode signal indicative of the aspect ratio is recorded on the magnetic tape together with the video signal. A code signal or a pilot signal is used for the recording mode signal. In the reproducing operation, the aspect ratio of a reproduced picture is recognized from the recording mode signal, and a signal indicative of the aspect ratio is delivered to an external device, such as television set, together with reproduced video/audio signals. In a case where the reproduced picture is a wide picture and where the external device is not conformed to the wide picture, the aspect ratio of the video signal is changed. The television set suited to the features of the video tape recorder is also disclosed.
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5.发明公开
公开(公告)号：EP0487092A2
公开(公告)日：1992-05-27
申请号：EP91119886.9
申请日：1991-11-21
申请人： HITACHI, LTD.
IPC分类号： H04N9/79
CPC分类号： H04N5/928 , H04N9/7925
摘要： A video tape recorder allows a normal video signal for an aspect ratio of 4 : 3 or a wide-picture video signal for a greater aspect ratio of, for example, 16 : 9 to be selectively recorded/reproduced onto and from a magnetic tape. In order to identify which of the aspect ratios the reproduced video signal is based on, a recording mode signal indicative of the aspect ratio is recorded on the magnetic tape together with the video signal. A code signal or a pilot signal is used for the recording mode signal. In the reproducing operation, the aspect ratio of a reproduced picture is recognized from the recording mode signal, and a signal indicative of the aspect ratio is delivered to an external device, such as television set, together with reproduced video/audio signals. In a case where the reproduced picture is a wide picture and where the external device is not conformed to the wide picture, the aspect ratio of the video signal is changed. The television set suited to the features of the video tape recorder is also disclosed.
摘要翻译： 视频磁带录像机允许正常视频信号的纵横比为4：3，或宽画面视频信号，例如16：9的较大宽高比可以从磁带上选择性地记录/再现。 为了识别再现的视频信号基于哪个宽高比，表示宽高比的记录模式信号与视频信号一起被记录在磁带上。 代码信号或导频信号用于记录模式信号。 在再现操作中，从记录模式信号中识别再现图像的纵横比，并且指示宽高比的信号与再现的视频/音频信号一起传送到诸如电视机的外部设备。 在再现图像是宽画面并且外部设备不符合宽画面的情况下，视频信号的宽高比被改变。 还公开了适用于录像机的特征的电视机。
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公开(公告)号：EP0091103A3
公开(公告)日：1986-11-26
申请号：EP83103231
申请日：1983-03-31
申请人： Hitachi, Ltd.
发明人： Wada, Isao , Yoshioka, Atsushi , Shibata, Akira
IPC分类号： H04N09/491 , H04N09/497
CPC分类号： H04N9/802 , H04N5/931 , H04N9/8355
摘要： In a magnetic recording apparatus for frequency multiplexing and recording a frequency-modulated luminance signal, a chrominance signal, a frequency-modulated audio signal and a pilot signal on a magnetic tape (54), the signal level of the frequency-modulated luminance signal is adjusted by a first signal level adjuster (20), and the chrominance signal, the pilot signal and the frequency-modulated audio signal are mixed and then subjected to signal level adjustment by a second signal level adjuster (31). The signal levels of the four signals can be adjusted by the two level adjusters (20, 31).
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7.发明公开
公开(公告)号：EP0439132A1
公开(公告)日：1991-07-31
申请号：EP91100811.8
申请日：1991-01-23
申请人： HITACHI, LTD.
IPC分类号： H04N5/782
CPC分类号： H04N1/212 , G11B15/087 , G11B20/10527 , G11B20/1806 , G11B27/107 , G11B27/3027 , G11B2220/90 , H04N1/2112 , H04N1/2137 , H04N5/928 , H04N5/945 , H04N9/7921 , H04N9/87 , H04N2101/00
摘要： In a magnetic recording and reproducing apparatus, wherein a moving picture signal and an audio signal following the moving picture are recorded and reproduced on a first area in a recording track inclined to a traveling direction of a magnetic tape and digital data indicating a one-cut (a frame or a field) still picture signal is recorded and reproduced on a second area in the recording track, there are provided a circuit (157) for detecting that digital data indicating the still picture is reproduced by an amount of data corresponding to the one-cut still picture, a switch (1) which is operated by a person who monitors pictures and used to instruct restart of the magnetic tape, and a logic circuit (3).
The logic circuit (3) generates an instruction for switching the reproduced signal output from the moving picture to the still picture on the basis of the output of the detection circuit (157), an instruction for rewinding the magnetic tape to near the recording start position of the digital data indicating the still picture and stopping the magnetic tape there, an instruction for switching the reproducing signal output from the still picture to the moving picture when the switch (1) is operated, and an instruction for traveling the magnetic tape once again at the general traveling speed for reproducing the moving picture signal.摘要翻译： 在磁记录和再现装置中，其中在运动图像之后的运动图像信号和音频信号在与磁带的行进方向倾斜的记录轨道中的第一区域上被记录和再现，并且指示一切 （帧或场）静止图像信号被记录和再现在记录轨道的第二区域上，提供了一个电路（157），用于检测表示静止图像的数字数据被再现的数据量对应于 一切静止图像，由监视图像的人操作并用于指示磁带的重新启动的开关（1）和逻辑电路（3）。 逻辑电路（3）根据检测电路（157）的输出，生成用于将从运动图像输出的再现信号切换为静止图像的指令，将磁带重绕到记录开始位置附近的指令 指示静止图像并停止磁带的数字数据，当操作开关（1）时，将从静止图像输出的再现信号切换到运动图像的指令以及再次使磁带行进的指令 用于再现运动图像信号的一般行进速度。
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公开(公告)号：EP0168834A2
公开(公告)日：1986-01-22
申请号：EP85108996.1
申请日：1985-07-18
申请人： HITACHI, LTD.
IPC分类号： H04N5/92
CPC分类号： H04N9/896 , H04N5/78266 , H04N5/92
摘要： In a rotary magnetic head helical scan type video tape recorder using a segment recording system, a video signal of one vertical scanning period is divided into n video signal blocks (V), where n is an integer equal to or larger than 2, and a redundant period (V-BLK) having a predetermined period is inserted into the video signal blocks (V) in a recording mode. Each of the video signal blocks (V) has a number of horizontal scanning lines equal or smaller than N/n, where N is the number of the horizontal scanning lines in a field of the video signal. In a reproducing mode, a time axis error of reproduced series of the video signal blocks (V) is corrected at least during the redundant periods (V-BLK). Then, the corrected blocks are converted into the original video signal.
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公开(公告)号：EP0168834B2
公开(公告)日：1996-11-06
申请号：EP85108996.1
申请日：1985-07-18
申请人： HITACHI, LTD.
IPC分类号： H04N5/92
CPC分类号： H04N9/896 , H04N5/78266 , H04N5/92
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公开(公告)号：EP0103287B1
公开(公告)日：1991-01-09
申请号：EP83108932.1
申请日：1983-09-09
申请人： HITACHI, LTD.
CPC分类号： H04N9/793 , H04N9/79 , H04N9/7921 , H04N9/7933 , H04N9/8355
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