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专利名称：Display system allowing overlay of graphics
over alphanumeric characters
发明人：RYON, DAVID,DANNEVILLE,
BERNARD,BOURSIER, ALAIN
申请号：EP98200147.1申请日：19980120公开号：EP0855694A1公开日：19980729
专利附图：
摘要：The device (1) includes an LCD type screen (2) with an input (5) for informationto be displayed. The display information is provided by a control circuit (8) which
processes information held in a memory (10) for alphanumeric characters or semi-graphics with limited gradations of grey scale. The information contained in the memory(10) comes from an access (12). A reading counter (16) takes this information for supplyto the control circuit. In order to be able to superimpose graphics on the alphanumericcharacters, a graphic memory (20) is provided which holds all the pixels of the image tobe displayed on the screen. A comparator (26) determines the choice of information tobe viewed on the screen (2) by operating a switch (28). The choice is determined by aparticular value stored in the memory (20) which is scanned in sync. with the screenscanning process.
申请人：KONINKLIJKE PHILIPS ELECTRONICS N.V.
地址：Groenewoudseweg 1 5621 BA Eindhoven NL
国籍：NL
代理机构：Chaffraix, Jean
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