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| Number | Title | Issue Date |
| 5544328 | Coded modulation with unequal error protection Digital signals, such as digitized television signals, are subjected to a source coding step followed by a channel mapping step. The source coding step causes the signal to be represented by first and second data streams. The first stream carries data reg... | 08/06/1996 |
| 5486263 | Etching a diamond body with a molten or partially molten metal A diamond body, such as a CVD diamond film, is etched by immersion of the body in a molten or partially molten metal, such as the rare earth metal La or Ce. While the body is being etched, various portions of a major surface of the body can be protected f... | 01/23/1996 |
| 5442693 | Integrated operator console An integrated console for a human operator who provides listing and directory services, particularly for the 800 telephone number system, to callers via a stored program switching device employs simultaneous MS-DOS and a memory management utility, such as... | 08/15/1995 |
| 5441013 | Method for growing continuous diamond films In contrast to previous approaches, the present inventors have discovered that diamond films can be grown by carbon CVT reactions occurring exclusively in the exothermic regime, where the lower temperature ( | 08/15/1995 |
| 5436756 | Suppressed photocurrent, quantum well optical modulation device Photocurrent suppression is achieved without deleteriously affecting modulation performance in a surface normal, electro-absorption, quantum well modulator by introducing a sufficient number of non-radiative recombination centers in the quantum well regio... | 07/25/1995 |
| 5434403 | Method and apparatus for reading bar codes with a television camera A bar code (14) on an object (12) is read a distance from the object by a television camera. The output signal of the camera is thresholded to obtain a binary signal indicative of the image information associated with at least one scan line. This binary s... | 07/18/1995 |
| 5434876 | Article comprising an optical waveguide laser We have discovered that at least some optical waveguide lasers such as Er-doped fiber lasers are subject to excessive output amplitude fluctuations, including severe fluctuations when the laser is subjected to mechanical shock. We have determined that the... | 07/18/1995 |
| 5413954 | Method of making a silicon-based device comprising surface plasma cleaning A novel vapor phase Si cleaning process comprises simultaneous exposure of the Si surface to a flux of neutral atomic hydrogen and to a flux of ionized particles. The former flux is substantially derived from a plasma, typically a microwave plasma, that i... | 05/09/1995 |
| 5412716 | System for efficiently powering repeaters in small diameter cables A system of impedance matching is provided to match the total impedance of the cable system to the total impedance of the powered elements such as the repeaters. The source impedance of the power supplies may be considered as part of the cable impedance. ... | 05/02/1995 |
| 5406620 | Method of allocating international transit traffic among a plurality of carriers in a terminating country Disclosed is a system for allocating international transit calls among a plurality of carriers in a terminating country in accordance with routing information that has been previously specified by the originating carrier. Originating carriers may select o... | 04/11/1995 |
| 5402516 | Optical fiber apparatus Optical fiber and cable performance are assured by a category of UV-cured polyurethane acrylates. Low cost is the consequence of use of the polycarbonate oligomer. Good performance and long life are ascribed to other ingredients of the coatings. Dependenc... | 03/28/1995 |
| 5387269 | Methods for making planar waveguides with removal of a sacrifical member which surrounds the core An optical waveguide is made by forming successively of light transmitting material a first clad layer (13), a core layer (15) and a second clad layer (18). The core layer has a higher refractive index than that of the first and second clad layers such th... | 02/07/1995 |
| 5384810 | Modulo decoder A high-speed convolutional decoder is constructed by performing the transition, or branch, metric calculations in reference to a subset of a constellation, which comprises a plurality of subsets. In addition, any subset can be chosen as the reference subs... | 01/24/1995 |
| 5384826 | Distributed packetized switching cellular radio telephone communication system with handoff A cellular switching system and architecture is described in which the switching associated with a call originated within one cell but now serviced within another cell is distributed among base stations which are interconnected with each other through a l... | 01/24/1995 |
| 5384806 | Modem with time-invariant echo path An ISDN modem. The modem includes an independent clock which controls the modem's input and output filters and two dependent clocks whose rates are functions of the independent clock and which are synchronized with external timing signals. When a dependen... | 01/24/1995 |
| 5380398 | Method for selectively etching AlGaAs A method for semiconductor device fabrication that uses a mixture of SiCl4, CF4, O2, and He to selectively etch GaAs with respect to AlGaAs. Etch selectivities greater than 300:1 are obtained.... | 01/10/1995 |
| 5373149 | Folding electronic card assembly A PCMCIA wireless credit card modem is fabricated using two credit card sized sections interconnected by a hinge. The first section contains modem circuitry, and the second section contains an antenna and radio circuitry. The two sections form a 90 degree... | 12/13/1994 |
| 5373248 | Transconductor employing differential pair composite field effect transistors A transconductor includes first and second differential pair compound transistors coupled between a first reference node and a common node. The compound transistors are commoned to each other at a common node. A single current source is coupled between th... | 12/13/1994 |
| 5372088 | Crystal growth method and apparatus In a VGF crystal growth method, the configuration of the outer periphery of the seed crystal (15) has the same dimensions as the configuration of the inner surface of the major portion of the crucible (12).... | 12/13/1994 |
| 5370237 | Method and apparatus for attaching connectors to a cable A conductor handling apparatus uses a rotating disk to move a single conductor to a first position on a path where a conductor identifier is located. The conductor identifier identifies the conductor by completing a circuit used to detect a signal on the ... | 12/06/1994 |
| 5369519 | All-optical timing restoration Timing restoration for a series of input pulses is performed optically in a transmission or switching system, using a nonlinear material with negligible walk-off that also receives an essentially orthogonally polarized series of reference pulses. In the n... | 11/29/1994 |
| 5367336 | Truncation error correction for predictive coding/encoding Apparatus for eliminating the truncation errors associated with a multiplicative leak factor employed in a predictive coding arrangement adds a temporally varying control signal that affects the leak factor multiplication output. Specifically, in one embo... | 11/22/1994 |
| 5367539 | Digital block processor for processing a plurality of transmission channels in a wireless radiotelephony system A digital block receiver system, in a cellular/wireless FM radiotelephony system, receives and heterodyne a block of cellular/wireless receive channels to a very low block IF signal by analog processing. This block IF signal is applied to a precision high... | 11/22/1994 |
| 5367586 | Optical delay line A variable optical delay line which can delay an optical signal by a selected interval of time comprises an input wavelength router connected to an output wavelength router by means of optical waveguides of different lengths. A wavelength shifter coupled ... | 11/22/1994 |
| 5367589 | Optical fiber package A package that protects an optical fiber from strain or controls the strain to which the fiber is subjected for a desired effect and a method for making the package are disclosed. The package is a sleeve with an internal passage in which a portion of an o... | 11/22/1994 |
| 5366851 | Device fabrication process The sensitivity and dry etching pattern control of chemically amplified resists used in the production of devices such as electronic devices is substantially enhanced while image quality is improved through use of a specific expedient. In particular, the ... | 11/22/1994 |
| 5366557 | Method and apparatus for forming integrated circuit layers A method of forming a planarized or smoothed dielectric or other material layer upon a partially fabricated integrated circuit is disclosed. Conventional planarization techniques involve deposition of a dielectric or other material layer followed by aniso... | 11/22/1994 |
| 5366924 | Method of manufacturing an integrated circuit including planarizing a wafer A process for planarizing a bonded wafer. The wafer has a layer of exposed oxide thereon which acts as a reference for the grinding and polishing of the wafer. The resulting ground and polished wafer has a thinned, substantially planar, working layer for ... | 11/22/1994 |
| 5367140 | Method for laser welding of optical packages A piezoelectric actuator is used to control the relative positions of a laser and optical fiber during laser welding of components to a base.... | 11/22/1994 |
| 5365528 | Method for testing delay faults in non-scan sequential circuits To detect a delay fault along a signal path of interest (12) in a sequential digital circuit (10), a source flip-flop (14) and a destination flip-flop (16), proximate the beginning and end of the path, respectively, are designated in the circuit. Next, th... | 11/15/1994 |
| 5365524 | Establishing telecommunications call paths between clustered switching entities In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample ... | 11/15/1994 |
| 5365430 | Method for parsing images Parsing of partially orderable sets of symbols is achieved by first forming a total order of the given terminal symbols. The relationships between the terminal symbols are formulated, and the given grammar is broken up into a set of production rules. Base... | 11/15/1994 |
| 5364836 | Article comprising a superconductor/insulator layer structure, and method of making the article Disclosed is an article that comprises a superconductor-insulator (s-i) layer structure. The superconductor material has nominal composition Ba1-x Mx BiO3-y (M is K, Rb, or K and Rb, 0.35 | 11/15/1994 |
| 5364472 | Probemat cleaning system using CO2 pellets A system for cleaning test probes attached to a probe mat fixture by propelling CO2 pellets at the test probes, by rotating the fixture so that the pellets impact different sides of the test probes, and by providing electrostatic protection for... | 11/15/1994 |
| 5364427 | Manufacture of optical fiber using sol-gel Bent sol-gel produced tubing is straightened by drawing, with tensile force and operating temperature to result in minimal plastic flow, so that size reduction is small. The method is usefully applied to reject recovery in the preparation of overclad tube... | 11/15/1994 |
| 5365362 | Ultra-high capacity non-soliton optical transmission using optical phase conjugation The present invention provides an apparatus and method for achieving bit rate distance products on the order of 200 Tbits/s-km in non-soliton optical communication using optical phase conjugation. The apparatus and method utilize phase conjugation and adj... | 11/15/1994 |
| 5362575 | Lithographic mask, comprising a membrane having improved strength A membrane is supported at its edge by an annular, tapered skirt structure. The skirt strengthens the attachment of the membrane to the support ring and reinforces the edge region where the membrane would otherwise tend to fail. Stress concentrations are ... | 11/08/1994 |
| 5362585 | Seimconductor integrated circuit fabrication utilizing latent imagery A method to achieve good stepper focus and exposure over an entire wafer for a particular mask level before the start of a product run is described. This method can also be used to produce a characterization of lens field curvature (i.e., a surface of opt... | 11/08/1994 |
| 5362977 | Single mirror light-emitting diodes with enhanced intensity This invention embodies single mirror light-emitting diodes (LEDs) with enhanced intensity. The LEDs are Group III-V and/or II-IV compound semiconductor structures with a single metallic mirror. The enhanced intensity is obtained by placing an active regi... | 11/08/1994 |
| 5363489 | Auxiliary circuit for complementing the signaling of incompatible protocol systems A digital system in which an integrated circuit complements the signaling protocol of non-standard devices so that the non-standard devices can operate and communicate with other devices as if the non-standard device were able to support the signaling pro... | 11/08/1994 |
