Abstract: An electronic circuit is disclosed, of the kind used in simulated television games, in which the positions of certain symbols representing objects necessary to the performance of a game, such as the pads and the ball for simulating a table tennis or lawn tennis game, are governed by the players through the manipulation of circuit controlling knobs, the improvement consisting in that supplementary circuit means are provided to render the display of the positions of certain symbols more accurate and detailed. For example, it is possible, by adopting the supplementary circuit means of the invention, to display not only the position of a table tennis ball relative to the pads and the game field, but also to simulate certain refinements of the game, in the case in point, to simulate spin strikes impressed to the ball, smash strikes and the like. The improvement also involves a more realistic acoustical simulation of the strikes imparted by a pad to the ball.

Abstract: To enable a TV set to be used for the so-called TV-games, that is the visualization of the several phases of a game, the improvement consists in providing a bistable switching means which, when it is in a first of two positions, enables the TV set to operate as usual for receiving and processing the antenna picked up signals, whereas, when the bistable switching means is in its other position, the tuning stage of the TV set is not fed and does not process the antenna signals, whereas the signal generator which provides the signals required for carrying out the TV game is now fed and, therewith, also the other circuits which are necessary to execute the audio and video functions. The circuitry portion relating to the TV game can be provided as a single, self-contained unit and provisions can be made for having it united into a module and the latter can be inserted into, or removed from, the TV set.