The process involves updating a reference pressure value (Pref) based on ambient pressure measurement, where the value is used to detect the beginning of a dive. The value stored before being updated is saved as a protection value (Psauv) of the value (Pre...

Portable device, e.g. a diver's or waterproof watch (1), has a plurality of capacitive sensors for detecting the presence of water around the watch. The watch also has a pressure sensor and means for measuring and monitoring the capacitance of the capacita...

A diving computer provides not only a digital, but also a graphic display of depth for a safety stop and a decompression stop, thereby providing a safe diving watch enabling prompting of a diver for simple maintenance of depth, and has a timekeeping means ...