Abstract: The present invention relates to a method of processing voice signals (320, 322, 324) for a communication terminal (300) using voice recognition means comparing those voice signals to data stored in a database (304) in order to identify the data corresponding to those signals, that identified data being transmitted to management means (312) for triggering an action. According to the invention, such a method is characterized in that, the voice signals being liable to be supplied different sound acquisition systems (305, 307, 309), separate voice recognition means are used for each acquisition system.

Abstract: To address the problem of aging and drift of a local oscillator in a mobile telephone the frequency Fi of the local oscillator is shifted upwards so that base station logging-on FCH signals are measured perfectly whether said drift is upwards or downwards. It is shown that the actual drift resulting from the initial shift and drift with time can be measured during logging on. It is shown that conforming to the standard is facilitated without having to provide an oscillator whose frequency stability with time is guaranteed.

Abstract: Problems of noise emission during transmission in successive time slots (A-B) in mobile telephony are solved by causing the transmitted power to change in a monotonic manner from a previous value to a new value. It is shown that this increases the transmission bit rate.

Abstract: Method and system for processing multicarrier radio communications applications, particularly in Global System for Mobile Communication (GSM). The invention is characterized by the transposition of a multicarrier spectrum (S) in a base-band, and the processing of each carrier (12; 14) independently using one single RF phase-locked loop (35) common in the present single-carrier terminals. According to an embodiment of the invention, the processing of each carrier independently comprises the transposition of each carrier (12; 14) in base band using the 200 kHz clock (36) generated by the RF PLL of a mobile phone set.

Abstract: To save energy and to increase the standby time and talk time of a mobile telephone, the activity of the mobile telephone is segmented, even during standby periods, and activation is allowed to occur only if the reception quality of signaling surrounding the standby condition is sufficient. When the mobile telephone is on standby, given the redundancy of the activation signaling, only some of the signals are listened to in order to decide whether it is necessary to listen to the others and to activate the mobile telephone. When the mobile telephone is communicating and the other party is silent, the energy consumed in receiving and above all in decoding the received signals is reduced by eliminating demodulated signals of too poor quality.

Abstract: Method and system for processing of digital radio channels in multicarrier radio communications applications, particularly in Global System for Mobile Communication (GSM). The invention is characterized in the transposition of a multicarrier spectrum (S) in a base-band, and the processing of each carrier (11; 12) independently. According to an embodiment of the invention, the processing of each carrier (11; 12) independently comprises the transposition of each carrier in base band; base band filtering and normal DSP operations.