A method for capturing an image with an electronic handheld device (1) equipped with a camera unit (2) and capture means (3) for triggering an image capture, said electronic handheld device (1) further comprising power supplying means (4) connected to said camera unit, and at least one additional component (5) also connected to said power supplying means (4) through a DC/DC converter (11), said method comprising a first step (B) for detecting actuation of capture means (3), and a second step (C) for capturing image once actuation of capture means has been detected. According to the invention, said method further comprises an intermediate step (D) for switching said DC/DC converter (11) off for at least the duration of the second step (C).

A method for synchronizing a number R greater than or equal to 1 of multimedia peripherals (6) of a portable communication device with an audio file (1), comprising the steps of extracting a number P greater than or equal to 1 of basic synchronization signals (SYNC.sub.i) according to a first set of parameters (20); generating, from said P basic synchronization signals, a number Q greater than or equal to 1 of synchronization command signals (COM.sub.k) according to a second set of parameters (30) defining rules to convert basic synchronization signals into signals adapted to the type of peripheral to be synchronized; and selecting, among said Q synchronization command signals, R synchronization signals (P.sub.SYNCk) for controlling R peripheral drivers (5) driving said R multimedia peripherals (40), according to a third set of parameters (40).