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Eads Defence and Security Networks

City: Montigny-le-Bretonneux
FR

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US7286523 - Terminal supervising device -  10/23/2007 
A proxy server is used to provide various services managed by a plurality of dedicated servers to subscribers using terminals connected to a communication network. The proxy device has a three-tier type of architecture, with a stage for presenting services to terminals through the network, a service multiplexing stage communicating with the presentation stage, and a service access stage communicating with the multiplexing stage and including a plurality of access modules each associated with a respective dedicated server. The various services managed by the dedicated servers are multiplexed by the central stage which holds sessions with the subscribers without requiring a particular awareness of the services managed by the dedicated servers, nor of the physical features of the terminals.
US6560715 - Sequencer of synchronous actions in a processor system, and integrated circuit including such sequencer -  05/06/2003 
For triggering actions synchronous with a system clock in an electronic system comprising a management processor, a program memory and peripheral units, the sequencer comprises: an instruction register including a date field for containing an instruction execution date, an instruction code field and a data field, means for loading the instruction register from the program memory via a DMA channel, a comparator receiving a current date obtained from the system clock and the execution date contained in the date field of the instruction register, and a control logic unit for decoding the contents of the instruction code and data fields of the instruction register and triggering actions deduced from such decoding at the time the comparator shows that the current date has reached the execution date in the peripheral units and without intervention by the management processor.
US6483827 - Dect-based radio station -  11/19/2002 
The radio station has DECT circuitry for processing one or more bit streams to be transmitted over a communication channel divided into successive 10 ms radio frames each having a plurality of timeslots, each bit stream being allocated one of the timeslots in each frame. The DECT circuitry extracts bit sequences from each bit stream and modulates each of the bit sequences to form a respective radio signal burst inserted into a timeslot allocated to the bit stream in accordance with DECT formats. A clock generator, including a crystal oscillator and frequency dividers, produces a first clock signal having a frequency adapted for set the bit rate of each bit stream to 32 kbit/s, and a second clock signal having a frequency adapted for setting the bit rate within each bit sequence to 1.024 kbit/s, whereby the DECT formats remain valid while the channel has a reduced spectra bandwidth.
US6459742 - Digital modulation process and modulator implementing the process -  10/01/2002 
The successive symbols of a digital stream are converted into phase increments which are accumulated. A modulating phase is obtained by filtering the accumulated phase. A complex signal is produced whose argument represents the modulating phase. Two quadrature radio waveforms are respectively modulated on the basis of that complex signal, and a radio signal resulting from a combination of the two modulated waveforms is transmitted. The complex signal may be filtered digitally. Its real and imaginary components are converted into analog form, and are subjected to anti-aliasing analog filtering and then mixed with the two radio waveforms. Appropriate sizing of the digital filters provides efficient modulation with small envelope variations, causing little adjacent channel interference and a low error rate.

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