System with infrared transmission and reception for counting, allocating and displaying the points in a match, especially a tennis match, between two teams on a sports court

摘要

The invention relates to an electronic system for displaying the score of tennis matches between at least two teams and comprising: at least one transmitter available to one of the players of at least one of the said two teams, a fixed receiver placed at a point directly adjoining the court; the said electronic system being characterised in that its transmitter is of the infrared type, that is to say that the spectrum of wavelengths of its said transmission member 40, 41, 42 is situated between 7,600 and 500,000 angstroms. <IMAGE>