Abstract: Limiting the base stations to which a wireless terminal will attempt to establish communication. In a first and second embodiment this is done by the wireless switching system or another system having the capability of storing within each individual wireless terminal a list of base stations that can be utilized by that wireless terminal. When a wireless terminal first registers on the wireless switching system, the wireless switching system would be responsive to the identification code of the wireless terminal to transmit a list of base stations that can be utilized by the wireless terminal to the wireless terminal. The wireless terminal then stores that list for future use. In a third embodiment, each tenant would be assigned a group number. Each of the base stations would periodically transmit the numbers of the groups that could access the base station. A wireless terminal monitors these group numbers before attempting to register on a base station.

Abstract: A thermal conductor having electromagnetic interference shielding capabilities for electronic components. The conductor comprises a conductive strip and a support surface connected to the conductive strip. The conductive strip provides thermal conductivity and EMI shielding to the electronic components. The support surface maximizes the area of thermal contact between the conductive strip and the electronic component thereby maximizing the thermal conductivity of the conductor.

Abstract: A demodulator of a CDMA base station receiver comprises a bank of 64 noncoherent Walsh correlators, each of which are identified by an index value and provide a correlator output signal to a soft decision metric generator. The soft decision metric generator provides a decision metric, D.sub.k, as a function of the L highest energy correlator output signals and their corresponding index values, where L>1.

Abstract: An optical fiber connector is disclosed for terminating an optical cable which has a plastic core and a surrounding jacket. The connector includes a body member which has a central bore extending therethrough within which is a longitudinally extending internally threaded portion dimensioned to grip the plastic jacket when the cable is screwed into the body member. The bore has a tapered section extending from the threaded portion to a cable entrant end of the body to facilitate insertion of an optical cable into the body.

Abstract: A method for determining a volume change of a viscous liquid during a physical or chemical process is disclosed. The volume change of the viscous liquid is determined by confining a layer of a viscous liquid on a portion of a rigid body and then measuring the linear (one dimensional) displacement of a planar surface formed thereon, as the viscous liquid undergoes the physical or chemical process. The surface of the layer of the viscous liquid is planar relative to the rigid body.

Abstract: A novel latch circuit configuration that substantially reduces inverter-based setup and hold times. The latch circuit includes first and second input switches connected to an effective sense amplifier configuration. It is possible for the input switches to receive complementary signals of a balanced input signal. The latch circuit operates in initialization and output modes based on the signal level of an alternating clock signal. The output mode produces an output signal having a first or second signal magnitude based on the magnitude of the input signal at the end of the initialization mode. Also, disclosed is a high-speed serial-to-parallel converter based on this latch circuit.

Abstract: A removable transistor clamping fixture is disclosed which comprises an outer housing with a crosspiece configured to sit on top of the transistor. A U-shaped plunger straddles the crosspiece and has feet configured to rest on top of the transistor leads. One or more compression spring are placed between the top of the plunger and a coverplate so as to bias the plunger in a downward manner. When the clamping fixture is placed over a transistor, the crosspiece holds the transistor in place while the plunger feet apply a uniform downward pressure on the transistor leads of sufficient force to place the leads in electrical contact with an underlying printed circuit board. The clamping unit can be made largely from a plastic having a low dielectric constant to reduce the effect of the clamping fixture on the transistor's behavior.

Abstract: The present noninvasive load and pressure sensing system makes use of a transparent pressure vessel that is filled with a compressible fluid, whose refractive index changes as a function of the pressure applied to the compressible fluid to redirect the path of a light beam that is transmitted through the transparent pressure vessel. An incident beam of coherent monochromatic light is applied to a transparent segment of a wall of the transparent pressure vessel, where this incident light beam is refracted by the compressible fluid contained in the transparent pressure vessel. The refracted light beam traverses the transparent pressure vessel and exits the transparent pressure vessel at a point along the opposite wall of the transparent pressure vessel as determined by the refractive index of the compressible fluid, which is determined by the pressure of the compressible fluid.

Abstract: An optical fiber connector assembly has a connector having a bore having a cable receiving end and a reentrant interface and forming a fiber holder. A latching arm has latch means for engaging a shoulder in a adapter, and camming lobes on the latching arm engage sloping ramps in the adapter to impart a bias force to move the connector toward the interface end. A bias force augmenting member is included for insuring reliable connections over extended periods of time. The augmenting member is a resilient member whose elastic force is added to the biasing force produced by the camming lobes.

Abstract: A twin tub integrated circuit and method for its formation are disclosed. A portion of the substrate is covered by photoresist while an n region is formed, illustratively, by ion implantation. Then the n region is covered with a protective material, illustratively a spin on glass or another photoresist. The previously-formed photoresist is removed and a p-type implant is performed to create an p region. When all the protective layers are removed, both regions have upper surfaces which are co-planar. The co-planar surfaces, a departure from previous practice, make submicron lithography easier. The regions are annealed to form twin tubs.

Abstract: The length of the tail which results in an optical output from a laser diode after the laser diode is no longer being driven is reduced or eliminated by a laser diode driver with a tail eliminator. More specifically, the laser diode driver includes an energy drainage path that is activated when packet communication is over. In one embodiment of invention, the terminals of the laser diode are short-circuited to provide the energy drainage path. In another embodiment of the invention, the laser diode is reverse biased, so that charges stored in the laser diode are combined with charges which are provided thereto. Advantageously, the tail emission is substantially eliminated.

Abstract: The invention disclosed is a method and apparatus for cleaving semiconductor material without physical contact. Tick marks are formed in a major surface of the material where cleaving is desired. A fulcrum member is moved with respect to the material until a tick mark is in alignment with the fulcrum member. A gas jet, also aligned with the fulcrum member, is applied to the surface of the material to form the cleave.

Abstract: The present invention provides the broad concept of increasing product performance and reliability by causing the ion contaminants to migrate to a region of the semiconductor film and removing that region (containing a concentration of the ion contaminants), thus reducing a total concentration of the ion contaminants in the semiconductor film. Since a concentration of ion contaminants may adversely affect performance and reliability of devices manufactured from semiconductor films having the ion contaminants, the present invention removes the ion contaminants to alleviate performance and reliability problems associated with the presence of the ion contaminants.

Abstract: Interpolating filter banks are constructed for use with signals which may be represented as a lattice of arbitrary dimension d. The filter banks include M channels, where M is greater than or equal to two. A given filter bank is built by first computing a set of shifts .tau..sub.i as D.sup.-1 t.sub.i, i=1,2, . . . M-1, where t.sub.i is a set of coset representatives taken from a unit cell of the input signal lattice, and D is a dilation matrix having a determinant equal to M. A polynomial interpolation algorithm is then applied to determine weights for a set of M-1 predict filters P.sub.i having the shifts .tau..sub.i. A corresponding set of update filters U.sub.i are then selected as U.sub.i =P.sub.i */M, where P.sub.i * is the adjoint of the predict filter P.sub.i. The resulting predict and update filters are arranged in a lifting structure such that each of the predict and update filters are associated with a pair of the M channels of the filter bank.

Abstract: A way of synchronizing the contents of commonly-owned mailboxes (108, 111) in disparate messaging systems, such as an e-mail system (100) and a multimedia system (101), networked via the Internet (102). The e-mail system uses the existing auto-forwarding feature (115) of the Internet e-mail community to send a copy of every message arriving at the e-mail mailbox to the other system's synchronized mailbox. The other system applies a 3-part synchronization rule (113) to every message (200) arriving at its synchronized mailbox. If it detects a syncmark (204)--an identifier--of its own mailbox in the header (201) of the message, indicating that the message was previously copy-forwarded from this system, it just deletes the message.

Abstract: A linearized resistor for integrated circuits combines an N-type diffused resistor and a P-type diffused resistor. In one embodiment, the N-type and P-type diffused resistors are connected in series. In another embodiment, the N-type and P-type diffused resistors are connected in parallel. Two or more linearized resistors of the present invention may be used in IC circuits, such as voltage dividers, inverting amplifiers, single-ended operational amplifiers, and single-ended differential operational amplifiers. Linearized resistors of the present invention can be designed to have voltage coefficients smaller than conventional IC resistors having a single diffused resistor. As such, linearized resistors of the present invention can be designed to provide more uniform resistance over their operating voltage range than conventional IC resistors.

Abstract: A squarer generates an array of partial products. A method of squaring a representation of a number includes generating an array of partial products, combining the partial product on one side of a diagonal of the array with partial products on the other side of the diagonal to form a folded array of partial products, and combining each of at least one more than half of the partial products in the diagonal of the array with a corresponding one of the partial products in the folded array to produce a new folded array of partial products. In an alternative embodiment, the present invention is a circuit for squaring an n-bit representation of a number.

Abstract: Providing by a wireless terminal the sole communication link to a wireless telecommunication switching system, and inserting the wireless terminal into an auxiliary desktop unit to provide the full functional capabilities of a business telecommunication terminal. The result is that a user has one telephone number for the wireless terminal, and yet, when the wireless terminal is inserted into the auxiliary unit, the user is provided the full capabilities of a modern business telecommunication wired terminal. Also, no wired telephone links must be installed since the wireless terminal communicates solely over a wireless media.

Abstract: Embodiments of the invention include an off-axis amplitude and phase encoding optical system, apparatus and method of storage in which a holographic optical element (HOE) is used advantageously to reconstruct optical elements typically used to phaseencode an object beam emanating from a spatial light modulator (SLM). The optical system includes a spatial light modulator (SLM) such as a digital micro-mirror device (DMD), a data storage device such as a holographic memory cell (HMC), and the holographic optical element (HOE) for duplicating the phase-encoding functions typically performed on an object beam emanating from the SLM prior to alignment with the holographic memory cell (HMC). Conventionally, a phase mask along with one or more optical elements comprising a four-F lens system typically are needed to phase encode the amplitude-encoded light pattern that propagates from the SLM.

Abstract: Improved layouts for switching networks having N.multidot.log N switching circuits, and improved switches incorporating such layouts, are disclosed. An improved layout reduces grid-area requirements for Benes switching network to an area of less than 3N.sup.2 grid units. The improved layout results from positioning the various switching circuits at certain defined locations. Unlike conventional layouts of the Benes network, the switching circuits are aligned in only one direction, e.g., columns but not rows, and the links connecting switching circuits are slanted.