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| Number | Title | Issue Date |
| 4962499 | Switching system for switching packet oriented data as well as circuit oriented data Two separate switching systems, a first one for switching packet oriented data and a second one for switching circuit oriented data as known from the state of the art can, according to the invention and with regard to their function, be integrated into a ... | 10/09/1990 |
| 4953158 | Switch system for circuit and/or packet-switched communications A switch system for circuit and/or packet-switched communications comprising a central controller; a clock signal source; a pair of serial memories and a series of consecutive access units each of which being linked on the one hand with an associated subs... | 08/28/1990 |
| 4937814 | Junction switch for packet switching The invention relates to a switching module for asynchronous time multiplex comprising at least one junction switch for transmitting packet-switched information from one bus (14) to another bus (16). The junction switch comprises a translation memory (9) ... | 06/26/1990 |
| 4920322 | Voltage controlled r-c oscillator and phase locked loop A voltage controlled oscillator (VCO) comprises the series arrangement of two signal inverters whose outputs are coupled to the input of the first signal inverter through a feedback loop, and a control circuit including a series arrangement of two diodes ... | 04/24/1990 |
| 4918685 | Transceiver arrangement for full-duplex data transmission comprising an echo canceller and provisions for testing the arrangement A transceiver arrangement for full-duplex data transmission over a two-wire circuit (6) comprises a transmitter part (1-4), a receiver part (7, 8, 11-15), a hybrid junction (5) to interconnect the transmitter and receiver parts and the two-wire circuit (6... | 04/17/1990 |
| 4915651 | Coaxial connector The connector comprises two conector portions (1, 3), each of which comprises an inner contact member (5, 49) which is coaxially surrounded by an outer contact member (23, 59) whereto it is mechanically connected via an insulating body (9, 53). At its fre... | 04/10/1990 |
| 4912431 | Control amplifier A control amplifier enabling large bandwidths (.apprxeq.2 GHz) and a large dynamic control range (.apprxeq.25 dB). The amplifying element is a MESFET. This MESFET is automatically biased. Thus, FET's whose pinch-off voltage is subject to a large variation... | 03/27/1990 |
| 4899306 | Test interface circuit which generates different interface control signals for different target computers responding to control signals from host computer A general purpose computer test interface is used to test various types of computers having differing input/output characteristics. The interface comprises a control unit which is responsive to messages from a controlling host computer to generate a uniqu... | 02/06/1990 |
| 4899373 | Method and apparatus for providing personalized telephone subscriber features at remote locations Personalized telephone features are made available to subscribers away from their home base. A nationally accessible data base system stores feature data in association with personal identification numbers. A subscriber wishing to use personalized feature... | 02/06/1990 |
| 4897867 | Method of and an arrangement for forwarding a customer order A method and an arrangement are disclosed for forwarding a customer order received from a requesting customer line to a vendor data link. For use with a telecommunications switching system, the order entry arrangement includes a customer signal receiver f... | 01/30/1990 |
| 4897866 | Telecommunication system with subscriber controlled feature modification An arrangement for allowing a subscriber to select telephone features from the subscriber terminal is disclosed. The subscriber terminal includes a touch screen display and a customer premises computer. The terminal in response to a touching of the approp... | 01/30/1990 |
| 4835737 | Method and apparatus for controlled removal and insertion of circuit modules An electronic circuit board electrically connected to other circuits of a data processing system by means of a bus, may be removed and re-inserted in the system without the necessity of disabling other circuits connected to the bus. A latch actuated switc... | 05/30/1989 |
| 4757529 | Call distribution arrangement In a telecommunication switching system, incoming calls of various call types directed to a group of associated subscriber terminals are queued by call type and distributed on a priority basis. A separate queue is created for each call type and a table is... | 07/12/1988 |
| 4757526 | Signal transfer arrangement A telecommunication system providing centrex services, and having an attendant position serving users from diverse customer locations. Users at a satellite customer location connected to one exchange and employing ISDN terminals are provided with access t... | 07/12/1988 |
| 4755995 | Program update in duplicated switching systems A time-division switching system including first and second control units operating in accordance with a generic program is disclosed. After a new generic program is stored in the second control unit, the first control unit still operating in response to ... | 07/05/1988 |
| 4744023 | Processor access control arrangement in a multiprocessor system In a multiprocessor system, processors are connected to an interconnecting bus by means of bus interface circuits which comprise an address buffer in addition to data buffers. The interconnecting bus, in addition to a destination address and data also car... | 05/10/1988 |
| 4713758 | Computer testing arrangement In the disclosed system, the operation of a target computer is monitored by a terminal controller connected to one or more of the computer's input/output ports. The controller can send data on one of the computer's ports and simultaneously record and moni... | 12/15/1987 |
| 4704670 | Power supply with regulated output voltage A power supply circuit for use with telecommunication subscriber lines provides a substantially constant power output over one range of load impedances and a substantially constant voltage output over a range of load impedances greater than a critical imp... | 11/03/1987 |
| 4700340 | Method and apparatus for providing variable reliability in a telecommunication switching system In a telecommunication switching system adapted for handling call signaling information and data in packet format, a number of protocol handlers (150) are interconnected by means of a local area network (171,173). A variable number of spares may be availa... | 10/13/1987 |
| 4698618 | Keyboard with arrays of function keys A keyboard for use with a terminal in a telephone operator assistance system is disclosed. The keyboard has a numeric array of keys that is surrounded on three sides by separate arrays of specialized function keys. The keyboard is arranged so that the mos... | 10/06/1987 |
| 4692918 | Reliable local data network arrangement The reliability of a distributed processing system is enhanced through the use of a highly reliable data communication system. Each node of such a system is connected to the other nodes by a local data network, including duplicated data network media, suc... | 09/08/1987 |
| 4685129 | Power transmission arrangement for telecommunications systems An arrangement for supplying electrical power from a telecommunication central office to a remote network termination employs the wires of a two-wire digital subscriber loop in parallel using earth ground as a return path. At the central office, two power... | 08/04/1987 |
| 4677609 | Semi-automated directory assistance systems A semi-automatic directory assistance system uses a directory assistance computer to help an operator at an operator position terminal find the requested directory number. The control processor, a module control unit, of a module of the system controls th... | 06/30/1987 |
| 4669694 | Tilt adjusting mechanism Apparatus for adjusting the tilt angle of a flat display panel, such as a plasma panel, includes a strut and a rotatable stop member engaging one end of the strut. The strut has one end pivotally attached to a vertically extending support member which sup... | 06/02/1987 |
| 4656623 | Agent communication arrangements for telecommunication systems An operator or agent position, for use by a telephone assistance operator or an agent of a business, communicates with the circuit and packet switching network of a telecommunication switching system using an Integrated Services Digital Network (ISDN) B-c... | 04/07/1987 |
| 4656624 | Operator communication arrangements for operator assistance systems An operator or agent position, for use by a telephone assistance operator or an agent of a business, communicates with the circuit and packet switching network of a telecommunication switching system using an Integrated Devices Digital Network (ISDN) B-ch... | 04/07/1987 |
| 4654654 | Data network acknowledgement arrangement A method and apparatus for flexibly interconnecting the nodes of a local data network to achieve reliable internodal data transmission while minimizing the extra data processing load on the host processors of each node. An interface processor is provided ... | 03/31/1987 |
| 4654820 | Interrupt bus structure In a processor system having a central processor and secondary support processor mounted on a backplane board, a separate peripheral interrupt bus is provided for each secondary support processor to give full interrupt priority capability to peripheral de... | 03/31/1987 |
| 4651652 | Vertically adjustable work desk A work desk has an adjustable height working surface that is raised by a force applied by a lockable gas spring via a first pulley system. The first pulley system doubles the travel of the working surface as compared with the travel of the piston of the g... | 03/24/1987 |
| 4642758 | File transfer scheduling arrangement A method and arrangement for scheduling the transmission of data files among a plurality of interconnected computers is disclosed. When a first computer desires to transmit data files to a second computer, the first sends a short duration message to the s... | 02/10/1987 |
| 4631363 | Method and apparatus for incremental load simulation An adjustable incremental load simulator 200 acts upon a telephone control processor 300 to drive the processor toward and into an overload state. This is accomplished by reducing the number of processing cycles available for system task execution by exec... | 12/23/1986 |
| 4621782 | Arrangement for mounting apparatus Apparatus for mounting a movable superstructure on a fixed base is disclosed. The superstructure, a video display unit, is attached to a cylindrical segment journal which rests on a matching cylindrical segment socket. The journal rotates within the socke... | 11/11/1986 |
| 4620066 | Method and apparatus for sharing operators among assistance systems An arrangement for serving an operator assistance request detected in a first operator assistance system from an operator position in a second operator assistance system. If a first operator assistance system is overloaded or has no attended operator posi... | 10/28/1986 |
| 4599490 | Control of telecommunication switching systems A method and apparatus for controlling a cellular mobile telecommunication system. A switch and a telecommunication control complex cooperate to set up connection between a telecommunication network, such as the common carrier public telephone network, an... | 07/08/1986 |
| 4577287 | Method and apparatus for generating digital signals representing periodic samples of a sine wave A method of generating the digital representation of a sine wave. A digital signal processor is used to generate the sample digital values, spaced at period T, of a sine wave of frequency F, using the value of the previous sample, e, the corresponding val... | 03/18/1986 |
| 4549308 | Secure mobile radio telephony An arrangement for generating an encryption key for use in encrypting communications between a mobile radio telephone unit and a base station is disclosed which can be readily changeable in real time. Each mobile unit is equipped with a machine-readable n... | 10/22/1985 |
| 4547877 | System for switching multirate digitized voice and data A system for efficiently switching time multiplexed digital signals of different bit rates. A switch is described including switch modules each of which can switch data and/or voice 56 kilobit/second (kb) full-rate channels and 2.4 kb, 4.8 kb, and 9.6 kb ... | 10/15/1985 |
| 4543627 | Internal communication arrangement for a multiprocessor system A data communication arrangement in which an interface processor effects the transmission of messages between two processors of a multiprocessor system. The interface processor is connected to the communicating processors via direct memory access circuits... | 09/24/1985 |
| 4538782 | Electrical cable supporting clamp A cable supporting clamp (10) for the orderly routing of flat electrical cables (28, 29, 30) at the interconnection side of electrical equipment frames. A pair of jaws each formed of a pair of arms (18-19; 20-21) extending from one side of a backplate (15... | 09/03/1985 |
| 4539637 | Method and apparatus for handling interprocessor calls in a multiprocessor system A multiprocessor arrangement in which the individual program functions of a program process are executed on different processors. Data shared by different program functions is stored in shared memory and the programs are stored in local memory of the indi... | 09/03/1985 |
