Abstract: Systems and methods for implementing improved disk caching in a programmed computer. Improved disk caching is achieved through apparatus and methods that permit the designation of files or types of files as memory-resident, transient, or normal (i.e., neither memory-resident or transient). The disk blocks associated with a memory-resident file are loaded immediately into cache memory in whole or in part, or are loaded on a block-by-block basis as they are accessed. The blocks of a memory-resident file remain in cache until the file is designated not memory resident, whereupon the blocks become purgeable, or until cache size limits force the removal of blocks from the cache. The blocks are purged immediately in whole or in part, or displaced gradually as blocks from other memory-resident files displace them. The blocks of a transient file are maintained in cache for a shorter duration before removal, freeing resources to cache other blocks.
Abstract: Disclosed is a novel structure and process for detecting protocol errors on a communications bus. According to one aspect of the invention, a protocol error detector comprises a physical error detector, a sequential error detector, and a logical error detector, each detecting physical, sequential, and logical protocol violations, respectively, and signaling a bus transaction error when a protocol violation is detected. In one embodiment, the protocol error detector substantially simultaneously checks each bus transaction for physical, sequential, and logical protocol violations. In another embodiment, the protocol error detector signals a detected bus transaction protocol violation substantially coincident with the bus transaction.
Abstract: This invention relates to a method and apparatus for providing a coding competition. In one embodiment, a method for providing a coding competition includes transmitting a coding problem to contestants, receiving computer code created by a contestant, determining a response of the computer code to test data, and evaluating the response of the computer code to the test data. In another embodiment, a method for evaluating a skill level of a contestant includes electronically communicating a coding problem to contestants, electronically receiving a software program in response to the coding problem from one of the contestants, evaluating the received software program, awarding points to the contestant based on the received software program, and determining a rating for the contestant for the competition based on the number of points awarded to the contestant.
Abstract: The pressure gauge spring is a responsive and easy to manufacture gauge for connection to a pressure source. The spring assembly comprises a coiled hollow tube having a first end and a second end with a body portion therebetween, the hollow tube adapted to produce a displacement of the second end in response to a change in said pressure source to which said first end is connected. The second end of the body portion is sealed. The body portion of the spring assembly has a first longitudinal portion and a second longitudinal portion extending from proximate to said first longitudinal portion to said second end and substantially uniformly compressed along the second longitudinal portion to reduce volume thereby. A transition area is disposed between said first end and said first longitudinal portion of said hollow tube, and is compressed so as to form a continuous longitudinally extending ridge along said transition area.
Abstract: Granulated papermaking sludge is combined with plastic to form composite materials that may be shaped into structural and non-structural articles.
Type:
Grant
Filed:
July 13, 2001
Date of Patent:
July 6, 2004
Assignee:
Kadant Composites Inc.
Inventors:
Yiannis A. Monovoukas, Steven J. Anderson, David Leeman, Anatole A. Klyosov, George P. Philippidis
Abstract: The present invention relates to systems and methods for examining a sample using a substantially monostatic, substantially confocal optical system comprising transmitting optics that focus an illuminating light upon the sample and receiving optics that collect light emitted from the sample following illumination thereof. In certain embodiments, the receiving optics may be arranged circumferentially around the light path traversed by the illuminating light. In certain embodiments, video apparatus may be included to produce images or to align the system in proximity to the target tissue. The systems and methods of the present invention may be directed towards the examination of a body tissue to provide a medical diagnosis.
Type:
Grant
Filed:
June 24, 2002
Date of Patent:
July 6, 2004
Assignee:
MediSpectra, Inc.
Inventors:
Robert Nordstrom, Mark Modell, Alexander Zelenchuk
Abstract: A medical sling is made from material that is in a shape suitable for use in a medical application. One or more cuts are disposed in the material. The width of the sling remains substantially constant when the sling is exposed to substantially longitudinal tensioning force in connection with its implantation inside the body of a patient. The cuts on the sling provide open areas to permit tissue ingrowth and crosslinking when the sling is implanted inside the body of the patient.
Abstract: In one aspect the invention relates to a high bandwidth shallow mesa semiconductor photodiode responsive to incident electromagnetic radiation. The photodiode includes an absorption narrow bandgap layer, a wide bandgap layer disposed substantially adjacent to the absorption layer, a first doped layer having a first conductivity type disposed substantially adjacent to the wide bandgap layer, and a passivation region disposed substantially adjacent to the wide bandgap layer and the first doped layer.
Abstract: In one embodiment, the invention is directed to methods and system for converting an analog signal to digital samples for transmission over a communication network, and for converting digital samples received over a communication network to an analog signal. According to one feature, the system of the invention generates encoding and decoding master clocks from local oscillators, thus enabling the system of the invention to operate in environments where reliable timing signal are not available from the communication network. According to another feature, the system of the invention adjusts the frequencies of the encoding and decoding master clocks based on a connect rate to the communication network.
Abstract: A card may include a photoconductive layer and an electrophoretic layer. The impedance of the photoconductive layer is lowered when struck by light from the light-emitting layer. Where the impedance of the photoconductive layer is lowered, the electrophoretic layer may be addressed by an applied electric field to update an image on the card. The image on a card may be updated by a system of updating an image on a card and a method of updating an image on a card that are presented.
Type:
Grant
Filed:
May 31, 2002
Date of Patent:
June 22, 2004
Assignee:
E Ink Corporation
Inventors:
Robert W. Zehner, Gregg M. Duthaler, Richard J. Paolini, Jr., Ian Morrison
Abstract: The invention is directed to a system and method for non-invasive pipeline inspection. According to one embodiment, the system includes a processor, an analyzer, and a wave launcher. The wave launcher is adapted to transmit an input wideband waveform having a selected input energy into the pipeline along a longitudinal axis, and to receive from the pipeline a reflected component of the input waveform having a reflected energy. The analyzer is adapted to generate the input waveform, and to receive the reflected component of the input waveform from the wave launcher. The processor is adapted to compare the input waveform with the reflected component of the input waveform to determine characteristics.
Type:
Grant
Filed:
September 6, 2000
Date of Patent:
June 15, 2004
Assignee:
The Charles Stark Draper Laboratory, Inc.
Abstract: The present invention relates to a sole with at least one receptacle and at least one stud, which can be releasably mounted within the receptacle by inserting a fastening projection of the stud into the receptacle. The fastening projection includes a first locking member, and the receptacle includes a flexible wall having a second locking member. The flexible wall is deflected when the fastening projection is inserted into the receptacle until the first and the second locking members engage.
Abstract: Methods are provided for detecting an alteration in a target nucleic acid. Methods of the invention are useful for detecting and identifying mutations that are indicative of disease or the predisposition for disease.
Abstract: A transistor having a channel width, W, and a channel length, L, defined by non-rectangular electrodes. The transistor is a thin film field effect transistor having an insulated gate electrode. One of a source and drain electrodes is connected to a display electrode and one is connected to a data line. The source and drain electrodes can be interdigitated to provide a desired W/L ratio. The gate is connected to a select line. An overlap region between a display electrode and a select line for another pixel defines a capacitor. The transistor is fabricated to be situated behind the display electrode so as to maximize an aperture ratio. The design enables the use of conventional printing methods, such as screen printing, ink jet printing, printing through a stencil, flexo-gravure printing and offset printing.
Type:
Grant
Filed:
January 30, 2003
Date of Patent:
June 15, 2004
Assignee:
E-Ink Corporation
Inventors:
Karl R. Amundson, Gregg Duthaler, Paul S. Drzaic
Abstract: A semiconductor structure including a first substrate, and an epitaxial layer bonded to the substrate. The epitaxial layer has a threading dislocation density of less than 107 cm−2 and an in-plane lattice constant that is different from that of the first substrate and a second substrate on which the epitaxial layer is fabricated. In another embodiment, there is provided a method of processing a semiconductor structure including providing a first substrate; providing a layered structure including a second substrate having an epitaxial layer provided thereon, the epitaxial layer having an in-plane lattice constant that is different from that of the first substrate and a threading dislocation density of less than 107 cm−2; bonding the first substrate to the layered structure; and removing the second substrate.
Abstract: Disclosed are apparatus for a block and tackle window balance including a terminal clip to be incorporated in single and double hung window assemblies. In one embodiment the terminal clip includes a first end portion defining an opening for passing a terminal end of a cord therethrough, a second end portion disposed remotely from the first end portion, and an intermediate portion including a hook and extending between the first and second end portions.
Type:
Grant
Filed:
August 23, 2002
Date of Patent:
June 8, 2004
Assignee:
Amesbury Group, Inc.
Inventors:
Gary R. Newman, Lawrence J. VerSteeg, Stuart J. Uken
Abstract: Disclosed herein is a method of treating mammalian, for example, human, skin afflicted with a sebaceous follicle disorder, for example, acne. The method involves cooling an exposed surface of a region afflicted with the disorder and applying energy, for example, energy from a coherent or incoherent light source, to the region. The applied energy reduces the size and/or density of lesions associated with the disorder in the treated region, and can reduce or otherwise alleviate lesion-associated skin inflammation in the treated region. Cooling preserves the surface, for example, epidermis, of the skin. The method, therefore, is effective at treating the disorder while at the same time avoiding or minimizing thermal damage to the exposed surface of the skin.
Abstract: The invention relates to a method and system for wavelength stabilization of a broadband optical source. The method and system are based on utilizing an optical power divider to generate two optical signals for each of the broadband source and a reference wavelength source. The difference in the power ratio of the two optical signals derived from the broadband source and the power ratio of the two optical signals derived from the reference wavelength source is determined. Because the power ratios are similarly affected by component aging and changes in environmental factors such as temperature and incident radiation, the difference in the power ratios can be used to adjust the wavelength of the broadband source so that its center wavelength is stabilized to the center wavelength of the reference source.
Type:
Grant
Filed:
December 14, 2001
Date of Patent:
June 1, 2004
Assignee:
The Charles Stark Draper Laboratory, Inc.
Inventors:
Richard E. Stoner, Jacques P. Govignon, William P. Kelleher, Stephen P. Smith, Reinhardt Leon Willig
Abstract: Method and system for processing and evaluating data from combination chromatographic and mass spectrometric data. The methods and system comprise data smoothing and determination of an quality factor for a chromatogram of a data set based on a determined entropy value. In one embodiment, the methods and system further comprise data baseline correction prior to entropy value determination. In a further embodiment, a correlation is determined between chromatograms processed according to the invention and one or more chromatograms of one or more data sets. Preferably, said correlation is performed using a multivariate analysis.
Type:
Grant
Filed:
August 2, 2001
Date of Patent:
June 1, 2004
Assignee:
Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk
Onderzoek TNO