公开(公告)号：EP0534220B1

公开(公告)日：1997-08-13

申请号：EP92115281.5

申请日：1992-09-07

申请人： HITACHI, LTD.

发明人： Katsumata, Kenji ,  Hirahata, Shigeru ,  Takata, Haruki ,  Konno, Mitsuo ,  Ishibashi, Kouichi ,  Kaizaki, Kazuhiro ,  Matono, Takaaki ,  Haratani, Atushi

IPC分类号： H04N5/262

CPC分类号： H04N7/0122 ,  G06T3/40 ,  H04N5/2628

公开(公告)号：EP0606855A1

公开(公告)日：1994-07-20

申请号：EP94100180.2

申请日：1994-01-07

申请人： HITACHI, LTD.

发明人： Kaizaki, Kazuhiro ,  Kamimura, Masako ,  Matono, Takaaki, No. 303 ,  Kubota, Sadao

IPC分类号： H04N5/44

CPC分类号： H04N7/0122

摘要： A television receiver which can display images in different displaying forms on a display screen with an aspect ratio of 16:9 by controlling the video chroma processing circuit by the micro computer by operating the remote controlled signal acceptor or the key switch has memories. The first memory stores video control data for each displaying form and the second memory stores appointed data for designating predetermined video control data. When the displaying form is changed by operating the remote controlled signal acceptor or the key switch, the micro computer reads the video control data corresponding to the displaying form which is newly set from the first memory according to the appointed data of the second memory and changes, for example, the contrast characteristic in the signal processing circuit according to the read data. By doing this, in the television receiver which is applicable to both a high quality television system and the conventional television system, when displaying images of conventional television signals in different displaying forms on a display screen with an aspect ratio of 16:9, the most suitable image quality can be obtained for each displaying form.

摘要翻译： 通过操作遥控信号接收器或按键开关，通过由微型计算机控制视频色度处理电路，可以在宽高比为16:9的显示屏幕上以不同显示形式显示图像的电视接收机具有存储器。 第一存储器存储用于每种显示形式的视频控制数据，并且第二存储器存储用于指定预定视频控制数据的指定数据。 当通过操作遥控信号接收器或按键开关改变显示形式时，微型计算机根据第二存储器的指定数据从第一存储器读取与新设置的显示形式对应的视频控制数据，并改变 例如根据读取的数据在信号处理电路中的对比度特性。 通过这样做，在适用于高质量电视系统和传统电视系统两者的电视接收机中，当在具有16：9的宽高比的显示屏幕上以不同显示形式显示传统电视信号的图像时， 可以为每种显示形式获得合适的图像质量。

公开(公告)号：EP0534220A3

公开(公告)日：1993-06-09

申请号：EP92115281.5

申请日：1992-09-07

申请人： HITACHI, LTD.

发明人： Katsumata, Kenji ,  Hirahata, Shigeru ,  Takata, Haruki ,  Konno, Mitsuo ,  Ishibashi, Kouichi ,  Kaizaki, Kazuhiro ,  Matono, Takaaki ,  Haratani, Atushi

IPC分类号： H04N5/262

CPC分类号： H04N7/0122 ,  G06T3/40 ,  H04N5/2628

摘要： A video signal processing circuit is provided to display an image of a standard television signal on a display unit with a 16:9 aspect ratio by enlarging an image of a video signal in the horizontal and vertical directions by a magnification factor which depends on the feature of the standard television signal. The processing circuit includes a first memory circuit (104) which reads out the stored video signal in response to a read clock different from the write clock and generated by a stable frequency source so that the image of the video signal is expanded in the vertical direction, a second memory circuit (105) which implements time-base compression for the output of the first memory circuit and thereafter expands the signal, a spatial filter (106) which implements filtering for the output of the second memory circuit, an enlargement control circuit (107) which control the above-mentioned circuits, and a synchronizing processing circuit (108). The circuit arrangement enables video signals of various image sizes, such as for movie pictures, to be displayed by signal conversion on a display unit with a 16:9 aspect ratio, and is capable of suppressing jitters of video signals.

公开(公告)号：EP0534220A2

公开(公告)日：1993-03-31

申请号：EP92115281.5

申请日：1992-09-07

申请人： HITACHI, LTD.

发明人： Katsumata, Kenji ,  Hirahata, Shigeru ,  Takata, Haruki ,  Konno, Mitsuo ,  Ishibashi, Kouichi ,  Kaizaki, Kazuhiro ,  Matono, Takaaki ,  Haratani, Atushi

IPC分类号： H04N5/262

CPC分类号： H04N7/0122 ,  G06T3/40 ,  H04N5/2628

摘要： A video signal processing circuit is provided to display an image of a standard television signal on a display unit with a 16:9 aspect ratio by enlarging an image of a video signal in the horizontal and vertical directions by a magnification factor which depends on the feature of the standard television signal. The processing circuit includes a first memory circuit (104) which reads out the stored video signal in response to a read clock different from the write clock and generated by a stable frequency source so that the image of the video signal is expanded in the vertical direction, a second memory circuit (105) which implements time-base compression for the output of the first memory circuit and thereafter expands the signal, a spatial filter (106) which implements filtering for the output of the second memory circuit, an enlargement control circuit (107) which control the above-mentioned circuits, and a synchronizing processing circuit (108). The circuit arrangement enables video signals of various image sizes, such as for movie pictures, to be displayed by signal conversion on a display unit with a 16:9 aspect ratio, and is capable of suppressing jitters of video signals.

摘要翻译： 提供一种视频信号处理电路，通过以水平和垂直方向放大视频信号的图像乘以取决于特征的放大系数，在具有16:9宽高比的显示单元上显示标准电视信号的图像 的标准电视信号。 处理电路包括第一存储器电路（104），其响应于与写入时钟不同的读取时钟读出存储的视频信号，并由稳定的频率源产生，使得视频信号的图像在垂直方向上扩展 ，第二存储器电路（105），其针对所述第一存储器电路的输出实现时基压缩，然后扩展所述信号;对所述第二存储器电路的输出进行滤波的空间滤波器（106）;放大控制电路 （107），以及同步处理电路（108）。 该电路装置能够通过在具有16:9宽高比的显示单元上进行信号转换来显示诸如电影图像的各种图像尺寸的视频信号，并且能够抑制视频信号的抖动。