ELECTRONIC WATCH CONTAINING CAPACITY KEY ON CRYSTAL

摘要

PROBLEM TO BE SOLVED: To use the same electronic means for detecting the position of a hand or a plurality of hands and detecting the existence of a finger on a key. SOLUTION: This watch comprises a circular series of capacity keys which are arranged on the inner surface of a crystal (5) of the watch and demarcated by transparent electrodes (21 to 32) connected with a detector device by way of a multiplexer. These keys function when the user of the watch puts a finger (38) on the crystal facing one of the electrodes. This watch also includes a means for detecting the positions of at least one hand (8, 9) with the same detector by using the electrodes (21 to 32) of the capacity keys and/or other fixed electrode (51).