Configurable digital wireless and wired communications system architecture for implementing baseband functionality
The present invention comprises a configurable multiprocessor communications architecture which performs various digital communications functions and which is configurable for different digital commun... Read More
Inventors: Asghar, Saf M.; Spak, Michael E.;, Assignee: Advanced Micro Devices, Inc. (Sunnyvale, CA) |
Adaptive digital radio communication system
An illustrative embodiment of the adaptive digital radio communications system according to the principles of the present invention is described below. Here we disclose how the architecture of an ada... Read More
Inventors: MacLellan, John Austin; Shober, R. Anthony; Wright, Gregory Alan;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Programmable, reconfigurable DSP implementation of a Reed-Solomon encoder/decoder
This invention relates to programmable, reconfigurable implementations of Reed-Solomon encoder/decoder devices that could be cast into one of three separate designs. The first design is a stand-alone ... Read More
Inventors: Wolf, Tod D.;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Method and apparatus for transcoding coded picture signals from object-based coding to block-based coding
The invention provides a transcoder for transcoding a coded object-based picture signal that represents a picture to a coded block-based picture signal that also represents the picture. The coded obje... Read More
Inventors: Apostolopoulos, John G.;, Assignee: Hewlett-Packard Development Company LP (Houston, TX) |
Optimizing repeaters positioning along interconnects
A preferred embodiment of the present invention provides an aspect of interconnect design for optimizing delay characteristics of interconnects. The preferred embodiment further provides a method for ... Read More
Inventors: Muddu, Sudhakar; Sarto, Egino;, Assignee: Silicone Graphics Inc. (Mountain View, CA) |
Method and apparatus for placing repeaters in a network of an integrated circuit
OF THE PREFERRED EMBODIMENT(S) FIG. 1 is a schematic diagram of a network or net 100 that is used to illustrate repeater insertion in accordance with the present invention. As shown, a root or source... Read More
Inventors: Chowdhury, Salim U.; Bearden, David Ray;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Parasitic element extraction apparatus
It is an object of the present invention to solve at least the problems in the conventional technology. The parasitic element extraction apparatus extracts parasitic elements based on logical netlist ... Read More
Inventors: Tanaka, Genichi;, Assignee: Renesas Technology Corp. (Tokyo, JP) |
Voltage controlled oscillator including voltage controlled delay circuit with power supply noise isolation
Accordingly, one object of the present invention is a VCO which is less sensitive than prior art VCOs to power supply noise. Another object of the present invention is a delay circuit useful in a VCO ... Read More
Inventors: Zhang, Zhongxuan; Du, He;, Assignee: Cirrus Logic, Inc. (Fremont, CA) |
Bist architecture for measurement of integrated circuit delays
The IC to be tested is provided with, in one embodiment, a two-wire test bus, which passes near each circuit node of interest. Each node which is an input to a delay path of interest selectively rece... Read More
Inventors: Sunter, Stephen K.; Nadeau-Dostie, Benoit;, Assignee: Logic Vision, Inc. (San Jose, CA) |
Oscillator for measuring on-chip delays
FIG. 2 is a schematic diagram of an oscillator 200 configured, in accordance with the invention, to include a pair of similar test circuits 210A and 210B. Test circuits 210A and 210B might be any sig... Read More
Inventors: Alfke, Peter H.;, Assignee: Xilinx, Inc. (San Jose, CA) |
Method and system for measuring signal propagation delays using ring oscillators
FIG. 2 is a schematic diagram of a conventional tester 200 connected to an FPGA 210 that has been configured to implement an oscillator and to determine the period and the high and low duty cycles of... Read More
Inventors: Patrie, Robert D.; Wells, Robert W.; Young, Steven P.; Kingsley, Christopher H.; Chung, Daniel; Conn, Robert O.;, Assignee: Xilinx, Inc. (San Jose, CA) |
Monitor TEG test circuit
OF THE PREFERRED EMBODIMENTS Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, and more particularly to FIGS. 1-4... Read More
Inventors: Ukei, Toshio; Aoyagi, Hiroshi;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
System, IC chip, on-chip test structure, and corresponding method for modeling one or more target interconnect capacitances
In summary, the present invention comprises a system, an IC chip, a test structure formed on the IC chip, and a corresponding method for modeling one or more target interconnect capacitances. The test... Read More
Inventors: Chen, James C.;, Assignee: BTA Technology, Inc. (San Jose, CA) |
IC substrate noise modeling including extracted capacitance for improved accuracy
An invention is described herein which provides methods and apparatus for modeling noise present in an integrated circuit substrate. This is accomplished by obtaining a doping profile associated with ... Read More
Inventors: Richer, Jean-Michel;, Assignee: Simplex Solutions, Inc. (Sunnyvale, CA) |
Method for performing coupling analysis
Deterministic evaluation of coupling noise voltage is a function of many physical and electrical parameters such as wiring level, widths, spacing, net topologies, drv impedance and slew rates. This ev... Read More
Inventors: Dansky, Allan H.; Bowen, Michael A.; Camporese, Peter J.; Deutsch, Alina; Smith, Howard H.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Cell-based noise characterization and evaluation
OF THE INVENTION Aspects of the present invention include methods and apparatus for designing an integrated circuit. In the following description, specific information is set forth to provide a thoro... Read More
Inventors: Savithri, Nagaraj N.; Apostol, John; M.-Hill, Anthony;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Adaptive test program generation
It is an advantage of some aspects of the present invention that an event handling mechanism is provided in a test program generator, which can deal with disparate exceptional situations that may be e... Read More
Inventors: Adir, Allon; Emek, Roy; Marcus, Eitan;, Assignee: International Business Machines Corporation (Armonk, NY) |
Hybrid interface for packet data switching
The invention allows parallel transfer of data without the limitation imposed by the phase difference of the different signal paths. The invention converts a byte (typically 8 bits) into a 9 bit data ... Read More
Inventors: Ngai, Henry P.;, Assignee: Network Excellence for Enterprises Corp. (Irvine, CA) |
System and method for approximating the coupling voltage noise on a node
OF THE PREFERRED EMBODIMENT Having summarized various aspects of the present invention, reference will now be made in detail to the description of the invention as illustrated in the drawings. While ... Read More
Inventors: McBride, John G;, Assignee: Hewlett-Packard Company (Palo Alto, CA) |
Method and system for testing interconnected integrated circuits
The problems identified above are addressed by a system, device, and method for dynamically testing integrated circuits. The system includes a first integrated circuit including input pins, output pin... Read More
Inventors: Tanner, Howard Carl;, Assignee: International Business Machines Corporation (Armonk, NY) |
Pulse code sequence analyzer
It is an object of the invention to provide pulse code sequence apparatus and a method for determining errors occurring in transmitters and receivers and in data transmission between the transmitters/... Read More
Inventors: Katsman, Vladimir; Nottenburg, Richard N.;, Assignee: Multilink Technology Corp. (Somerset, NJ) |
System and method for efficient analysis of transmission lines
OF PREFERRED EMBODIMENTS The present invention provides systems and methods for analyzing electrical circuits with transmission lines. In particular, the present invention provides ways for accountin... Read More
Inventors: Deutsch, Alina; Feldmann, Peter; Ruehli, Albert E.; Smith, Howard Harold;, Assignee: International Business Machines Corporation (Armonk, NY) |
Optical calculating apparatus
It is an object of the invention to provide an optical calculating apparatus which can eliminate the above-discussed technical problems, perform operations by optically controlling incident light and ... Read More
Inventors: Yamaguchi, Akira;, Assignee: Sharp Kabushiki Kaisha (Osaka, JP) |
High frequency source having heterodyned laser oscillators injection-locked to a mode-locked laser
OF THE PREFERRED EMBODIMENTS The invention is based on achieving a high-degree of correlation between the phase fluctuations of two independent single-frequency lasers, operating at two slightly diff... Read More
Inventors: Logan, Jr., Ronald T.;, Assignee: California Institute of Technology (Pasadena, CA) |
Light modulation system including a superconductive plate assembly for use in a data transmission scheme and method
The present invention provides an apparatus and method for the modulation of light. A layer of superconducting material is placed in the optical path of a light source. The light source emits light wi... Read More
Inventors: Puzey, Kenneth A.;, Assignee: |
Signal generation using optical pulses
It is therefore a principal object of this invention to utilize optical pulse technology for generating wide-band analog signals. It is another principal object of this invention to generate wide-band... Read More
Inventors: Boroson, Don M.;, Assignee: Massachusetts Institute of Technology (Cambridge, MA) |
Method, device, and system for controlling wavelength of optical signal
It is therefore an object of the present invention to prevent a degradation in transmission quality due to wavelength changes of an optical signal. Specifically, it is an object of the present inventi... Read More
Inventors: Utsumi, Atsuhiko;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Heterojunction bipoplar mixer circuitry
What is claimed is: 1. Mixer circuitry comprising: a semiconductor body, such body having formed therein circuitry comprising: an oscillator having a heterojunction bipolar transistor and adapted to p... Read More
Inventors: McNamara, Brian J.; Wendler, John P.; Tabatabaje-Alavi, Kamal;, Assignee: Raytheon Company (Lexington, MA) |
Optical upconverter apparatuses, methods, and systems
Apparatuses and methods of the present invention address the above need by providing optical communication systems that include transmitters that can provide for pluralities of information carrying wa... Read More
Inventors: Price, Alistair J.;, Assignee: Corvis Corporation (Columbia, MD) |
Electrooptic modulator for frequency translation applications
What is claimed is: 1. An optical modulator, comprising: a splitter/combiner light coupler including first, second and third ports, said splitter/combiner light coupler dividing light applied to said ... Read More
Inventors: Tiemann, Jerome Johnson; Frey, Richard Louis; Lotshaw, William Taylor;, Assignee: Lockheed Martin Corp. (Marietta, GA) |
Fault Detection 
