A coupling system allows interconnection of multiple light curtains segments but prevents interconnecting dissimilar segment types. A first connector half mounts to a segment while a second connector half mounts to another segment, such that mating the two halves interconnects the two segments. The two mating sections of the connector or coupling system may be formed as matched mating blocks that are mounted in different orientations, depending upon whether they are attached to transmitter or re...

A method for controlling the interface in a composite between the matrix material and reinforcing filaments or fibers in a composite structure which comprises the application of a patterned coating or combination of coatings on the reinforcing filaments or fibers to vary the bond between the reinforcement and the matrix. Proportioning of weak- and strong-bonded areas, their respective strengths, and design of bonding patterns can be tailored to the materials requirements of the composite. This m...

An optical interface for data communication that can be manufactured and aligned in a cost effective manner includes an array of optical emitters and an optical receiver are positioned within a predetermined tolerance with reference to each other so as to establish an optical data communication path. To search for and determine which of the emitters of the array achieves the best alignment, the optical emitters are individually energized in a sequence, while monitoring the output signal of the o...

Dynamic interfaces such as PPP interfaces are configured by (1) saving routing configuration information using symbolic names; (2) determining when a symbolically named interface becomes active; (3) resolving the symbolic name to an operational IP address for routing and RIP traffic; and thereafter (4) communicating dynamic protocol packets over the dynamic interface.

Conversation management is provided in a computer speech recognition system by generating a number of graphical and audio interfaces. The system allocates video and speech for different purposes to cue a user when to speak. The system also makes use of video and speech to cue a user regarding how to speak, thereby alleviating the vocabulary problems common to many speech recognition interfaces. These techniques permit a user to be informed when and how to speak during a fairly complex situation ...

The efficient production of sequential layers of silicon dioxide and polycrystalline silicon is possible using a specific set of reaction steps. This set of reaction steps includes the oxidation of silicon at low oxygen pressure and at temperatures of the magnitude of 900 degrees C., followed by the deposition of polycrystalline silicon at substantially the same temperature utilizing a dichloride silane chemical vapor deposition (CVD) process.

Structure fabricating using standard integrated injection logic (I.sup.2 L) process techniques for providing a multiple of controlled current source outputs for driving I.sup.2 L to analog interfaces. The current source structure is formed in minimum die area because of the space saving features of I.sup.2 L and tracks the performance of the I.sup.2 L circuit. The current source includes a common P-type emitter region diffused into an isolated N-type epitaxial layer which has been isolated by a ...

A method and apparatus for logging rock formations penetrated by a borehole to determine both the resistivity and dielectric constant of the formations. The apparatus comprises an induction logging tool having at least a transmitting coil and two receiver coils and operating in the radio frequency range from 20 to 60 megahertz. The method utilizes both the in-phase and out-of-phase, with respect to the transmitter current, voltage components which are measured at each receiver. The in-phase and ...

A method for determining the location of steeply dipping subsurfaces includes acquiring seismic reflection data, identifying select data which has characteristics indicating that the acoustic pulses which it represents have been reflected from a substantially horizontal interface and a steeply dipping interface, analyzing the select data to locate the steeply dipping interface and displaying the analyzed data.

A stress-free crimp joint for plastic-to-metal interfaces for prevention inst stress cracking of the plastic member. The plastic member has a dovetail flange that is placed in a channel in the metal member. The lip of the metal member that surrounds the flange is circumscribed with a groove. When the lip is crimped over the plastic flange, the groove ensures that the lip bends along an optimum, line, defined by the groove, and that none of the plastic is pinched after the crimping action. The an...