公开(公告)号：EP0272893A3

公开(公告)日：1990-07-18

申请号：EP87311189.2

申请日：1987-12-18

申请人： THORN EMI plc

发明人： Plumbley, Mark David

IPC分类号： H04N3/16 ,  H04N5/44

CPC分类号： H04N5/44

摘要： Display apparatus which includes a cathode ray tube. Electrical signals carrying information indicative of visual images are conveyed to an electrode in the tube and an electron beam is modulated in response to the signal and scans the screen in line and field directions to generate visual images. The line scan causes the beam to move alternately in the forward sweep (display) and flyback directions and the apparatus is arranged to cause the ratio of blanking period to display period to be greater than conventional values, i.e. at least 23.08%. Increasing blanking time and hence available flyback time over conventional values allows display improvement techniques, such as increasing field rate or number of lines per field, to be used without requiring, for example, line output transistors with higher voltage ratings.

摘要翻译： 包括阴极射线管的显示设备。 携带指示视觉图像的信息的电信号被传送到管中的电极，并且电子束响应于该信号而被调制，并且在线和场方向上扫描屏幕以生成视觉图像。 行扫描使光束以前向扫描（显示）和回扫方向交替移动，并且该装置被设置为使消隐周期与显示周期的比率大于常规值，即至少23.08％。 与常规值相比，增加消隐时间和因此可用的反激时间允许使用显示改进技术，例如增加场频或每场的线数，而不需要例如具有较高电压额定值的线输出晶体管。

公开(公告)号：EP0272893A2

公开(公告)日：1988-06-29

申请号：EP87311189.2

申请日：1987-12-18

申请人： THORN EMI plc

发明人： Plumbley, Mark David

IPC分类号： H04N3/16 ,  H04N5/44

CPC分类号： H04N5/44

摘要： Display apparatus which includes a cathode ray tube. Electrical signals carrying information indicative of visual images are conveyed to an electrode in the tube and an electron beam is modulated in response to the signal and scans the screen in line and field directions to generate visual images. The line scan causes the beam to move alternately in the forward sweep (display) and flyback directions and the apparatus is arranged to cause the ratio of blanking period to display period to be greater than conventional values, i.e. at least 23.08%. Increasing blanking time and hence available flyback time over conventional values allows display improvement techniques, such as increasing field rate or number of lines per field, to be used without requiring, for example, line output transistors with higher voltage ratings.

摘要翻译： 包括阴极射线管的显示装置。 携带指示视觉图像的信息的电信号被传送到管中的电极，并且响应于信号调制电子束并且沿着线和场方向扫描屏幕以产生视觉图像。 线扫描使得光束在正向扫描（显示）和反激方向上交替移动，并且该设备被布置成使得消隐周期的显示周期的比率大于常规值，即至少23.08％。 增加消隐时间，因此与常规值相比可获得的回扫时间允许使用显示改进技术，例如增加现场速率或每个场的行数，而不需要例如具有较高额定电压的线路输出晶体管。