| Patent Number |
Title Of Patent |
Date Issued |
| 5901164 |
Direct amplitude modulation of lasers |
May 4, 1999 |
| A DFB laser is provided with a top electrode divided symmetrically into two or three in-line separate elements through which a bias current is applied with a symmetrical distribution and through which a modulation current is applied in push-pull with a temporal asymmetry. |
| 5901141 |
Method of tracing the route of virtual connections |
May 4, 1999 |
| A telecommunications network such as an ATM, Frame Relay or packet based network will be better managed by identifying nodes through which a virtual connection is routed between two end nodes. A new method of tracing the nodes on the route includes sending trace cells downstream of a |
| 5901041 |
Flexible integrated circuit package |
May 4, 1999 |
| A flexible integrated circuit package for mounting on a substrate is disclosed. The package consists of a tape film having layers of dielectric and conductive material, a semiconductor die and an array of conductive leads. A molded body covers the die, and absorbs the majority of the |
| 5899981 |
Method and system for processing expense vouchers |
May 4, 1999 |
| A system and method for processing expense reimbursement claims supported by at least one receipt associated with identifying indicia. The system includes computer readable memory, in which is defined an expense voucher record having a charge field for identifying an entity incurring exp |
| 5898667 |
SS7 network management primeship |
April 27, 1999 |
| A signaling transfer point (STP) includes a communications controller, node maintenance unit, and a plurality of link-interface units, and designates to the individual link-interface units primary responsibility for management of resources coupled to the STP. When one of the resources |
| 5898332 |
Time delay charge integration circuit |
April 27, 1999 |
| A charge integration circuit incorporates first and second capacitors, and first and second reference voltage supplies. A first switch controls integration of charge in the first capacitor and selectively resets the first capacitor to the first reference voltage. A second switch sele |
| 5896568 |
Wireless architecture having redistributed access functions |
April 20, 1999 |
| A wireless access architecture, having redistributed wireless access functions, comprises a plurality of cell sites connected to a main switching point. The cell sites communicate with cellular users within their respective cell site areas and comprise a communication segment for exc |
| 5896485 |
Equipment backplane for providing mechanical support and a communications path between equipment |
April 20, 1999 |
| A backplane comprises a support structure which has a plurality of apertures defined along it, the apertures communicating with an optical path extending along the structure. An equipment module has a connector which carries optical devices, the connector engaging with one of the ape |
| 5896411 |
Enhanced reverse link power control in a wireless communication system |
April 20, 1999 |
| An enhanced mechanism for the reverse link power control in a wireless communication system, especially for high speed data applications and fixed wireless communication applications, dynamically adjusts the power control step size of the reverse link power control. The power control |
| 5896391 |
Forward error correction assisted receiver optimization |
April 20, 1999 |
| A method for recovering an outgoing data signal from an incoming signal received over a transmission network. The method provides for preparing a bit error rate (BER) map for a data regenerator, determining, on the BER map, an optimal operation point for a provisioned BER.sub.prov value, |
| 5896380 |
Multi-core ATM switch with cells in the core from an inlet for an outlet being aligned |
April 20, 1999 |
| A multi-stage ATM switch has a plurality of inlet stage fabrics, core stage fabrics and outlet stage fabrics. ATM cells routed by the switch have destination fields including (i) an identification of the outlet stage fabric and (ii) an identification of the outlet port. Cells incoming to |
| 5896330 |
Multi-port random access memory with shadow write test mode |
April 20, 1999 |
| Disclosed is an architecture of a RAM (random access memory) with BIST (built-in self test) or functional test function. The RAM has a memory cell for storing differential or single-ended binary data and bit line signals are fully differential or single-ended. Shadow write is applied to |
| 5896071 |
Surface wave device balun resonator filters |
April 20, 1999 |
| A surface wave device comprises first and second SPUDT (single phase unidirectional transducer) resonator filters each comprising first and second transducers, which are preferably RSPUDTs (resonant SPUDTs), the resonator filters being the same except that one transducer of the second |
| 5896062 |
Amplifier with switched DC bias voltage feedback |
April 20, 1999 |
| In an amplifier circuit, bias feedback to an amplifying transistor is provided by interconnecting the DC bias voltage applied to the transistor output and the transistor input with a feedback circuit consisting of a switching transistor and bias resistors. Bias current and stable operati |
| 5895544 |
Method of controlling distance between members during article manufacture and article made there |
April 20, 1999 |
| A method of providing a predetermined set distance apart between two members in article manufacture. This involves clamping the members together with a mixture of an adhesive and glass microspheres between opposing surfaces of the members, the microspheres being of specific grid size |
| 5894477 |
Communications system |
April 13, 1999 |
| An integrated broadband and narrowband access arrangement, includes a multiplexed ATM adapter and an ATM core. The ATM core terminates a broadband access system and a narrowband access system whereby to deliver ATM cells to a SDH/ATM trunk or to the adapter. The services comprising t |
| 5894298 |
Display apparatus |
April 13, 1999 |
| An alphanumeric, and graphics liquid crystal display having utility in portable devices used in communications, measurement, and data display systems generally, is disclosed in the environment of a wireless telephone handset. The display includes a transparent viewing screen having a |
| 5894166 |
Chip mounting scheme |
April 13, 1999 |
| To mount a semiconductor i.c. die on a support substrate the upper surface of the die is provided with electrically conductive bumps all of which are the same height. The bumps are provided on the ground connection pads on the upper surface of the die. The conductive pads on the die incl |
| 5893056 |
Methods and apparatus for generating noise signals from speech signals |
April 6, 1999 |
| In methods and apparatus for generating an LPC-encoded noise signal from an LPC-encoded speech signal, excitation parameters of the LPC-encoded speech signal for a current frame are randomized upon detection of speech in the current frame. For frames in which no speech is detected, LPC c |
| 5892872 |
Network unit enclosure |
April 6, 1999 |
| A network unit enclosure adapted for exposure to humidity and airborne contaminants defines a sealed first chamber and an adjacent second chamber. The two chambers are sealingly separated by a circuitry substrate on which electronic components are mounted in the first chamber and thr |
| 5892858 |
Duobinary coding and modulation technique for optical communication systems |
April 6, 1999 |
| A method for encoding a binary input sequence x(0,1) to obtain a duobinary output sequence y(+1,0,-1) is provided. The duobinary coding technique always provides an output bit y.sub.k =0 when the corresponding bit x.sub.k =0; bits y.sub.k alternatively assume a logical level "+1" and |
| 5892814 |
Flexible, tapeless, personalized auto-attendant telephone |
April 6, 1999 |
| A method of operating a subscriber terminal to provide a flexible tapeless personalized auto-attendant telephone by means of measuring ring cadence of an incoming telephone call; and selecting one outgoing message in response to the ring cadence and playing it after a predetermined numbe |
| 5890052 |
Foldable wireless telephone wallet |
March 30, 1999 |
| A portable wireless telephone structure in which a foldable wallet carries a telephone in addition to having a pocket to house paper currency. The telephone is exposed for use with the wallet in open condition and is housed with the wallet in closed condition. The telephone has a com |
| 5889765 |
Bi-directional communications network |
March 30, 1999 |
| A bi-directional communications network is disclosed, and in particular a TDM/TDMA protocol for the shared coax medium downstream/upstream resource. This protocol provides a very efficient technique for resource sharing in the access network of HFC systems. A method of communicating info |
| 5887368 |
Cable tag having separable sub-label and method of using same |
March 30, 1999 |
| A cable tag allows information about the identity of a communications or power cable and its route to be secured to the cable. The cable tag is secured to a cable in such a way that it can be readily removed and re-secured if necessary. For installation, a portion of a liner adhered to |
| 5887156 |
Evolution planning in a wireless network |
March 23, 1999 |
| Various operational measurements of a network element are determined in real time. These measurements are used to determine the call carrying capacity of the elements and the reaction of the network element to various call loads. Models of the network elements are generated from the |
| 5886984 |
Method and system for service capacity calculation for multimedia services under aggregate traff |
March 23, 1999 |
| A method and system are provided for calculating the total service capacity for multimedia traffic under aggregate traffic conditions within a shared transmission medium, such as an ATM network. A total number of different types of telecommunication traffic is specified by the network op |
| 5886907 |
Method and system for modeling aggregate multimedia traffic within a shared transmission medium |
March 23, 1999 |
| The method and system of the present invention can be utilized to model aggregate multimedia traffic within a shared transmission medium, such as an ATM network, so that customer expectations can be met and the network can be constructed and utilized efficiently. A total number of differ |
| 5886867 |
Ferroelectric dielectric for integrated circuit applications at microwave frequencies |
March 23, 1999 |
| A ferroelectric dielectric for microwave applications is provided including a polycrystalline perovskite phase of lead zirconate titanate dielectric material. Small grain size material is provided by a low temperature process, by a rapid thermal annealing process. A layer of amorphous |
| 5886629 |
Tool for use with telecommunications modules |
March 23, 1999 |
| A tool for use in manipulating telecommunications modules comprises a housing having a grip, engagement means for engaging with a module so as to securely grasp the module and a transmitter/receiver unit for transmitting signals to and receiving information from the module. Informati |
| 5885881 |
Planar wave guide cladding |
March 23, 1999 |
| An optical circuit device having a core supported on a substrate incorporates a wave guide being in a layer of the core. The structure is provided with a cladding layer by depositing by means of a PECVD process a cladding material on the wave guide core and maintaining a negative bias |
| 5884486 |
Thermoelectric humidity pump and method for dehumidfying of an electronic apparatus |
March 23, 1999 |
| The invention relates to apparatus and method for efficiently removing humidity from a chamber. A thermoelectric cooler with a maintained temperature differential between the cool and warm sides of the cooler is used to condense the humidity from within the chamber upon the cool side |
| 5884177 |
Cellular communication system and method providing improved handoff capability |
March 16, 1999 |
| A cellular communication system and method providing improved handoff capability which reduces muting during handoffs. During handoffs, the system simultaneously monitors received signals from both the serving cellsite on a first channel and the target cellsite on a second channel an |
| 5883889 |
Directional pseudonoise offset assignment in a CDMA cellular radiotelephone system |
March 16, 1999 |
| The present invention is based on a tri-cellular grouping of three identical cells. Each cell of the tri-cellular group is driven by a directional antenna that radiates the cell from the center of the group. Multiple tri-cellular groups make up a cellular system having three axes at |
| 5883819 |
Method and system for quality of service assessment for multimedia traffic under aggregate traff |
March 16, 1999 |
| A method and system for assessing quality of service for multimedia traffic under aggregate traffic conditions in a shared transmission network, such as an ATM network. A total number of different traffic services as well as a maximum number of sources for each traffic service are specif |
| 5883784 |
Mounting structure for heat conductively supporting a planar electric device |
March 16, 1999 |
| Mounting for holding a planar electronic device, e.g. a printed circuit board in electronic slots to receive edges of the electronic device and a clamp is inserted into each slot to clamp an edge of the device in heat conductive engagement with a side surface of the slot. The clamp has a |
| 5881369 |
Dual mode transceiver |
March 9, 1999 |
| A dual mode transceiver architecture suitable for adaptation in either a handset or a base station and capable of operating in both Frequency Division Duplex (FDD) mode or in Time Division Duplexing (TDD) mode is disclosed. Such a transceiver has an up conversion path capable of up c |
| 5881145 |
Redirection of calls to ported directory numbers in telephone networks |
March 9, 1999 |
| In a telephone network having a plurality of network nodes, each having a unique network address and using out-of-band signalling for call setup and routing, a method is provided for the routing of calls to a "ported" directory number which has been ported from a donor network node to a |
| 5881060 |
Integrated cellular voice and digital packet data telecommunications systems and methods for the |
March 9, 1999 |
| An integrated voice and packet data telecommunications system has at least one dual mode channel. The system comprises a plurality of transceivers, at least one transceiver being operable to transmit and receive voice traffic on the dual mode channel, and at least one transceiver being |
| 5881049 |
Admission control in an ATM switching node |
March 9, 1999 |
| The invention resides in a precise technique for determining the equivalent bit rate (EBR) of a variable bit rate (VBR) ATM connection. The technique extends a known single-source method developed by Gibbens and Hunt. The new technique applies to shared facilities and hence exploits the |
| 5880837 |
Eye measurement of optical signals by optical sampling |
March 9, 1999 |
| A pulsed optical signal (13) of a network (23) is monitored to obtain eye measurement data as a means of obtaining an indication of signal degradation. Optical sampling of the optical signal is effected by means of an interferometer (2) in which sampling optical pulses (8) are propag |
| 5878383 |
Quantifying circuit performance |
March 2, 1999 |
| The invention relates to automated testing of equipment items of the electronic, electrical, and optical type over a range of environmental conditions. A testing apparatus operates to vary an operating environment of an item of test equipment between a lower extreme and an upper extreme, |
| 5878228 |
Data transfer server with time slots scheduling base on transfer rate and predetermined data |
March 2, 1999 |
| This invention relates to a method and protocol to enable a simple, reliable and highly scaleable data transfer facility in a digital data network. A connectionless, unacknowledged data transfer protocol minimizes resource utilization at a data server and is combined with source rate |
| 5878122 |
Long distance service bureau |
March 2, 1999 |
| A long distance service bureau assists subscribers in selecting a long distance carrier for a long distance, or tariff, call. The long distance service bureau includes a rate table memory and a service logic element. The rate table memory stores rate data, representing tolls charged by |
| 5878119 |
Idle suppression and signal threshold determination therefor |
March 2, 1999 |
| A compression technique is used to suppress the idle or silent portion of both stations in a facsimile transmission. Facsimile transmission is a half-duplex protocol resulting in considerable idle time for either the called terminal or the calling terminal. The invention provides a signa |
| 5878044 |
Data transfer method and apparatus |
March 2, 1999 |
| The invention resides in the field of transferring data and other information from multiple asynchronous TDM channels across a synchronous interface in digital blocks of a preset length. Presently, transfer of data and timing information requires serial transmission of frame payload, |
| 5878043 |
ATM LAN emulation |
March 2, 1999 |
| By using a LAN emulation in an ATM environment, end systems such as workstations etc. can connect to the ATM network while software applications interact as if they are attached to a traditional LAN. The invention is a simple technique for emulating a LAN on an ATM network. According |
| 5878032 |
Delay monitoring of telecommunication networks |
March 2, 1999 |
| Novel techniques are disclosed for continuously monitoring parameters of delay between two nodes in a telecommunication network such as an ATM or frame relay network. The techniques use measurement cells, i.e. test cells, test frames, performance management ATM OAM cells, or performance |
| 5878031 |
Loopback mechanism for frame relay OAM |
March 2, 1999 |
| A loopback mechanism uses frame relay OAM loopback frames which eliminate the need for location identifiers and reduces overhead and complexity. The frames replace source and destination loopback location identifiers by a loopback indicator field, a send node count field and a return nod |
| 5875400 |
Cellular mobile communications system |
February 23, 1999 |
| In a cellular mobile access communications system each mobile terminal registers its location at intervals. From the registration history of each mobile, a probable group of cells within which a mobile terminal may be located is predicted. When a mobile is to be paged, the paging message |
