the present invention pertains to an apparatus and method, in conjunction with standard monochrome and color television receivers, for the generation, display, manipulation, and use of symbols or geometric figures upon the screen of the television receivers for the purpose of training simulation, for playing games, and for engaging in other activities by one or more participants.G06F3/03542- Light pens for emitting or receiving light.mice, trackballs, pens or joysticks Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. G06F3/0354- Pointing devices displaced or positioned by the user, e.g.mice, trackballs, pens or joysticks Accessories therefor G06F3/033- Pointing devices displaced or positioned by the user, e.g.G06F3/03- Arrangements for converting the position or the displacement of a member into a coded form.G06F3/01- Input arrangements or combined input and output arrangements for interaction between user and computer. G06F3/00- Input arrangements for transferring data to be processed into a form capable of being handled by the computer Output arrangements for transferring data from processing unit to output unit, e.g.
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