Communications system for recording votes and opinions at separate but adjacent meetings, comprises handsets which are initially mutually identified with a particular control station

摘要

Each hand set (101) has numeric, validation and correction buttons (102, 103,108), a screen (105), a memory card (107), a buzzer (106) and a strength of opinion indicator (104). The handsets and their controlling station are initially coded to recognize each other only and the risk of interference from an adjacent meeting with similar equipment is further reduced by using different carrier frequencies and time slices