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21. 发明专利

DE69020813T2 未知
公开(公告)号：DE69020813T2
公开(公告)日：1995-12-07
申请号：DE69020813
申请日：1990-06-11
申请人： ALCATEL BUSINESS SYSTEMS
发明人： LANDEZ JEAN-PIERRE , BOULLET MARC
IPC分类号： H04L12/64
摘要： This arbitration method for send mode access to the synchronous transmission medium of a distributed switching network is applied to a network architectured around a transmission medium shared over time between various stations, and in which the said medium is structured into repetitive time positions, and in which, an ideal time position for access having been assigned, according to specified access criteria, respectively to the various stations communicating inside this network, overflows of the said stations from the ideal time positions thus assigned are authorised. This arbitration method enables an increasing priority of access to be obtained in respect of an increasing backlog of traffic due to these overflows.

24. 发明专利

FR2716598A1 Converter for fluorescent tubes in telephonic equipment 未知
公开(公告)号：FR2716598A1
公开(公告)日：1995-08-25
申请号：FR9401877
申请日：1994-02-18
申请人： ALCATEL BUSINESS SYSTEMS
发明人： PHILIPPE BITSCH , FREDERIC ANGOT
IPC分类号： H05B41/282 , H05B41/392 , H05B41/29
摘要： The converter (2') is of the auto oscillating type having a transformer (5) whose secondary (S) supplies a fluorescent tube (1) through a capacitor (10). The supplied direct voltage (V+) is connected to the centre point of two primary windings (P1,P2). The outer terminals of the primary windings are connected to a capacitor (9) and to two transistors (6,7) in series whose bases are in series with a counterreaction transformer winding (CR). A comparator (16) compares the transformer voltage (E1) with a threshold (E2) and switches the inductance (8) by a transistor (17) to control the output voltage to the tube (1).

27. 发明专利

DE69017527T2 未知
公开(公告)号：DE69017527T2
公开(公告)日：1995-07-06
申请号：DE69017527
申请日：1990-06-11
申请人： ALCATEL BUSINESS SYSTEMS
发明人： ROUX RAPHAEL , WU JI-YONG
IPC分类号： H04L12/64
摘要： Method for access control to the transmission medium of a distributed multiservice switching network able to switch traffic into synchronous circuit mode and into synchronous or asynchronous packet mode, said network being architectured around a transmission medium shared over time between various stations, characterised in that:… - the transmission medium is synchronous and structured into repetitive frames, themselves structured into timing intervals themselves structured into time-cells, the latter being dimensioned to contain a communication entity which may be, as appropriate, a cell in circuit mode or a cell in segmented packet mode,… - an ideal time interval for access to the transmission medium in packet mode is assigned respectively to the various stations communicating inside this network,… - with each time-cell and for all the stations, there is undertaken an arbitration of access to the transmission medium, so as to ensure priority access to this medium by cells in circuit mode which are available at this instant in every station. … …

28. 发明专利

FR2714561A1 Telephone line current control for accessory circuit e.g. hearing aid 未知
公开(公告)号：FR2714561A1
公开(公告)日：1995-06-30
申请号：FR9315693
申请日：1993-12-27
申请人： ALCATEL BUSINESS SYSTEMS
发明人： CLAUDE MALAURIE , MICHEL DEJEAN
IPC分类号： H04M19/08 , H04M19/00
摘要： The control includes the telephone line input which is passed to a balanced transistor pair (10,14). The transistors have a resistor (9) connected to earth which detects the amount of current supplied to the accessory.The balanced power circuit controls an image current circuit, with two further balanced transistors (17,19) and balancing resistors (15,16,18,21). The control current is then fed via a transistor (23) and resistor (24) to the accessory. Current supply is generated as a function of a fixed line current threshold, allowing the current level to be adjusted to the required level without affecting the input circuit.

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