Abstract: The specification describes a metal contact material optimized for diffused contacts to the buried emitter-base junction in DHBT devices. The metal contact material is a multilayer structure of Pd--Pt--Au which gives the required critical diffusion properties for low resistance contacts to the buried base layer without shorting to the collector layer.

Abstract: A system an method for efficiently providing access by a large number of clients to objects located at a large number of information servers. A non-bottleneck solution is provided to sharing load among servers by migrating or replicating objects over from highly loaded servers to less highly loaded servers. Objects that experience low loading are deleted to make room for more highly used objects and to permit make space for new objects. A naming service is provided to provide rapid access to a replica of a requested objects, while avoiding directing access requests to servers from which replicas of requested objects have been deleted. Hierarchical ordering of replication and naming functions permits a variety of particular access methods to be realized.

Abstract: An automatically advancing user interface for entering new data and editing pre-existing data in data entry fields on a display screen. Data is entered and/or edited in a universal handwriting capture widget. A plurality of text entry widgets corresponding to the different data entry fields are displayed on the screen. The user defines a sequentially ordered list of text entry widgets. At any given time only one text entry widget is selected as the current text entry widget based on the sequentially ordered list. The data in the current text entry widget is displayed in the handwriting capture widget. After the data has been entered and/or edited in the handwriting capture widget it is displayed in the current text entry widget. The current text entry widget is then automatically advanced by selecting as the current text entry widget the next text entry widget in the sequentially ordered list of text entry widgets.

Abstract: An electrical connector, comprising an insulating housing, a plurality of conductors mounted within the insulating housing in at least two rows of aligned pairs, a first compensation section which provides a first crosstalk compensation, and a second compensation section which provides a second crosstalk compensation. A first end portion of each conductor is adapted to electrically connect with contacts of another connector while a second end portion of each conductor is adapted to electrically connect with an electrical device such as a printed circuit board. The first compensation section is located within the insulating housing with the conductors being arranged therein in an orientation to provide the first crosstalk compensation. The second compensation section further is located within the connector and typically comprises a multi-layered circuit board.

Abstract: An apparatus and method for demounting parts from the adhesive upper surface of a film has a base with a tool mounted thereon. A portion of the tool has a fluted surface extending above the base upper surface. The film lower surface is positioned above the base with a part on the film overlying and opposite the fluted surface of the tool. A vacuum is supplied through at least one passage in the base to the film lower surface to draw the film around and over the tool flute and force the part to at least partially separate from the film adhesive upper surface. The part that has been separated from the adhesive upper surface of the film is stripped from the film adhesive upper surface such as by applying a vacuum force directly to the part through a collet and moving the collet and base relative to one another.

Abstract: A new method for real time implementation of rate-distortion optimized coding mode selection is disclosed that can be efficiently applied to H-263-compatible video codecs and other codecs of similar type. A normalized rate-distortion model is used to efficiently compute the rate and the distortion when encoding motion-compensated prediction error signals, instead of performing DCT, quantization and entropy-encoding. A fast algorithm is also disclosed that determines sub-optimal values of coding parameters such as the quantization parameter and the Lagrangian multiplier, .lambda., for the trellis search. Very good rate control and picture quality are achieved, especially when the disclosed techniques are applied in very low bitrate video coding.

Abstract: A nonlinear analysis for characterizing phase noise and timing jitter in oscillators is disclosed. The method and apparatus utilize a nonlinear differential equation to characterize the phase error of a given oscillator. A precise stochastic characterization of timing jitter and spectral dispersion is also disclosed based on the nonlinear differential equation. Representative time and frequency domain computational techniques are disclosed for characterizing the phase noise and timing jitter of circuits. In addition, a single scalar constant, c, is utilized to describe jitter and spectral spreading in a noisy oscillator.

Abstract: An integrated circuit, e.g. an Audio Codec (AC) '97 conforming audio codec, includes a digital filter and gain module including multiple channels of gain control and multiple channels of digital filtering. A gain control module includes an overflow check of data samples requiring differing lengths of clamping. Each channel of the digital filter includes a finite impulse response (FIR) filter, and an infinite impulse response (IIR) filter. The digital filtering is implemented largely in hardware independent of the number of channels required and/or independent of the required order of the filtering. Thus, filter channels can be added or additional filtering implemented merely by increasing the clock speed without changing the digital filter design. The FIR filter is capable of being reset each frame to prevent a direct current (DC) buildup at internal nodes. The IIR filter performs a plurality of 2.sup.nd order biquadratic equations in an overall average of as few as four clock cycles per 2.sup.

Abstract: A communication connector arrangement has a contact wire support, and at least a first and a second pair of terminal contact wires with portions fixed on the support. Each pair of contact wires has contact portions for establishing electrical connections with a mating connector. A first leading portion of a first contact wire of the first pair, and a second leading portion of a second contact wire of the second pair, extend generally parallel to one another and are terminated at their ends by a capacitance element. Capacitive crosstalk compensation is thus produced at the contact portions of the terminal contact wires, when the latter are engaged by the mating connector. In a disclosed embodiment, the arrangement includes a jack frame joined with the contact wire support, and the terminal contact wires are positioned inside a connector opening in the jack frame to connect electrically with a plug connector when inserted in the connector opening in the frame.

Abstract: A high frequency divider circuit for producing output signals of half the frequency of an input clock signal includes two identical circuit sections, each producing an output signal and its complement. The circuit sections are connected to each other so that the output signals of one circuit section serve as input signals to the other circuit section. Each circuit section contains a load transistor which is controlled by one of the clock signal and the clock signal complement, and a switch transistor which is controlled by the other of the clock signal and the clock signal complement. The inventive circuit exhibits a reduced RC time constant for each circuit section and an increased output signal swing between the output signals and their respective complements, as contrasted with prior art frequency dividers, thereby increasing the overall circuit response time and its ability to operate at high frequencies.

Abstract: This disclosure describes the use in telecommunications of a data processing technique for accelerating the calculation of data points in volume image rendering using volume ray casting, to create 3-dimensional data sets of network operational characteristics. Following basic data collection from a telecommunications network, for example, the 3-D discrete wavelet transform of the volume ray casting is performed on the data volume. Then, an "index" volume is pre-computed with the same resolution as the original data volume, and is the basis for setting the sampling rate (distance) at each voxel. The spatial-frequency locality of the wavelet coefficients is utilized to detect the maximum local frequency. From the latter, the appropriate sampling distance is chosen. The index volume information is applied to perform adaptive-sampling ray casting computations in the spatial domain. The volume rendering therefore can be approximated in a fast but controlled process.

Abstract: A thick holographic recording medium suitable for use in multiplex holography is prepared from a solution of a bi-functional oligomer and a mono-functional monomer. Precuring, possibly at the same radiation wavelength used for recording, cross-links the oligomer, thereby creating a host for the recording monomer.

Abstract: A storage container for semiconductor objects is disclosed. The invention has a mounting structure having an inner frame, a temperature sensitive adherent film and an outer frame. Semiconductor objects are placed on the temperature sensitive adherent and covered. The cover does not touch the semiconductor objects because it has a spacer made of non-stick material. The invention stores semiconductor objects for a relatively long period of time in a safe and secure manner with minimal threat of breakage.

Abstract: A modular door mounted heat exchanger (10) for use with an outdoor equipment enclosure (12) of the type having a sealed equipment compartment (22) used to house heat generating electronics and telecommunications equipment (29) therein is disclosed. The heat exchanger includes a door panel (33) sized and shaped to be received on, and to close an access opening (20) defined as a part of the equipment enclosure. The door panel has an interior surface (34) for facing inwardly of the enclosure, and an exterior surface (36) for facing outwardly of the enclosure. A heat exchanger cover (37) constructed and arranged to be mounted to the exterior surface of the door panel is provided. The heat exchanger cover defines a plenum (38) between the exterior surface of the door panel and the heat exchanger cover. At least a first opening (40) and at least a spaced second opening (41) are defined within the plenum for defining an air flow path (44, 45) passing within and at least partially along the plenum.

Abstract: A tunable semiconductor laser comprises a gain section having an MQW active region, a uniform pitch grating DFB region, and first waveguide. A composite reflector, including a second MQW region and a second waveguide, forms a cavity resonator with the DFB region. A tuning voltage applied to the composite reflector induces refractive index changes, thereby allowing the center wavelength to be altered.

Abstract: A pilotless feed forward distortion reduction system uses phase and gain control based on the phases and amplitudes of combining signals prior to a distortion isolation point to maintain the relationship between the phase and amplitudes of combining signals. For example, the feed forward arrangement receives a signal to be amplified on a main signal path and replicates the signal onto a main signal path and a feed forward path. The signal on the main signal path is applied to a gain & phase circuit. The output of gain & phase circuit is applied to the amplifier whose output comprises the amplified signal and distortion signals produced by the amplifier. A portion of the output of the amplifier is placed on a coupling path and combined at the distortion isolation point with a delayed version of the signal on the second path to isolate the distortion produced from the amplifier.

Abstract: An insulated metal substrate printed wiring board includes a thermally conductive base plate. A first dielectric layer is disposed on the base plate. An electrically conductive trace is disposed on the top surface of the first dielectric layer. A second dielectric layer is disposed on the top surface of the first electrically conductive trace. A second electrically conductive trace is disposed on the top surface of the second dielectric layer. The second dielectric layer and the second electrically conductive trace include an aperture to expose the electrically conductive trace disposed on the top surface of the first dielectric layer. High power dissipating components are mounted through the aperture in the second electrically conductive layer and second dielectric layer for electrical connection to the electrically conductive trace disposed on the top surface of the first dielectric layer.

Abstract: The present invention relates to a system for receiving, processing, and storing real-time data from various types of input, including but not limited to information from a vehicle's micro-processing systems, a driver information card, a vehicle information card, and physical attributes of the driver/owner. In addition, the collected data is then transmitted to various entities via a Highway Information System which may include networked sensors to receive the collected data and processors to process the data. The processors may be capable of downloading the collected data to a data storage unit whereby various entities can access the data. In the alternative, the processors may also be capable of automatically transmitting the collected data directly to the various entities via wireless transmission.

Abstract: A multiple agent system providing each of a plurality of agents, i.e., processors, access to a shared synchronous memory. A super agent may be an agent from among a plurality of agents which accesses a shared synchronous memory most frequently. The super agent has direct access to the shared synchronous memory, without negotiation and/or arbitration, while the non-super agents access the shared synchronous memory under the control of an arbiter-and-switch. Open windows are generated when the super agent is not accessing the shared synchronous memory. The non-super agents can be allowed interim access to the shared synchronous memory even before the super agent terminates ownership of the shared synchronous memory.

Abstract: A method of fabricating an expanded beam optical waveguide device (e.g., a laser), comprises the steps of (a) forming a first semiconductor waveguide region having first and second sections of different thickness and an intermediate vertical taper section of varying thickness coupling the first and second sections to one another, the first waveguide region being effective to expand the size of the beam as it propagates from the first section to the second section, (b) forming a second semiconductor region (e.g., a laser active region) on the first waveguide region, (c) etching the second region so as to form an essentially vertical first surface of length A-B which extends obliquely across the propagation axis of the device, (d) forming a third semiconductor region (e.g.