Mitov
Iliya Mitov, Vidin BG
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20140288845 | Technique for Real-Time Removal of Power Line Interference in ECG - A technique for real-time removal of power line interference (PLI) in electrocardiograms (ECG) with sampling rate a relevant integer multiple of the nominal power line frequency (NPLF), comprising band-pass PLI filtering of the ECG, determining expedient weights and weighted Least-Squares parabolic approximating downsampled to the NPLF series of band-pass PLI filtered values. The disclosed technique utilizes only integer arithmetic, includes pre-adjusting for the routine ECG sampling rates, causes negligible ringing and is still accurate in the common occurrences of PLI with deviating from the nominal 60 or 50 Hz frequency and varying amplitude. | 09-25-2014 |
Iliya P. Mitov, Vidin BG
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20110267233 | Technique for Determination of the Signal Subspace Dimension - A technique for determination of the signal subspace dimension by using the ratios between the squared singular values of the processed data matrix and of its sum with an auxiliary matrix composed of random entries from a normal distribution. The disclosed noise addition technique (NAT) is computationally effective and thoroughly tuned for use in direction of arrival estimation and in exponentially damped sinusoids modeling, causes very few false alarms, operates accurately within or below the SNR limits attained by others techniques and downwards determines a steadily decreasing to zero dimension of the signal subspace. | 11-03-2011 |
Iliya Paunov Mitov, Vidin BG
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20080310477 | Filled hotwire elements and sensors for thermal conductivity detectors - Hotwire elements for thermal conductivity detectors, consisting of one or two individual nickel filaments with more than 200 ohm resistance at 20° C. and finer than 5 micrometers coating of polytetrafluoroethylene, wound with homogeneously distributed interspaces into a filled up to at most ⅔ of its volume gas-permeable spherical or cylindrical body. Relevant hotwire sensors for thermal conductivity detectors, each comprising a wound on a holder filled element enveloped by fixed fillers forming a symmetric to it built-in cavity with a gas inlet and an outlet surrounding the element holder. Radii of the filled elements and their cavities are in proportion, at which minimum electric current is needed for heating the elements to desired temperature. | 12-18-2008 |
Michel Mitov, Toulouse FR
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20090098313 | Method of Producing a Liquid Crystal Material that Reflects More than 50% of Non-Polarised Incident Light - The invention relates to a method of producing a liquid crystal material. The inventive method is characterised in that it comprises the following steps consisting in: applying a first treatment to a liquid crystal mixture having a helical structure comprising a first non-photoreactive liquid crystal (A) and a second photoreactive liquid crystal (B), said first treatment modifying a handedness of the helix of the mixture; and applying a second treatment to the mixture such that the second liquid crystal (B) forms a polymer network, said second treatment being performed during all or part of the first treatment such that the liquid crystal material retains a memory of the modifications to the helix and the entire volume of the material has both a right-handed and left-handed helical structure. The invention also relates to a liquid crystal device comprising a liquid crystal material consisting of at least one liquid crystal having a helical structure, which is characterised in that the entire volume of the material has both a right-handed and left-handed helical structure, such that the device has a reflection rate of more than 50%. | 04-16-2009 |
20090128744 | Method for Producing a Liquid Crystal Material Having a Broadened Light Reflection Band - The invention relates to a method of producing a liquid crystal material that can be addressed by an electric field. The inventive method is characterised in that it comprises the following steps consisting in: forming a liquid crystal mixture having a helical structure comprising a first non-photoreactive liquid crystal and a second photoreactive liquid crystal, said first liquid crystal comprising first chiral liquid crystal molecules and having a positive dielectric anisotropy and said second liquid crystal being in a concentration of less than or equal to 5% of the mixture; applying a first treatment to the liquid crystal mixture, said first treatment being performed at a constant temperature and modifying a pitch of the helix of the mixture; and applying a second treatment to the mixture, such that the second liquid crystal forms a polymer network, said second treatment being performed during all or part of the first treatment such that the liquid crystal material retains a memory of the modifications to the pitch of the helix. The invention also relates to a liquid crystal device comprising a liquid crystal material that is produced using the inventive method. | 05-21-2009 |