METHOD OF DETERMINING AN UNUSUAL BEHAVIOUR OF AN ELECTRONIC APPARATUS, AND ELECTRONIC APPARATUS ABLE TO IMPLEMENT SUCH A METHOD

摘要

Method of determining an unusual behaviour of an electronic apparatus, and electronic apparatus able to implement such a method. The present invention pertains essentially to a method of determining an unusual behaviour of an electronic apparatus, said electronic apparatus carrying out an operation requiring the use of an item of information regarding an internal reference clock (108) of said electronic apparatus (100), characterized in that it comprises the various steps consisting in: comparing the internal reference clock information item with a span of temporal coherence (300) of the electronic apparatus (100), said span of temporal coherence being determined on the basis of various temporal information items stored (li) within the electronic apparatus; in the case of inconsistency between the internal reference clock information item and the coherence span, storing an information item relating to an unusual behaviour of said electronic apparatus. The method according to the invention is for example implemented within a digital television decoder.