Abstract: An integrated semiconductor device is formed by bonding the conductors of one fabricated semiconductor device having a substrate to the conductors on another fabricated semiconductor device having a substrate, flowing an etch-resist in the form of a photoresist between the devices, allowing the etch-resist to dry, and removing the substrate from one of the semiconductor devices. Preferably the etch-resist is retained to impart mechanical strength to the device. More specifically, a hybrid semiconductor device is formed by bonding the conductors of one or more GaAs/AlGaAs multiple quantum well modulators to conductors on an IC chip, flowing a photoresist between the modulators and the chip, allowing the photoresist to dry, and removing the substrate from the modulator.

Abstract: A test system in a communication system provides for a simulation of a test telephone call to a switching system under test. A test controller is integrated with the system under test for simulating the telephone call to the system under test. A high speed interface card with a processor is interfaced with the computer on the system under test through a computer bus interface for gathering call processing event data, A high speed interface communicates with the test controller to convey the simulated call processing event data to the controller computer.

Abstract: A rate adaptive polling method sensitive to network congestion is used to monitor network resources. Initially, a baseline rate constraint is set based on desirable engineering factors. Unacknowledged polls are retransmitted with timeouts, successively increasing by a factor of 2. During each polling round, the rate is adapted in accordance with congestion feedback and changes in node status such as recently activated or deactivated nodes. Congestion feedback is estimated from a congestion metric computed as the average delay of all active nodes. Depending on the value of the congestion metric corresponding to polling round Rj, the minimum rate of polling for round Rj+1 is adapted accordingly.

Abstract: A personal computer is typically equipped with a modem that enables the user to dial through the Public Telephone Switched Network (PTSN) to access an Interactive Voice Response system. Once connected to the Interactive Voice Response System, the present system for providing personal computer access to an interactive voice response system uses the touch-tone generation capability of the personal computer to implement a predefined script to navigate through the Interactive Voice Response System. The navigation path is defined by the selections provided by the Interactive Voice Response System to enable a user to reach a computer interaction site that represents one of the back-end selections served by the Interactive Voice Response System. Thus, once the Interactive Voice Response System is traversed, the user can interact with the computer to perform the desired tasks.

Abstract: A preferred embodiment of the cable of the present invention incorporates a core, an outer jacket surrounding the core, and a tape disposed between the core and the outer jacket. The tape includes a first layer and superabsorbent polymers (SAPs) which are applied to the first layer. Preferably, the first layer is formed of spun bonded non-woven polyester material, nylon spun bonded fabric, non-woven glass, polypropylene melt blown non-woven fabric, polyurethane spun bonded fabric, or TCF cellulose fabric, among others. Additionally, the SAPs preferably are provided with a moisture content of greater than approximately 2 percent, by weight, thereby improving the flame-retarding characteristics of the tape.

Abstract: A line-driver receives as an input a Manchester-encoded digital data signal, which is then converted into an analog signal by a wave-shaping circuit. The wave-shaping circuit comprises a bank of current sources with a combined output, each current source being actuated by a switch controlled by a switching signal. The current sources are each scaled by a coefficient, and are actuated in a selected sequence during each input data pulse, thereby generating as a combined output a staircase pulse signal with n steps for each input data pulse.

Abstract: An invalid mobile telephone call made within the service area of a vendor monitored by a vendor computer is detected by RF fingerprinting or the like results in transmission of a kill-call command over a TCP/IP network to a kill-call server that is interfaced with a mobile service center through a data link interface. The kill-call server determines whether the kill-call command is valid and, if so, then it transmits a message tear down request over the data link interface to an executive cellular processor which, if the kill-call capability is active, conveys a call termination message to the associated administrative call processing database node to effect the call termination.

Abstract: Various modem designs are described, along with systems that use the modem designs for communicating data between a large number of remote locations and one or more central locations preferably over CATV. One aspect features a modem having a transmitter which uses a state machine and digital waveform signals stored in a memory to create a modulated signal. Another aspect features a modem having a receiver which uses a digital correlator including an SRAM for detecting a bipolar phase shift keyed signal. Still another aspect features a modem comprising an oscillator circuit having a feedback loop, wherein the feedback loop utilizes a downlink signal, and a protection circuit which prevents a malfunction in the modem from causing system-wide shutdown.

Abstract: A generalized analysis-by-synthesis method and apparatus are disclosed. A plurality of trial original signals are generated based on an original signal for coding. The trial original signals are constrained to be perceptually similar to the original signal. Trial original signals are coded to produce one or more parameters representative thereof. Estimates of the trial original signals are synthesized from these parameters. Errors between the trial original signals and the synthesized estimates are determined. A coded representation of the original signal is determined which comprises parameters of the trial original signal having an associated error which satisfies an error evaluation process. Trial original signals may be generated by application of time-warps or time-shifts to the original signal. Coding of a trial original signal may be performed with conventional analysis-by-synthesis coding such as code-excited linear prediction coding (CELP).

Abstract: A method is for cleaning via openings during manufacturing of integrated circuits. The method preferably comprises the steps of sputter cleaning the via opening at least once, and exposing the via opening to a reducing atmosphere at least once. The method may include alternatingly repeating the sputter cleaning and exposing steps. The step of sputter cleaning is preferably performed prior to the step of exposing, and a sputter cleaning may be performed after a last step of exposing the via opening to the reducing atmosphere. In one embodiment, the exposed metal portion comprises a metal compound, such as an oxide. Accordingly, the step of sputter cleaning removes at least a portion of the metal oxide, and the step of exposing comprises reducing at least a portion of the metal oxide. The invention is particularly applicable when the metal interconnection layer is a copper, as copper readily oxides at its exposed surface.

Abstract: An AAL2/SSCS packet voice system multiplexes various forms of voice-band traffic including voice packets, fax packets, and data packets into a virtual circuit (VC). This AAL2/SSCS packet voice system executes a dynamic call admission algorithm that takes into account call type in deciding whether to admit a new call to the VC. In particular, this approach takes into account different bandwidth needs for different call types. The AAL2/SSCS packet voice system also performs bit or block dropping on voice packets to mitigate the effects of traffic congestion. The bit or block dropping is done based on the packet queue fill value exceeding at least one queue threshold. Further, the AAL2/SSCS packet voice system also dynamically varies a queue threshold as a function of capacity.

Abstract: The present invention is directed to an integrated circuit comprising a voltage source and a voltage sensing circuit having a switch circuit for sensing a switch voltage and a switch current; a voltage comparison circuit connected to the switch circuit for comparing the switch voltage to a limiting voltage; and a current limiting circuit connected to the switch circuit and the voltage comparison circuit, which is capable of limiting the switch current when the switch voltage reaches or exceeds the limiting voltage. In a preferred embodiment of the invention the switch circuit is a bi-directional switch circuit and the voltage comparison circuit incorporates a series of Zener diodes, wherein the current limiting circuit is a current foldback circuit.

Abstract: A hinge which includes a first leaf member, a second leaf member, and a pin rotatably connecting the first leaf member to the second leaf member. The hinge also includes a first contact member connected to the first leaf member and a second contact member connected to the second leaf member. A contact portion of the first contact member and the second contact member establish an electrical connection with each other.

Abstract: A system for adhering a plurality of parts to a support film is provided. The parts are positioned between a support base with a heater and a cover membrane. The cover membrane is located beneath a sealed chamber. The chamber has an inlet through which gas is input. A downward force caused by gas pressure in the chamber causes the cover membrane to contact the parts and presses the plurality of parts against the film. A heating device heats the film to cause the parts to adhere to the film.

Abstract: This invention uses a computer program to mine preexisting hardware equipment configuration data located in a variety of preexisting source hardware equipment configuration databases. The computer program either creates a new hardware equipment configuration database from parts of existing hardware equipment configuration databases or modifies an existing hardware equipment configuration database. The computer program replaces the current system's reliance upon manual data entry by data engineers to configure the operation of a new telecommunication switch or replace the software in a telecommunication switch that was damaged or requires a new hardware equipment configuration data configuration.

Abstract: The present invention relates to a communications connector comprising an internal circuit board having a plurality of circuit board layers that include a plurality of capacitive and inductive devices that counteract the crosstalk created by a first other connector mated to the communications connector. In addition, the communications connector comprises an internal fanout assembly mounted to the internal circuit board that has a plurality of conductors arranged so as to form a compensation area that counteracts crosstalk created by a second other connector mated to the communications connector. The circuit board can comprise at least one capacitive device provided on its outer surface that is manually reducible in size so as to adjust the amount of capacitance created therewith such that the amount of crosstalk compensation provided by the circuit board can be adjusted.

Abstract: An enclosure for electronic devices has a wall of a rigid plastic material, with elongated chambers defined therein. The chambers are filled with a material having a high thermal conductivity, or materials having high heat capacity, such as phase change material. Each chamber is located so that the material in the chamber is in thermal contact with the wall at a first location that tends to be at a relatively high temperature, and at a second location that tends to be at a lower temperature. The enclosure may alternatively have heat pipes of metal rather than chambers.

Abstract: For use with a power supply having first and second circuit protection devices, a detection circuit, a method of monitoring the protection devices and a power supply employing the circuit or the method. In one embodiment, the detection circuit includes (1) a bridge circuit coupled to the first and second circuit protection devices, (2) a resistor parallel-coupled across one of the first and second circuit protection devices and (3) a sensing circuit, coupled to the bridge circuit and the resistor, that senses an imbalance in the bridge circuit and develops therefrom a failure signal when at least one of the first and second circuit protection devices becomes inoperable.

Abstract: An asynchronous wait state generator circuit and method is included in a dual port device, e.g., in a dual port memory, to allow the use of separate address decoders and simultaneous access to memory locations from asynchronously operating, separate ports. When an address collision is detected between accesses on both ports of a dual port device, a wait state signal is generated for the relevant port having the later attempt to access the same memory or other addressable location. In the unique event wherein both accesses are initiated at precisely the same time, a meta-stable element is used to resolve the condition and to allow access to a prioritized port. The wait state signals output for the relevant port of the dual port device are preferably synchronized with the clock signal of the relevant port.

Abstract: A method of aligning, placing, and attaching an optical fiber directly to an electronic, complementary, metal-oxide-semiconductor (CMOS) chip that uses alignment features defined during the CMOS fabrication. The method involves the steps of: i) defining, during the fabrication of an electronic CMOS device, one or more shallow grooves upon the device substrate; ii) disposing an optical fiber within the defined groove(s); and iii) securing the optical fiber within the groove(s). Advantageously, the method may be practiced using a variety of fabrication techniques and apparatus that are compatible with conventional CMOS devices.