Patent application number | Description | Published |
20100019967 | Method and apparatus for determining location - A method and apparatus for determining location parameters by processing time and location datagrams made up of data contained in satellite positioning signals. In one embodiment, time and location datagrams are transferred to a GPS processing facility. In one embodiment, a plurality of time and location datagrams are combined. In one embodiment, time and location datagram size is increased, resulting in greater processing gains. In one embodiment, low frequency data overlay data is removed from the time and location datagrams. | 01-28-2010 |
20100019970 | Signal processing techniques for improving the sensitivity of GPS receivers - A system for measuring the pseudo range from a first GPS sensor to a designated navigational satellite, for use in a satellite positioning system (SPS) is comprised of first and second GPS sensors for receiving and recording first and second portions of the signal transmitted by the designated navigational satellite, the recordings referred to as the first and second datagrams; and means for transmitting the first and second datagrams to a datagram processing facility wherein the pseudo range from the first GPS sensor to the designated navigational satellite is extracted. The datagram processing facility for extracting the pseudo range is further comprised of a pseudo range engine for extracting a pseudo range from a datagram originating with said first GPS sensor, the location of which is to be determined, the extraction accomplished with the aid of a perfect reference; and a perfect reference engine for generating a perfect reference from a datagram originating with a second GPS sensor designated for the express purpose of perfect reference generation. The perfect reference reduces the minimum number of satellites required to fix a position from four to three, and further enables the pseudo range engine to recombine multi-path GPS signals. | 01-28-2010 |
20100283672 | Signal processing techniques for improving the sensitivity of GPS receivers - A system for measuring the pseudo range from a first GPS sensor to a designated navigational satellite, for use in a satellite positioning system (SPS) is comprised of first and second GPS sensors for receiving and recording first and second portions of the signal transmitted by the designated navigational satellite, the recordings referred to as the first and second datagrams; and means for transmitting the first and second datagrams to a datagram processing facility wherein the pseudo range from the first GPS sensor to the designated navigational satellite is extracted. The datagram processing facility for extracting the pseudo range is further comprised of a pseudo range engine for extracting a pseudo range from a datagram originating with said first GPS sensor, the location of which is to be determined, the extraction accomplished with the aid of a perfect reference; and a perfect reference engine for generating a perfect reference from a datagram originating with a second GPS sensor designated for the express purpose of perfect reference generation. The perfect reference reduces the minimum number of satellites required to fix a position from four to three, and further enables the pseudo range engine to recombine multi-path GPS signals. | 11-11-2010 |
Patent application number | Description | Published |
20100283673 | Signal processing techniques for improving the sensitivity of GPS receivers - A system for measuring the pseudo range from a target GPS sensor to a designated navigational satellite, for use in a satellite positioning system (SPS) is comprised of multiple GPS sensors for receiving and recording portions of the signals transmitted by designated navigational satellites, the recordings referred to as datagrams; and means for transmitting the datagrams to a datagram processing facility wherein the pseudo range from the target GPS sensor to the designated navigational satellite is derived. The datagram processing facility for deriving the pseudo range is further comprised of a pseudo range engine for deriving a pseudo range from a datagram originating with said target GPS sensor, the location of which is to be determined, the derivation accomplished with the aid of a perfect reference; a perfect reference engine for generating a perfect reference from one or more satellite-specific datagrams: and a strong signal suppression engine for synthesizing satellite-specific datagrams from I/F signals recorded by reference GPS sensors designated for the express purpose of perfect reference generation. The perfect reference reduces the minimum signal strength required to acquire and accurately track GPS satellites at or near the horizon. | 11-11-2010 |
20110080320 | Signal processing techniques for improving the sensitivity of GPS receivers - A system for measuring the pseudo range from a target GPS sensor to a designated navigational satellite, for use in a satellite positioning system (SPS) is comprised of multiple GPS sensors for receiving and recording portions of the signals transmitted by designated navigational satellites, the recordings referred to as datagrams; and means for transmitting the datagrams to a datagram processing facility wherein the pseudo range from the target GPS sensor to the designated navigational satellite is derived. The datagram processing facility for deriving the pseudo range is further comprised of a pseudo range engine for deriving a pseudo range from a datagram originating with said target GPS sensor, the location of which is to be determined, the derivation accomplished with the aid of a perfect reference; a perfect reference engine for generating a perfect reference from one or more satellite-specific datagrams: and a strong signal suppression engine for synthesizing satellite-specific datagrams from I/F signals recorded by reference GPS sensors designated for the express purpose of perfect reference generation. The perfect reference reduces the minimum signal strength required to acquire and accurately track GPS satellites at or near the horizon. | 04-07-2011 |
20110080321 | Signal processing techniques for improving the sensitivity of GPS receivers - The use of multiple GPS sensors provides the conceptual framework for novel techniques for reducing the minimum signal strength required by a GPS assistance system to acquire and accurately track GPS satellites at or near the horizon. A strong signal attenuation system for synthesizing GPS satellite-specific I/F signals, enabling more efficient and effective acquisition of GPS satellites, is disclosed, comprising N+1 reference GPS sensors, each with an omni-directional antenna and front end, for down converting composite GPS satellite signals, and strong signal suppression (SSS) means for synthesizing, from the I/F signals produced by the N+1 reference GPS sensors, a set of one or more I/F signals (corresponding to a set of designated satellites), each with at least N of the strongest potentially-interfering satellite signals suppressed. | 04-07-2011 |
20120081250 | System framework for mobile device location - A method for estimating the location of a beacon from an ensemble of measurements associated with said beacon, where, contained in each measurement, are GPS data from which surfaces of location may be extracted, together with the ID's of beacons detectable at the point of measurement, is disclosed. The method comprises extracting the canonical set of surfaces of location implicit in each of the associated measurements, and determining the estimate of the location of the beacon as the point for which a weighted sum of the squares of the distances to each of the surfaces so extracted is minimized. A system for the compilation of a database of beacon locations from measurements containing a time-stamped recording of the composite GPS signal (which recording is referred to as a datagram), together with the ID's and associated signal strengths of beacons detectable at the point of measurement, is also disclosed. The system comprises GPS signal processing means for extracting, from each time-stamped datagram, the canonic set of surfaces of location, and beacon location estimation means for estimating the location of a beacon from an ensemble of surfaces of location associated with said beacon. | 04-05-2012 |
20120200457 | System framework for mobile device location - A method for estimating the location of a mobile Wi-Fi signal receiver from a database of independently obtained survey data, each survey datum consisting of a surface of location derived from a composite GPS signal, together with a Wi-Fi signature measured concurrently with the GPS signal measurement, is disclosed. The method comprises receiving a Wi-Fi signature, measured and recorded by said mobile. Wi-Fi signal receiver, at the location to be estimated; extracting from the database, an algorithmically-determined subset of surfaces of location, utilizing the Wi-Fi signature recorded by said mobile Wi-Fi signal receiver, and estimating the location of said mobile Wi-Fi signal receiver from said algorithmically-determined subset of surfaces of location. In one embodiment, the algorithmically-determined subset consists of those surfaces of location with Wi-Fi signatures identical to the mobile Wi-Fi signature; and the estimate of the location of said mobile Wi-Fi signal receiver is determined as the point for which the sum of the squares of the distances to each of the surfaces of location included in said algorithmically-determined subset is minimized. | 08-09-2012 |
20140159616 | ADAPTIVE HOLDING CURRENT CONTROL FOR LED DIMMER - A TRIAC dimmer controller for an LED lamp dynamically adjusts the amount of additional current supplied to the TRIAC dimmer based on the TRIAC dimmer operating mode. A TRIAC dimmer current controller continually senses the TRIAC dimmer current loading and determines a TRIAC dimmer operating mode based on the detected current. The TRIAC dimmer controller compares the detected current with a threshold current value called a TRIAC holding current, and adjusts the amount of bleeder current based on the difference between the detected current and the threshold current value. By continually sensing the TRIAC dimmer current loading, the LED controller regulates the amount of bleeder current supplied to the TRIAC dimmer using a single sink current path to satisfy the TRIAC dimmer current demands of multiple TRIAC dimmer operating modes. | 06-12-2014 |
Patent application number | Description | Published |
20080249497 | Osmotically-driven fluid dispenser - Improvements in a mini-osmotic pump and coating compositions are described. The dispensing pump includes an inner fluid-filled bag encased by an osmotic layer and outer, semi-permeable membrane. The inner bag is formed with an arcuate edge at the open end of the bag to inhibit formation of fissures in the outer membrane in this edge region. The coating compositions include cellulose acetate butyrate, cellulose acetate propionate, and polymethylmethacrylate polymers, optionally mixed with ethyl cellulose in acetone based solvent systems. | 10-09-2008 |
20090130204 | Dosage Form Comprising Therapeutic Formulation - A dosage form is disclosed comprising a semipermeable walled container that houses a capsule, which capsule comprises a drug formulation, a piston, and an osmotic composition. The dosage form delivers the drug formulation through a passageway at a controlled rate over a sustained-release period of time up to 24 hours. | 05-21-2009 |
20100159002 | DOSAGE FORM COMPRISING THERAPEUTIC FORMULATION - A dosage form is disclosed comprising a semipermeable walled container that houses a capsule, which capsule comprises a drug formulation, a piston, and an osmotic composition. The dosage form delivers the drug formulation through a passageway at a controlled rate over a sustained-release period of time up to 24 hours. | 06-24-2010 |
Patent application number | Description | Published |
20090087484 | Formulation and dosage form for increasing oral bioavailability of hydrophilic macromolecules - A formulation and dosage form for enhancing the bioavailability of orally administered hydrophilic macromolecules includes a permeation enhancer, a hydrophilic macromolecule, and a carrier such as a nonionic surfactant that exhibits in-situ gelling properties. The formulation is delivered within the GI tract as a liquid having at least some affinity for the surface of the GI mucosal membrane. Once released, it is believed that the liquid formulation spreads across one or more areas of the surface of the GI mucosal membrane, where the carrier of the formulation then transitions into a bioadhesive gel in-situ. As a bioadhesive gel, the formulation presents the hydrophilic macromolecule and the permeation enhancer at the surface of the GI mucosal membrane at concentrations sufficient to increase absorption of the hydrophilic macromolecule through the GI mucosal membrane over a period of time. A dosage form incorporates the formulation and may be designed to provide the controlled release of the formulation within the GI tract over a desired period of time. | 04-02-2009 |
20110229533 | EXTENDED RELEASE DOSAGE FORM - A membrane system comprising an interior wall, a fluid-permeable exterior wall surrounding the interior wall and an internal compartment defined by the membrane system, wherein fluid permeability of the interior wall is responsive to osmolarity of an osmotic core within the internal compartment are disclosed. A controlled release dosage form comprising the membrane system and a process for delivering an osmotically active formulation from an osmotic pump over an extended period of time are also disclosed. | 09-22-2011 |
20140100282 | INTRANASAL ADMINISTRATION OF PHARMACEUTICAL AGENTS FOR TREATMENT OF NEUROLOGICAL DISEASES - Pharmaceutical formulations for treating neurological diseases are described, wherein the formulations comprise a pharmaceutically active agent-transport moiety complex. The formulations are suitable for administration via an intranasal route. Neurological diseases and conditions are associated with reduced brain insulin signaling (i.e., CNS insulin insensitivity), reduced dopaminergic signaling, reduced serotonergic signaling, reduced cholinergic signaling, or reduced GABAergic signaling, and include Alzheimer's disease, Parkinson's disease, epilepsy, neuropathic pain, fibromyalgia, post-herpetic neuralgia, insomnia, or anxiety. Neurological diseases also include cancers of the central nervous system (CNS). | 04-10-2014 |