| Patent Number |
Title Of Patent |
Date Issued |
| D393464 |
Interactive telephone apparatus |
April 14, 1998 |
|
| D390255 |
Type font |
February 3, 1998 |
|
| D385273 |
Cordless card reader |
October 21, 1997 |
|
| D380767 |
Type font |
July 8, 1997 |
|
| D340030 |
Distribution frame for coaxial communication cables |
October 5, 1993 |
|
| 6129341 |
Device for installing cables |
October 10, 2000 |
| The invention pertains to a method of installing cables (2) in cable ducts (6a, 6b, 6c) using installation devices (1) propelling the cables (2) into the ducts (6a, 6b, 6c). In accordance with the invention, the installation devices (1) are powered by means of pressurized fluid (f), such |
| 6073238 |
Method of securely loading commands in a smart card |
June 6, 2000 |
| A method of securely loading and validating commands (COM) in a smart card (SC) is disclosed. Especially in the case where application-specific commands are loaded by an application provider (AP), that is off-line with respect to the card issuer (CI), it must be ensured that the commands |
| 6042006 |
Authentication system wherein definition signals of two devices are altered, communicated betwee |
March 28, 2000 |
| An authentication system having a first device and a second device between which signals may be communicated. The first device includes a first memory for storing a definition signal and the first device generates a first signal to be communicated to the second device. The first device |
| 5960365 |
Simultaneous registration in multiple overlapping domains |
September 28, 1999 |
| System for mobile communication, comprising a mobile station (1) and a communication domain (A) comprising at least one base station, which communication domain (A) overlaps another communication domain (B) at least partially, a mobile station (1) being functionally divisible into a |
| 5907832 |
Method of debiting an electronic payment means |
May 25, 1999 |
| The invention provides a method for protectedly debiting an electronic payment mechanism, such as a telephone card. In the communication protocol between the payment mechanism and payment station, an authentication is used to identify the payment mechanism during various steps of the |
| 5897103 |
Method for installing cables |
April 27, 1999 |
| The invention pertains to a method of installing cables (2) in cable ducts (6a, 6b, 6c) using installation devices (1) propelling the cables (2) into the ducts (6a, 6b, 6c). In accordance with the invention, the installation devices (1) are powered by means of pressurized fluid (f), such |
| 5884161 |
Method for setting up a communication connection between a first party and a callable second par |
March 16, 1999 |
| The method for setting up a communication connection in a universal personal telecommunication (UPT) system between a first party and a second party who can be called, often by a wire-free system, offers the possibility of setting up the communication connection without an internal n |
| 5878181 |
Optical non-linear branching element |
March 2, 1999 |
| A low-loss optical 1.times.2 branching element comprises a symmetrical Y junction (4) with identical branches (4.1, 4.2) and an asymmetric Y junction (5) with different branches (5.1, 5.2). The Y junctions are coupled by means of a common trunk (6) in which two modes that are of uneq |
| 5856659 |
Method of securely modifying data on a smart card |
January 5, 1999 |
| A method of securely transferring data, such as program data, to a smart card (1) is disclosed. In order to be applicable in non-secure environments, the method of the invention involves a one-way authentication mechanism, comprising the use of a series of interrelated authentication |
| 5826175 |
Active tag having one diode for modulation and demodulation |
October 20, 1998 |
| Known tags which are capable of receiving and demodulating signals by way of one and the same antenna and by way of one and the same diode, as well as being capable of modulating and transmitting signals, often have a poor efficiency, particularly if the antenna is implemented in the for |
| 5818910 |
Telecommunication system, as well as a telecommunication exchange, as well as a method |
October 6, 1998 |
| Known telecommunication systems utilize of a telecommunication exchange with a switching matrix coupled to a storage device for storing a message. A calling subscriber dialing a certain telephone number will hear this message, whereafter he may be put through. An advertising subscriber |
| 5818540 |
Installation and method for freezing audiovisual datastreams |
October 6, 1998 |
| Installation and method for freezing audiovisual data streams, which installation comprises a video freeze control (2) which in equipped to receive a freeze command signal (FR) to be generated by a user and to detect a predetermined marker in a videosignal read from a memory (1), and |
| 5815918 |
Method for replacing an electrically conducting cable by another electrically conducting cable |
October 6, 1998 |
| Method for replacing a first cable (1) by a second cable (2) between a first predetermined point (1a) and a second predetermined point (1b), comprising:a. the provision of first series impedance means (S1) close to the first end (2a) and second series impedance means (S2) close to the se |
| 5815498 |
Transmission system for ATM cells through a passive local network |
September 29, 1998 |
| A transmission method for ATM cells presented by local stations to a central station, and for ATM cells presented by the central station to the local stations, wherein a cell destined for the central station is stored in a cell buffer of one of the local stations and a first character is |
| 5796950 |
Method of detecting service interactions in intelligent networks |
August 18, 1998 |
| The invention provides a method of detecting service interactions in intelligent networks. According to the invention, the detection method comprises a first stage in which services are formally specified and a second stage in which the thus specified services are checked for possible |
| 5774467 |
Method and device for transforming a series of data packets by means of data compression |
June 30, 1998 |
| The invention relates to a method and device for converting data packets by coding or compression, source data packets being converted into transmission data packets. In order to achieve an optimal degree of filling of the transmission data packets, a data field of a transmission dat |
| 5761353 |
Optical coupling device and optical switch for use in the coupling device |
June 2, 1998 |
| An optical coupling device for a node in a self-healing optical network, wherein the number of switching elements is reduced by using a novel type of optical 2.times.2-switch. The switch has two switching states: (i) a bar state (ss1) in which a first and a second main port are optically |
| 5745478 |
ATM policing device |
April 28, 1998 |
| An admission device for admitting data cells having VC codes, to a transmission medium, includes a device for reading out the VC code of an arriving data cell, a device for comparing a count value, which is a measure of the load of the data cell with the read out VC code, with a thre |
| 5740374 |
System for transferring messages via different sub-networks by converting control codes into ref |
April 14, 1998 |
| A transmission system for sub-networks having different transmission protocols. Control codes which are assigned to a message in a source sub-network are converted at the transition with a first intermediate sub-network, into reference codes which are compatible with a reference prot |
| 5739511 |
Method for effecting an electronic payment transaction having a variable number of payment units |
April 14, 1998 |
| The invention relates to a method for protected payment with electronic payment device, such as "intelligent" payment cards ("smart cards"), in a variable number of steps. In this connection, use is made of a non-reversible function, of which successive function values are provided b |
| 5727152 |
Interface arrangement, and telecommunication system, and method |
March 10, 1998 |
| Known interface arrangements for coupling a first arrangement based on a first protocol and a second arrangement based on a second protocol are not flexible. By providing a memory of the interface arrangement with at least a first memory field for storing second information elements and |
| 5724034 |
Device for establishing cell boundaries in a bit stream and CRC calculation |
March 3, 1998 |
| A device for establishing boundaries in a bit stream is disclosed, which converts a first number of bits of the bit stream into a second number of bits (that is, the CRC is determined) and compares the second number of bits with a third number of bits of the bit stream. The converting me |
| 5721747 |
Method and device for data transmission having improved error resilience with concomitant integr |
February 24, 1998 |
| The invention relates to a method for transmitting data in a processed manner on a communication channel, in which a first series (1) of data is converted into a second series (2) of data by means of a first operation (P), the second series (2) of data is transmitted on the communication |
| 5714741 |
Device for transparent interaction between an IC card and a remote terminal |
February 3, 1998 |
| The invention provides a device (1) for providing a transparent exchange of commands and data between an IC card (11) and a remote terminal (42) via a communication network (41). The device (1) acoustically couples the IC card (11) with a telephone set (43). In order to speed up the exch |
| 5708734 |
Polarisation-independent optical device |
January 13, 1998 |
| A polarisation-independent optical device for influencing the phase of an optical signal includes, in a light conductor (11), two identical adjustable phase shifters (14, 15), between which there is placed a polarisation converter (16). Optical signal components (I) entering at the i |
| 5708713 |
Method for monitoring a signal to be transmitted via at least one telecommunication link, a moni |
January 13, 1998 |
| Prior art methods used for monitoring, via monitoring means, signals which are to be transmitted via telecommunication links and with said signals each comprising a signalling signal and a content signal, require that the processing means which are required for monitoring are either situ |
| 5703977 |
Integrated optical mode converter |
December 30, 1997 |
| Integrated optical mode converter provided with a channel-shaped waveguide comprising a periodic concatenation of two wave-guiding subsections (P) and (Q) defined by a strip-shaped structure supported by a substrate. The waveguide profiles of the subsections (P) and (Q) are defined by tw |
| 5696856 |
Integrated optical polarisation splitter |
December 9, 1997 |
| An integrated optical polarisation splitter comprises a first waveguiding section (A) with a first guide (21), a second waveguiding section (C) with a second and a third optically decoupled and physically separated guides (24, and 25 or 28) and an intermediary section (B) for a coupling |
| 5691916 |
Method and device for calculating the quality of transmission media containing codecs |
November 25, 1997 |
| A method of calculating the transmission quality of a series of cascaded codecs, wherein for each type of codec, a function is determined which is specific for the relationship between the Q-equivalent over a series of codecs of that same type and the number of codecs which said series |
| 5687281 |
Bark amplitude component coder for a sampled analog signal and decoder for the coded signal |
November 11, 1997 |
| A sampled analog signal is filtered by a short-term prediction filter. The result, a segmented residual signal, is transformed from a time domain to a frequency domain into several frequency components, each having a frequency-component amplitude. If a number of new amplitudes is calcula |
| 5682377 |
Transmission system for data cells in a local network |
October 28, 1997 |
| In a transmission system for the transmission of data cells between local stations and a central station, cell arrivals are registered in a local register (CAR). Those registrations are periodically transmitted to the central station. The central station thereafter transmits the permit c |
| 5681417 |
Method and device for stripping optical fibre ribbons |
October 28, 1997 |
| For removing coating material from an end (5) of a fiber ribbon (1) over a length L, while using a chemical softening agent, the end is received and clamped between clamping parts (9, 35) of a holder. The clamping parts form a casing wall of a space in which the fiber ribbon with the end |
| 5680236 |
Integrated optical wavelength demultiplexer |
October 21, 1997 |
| An optical wavelength demultiplexer comprises a monomodal incoming waveguide (1) for an incoming optical signal (S(.lambda..sub.1, .lambda..sub.2, .lambda..sub.3, .lambda..sub.4)) being propagated in fundamental guided modes having different polarisations (TE and TM), a conversion de |
| 5655021 |
Method for checking data sequences |
August 5, 1997 |
| The invention relates to a method for checking data sequences, comprising a protection step and a verification step, with a control sequence being formed in the protection step on the basis of an identification sequence, which identification sequence comprises identification values which |
| 5639183 |
Installing cable-ducts |
June 17, 1997 |
| A method for installing a tubular cable-duct around a cable buried in the ground includes steps of freeing a portion of the buried cable from the ground in a forward longitudinal direction of the cable, starting from a free end of the buried cable, and advancing a foremost end of the |
| 5636268 |
Communication system with queues |
June 3, 1997 |
| The invention relates to a communication system comprising a first network, a second network, first stations coupled to the first network and second stations coupled to the second network, with the first network and the second network being mutually coupled. The system comprises queuing |
| 5635695 |
Chip card based payment system having an on-card flag for specifying proper completion of a prio |
June 3, 1997 |
| Improved integrity of a payment system for paying for services or goods, for example, telephone facilities, through use of electronic payment cards. In any session to increase a card balance, a "flag" is placed ("1") on the payment card which indicates that the session must not be in |
| 5596321 |
System comprising a first encoder for coding a first digital signal, a second encoder for coding |
January 21, 1997 |
| Known systems based on stereoscopic video coding and video decoding code with inadequate efficiency because the left-hand picture and the right-hand picture are coded and decoded independently of one another by means of the encoders present in the system. As a result of providing one |
| 5588089 |
Bark amplitude component coder for a sampled analog signal and decoder for the coded signal |
December 24, 1996 |
| In a speech coder, a sampled analog signal is filtered by a short-term prediction filter. The result, a segmented residual signal, is transformed from a time domain to a frequency domain into several frequency components, each having a frequency-component amplitude. If a number of ne |
| 5581546 |
Apparatus for monitoring an ATM system |
December 3, 1996 |
| Apparatus for monitoring a flow of ATM cells in which a measured value is calculated in all cases. A `leaky bucket` mechanism known for this purpose has too few degrees of freedom to be able to monitor the flow of cells accurately enough for it to be possible to deduce from cell flow |
| 5574808 |
Optical switching device |
November 12, 1996 |
| An integrated optical switching device for switchably converting a fraction of a first guided mode signal into a second guided mode signal of different order is provided. Added to a passive mode converter (c) provided with a bimodal waveguide, in which the conversion can take place b |
| 5539845 |
Integrated optical polarization converter with enhanced periodic coupling and method of fabricat |
July 23, 1996 |
| Integrated optical polarization converter provided with a channel-type waveguide (B) defined by a strip-type structure (S.sub.4) supported by a substrate (S) and having a periodic concatenation of two different part strips having side walls which are at different angles with the plane of |
| 5528708 |
Method and appertaining pair of mask patterns for fabricating, with the application of double ma |
June 18, 1996 |
| An alignment-tolerant fabrication of a waveguide structure having a symmetrical component structure and an asymmetrical component structure such as an asymmetrical X junction, with the aid of the technique of double masking is presented. The entire waveguide structure is defined by t |
| 5528629 |
Method and device for coding an analog signal having a repetitive nature utilizing over sampling |
June 18, 1996 |
| Speech signals coded according to the principle of high-resolution long-term prediction (HLTP) have a high accuracy due to the high-resolution which causes a high complexity. The ordinary LTP method is improved by use of oversampling and determining subsegments Cd lying in a precedin |
| 5510787 |
System comprising at least one encoder for coding a digital signal and at least one decoder for |
April 23, 1996 |
| Known systems based on layered coding and decoding do not take account of the greater surface area of an HDTV picture, which is to be coded with high resolution, compared with the smaller surface area of a conventional picture, to be derived therefrom, which is to be coded with low r |
