公开(公告)号：EP0746946B1

公开(公告)日：2001-06-13

申请号：EP95936066.0

申请日：1995-11-21

申请人： Koninklijke Philips Electronics N.V.

发明人： VIS, Petrus, Nicolaas, Joseph ,  KEMNER, Rudolf ,  MONTIE, Edwin, André ,  KETTING, Alfred ,  HOEVEN, Adriaan, Johannes

IPC分类号： H04N9/16

CPC分类号： H04N9/16

摘要： The phosphor screen (4) in a display device in accordance with the invention is scanned by means of separate electron beams (23, 24) in order to generate images of different frequency content in one colour in substantially the same part of a phosphor screen (4). The different images can be perceived as a composite image for some time. The individual electron beams can be modulated by means of a cathode modulator (5) on the basis of a high frequency and a low frequency component of an electronic image signal or on the basis of an image component and a text component of an electronic image signal. The modulations of the individual electron beams may be slightly delayed relative to one another in order to avoid overloading of the phosphor material.