Dual mouse peripheral manual input interface to computer e.g. for multiple-player video game

摘要

Two connections (10, 11) from input devices are linked to separately-controllable blocking AND-gates (7, 8) opened and closed by logic comprising other AND-gates (4, 5) and a set-reset flip-flop (6). Retriggerable monostables (1, 2) supply the second input to each AND gate from the other source, in one instance via a priority switch (3). The outputs from the blocking devices are OR-gated (9) so that the cursor control (12) for the computer is assigned to whichever input device has the higher priority. The lower-priority device has opportunity to take over the control when a sufficiently long pause, exceeding half a second, occurs in the signal from the higher-priority device.