Patent ID: 7448552

Claim:
A portable electronic object including (a) a first user interface; (b) at least one second user interface; (c) a management unit for said user interfaces including first and at least second processing means respectively associated with said first and at least second user interfaces; (d) means for measuring at least one external parameter linked to at least one of said user interfaces, said measuring means being connected to said management unit; (e) comparison means for comparing a level of said measured external parameter to a predefined level of said external parameter; and (f) control means arranged for activating or deactivating said processing means associated with said user interface linked to the measured external parameter as a function of a result of the comparison, wherein the portable electronic object further comprises: (g) means for selecting a user interface from among said user interfaces having associated processing means that are not deactivated, in accordance with a determined criterion, wherein said first user interface includes sound signal reception means, said first associated processing means being sound signal processing means, said second user interface includes control members and display means, said second associated processing means being control member processing means, said measuring means include an ambient noise sensor for measuring an ambient noise level, said management unit also including first comparison means for comparing said ambient noise level to a predefined noise level, said control means being arranged for deactivating the sound signal processing means when the ambient noise level exceeds the predefined noise level, wherein the measuring means further comprise a light sensor for measuring a received light level, said management unit also including second comparison means for comparing said received light level to a predefined light level, said control means also being arranged for deactivating said control member processing means when the received light level passes below the predefined light level, wherein said control members are a tactile crystal including at least two electrodes, wherein said portable object also includes (h) means for detecting activation of each of said at least two electrodes, said detection means being connected to said management unit; and wherein said control means are also arranged for deactivating said control member processing means when simultaneous activation of said at least two electrodes is detected.