Mobile radio device with stop-watch function has control signal for stop-watch obtained from information signal transmitted between 2 mobile radio devices

摘要

The mobile radio device (1) has a transmitter (3) for transmitting data to a second mobile radio device (2), an input/output device (4) for speech communications, a push-button field (5) for information input and a stop-watch (7), controlled by a filter (6) detecting a stop-watch control signal in the transmitted information signal. The stop-watch may be coupled to an acoustic and/or optical display (8). An Independent claim for a time interval measuring method using 2 mobile radio devices is also included.