公开(公告)号：US5617147A

公开(公告)日：1997-04-01

申请号：US512372

申请日：1995-08-08

申请人： Tadashi Ezaki

发明人： Tadashi Ezaki

IPC分类号： H04N7/015 ,  H04N7/083 ,  H04N7/087 ,  H04N7/088 ,  H04N9/79 ,  H04N9/82 ,  H04N7/00 ,  H04N7/01

CPC分类号： H04N7/0122 ,  H04N7/087 ,  H04N7/088 ,  H04N9/7925 ,  H04N9/8205

摘要： When a picture having a different aspect ratio is displayed, a portion to be cut on the picture can be set properly. In a video signal transmission system in which a pulse signal is superimposed upon a video signal in a predetermined horizontal line within a vertical blanking period thereof and then transmitted, when an aspect ratio of a picture displayed on the basis of a video signal is different from an aspect ratio of a picture screen of a monitor receiver, an information instructing a portion, which is not displayed on the picture screen due to a difference between the two aspect ratios, is superimposed upon a predetermined horizontal line within the vertical blanking period as a pulse signal.

摘要翻译： 当显示具有不同宽高比的图像时，可以适当地设置图像上要切割的部分。 在视频信号传输系统中，其中脉冲信号叠加在其垂直消隐周期内的预定水平线中的视频信号上，然后发送，当基于视频信号显示的图像的纵横比不同于 监视接收机的画面的纵横比，指示由于两个宽高比之间的差异而不在画面上显示的部分的信息被叠加在垂直消隐期间内的预定水平线上，作为 脉冲信号。

公开(公告)号：US5543926A

公开(公告)日：1996-08-06

申请号：US181194

申请日：1994-01-13

申请人： Tadashi Ezaki

发明人： Tadashi Ezaki

IPC分类号： G11B20/02 ,  H04N5/208 ,  H04N5/911 ,  H04N5/93 ,  H04N5/931 ,  H04N9/79 ,  H04N5/78

CPC分类号： H04N9/7908 ,  H04N5/911 ,  H04N5/931 ,  H04N9/7921

摘要： A recording and reproducing apparatus which can prevent deterioration of the picture quality from being caused by an overshoot, a ringing or a noise component when, using a video tape recorder which can process two kinds of video signals having different aspect ratios, a video signal having a greater one of the aspect ratios is reflected on a television set. The recording and reproducing apparatus comprises a peaking circuit for adding an overshoot or a ringing to a video signal, a noise canceller circuit for cancelling noise from the video signal and a comb line filter for removing noise from the video signal. The peaking circuit, the noise canceller circuit and the comb line filter are capable of changing over the peaking frequency, the noise cancelling characteristic and the comb line filter characteristic thereof, respectively, in accordance with an aspect ratio of the video signal.

摘要翻译： 一种记录和再现装置，当使用能够处理具有不同宽高比的两种视频信号的磁带录像机时，能够防止由于过冲，振铃或噪声成分引起的图像质量的劣化，具有 宽高比之一更大地反映在电视机上。 记录和再现装置包括用于将视频信号增加过冲或振铃的峰化电路，用于从视频信号中消除噪声的噪声消除电路和用于从视频信号中去除噪声的梳状线滤波器。 峰值电路，噪声消除电路和梳状线滤波器能够根据视频信号的宽高比分别改变峰值频率，噪声消除特性和梳状线滤波器特性。

公开(公告)号：US5453794A

公开(公告)日：1995-09-26

申请号：US130469

申请日：1993-10-01

申请人： Tadashi Ezaki

发明人： Tadashi Ezaki

IPC分类号： H04N7/083 ,  H04N7/035 ,  H04N7/08 ,  H04N7/081 ,  H04N7/087 ,  H04N7/088

CPC分类号： H04N7/0355 ,  H04N7/035 ,  H04N7/0352

摘要： A data decoding device capable of decoding plural kinds of data superimposed in a vertical blanking period of a video signal. The device comprises means for detecting the line number and the intraline position in the vertical blanking period from vertical and horizontal sync signals and generating a line signal extract pulse, a data signal extract pulse and a reference signal extract pulse; binary circuit means for converting the video signal into a binary signal; PLL means for producing a data extract clock signal in synchronism with a clock reference signal extracted on the basis of the line signal extract pulse and the reference signal extract pulse; memory means supplied with the data extract clock signal and the binary signal in response to the line signal extract pulse and the data signal extract pulse, and storing the data signal therein; and control means capable of designating a plurality of durations for generating the respective extract pulses and a plurality of frequency division ratios in the PLL means. In the device, the circuits are usable in common to achieve curtailment in the production cost.

摘要翻译： 一种能够对在视频信号的垂直消隐期叠加的多种数据进行解码的数据解码装置。 该装置包括用于从垂直和水平同步信号中检测垂直消隐周期中的线路数和路线位置的装置，并产生线路信号提取脉冲，数据信号提取脉冲和参考信号提取脉冲; 用于将视频信号转换为二进制信号的二进制电路装置; PLL装置，用于与基于线信号提取脉冲和参考信号提取脉冲提取的时钟参考信号同步地产生数据提取时钟信号; 响应于线信号提取脉冲和数据信号提取脉冲而提供数据提取时钟信号和二进制信号的存储装置，并在其中存储数据信号; 以及控制装置，其能够指定用于在PLL装置中产生各个提取脉冲和多个分频比的多个持续时间。 在设备中，电路可以共同使用，以实现生产成本的削减。

公开(公告)号：US5329374A

公开(公告)日：1994-07-12

申请号：US992002

申请日：1992-12-17

申请人： Tadashi Ezaki

发明人： Tadashi Ezaki

IPC分类号： G11B20/02 ,  H04N5/208 ,  H04N5/911 ,  H04N5/93 ,  H04N5/931 ,  H04N9/79 ,  H04N5/78

CPC分类号： H04N9/7908 ,  H04N5/911 ,  H04N5/931 ,  H04N9/7921

摘要： A recording and reproducing apparatus which can prevent deterioration of the picture quality from being caused by an overshoot, a ringing or a noise component when, using a video tape recorder which can process two kinds of video signals having different aspect ratios, a video signal having a greater one of the aspect ratios is reflected on a television set. The recording and reproducing apparatus comprises a peaking circuit for adding an overshoot or a ringing to a video signal, a noise canceller circuit for cancelling noise from the video signal and a comb line filter for removing noise from the video signal. The peaking circuit, the noise canceller circuit and the comb line filter are capable of changing over the peaking frequency, the noise cancelling characteristic and the comb line filter characteristic thereof, respectively, in accordance with an aspect ratio of the video signal.

摘要翻译： 一种记录和再现装置，当使用能够处理具有不同宽高比的两种视频信号的磁带录像机时，能够防止由于过冲，振铃或噪声成分引起的图像质量的劣化，具有 宽高比之一更大地反映在电视机上。 记录和再现装置包括用于将视频信号增加过冲或振铃的峰化电路，用于从视频信号中消除噪声的噪声消除电路和用于从视频信号中去除噪声的梳状线滤波器。 峰值电路，噪声消除电路和梳状线滤波器能够根据视频信号的宽高比分别改变峰值频率，噪声消除特性和梳状线滤波器特性。

公开(公告)号：US4922331A

公开(公告)日：1990-05-01

申请号：US209189

申请日：1988-06-20

申请人： Tadashi Ezaki

发明人： Tadashi Ezaki

IPC分类号： H04N9/78 ,  H04N9/79 ,  H04N9/85 ,  H04N9/87

CPC分类号： H04N9/85 ,  H04N9/7908

摘要： A video signal reproducing apparatus has a filter circuit interposed in a transmission path for a reproduced luminance signal, and the characteristic of the filter circuit desirably includes a band-eliminating characteristic and a comb-filter passband characteristic which can be selectively emphasized. When the reproduced luminance signal has a normal or relatively smaller frequency bandwidth or a relatively small line correlation component, or when the level of the reproduced carrier chrominance signal is high, the band-eliminating characteristic of the filter circuit is emphasized. The foregoing video signal reproducing apparatus is particularly suited for reproducing a color video signal that includes a wide band luminance signal, in which case the comb-filter passband characteristic of the filter circuit is selected or emphasized so as to reduce noise near the color subcarrier frequency, to avoid displacement of a reproduced picture of high definition in the vertical direction and also to avoid interference caused by the vertical non-correlation component of a color picture.

摘要翻译： 视频信号再现装置具有插入用于再现的亮度信号的传输路径中的滤波器电路（31），滤波器电路（31）的特性理想地包括频带消除特性和梳状滤波器通带特性，其可以是 有选择地强调。 当再现的亮度信号具有正常或相对较小的频率带宽或相对较小的线相关分量时，或者当再现的载波色度信号的电平高时，强调滤波器电路的带除特性。 上述视频信号再现装置特别适用于再现包括宽带亮度信号的彩色视频信号，在这种情况下，选择或强调滤波器电路的梳状滤波器通带特性，以便降低彩色副载波频率附近的噪声 ，以避免垂直方向上的高分辨率再现图像的位移，并且避免由彩色图像的垂直非相关分量引起的干扰。