6009results about How to "Accurate estimate" patented technology

A method and apparatus for the transcutaneous monitoring of blood gases generally comprises a blood gas data acquisition device, a vacuum source and a blood gas transducer unit. The blood gas transducer unit is adapted for application to a patient's skin and administration of a local vacuum at the area of patient application. It further comprises an electrochemical blood gas transducer, well known to those of ordinary skill in the art, which is disposed entirely within the local vacuum at the area of patient application. The vacuum source is placed in fluid communication with the blood gas transducer unit, through a hydrophobic membrane filter for safety purposes, in order to induce a condition of hyperperfusion in the locality of the electrochemical blood gas transducer. Under the control of a microcontroller, or equivalent means, the blood gas acquisition device is then utilized to capture a measure of skin surface oxygen or carbon dioxide pressure. The microcontroller can then utilize this measure to arrive at an estimate of arterial partial pressure of oxygen or carbon dioxide, accordingly. Because vacuum induced perfusion produces the requisite condition of hyperperfusion without local heating and, therefore, without acceleration of the local metabolic function, the present invention results in more accurate than previously available estimates of partial pressure blood gas pressures and does so while eliminating a significant risk for injury to the patient.

Techniques to estimate the position of a wireless terminal. In a method, the identities of a number of transmitters (e.g., BTSs) to be used to estimate the position are initially received. Expected areas for these transmitters are then determined. The expected area associated with each transmitter is indicative of an area where the terminal is likely to be located given that the signal from the transmitter is received by the terminal. Each expected area may comprise a location (e.g., the expected area center) to be used as an estimated position of the terminal and an uncertainty (or error estimate) associated with that estimated position. The expected areas for the transmitters are then combined (e.g., based on a weighted average) to determine a combined expected area, which is then provided as the estimate of the position of the terminal.

An object of the invention is to calibrate an upper pyrometer for indirectly measuring a substrate temperature at the time of epitaxial growth in a comparatively short time and with accuracy to thereby improve the quality of an epitaxial substrate. After calibrating an upper pyrometer by a thermocouple mounted to a temperature calibrating susceptor, a measured value of a lower pyrometer is adjusted to a calibrated value of the upper pyrometer. Then, a correlation line between substrate temperature indirectly measured by the upper pyrometer at the time of epitaxial growth onto a sample substrate and haze of a sample substrate measured immediately after epitaxial growth is set to indirectly measure a substrate temperature by the upper pyrometer at the time of epitaxial growth onto a mass-production substrate. Moreover, substrate temperature at the time of epitaxial growth onto the mass-production substrate is estimated by applying the haze of the mass-production substrate measured immediately after epitaxial growth to the correlation line and then a measured temperature of the upper pyrometer is adjusted to the estimated temperature.

One embodiment of the present invention provides a system that reduces annoyance by managing the acoustic noise produced by a device. During operation, the system receives a set of acoustic characteristics for noise-producing components within the device. The system then uses these acoustic characteristics to estimate the acoustic noise being generated by each of these noise-producing components. Next, the system aggregates this set of acoustic noise estimates to produce an aggregate estimate for the acoustic noise produced by the device. The system then analyzes this aggregate estimate using an acoustic annoyance model to determine the acoustic annoyance level. The system then adjusts a setting in the device to manage the acoustic annoyance level produced by the device.

A method and system for allocating bandwidth in a wireless communications network includes a geo-location tool and an allocation engine. The geo-location tool is operable to receive data for a wireless communications network that includes a plurality of geo-location areas and to estimate bandwidth parameters for a geo-location based on the data. The allocation engine is operable to allocate bandwidth in the geo-location area based on its bandwidth parameters.

A system drives one or plurality of LEDs regulating their brightness by controlling LEDs average current or voltage. The system includes a switching power converter and an integrated digital regulator with at least one of electrical, thermal and optical feedbacks. The regulator is constructed as a hysteretic peak current mode controller for continuous mode of operation of the power converter. For discontinuous mode of operation of the power converter a pulse averaging sliding mode control is being used. Average LED current is measured by integrating LED pulse current at off time and hysteretically adjusting on time of the power switch. Input battery is protected from discharging at abnormally low impedance of the output.

A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be used to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.

Various methods for improving the use of model based prediction of future blood glucose control in a patient having diabetes are described. A system for processing diabetes related information, including glucose information, for accurately predicting future glucose levels as a function of glucose data, carbohydrate intake, insulin delivery history and exercise history and then providing recommendations related to the predicted future glucose levels, is also described.

Arrangement for obtaining information about objects in an environment around a vehicle, e.g., in blind spots of the driver of the vehicle, including one or more light emitting components arranged on the vehicle for emitting infrared light into the environment around the vehicle and receivers arranged on the vehicle for receiving infrared light from the environment around the vehicle. The information about the objects is obtained based on analysis of the received infrared light by a processor, e.g., the distance between the vehicle and the object, the velocity of the object and the identity of the object. Pattern recognition techniques are preferably used to obtain the desired information. Control of the vehicle can be effected based on the detection of particular objects and their position and velocity, e.g., an audio or visual warning device or a steering wheel control device.

Electronic advertisements and other types of electronic information are distributed based on user profiles and in particular, collections of widgets. User profiles may be generated based on a combination of user entered information and information inferred or derived from user behavior and interaction patterns. The use and collection of various widgets may also be recorded by a user profile to determine a user's preferences and interests. An advertisement may be distributed by segmenting a user population according to user profile information and one or more attributes of the advertisement. Users may further interact with the widgets in a variety of ways including requesting additional information about the advertised product or service and/or requesting communications with an advertiser without compromising their privacy.

The system describes a collaborative machine social network system with several elements. There is at least one system participant which communicates with the network. The participant's communications include short bursts of information not directed to a particular recipient but rather the network as a whole. The network further includes propagator nodes and integrator nodes to process communications from participants.

A method for individualized management of diabetes in insulin-dependent patients provides a period of evaluation as the patient adheres to a structured pattern of eating, sleeping, and physical activity. Glucose is monitored with a continuous glucose monitoring system, insulin doses are metered, carbohydrate consumption is quantified, and glucose, carbohydrate, and insulin data are collected and analyzed. Insulin dosage is adjusted in three steps: (1) an insulin dosage is estimated from conventional formulas, (2) adjustments are made according to the patient's clinical specifics, and (3) further insulin dose adjustments are made according to glucose data obtained during the evaluation period. By the end of the evaluation period, substantially normal glucose values are achieved, and quantitative relationships from data are calculated that are then applied to determine insulin dosages for an ensuing period of therapy. By this method, diabetic patients achieve a near normal glycemic profile, and without significant occurrence of hypoglycemic episodes.

A method comprises processing M subband communication signals and N target-cancelled signals in each subband with a set of beamformer coefficients to obtain an inverse target-cancelled covariance matrix of order N in each band; using a target absence signal to obtain an initial estimate of the noise power in a beamformer output signal averaged over recent frames with target absence in each subband; multiplying the initial noise estimate with a noise correction factor to obtain a refined estimate of the power of the beamformer output noise signal component in each subband; processing the refined estimate with the magnitude of the beamformer output to obtain a postfilter gain value in each subband; processing the beamformer output signal with the postfilter gain value to obtain a postfilter output signal in each subband; and processing the postfilter output subband signals to obtain an enhanced beamformed output signal.

A traffic information prediction system, including a traffic information prediction apparatus, of the present invention comprises travel status measuring means for measuring a travel status of a vehicle and accumulating it as travel record information, and traffic information predicting means for predicting traffic information on a route on the basis of the travel record information and statistical traffic information to predict an arrival time to any place on a route containing the destination. The traffic information predicting means compares a traveling trace based on the statistical traffic information and the traveling trace based on the travel record information to calculate the degree of progress of the travel record based on the statistical traffic information, and correct the traveling trace based on the statistical traffic information on the basis of the degree of progress.

A system and method are provided for obtaining data that may be used to generate images of a brain or other bodily organ. The system can include a pair of detecting arrangements and a collimating arrangement associated with each detecting arrangement. A first collimating arrangement can include a cone-beam collimating arrangement having a focal point located within the brain or other organ being imaged. A second collimating arrangement can include a fan-beam collimating arrangement having a focal length selected such that the organ being imaged lies within its field of view to ensure data sufficiency. Cone-beam collimating arrangements having improved hole geometries can also be utilized to provide further increases in imaging sensitivity.