Alcatel

Alcatel Lucent

Luc Attimont

Jannick Bodin

Raymond Gass

Gérard Vergnaud

Jean-Claude Laville

G&eacute;rard Vergnaud

Modeste Addra

Emile Sarrazin

A method for sending a remote power feed to a terminal in a local area network. A repeater of the local area network produces adetectiontestsignal in a line to which a remote terminal is connected, and the signal has an energy level that will not damage the terminal. The presence of a remote terminal adapted to receive a remote power feed via the repeater is detected by detecting the presence of a predetermined impedance in the terminal, and power is supplied to the terminal via the repeater in response to detection of the presence of the terminal.

Method of providing a remote power feed to a terminal in a local area network, and corresponding remote power feed unit, concentrator, repeator, and terminal

A method of connecting to a radiocommunication network a terminal which is in a standby mode because of temporary unavailability of the signal from the network includes a step of periodically scanning frequencies of the radiocommunication network using one or more sequences each associated with a predetermined list of frequencies selected from all the frequencies.

Method of reconnecting radiocommunication terminal to a network, and a corresponding terminal

The invention relates to a method to ensure the quality of preferred (communications) services, especially voice services, in a local data network with different types of services, where data congestion or data collision on a shared transmission medium is treated by a collision detection method and by application of re-transmission rules after detection of data collisions, wherein depending on the type of service, the corresponding data packets are subject to different re-transmission rules and wherein the different re-transmission rules each define a set of different parameters for an algorithm to randomly calculate the backoff time, that a station has to wait after a collision detection, before it re-transmits a data packet affected by the collision, the different sets of parameters comprising each at least the mean of said backoff time, as well as to a local network, a station, a local network controller and a program module therefor.

Method to ensure the quality of preferred communication services, a local network, a station, a local network controller and a program module therefor

A method of improving sound playback of digitized speech signals transmitted to a telecommunications terminal at the beginning of a telephone call set up over a communications network where the signals are transmitted in the form of packets, and in particular at the beginning of a VOIP call set up under Internet protocol, at the time said call is set up from a sending telecommunications terminal fitted with voice activity detection means so as to be capable of transmitting only those digitized signal packets that contain speech taken from a set of sound signals that are suitable for being transmitted in the form of packets after the sound has been digitized and encoded in the sending terminal. Signal packets are transmitted from the digitizing and encoding means during an initial call optimization stage without taking account of whether or not any speech signals are present. The invention also provides telecommunications hardware implementing the method.

Method of facilitating the playback of speech signals transmitted at the beginning of a telephone call established over a packet exchange network, and hardware for implementing the method

The invention relates to a method of executing a real-time task by a digital signal processor using a cache memory, an overall duration being allocated for executing said task and any interrupts coming from peripherals associated with the processor, wherein the overall duration is subdivided into a plurality of time intervals comprising at least one masked period during which said task is executed and interrupts are made to wait and are grouped together, and at least one non-masked period during which said task is suspended and the group of interrupts is executed. The masked periods and the non-masked periods are defined by a hardware mechanism including a timer.

Method of performing a task in real time by a digital signal processor

The invention relates to a mobile radio terminal including an audio transducer ( ) an outlet ( ) of which is oriented towards the front face of the terminal and provides earpiece, loudspeaker and ringer functions, the terminal further including, coupled to the transducer, means (R ) for adjusting the level of the sound wave emitted by the transducer in a main direction (D) substantially perpendicular to the front face, the adjustment being effected regardless of the position of the terminal relative to a user.

Radio telecommunication terminal

A method of controlling a liquid crystal display, the method being of the type requiring refreshment of the displayed information in successive stages, a refresh stage having the following steps: executing at least one request to access a shared memory, so as to collect therefrom information to be displayed; and activating display control members so that the control members perform a refresh operation on the basis of the collected information to be displayed. When, for a refresh stage, the information to be displayed is not available quickly enough, the method performs the following steps: interrupting the access request; and going to a next refresh stage by omitting the activation of the current stage.

Method of controlling a liquid crystal display

The invention relates to a radiocommunications terminal comprising a housing having a front face, a back face, and a base, the terminal further comprising a microphone and an earpiece mounted inside the housing, and being provided with at least one input opening constituting an input interface with the microphone, and at least one output opening constituting an output interface with the earpiece, the input opening being on said back face.

Radiocommunications terminal

Electronic evaluation device provided within an electronic circuit so as to deliver an indication of the operating conditions of the electronic circuit, which indication is used to adjust the power supply voltage to a minimum value at which the electronic circuit can still operate correctly.

Optimized power supply system for an electronic circuit

A portable electronic apparatus suitable for being electrically powered by various types of batteries includes a circuit which identifies the type of battery that is connected to it, and a discharge control circuit which controls discharging of the battery, the discharge control circuit including a comparator circuit which compares the output voltage of the battery with a minimum threshold voltage, a current-determining circuit which determines a value representative of the output current of the battery, an adapter circuit which adapts the minimum threshold voltage as a function of the identified battery type and of the value representative of the output current; a disconnect/stop circuit which stops the electronic apparatus from being powered when the output voltage of the battery becomes lower than the minimum threshold voltage delivered by the adapter circuit.

Portable electronic apparatus with a circuit for controlling discharging

A power supply circuit for a power amplifier of a mobile radio communication terminal, the power amplifier being suitable for delivering transmitter power that can present variations that are relatively fast and variations that are relatively slow, the power supply circuit essentially comprising:

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Saint Germain-en-Laye, France

Luc Attimont