Abstract: A telephone includes a body carrying an earpiece at one end and a flap at the other end integrating a microphone or reflecting sound towards a microphone. The flap can be foldable between a position to receive the sound of the voice and a folded position to reduce the overall size of the telephone when it is not in use or is on standby. The battery inserts in a cavity of a base of the flap so that when fitted it is integrated into the flap. Its use reduces the overall thickness of the telephone and makes it easier to handle.

Abstract: A method of delivering a telephone number associated with a telephone subscription to the user of a telephone set within the context of said subscription, use of said set requiring the user to provide subscription identification data stored in a data medium held by the owner of said subscription and co-operating with said telephone set. The telephone number is previously stored in the data medium and is transferred into the telephone set at the request of the user, to be delivered to the user of said set, in particular by displaying it on a screen. The invention is suitable for use in mobile telephony.

Abstract: A connection seeking device in a terminal of a mobile radio system seeks connection of the terminal to one network of a system which includes a plurality of networks. The system extends over a plurality of geographical entities each having at least one network. The terminal is affiliated to a home network belonging to a geographical entity of origin. The device seeks the connection to the home network when the terminal is connected to a network which does not belong to the geographical entity of origin.

Abstract: A source sequence including N data elements is interleaved to deliver an interleaved sequence according to a method which includes at least one interleaving step associating a data element of index j in the interleaved sequence with a data element of index i in the source sequence, where:j=(a.multidot.i+b) (modulo N)+1, 1.ltoreq.i.ltoreq.N and 1.ltoreq.j.ltoreq.N;a is a predetermined integer relatively prime with N and such that 2.ltoreq.a.ltoreq.N-1; andb is a predetermined integer such that 0.ltoreq.b.ltoreq.N-1.

Abstract: A method of setting the polarity of a digital signal coming from a first integrated circuit, said digital signal being representative of data generated within the integrated circuit and requiring application to an input of a second integrated circuit that requires a predetermined polarity. The method comprises storing the required polarity externally to said first integrated circuit at its digital signal output, an acquisition sequence for acquiring the stored polarity while the data is inactive, and an application sequence for applying the acquired polarity to the information when active in order to generate on an output of said first integrated circuit the digital signal for application to the input of said second integrated circuit. The method is applicable in digital systems that include integrated circuits that may come from different sources.

Abstract: A digital receiver includes an antenna for picking up signals, a converter for converting an incoming signal to a predetermined intermediate frequency, and baseband processor. The receiver further includes an analog/digital converter using oversampling relative to the bandwidth of the signal and receiving the intermediate frequency signal at its input, and decimation filters receiving the output signal from the analog/digital converter and having their outputs connected to the baseband processor.

Abstract: A portable mobile radio transceiver for direct communication with a radio relay on a satellite comprises a casing with a microphone and an earpiece and an antenna mounted on the casing. The main direction of radiation of the antenna is substantially vertical when the casing is in a position of use in which it is held in the hand near the head of the user.

Abstract: A radiotelephone has a housing for receiving an adaptor member for adapting an antenna plug to a socket. The adaptor member has an electrical connection and mechanical coupling end designed to cooperate with the antenna plug and an at least electrical connection arrangement adapted to cooperate with the socket. The socket comes into electrical contact with the connection arrangement purely by axial insertion of the adaptor member into the housing. The adaptor member is held in the housing by a manually operable holding device to provide an electrical connection between the antenna plug and the socket. The system may be used to connect any commercially available antenna to a specific radiotelephone and is compatible with a large number of antenna attachment/detachment maneuvers.

Abstract: A programmer produces binary output signals changing state during time intervals identified by a timing signal. Each output signal goes to the active or the inactive state, i.e. starts and ends during separate time intervals. The programmer includes a memory storing a start location and an end location for each output signal, respectively, holding the signal's start and end time intervals. The operation of a read unit for reading the values in these locations is determined by a control unit using an address generator so that the possibility of a change of state is examined for each output signal during each time interval. A comparator produces an identity signal if a first field of the read location has the same value as a first field of the time interval in which the reading takes place. A decoder changes the state of the output signal corresponding to the location for which the identity signal is produced.

Abstract: A base transceiver station of a GSM type cellular network exchanges data by radio with mobiles in a specific geographical area or main cell divided into a plurality of sectors each corresponding to a specific portion of the main cell and each associated with a receiver having a directional antenna. The base transceiver station includes a single transmitter having an omni-directional antenna and providing the transmit radio coverage of all the sectors so that the data transmitted by the base transceiver station in the form of radio signals to a mobile in any sector is transmitted by the transmitter.

Abstract: In a method for allocating a timeslot within a frame to a communication mobile entering a mobile radio system cell from a set of concentric cells around a basic cell managed by a base transceiver station the uplink temporal structure is offset relative to the downlink temporal structure by a time-delay equal to the sum of a basic offset between the basic downlink temporal structure and the basic uplink temporal structure of the basic cell and an offset time dependent on the rank of the cell within said set of cells.

Abstract: A mobile station of a mobile radio network includes speech exchange arrangements and data exchange arrangements. Selector arrangements select the speech exchange arrangements by default and change to the data exchange arrangements when necessary. The data exchange arrangements comprise a set of components for sorting, analyzing and processing the data and the commands exchanged between two terminal equipments so that a mobile terminal equipment capable of exchanging data according to a first standard (the V.24 standard+modem protocol, for example) can communicate with another, remote terminal equipment via a digital network using a second standard (V.110+GSM network, for example).

Abstract: The present invention relates to a device for correcting a frequency shift due to the Doppler effect in a transmission system. The device for correcting a frequency shift due to the Doppler effect is applicable to a transmission system in which a signal is transmitted in a transmission lobe between a transmitter and a receiver that are in relative motion. The frequency shift which is the difference between the frequency of the transmitted signal as measured at the receiver and as measured at the transmitter is presented as the sum of a center frequency characteristic of the transmission lobe plus a position frequency which is a function of the position of the receiver in the transmission lobe. The device includes means for tuning the receiver which has a tuning frequency such that said tuning frequency is equal to the sum of the transmitted frequency plus the center frequency.

Abstract: A device for seeking a connection between a terminal and a mobile radio system includes a synchronization unit for establishing in response to a control signal if the connection can be achieved and a time-delay unit for producing, after an initial period, the control signal after a first waiting period. The time-delay unit produces the control signal again after a second waiting period if it is established that the connection cannot be achieved after the first waiting period. The time-delay unit fixes the duration of the second waiting period so that it is greater than that of the first waiting period. If the device is implemented in a terminal having a battery whose capacity is represented by a capacity indicator, the time-delay unit fixes at least one of the waiting periods according to the capacity indicator.

Abstract: Resilient wipers (4a, 4b) cooperate with inclined planes (13a, 13b) to maintain the card (7) constantly parallel to the base part (1) of the card reader during the introduction of the card into the reading compartment (12). The free ends of the wipers (4a, 4b) are biased into a plane further from that of the base part (1) than that which the free ends of the reading wipers (3a, 3b) tend to assume. This device is simple and compact and makes it possible to eliminate static electricity created by the card rubbing against the card reader.

Abstract: A processor data memory address generator is adapted to receive a control word from a program controller receiving instructions from a program memory addressed by an instruction counter and producing a program signal addressed to an arithmetic and logic unit. The instruction counter is incremented by a clock signal and reset by the program controller. The control word comprises location information and selection information and the address generator is adapted to produce a data address having a first part comprising bits of said location information and a second part formed by a selected set of bits of the address of the current instruction identified by said selection information.

Abstract: A device for recovering an original bit stream from a received bit stream by processing the received bit stream in accordance with the Viterbi algorithm comprises an operator to establish the maximal metric of rank r of the state E.sub.j denoted Met.sub.r (E.sub.j) for r greater than n and the (r-n) th bit of the bit stream corresponding to the metric from input values which are maximal metrics of rank r-1 of states E.sub.2k and E.sub.2k+1 denoted Met.sub.r-1 (E.sub.2k) and Met.sub.r-1 (E.sub.2k+1) and the conditional probabilities related to the states E.sub.2k, E.sub.2k+1) that the r-th bit of the bit streams associated with these states has a determined value denoted (Pr(b(r)+0/E.sub.2k) and (Pr(b(r)=0/E.sub.2k+1) for example where k is equal to 2j for any value of j less than 2.sup.n-1 and has the value 2(j-2.sup.n-1) for any value of j greater than or equal to 2.sup.n-1, so that Met.sub.r (E.sub.j) takes the larger of the values of the expressions Met.sub.r (E.sub.j)+(Pr (b (r)=0/E.sub.2k) and Met.sub.

Abstract: A signal processing circuit for the European digital cellular radio system continuously exchanging speech samples with a converter circuit (AD), exchanging baseband digital signals with a radio circuit (R) and exchanging data and signalling information with a control circuit (C) which also transmit control signals to it.

Abstract: The present invention concerns an integrated circuit (1) comprising a standard cell (4), an application cell (2) and a test cell (3) designed in particular to store or to modify from outside the integrated circuit the value of communication signals passing between the standard cell and the application cell. The standard cell executing instructions provided on an instruction bus (3B4) by a program memory located in the application cell in response to an instruction address carried by an instruction address bus (3A4), the conductors of these buses constituting communication links. The integrated circuit further includes a branching circuit for replacing at least one erroneous instruction from the program memory with a replacement instruction previously stored in the integrated circuit in response to a predetermined state of the communication links.

Abstract: A data transfer interface module comprises a storage zone constituted by a plurality of locations referenced by addresses provided by an address generator and serving to acquire a set of data items constituting a block of a size that may be variable, which data items are stored successively in the plurality locations; a control signal COM via control circuit and an acquisition and recording circuit to enable address generation and also loading in the storage zone, the same control circuit in association with a read and transmission circuit then enabling the data to be transmitted, with the data items being extracted one by one from the locations, such that the first item to be transmitted is the last item to have been recorded; and a monitor circuit controlled by the address generator and serving to verify that the number Do of data items transmitted is equal to the number Di of data items acquired and to provide a status word ST which can be read to provide information about proper transmission.