Petkov
Anton Petkov, Frankfurt Am Main DE
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20150320314 | Medical Device with Optical Transfer of Data and Optical Reading Device for Receiving Such Data - The invention relates to a medical device in combination with an optical reading device comprising at least one sensor, a meter display for displaying a matrix of pixels and a meter control unit adapted for controlling the meter display so that at least one measurement value measured by the sensor and/or a value derived thereof is encoded in an optical machine-readable signal, wherein the optical reading device is adapted to read the optical machine-readable signal from the medical device, to decode the optical machine-readable signal and to generate a message corresponding to the decoded optical machine-readable signal. | 11-12-2015 |
Anton Petkov, Zug CH
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20090187351 | ANALYTE TESTING METHOD AND SYSTEM - Described and illustrated herein is an exemplary method of operating an analyte measurement device having a display, user interface, processor, memory, and user interface buttons. Such method can be achieved by measuring an analyte with the analyte measurement device, displaying a value representative of the analyte, prompting a user to select a flag to associate the flag with the value, and pressing only one of the user interface buttons once to store the flag with the value in the memory of the analyte measurement device. In one embodiment, the testing device is a glucose meter and the analyte being tested is glucose. | 07-23-2009 |
Chavdar Petkov, Scranton, PA US
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20090055207 | Interactive bridal planner - An interactive wedding planner incorporates a number of interactive tabs to keep track of schedules, guest lists, budgets, vendor information, publications and personal notes. It also has the ability to allow communication between users and provides e-mail support. The planner provides a modular general plan complete with deadlines and estimates costs. The user personalizes the general plan to create a personal plan which guides the user through the process. Ongoing actual data is provided to the system to provide reminders and reports of how the user is doing compared to their personal plan. The planner also keeps track of responses of people attending and extrapolates the total number of people attending. It then performs calculations based upon the extrapolated total number attending. | 02-26-2009 |
Darin S. Petkov, Zurich CH
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20150207894 | SYSTEMS AND METHODS FOR ACCESSING AN UPDATE SERVER - Systems and methods for accessing an update server to receive one or more updates for data are provided. In some aspects, a system includes an auto-update module configured to determine whether to access the update server directly or by proxy. If the auto-update module determines to access the update server by proxy, the auto-update module is configured to: transmit a request to a proxy manager module for proxy server data that identifies one or more proxy servers; receive the proxy server data from the proxy manager module in response to the request; and access the update server based on the proxy server data to receive one or more updates for the data. The auto-update module is subject to fewer restrictions in modifying the data than is the proxy manager module. | 07-23-2015 |
Darin S. Petkov, Sunnyvale, CA US
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20100287622 | System and Method for Preventing Proper Execution of an Application Program in an Unauthorized Processor - A system and method for preventing an application program, which is licensed to a customer to be exclusively executed in a processor based on a certain processor design, from being executed properly in unauthorized processors is provided. The system includes a scrambling module and a recovery module. The scrambling module scrambles a selected portion of the application program using an identifier which identifies the authorized processor design. The recovery module adds an unscrambling program to the application program such that when the program is running in a processor, it retrieves a second identifier from the processor and unscrambles the scrambled portion of the application program using the retrieved second identifier. If the second identifier does not correspond to an authorized processor design, the unscrambling operation will incorrectly unscramble the scrambled portion and the application program will not run properly. | 11-11-2010 |
Darin Stamenov Petkov, San Jose, CA US
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20080209181 | Method and System for Automatic Generation of Processor Datapaths - Systems and method for automatically generating a set of shared processor datapaths from the description of the behavior of one or more ISA operations is presented. The operations may include, for example, the standard operations of a processor necessary to support an application language such as C or C++ on the ISA. Such operations, for example, may represent a configurable processor ISA. The operations may also include one or more extension operations defined by one or more designers. Thus, a description of the behaviors of the various standard and/or extension operations that compose the ISA of an instance of a standard or configurable processor is used to automatically generate a set of shared processor datapaths that implement the behavior of those operations. In addition, certain aspects may take one or more operations as well as one or more input semantics and either re-implement the input semantics automatically, or combine the input semantics with each other or with one or more other operations to automatically generate a new set of shared processor datapaths. | 08-28-2008 |
20120185808 | Method and System for Automatic Generation of Processor Datapaths - Systems and method for automatically generating a set of shared processor datapaths from the description of the behavior of one or more ISA operations is presented. The operations may include, for example, the standard operations of a processor necessary to support an application language such as C or C++ on the ISA. Such operations, for example, may represent a configurable processor ISA. The operations may also include one or more extension operations defined by one or more designers. Thus, a description of the behaviors of the various standard and/or extension operations that compose the ISA of an instance of a standard or configurable processor is used to automatically generate a set of shared processor datapaths that implement the behavior of those operations. | 07-19-2012 |
Dejan Petkov, Belgrade RS
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20110004770 | ENCRYPTION SYSTEM THAT PREVENTS ACTIVATION OF COMPUTER VIRUSES - System for preventing activation of computer viruses operates in such a way that all executable files must be kept separated from other files and encrypted when written to Hard Disk Drive or Solid State Drive, with a key that is uniquely assigned to this hardware and entered by user. During the reading procedure all data is decrypted automatically by the hardware with the same key written in this hardware and used only for decryption. Since only regular programs can be installed and encrypted with the key known to the user, viruses and the other malicious software can be kept on Hard Disk Drive or Solid State Drive just in plaintext. This causes only regular programs can be sent into the main memory in plaintext, but viruses cannot, because they are destroyed in decryption procedure. | 01-06-2011 |
Denislav D. Petkov, Sunnyvale, CA US
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20110276938 | POWER SUPPLY OPTIMIZATION FOR ELECTRICAL CIRCUITS DESIGNED OVER THE INTERNET - A method may include receiving an input from an optimization control that indicates a value along a scale, wherein the value is indicative of a design tradeoff between at least optimization for a first parameter of an electrical design and an optimization for a second parameter of the electrical design, wherein the value places an emphasis on the first parameter and an emphasis on the second parameter such that when the value on the scale is closer to the first parameter a larger emphasis is placed on the first parameter of the electrical design and when the value on the scale is closer to the second parameter a larger emphasis is placed on the second parameter of the electrical design. The method may further include choosing components for the electrical design based on the value indicated using the optimization control, the emphases affecting the components selected for the electrical design. | 11-10-2011 |
Filip Petkov, Koln DE
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20150215736 | CREATION OF A GEOFENCE - The invention relates to a method for automatically creating a geofence ( | 07-30-2015 |
Filip Petkov, Koeln DE
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20140025297 | Upgrading Location-Related Data - For a more efficient utilization of data that are relevant to safety and/or mobility, data are read from a plurality of data sources. The data of each data source sets of coordinates of real locations relevant for a respective aspect can be determined. Based on a respective set of coordinates for each of the real locations a respective area is then defined for each of the data sources, and a value assigned to the area is determined. Overlapping areas defined for a respective data source are aggregated so as to obtain non-overlapping areas with at least one assigned value for each of the data sources. The non-overlapping areas are superposed with the assigned values. The result is a value distribution, which reflects an overall situation with regard to the at least two aspects in a real region. An apparatus, a system, a program and a storage medium are configured accordingly. | 01-23-2014 |
George B. Petkov, Pleasanton, CA US
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20110239044 | MANAGEMENT AND TRACKING OF COMPLEX ENTITLEMENT BENEFITS - Methods and systems for management and tracking of complex entitlement benefits are disclosed. For example, a method can include identifying a processing error within a distributed transaction processing system, assessing an impact of the processing error, and determining a recovery strategy to minimize the impact of the processing error. The processing error can be associated with the application of an entitlement to a plurality of transactions. The entitlement can include a defined benefit and a benefit counter. The benefit counter can control a quantity of transactions allowed to receive the entitlement. The impact of the processing error can be assessed in regard to the plurality of transactions. | 09-29-2011 |
20110258027 | POINT-OF-SALE PROMOTIONS - A method and a system to publish a promotion at a point-of-sale are provided. For example, a preliminary selection associated with a purchase from a user may be received. A promotion may be published to the user at a point-of-sale associated with the purchase after the user makes the preliminary selection and before the user finalizes the purchase. The promotion may be based on at least one attribute of past transactions and the preliminary selection. | 10-20-2011 |
20130246196 | SYSTEM AND METHOD TO PROMOTE A PUBLICATION - A method and a system to promote a publication are provided. In example embodiments, data is received from a user that is used to create a publication for placement on a networked-based system. An indication to promote the publication on the networked-based system is received. A user interface through which the user selects an option to promote the publication on the network-based system is presented. The publication is published on the network-based system, whereby the publication is promoted based on the option selected to promote the publication. | 09-19-2013 |
Hristo Petkov, Erlangen DE
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20160105890 | CONCEPT FOR TRANSMITTING AND/OR RECEIVING DATA PACKETS FOR A SYSTEM FOR DETECTING AN EVENT, CORRESPONDING TO AN OBJECT CROSSING OVER A MONITORED LINE - Embodiments relate to a transmitter and/or a receiver for a system for detecting an event which is triggered by an object crossing a monitored line. The transmitter is configured to successively transmit data packets independently of an occurrence of the event. The receiver is configured to receive successive data packets independently of the occurrence of the event. Each data packet comprises information on a number of events which occurred up to a transmission time of the data packet, wherein the transmission times of successive data packets are each located in a predetermined transmission time period. | 04-14-2016 |
Ilia Petkov, Colorado Springs, CO US
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20150353387 | Electrocoagulation Chamber With Atmospheric and Pressurized Flow Regimes - A pressure vessel ( | 12-10-2015 |
Jordan Todorov Petkov, Wirral GB
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20080317695 | Hair Care Compositions - The invention provides a hair care composition comprising a water-soluble, nonionic polymer of ethylene oxide and a water-soluble, nonionic cellulose ether. | 12-25-2008 |
Jordan Todorov Petkov, Bebington GB
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20130084254 | ORAL CARE COMPOSITIONS - The invention provides a non-aerated, foamable oral care composition comprising less than 1.5% anionic surfactant (by total weight anionic surfactant based on the total weight of the composition), abrasive cleaning agent and hydrophobin. The composition is mild to oral mucosa yet exhibits excellent foamability, texture and storage stability. | 04-04-2013 |
20130202539 | ORAL CARE COMPOSITIONS - The invention provides an oral care composition obtainable by: (i) preparing an oil-in-water emulsion by dispersing an oil phase into an aqueous continuous phase, the aqueous continuous phase comprising an oil-in-water emulsifier which is selected from one or more hydrophobins, so that emulsified particles of oil phase are formed which are emulsified with the one or more hydrophobins; and (ii) combining the emulsion so obtained with an oral care base formulation which is suitable for treating the surfaces of the oral cavity. Compositions of the invention demonstrate enhanced deposition of oil phase components onto oral cavity surfaces such as tooth enamel and tooth dentine, and in particular onto damaged surfaces such as scratched and demineralised enamel. | 08-08-2013 |
20130202666 | HAIR TREATMENT COMPOSITION - An aerated composition comprising, surfactant aggregates, perfume and a hydrophobin. | 08-08-2013 |
20140283865 | HAIR CLEANING KIT - A kit for cleansing hair comprising: •a) a dry shampoo, in which the dry shampoo comprises a particulate material, preferably aluminium octenyl succinate starch or rice starch, preferably in the form of an aerosol; and •b) a substrate, preferably a flexible sheet comprising a non-woven material, preferably comprising cellulose fibre or polyester fibre and mixtures thereof, the substrate comprising a surfactant selected from the group consisting of nonionic, anionic, amphoteric and mixtures thereof. | 09-25-2014 |
20140350224 | FOAMED PERSONAL CARE COMPOSITION OBTAINABLE BY AERATING AND HEATING A BASE COMPOSITION - Foamed personal care composition obtainable by aerating a base composition and heating at from 30 to 100° C. for from 10 minutes to 100 hours. The composition comprises a proteinaceous material and is suitable for use in care of the hair. | 11-27-2014 |
Kiril Petkov, Sofia BG
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20150342241 | Method of Reducing E. coli or Salmonella Contamination of Agricultural Products - The present invention relates to a composition comprising lyophilized Lactobacilli and a plant-based food, wherein the composition is substantially free of animal products. The present invention also relates to methods of treating plant-based food by administration of a Lactobacilli and a plant medium composition. Methods of using the Lactobacilli and plant-based food composition to treat | 12-03-2015 |
20150342243 | Method of Reducing E. coli or Salmonella Contamination of Agricultural Products - The present invention relates to a composition comprising lyophilized | 12-03-2015 |
Kiril Petkov Petkov, Sofia BG
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20130249218 | Animal Collision Avoidance System - The present disclosure is grounded in field study of habits of many species of animals, such as birds and bats to provide some examples, as well as their anatomical composition. This study has allowed an understanding of ingrained responses of these animals that can be modified by a biological understanding of physiology, sound and ultrasound technology, laser technology, and intelligent animal recognition. The unique coordination between these specialized technologies provides for animal casualty prevention in a sustainable way that achieves unprecedented success in diverting or deterring animals from their collision course with objects, such as wind turbines or aircraft to provide some examples. Moreover, the present disclosure does not substantially affect the well-being of the animals and does not introduce substantially harmful side-effects to the animals, their environment, and any surrounding human population. | 09-26-2013 |
Marin Petkov, Chicago, IL US
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20160110900 | System And Method For Dynamically Combining Images To Display Textual Content In The Form Of An Image - The system and method for providing a composite image corresponding to a textual message. The composite image is generated by receiving a text message, parsing out styling information, using predetermined size and spacing for combinations of typographical characters in combinations with a graphics editing routine which allows for the recognition and translation of text into a series of images which can then be presented to a viewer as a composite image. | 04-21-2016 |
Mihall Danev Petkov, Sofia BG
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20080222968 | Multifunctional Urban Complex - The complex, intended for application in big cities or city centers, where space for garages, storehouses and similar facilities is to be ensured, comprises a yard ( | 09-18-2008 |
Nikolay Petkov, Co. Cork IE
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20140134524 | METHODS AND MATERIALS FOR LITHOGRAPHY OF A HIGH RESOLUTION HSQ RESIST - A method of fabricating a substrate-HSQ resist material in which the substrate is selected from germanium (Ge) or gallium arsenide (GaAs) comprises the steps of pretreating a surface of the substrate to provide halogen termination of the substrate surface such that surface oxide is removed, and applying a HSQ resist to the surface. Removal of surface oxide allows the use of aqueous HSQ developers without causing damage to the surface. Also disclosed is a substrate-HSQ resist material, in which the substrate is selected from germanium or gallium arsenide, suitable for use in nanodevice fabrication and comprising a germanium or gallium arsenide substrate having a surface bearing a high resolution HSQ resist film or layer, in which the substrate has a halogen terminated surface. | 05-15-2014 |
Nikolay Petrov Petkov, Roselle, IL US
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20140268095 | DYNAMIC SENSOR SYSTEM AND METHOD FOR USING THE SAME - A sensor system includes a mounting member, an actuator disposed adjacent the mounting member, and a sensor connected to the actuator for sensing movement of an object using a signal. The actuator moves the sensor from a first sensing position to a second sensing position if the sensor is unable to read the signal. | 09-18-2014 |
20140277688 | Light Positioning System and Method of Using the Same - A light positioning system for use in transferring a container to a buffer is disclosed. The system includes a light signal that is disposed adjacent the buffer for guiding an operator to position a chassis into the buffer and a program logic controller. The system also includes a thru beam sensor. The thru beam sensor senses movement of the container into the buffer and outputs data to the program logic controller. The system further includes a distance sensor. The distance sensor determines a distance from the distance sensor to the container and outputs data to the program logic controller. The program logic controller determines a length of the container based on the data received from the thru beam sensor and the distance sensor and provides an output signal to the light signal based on the length of the container and the data received from the distance sensor. | 09-18-2014 |
20150360886 | LIGHT POSITIONING SYSTEM AND METHOD FOR USING THE SAME - A light positioning system for use in transferring a container to a buffer is disclosed. The system includes a light signal that is disposed adjacent the buffer for guiding an operator to position a chassis into the buffer and a program logic controller. The system also includes a thru beam sensor. The thru beam sensor senses movement of the container into the buffer and outputs data to the program logic controller. The system further includes a distance sensor. The distance sensor determines a distance from the distance sensor to the container and outputs data to the program logic controller. The program logic controller determines a length of the container based on the data received from the thru beam sensor and the distance sensor and provides an output signal to the light signal based on the length of the container and the data received from the distance sensor. | 12-17-2015 |
Pavel Petkov, Starnberg DE
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20090219983 | DATA COMMUNICATION CIRCUIT WITH EQUALIZATION CONTROL - An adaptive equalizer comprises an adjustable equalizer circuit that allows to enhance the frequency dependence of contents of the transmitted signals which suffer from losses in the connected transmission channel. A blind equalization tuning procedure is proposed that operates without knowledge about the characteristic of transmission channel. Phase positions of transitions in the equalized signal are detected. A digital post-processing circuit evaluates a measure for spread of the detected phase positions of transitions, accumulated over a plurality of the symbol periods. The digital post-processing circuit controls the adjustable equalizer, setting the adjustable equalizer to a setting wherein the detected spread is minimized. | 09-03-2009 |
Peter Petkov, Port Coquitlam CA
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20120017796 | METHOD AND SYSTEM FOR EXPANDABLE MODULAR RAFT AND A WATER RIDE USING THE SAME - The present invention is related to a method and system for expandable modular raft and a water ride using the same. In one embodiment, the expandable modular raft can include a raft, and a base unit attached to the raft and configured to receive a building block. The building block can be configured to be force fit to the base unit and/or each other. Furthermore, the building block could be formed from various shapes. The expandable modular raft can be used in a water ride and can float along a path such as a river. Interactive units such as water guns can be placed along the path to allow observers to interact with the riders. Furthermore, a raft area can be located adjacent the path to store the rafts, while a building block area can be located adjacent the path to store the building blocks. | 01-26-2012 |
Peter Z. Petkov, Mountain View, CA US
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20140340271 | Antenna Array with Reduced Mutual Coupling Between Array Elements - An array of antenna feed elements includes a plurality of horns, each horn having an aperture and configured for transmission of electromagnetic energy therethrough. At least a first horn is configured with an electrically conductive external surface proximate to the aperture, the external surface contoured so as to reduce mutual coupling between the first horn and an adjacent horn. Where the electromagnetic energy is within a radio frequency (RF) band, the external surface is contoured so as to provide an abrupt change in a gap dimension between the first horn and an adjacent horn, the change occurring at a distance behind the aperture of equal to a multiple of one half the characteristic wavelength of the RF band. | 11-20-2014 |
Petko Petkov, Sofia BG
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20150342241 | Method of Reducing E. coli or Salmonella Contamination of Agricultural Products - The present invention relates to a composition comprising lyophilized Lactobacilli and a plant-based food, wherein the composition is substantially free of animal products. The present invention also relates to methods of treating plant-based food by administration of a Lactobacilli and a plant medium composition. Methods of using the Lactobacilli and plant-based food composition to treat | 12-03-2015 |
20150342243 | Method of Reducing E. coli or Salmonella Contamination of Agricultural Products - The present invention relates to a composition comprising lyophilized | 12-03-2015 |
Petko Kirilov Petkov, Sofia BG
Patent application number | Description | Published |
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20130249218 | Animal Collision Avoidance System - The present disclosure is grounded in field study of habits of many species of animals, such as birds and bats to provide some examples, as well as their anatomical composition. This study has allowed an understanding of ingrained responses of these animals that can be modified by a biological understanding of physiology, sound and ultrasound technology, laser technology, and intelligent animal recognition. The unique coordination between these specialized technologies provides for animal casualty prevention in a sustainable way that achieves unprecedented success in diverting or deterring animals from their collision course with objects, such as wind turbines or aircraft to provide some examples. Moreover, the present disclosure does not substantially affect the well-being of the animals and does not introduce substantially harmful side-effects to the animals, their environment, and any surrounding human population. | 09-26-2013 |
Petko M. Petkov, Ellsworth, ME US
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20100266530 | FcRN ANTIBODIES AND USES THEREOF - In certain embodiments, this present invention provides polypeptide compositions (e.g., antibodies and antigen binding portions thereof that bind to FcRn), and methods for modulating FcRn activity. In other embodiments, the present invention provides methods and compositions for treating autoimmune disorders. | 10-21-2010 |
Petko N. Petkov, Stockholm SE
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20150055800 | ENHANCEMENT OF INTELLIGIBILITY IN NOISY ENVIRONMENT - Provided are methods and systems for enhancing the intelligibility of an audio (e.g., speech) signal rendered in a noisy environment, subject to a constraint on the power of the rendered signal. A quantitative measure of intelligibility is the mean probability of decoding of the message correctly. The methods and systems simplify the procedure by approximating the maximization of the decoding probability with the maximization of the similarity of the spectral dynamics of the noisy speech to the spectral dynamics of the corresponding noise-free speech. The intelligibility enhancement procedures provided are based on this principle, and all have low computational cost and require little delay, thus facilitating real-time implementation. | 02-26-2015 |
Plamen Petkov, Mississauga CA
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20100007312 | ISOLATED GENERATOR CONTROL UNIT (GCU) - An apparatus and method for allowing continuous operation of a generator control unit (GCU) despite a ground fault short circuit is disclosed. More specifically, a generator control unit (GCU) that maintains an isolated power pass domain in a completely floating set up with respect to the ground referenced control domain is used to allow continuous operation of a generator control unit (GCU) even when an internal wiring such as a permanent magnet generator wire or a generator field coil wire comes in contact with the chassis due to failure of the insulation. In addition, the apparatus and method also utilizes a high ohmic resistor as the only connection between the isolated power pass domain and the ground referenced control domain to control the voltage spike that occurs during a ground fault short circuit. Finally, the apparatus and method is also capable of detecting the occurrence of a ground fault short circuit by utilizing a ground fault detection to detect a disbalance current passing through a high ohmic resistor. | 01-14-2010 |
20100066314 | GENERATOR CONTROL UNIT WITH FAST FIELD DISCHARGE - A generator control unit for fast field discharge of a field coil is disclosed. The generator control unit comprises a control domain for detecting an excessive generator output voltage, a buck regulator with a feedback pin fed from the control domain, and an over-voltage protection switch connected in a field coil return path which is bypassed by a voltage limiting device. The control domain receives a point of regulation voltage feedback and upon detection of an over-voltage, emits a disable signal to cause the buck switch shut off along with the over-voltage protection switch. Thus dual breaking points are created at two ends of the field coil to dissipate the field charge quickly through the voltage limiting device. When the buck switch experiences a shorting failure, the over-voltage protection switch provides a second breaking point to allow the field discharge through the voltage limiting device, thereby controlling the field discharge with directly controlled over-voltage protection switch. | 03-18-2010 |
Plamen Petkov, Sofia BG
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20150371417 | METHOD AND SYSTEM FOR INK DATA GENERATOR, INK DATA RENDERING, INK DATA MANIPULATION AND INK DATA COMMUNICATION - Methods and systems are provided for generating, rendering, manipulating (e.g., slicing), and communicating stroke objects that form ink data. In a method of generating a stroke object, pen event data indicative of pen down, pen movement, and pen up events are sequentially received to generate point objects that collectively form a stroke object. The point objects serve as control points for interpolating curve segments. Further, a start parameter indicative of a start point within a starting curve segment of the curve segments at which display of the stroke object starts, and an end parameter indicative of an end point within an ending curve segment of the curve segments at which display of the stroke object ends, are generated for the stroke object. When rendering the stroke object, a system limits display of the stroke object to a range bound by the start and end parameters, as opposed to displaying the entire stroke object. | 12-24-2015 |
20150378450 | METHOD AND SYSTEM FOR INK DATA GENERATION, INK DATA RENDERING, INK DATA MANIPULATION AND INK DATA COMMUNICATION - A method is provided for generating ink data including stroke objects. The method includes generally four steps. The first step receives device-dependent user-input data including either one of pen event data of Type 1, which includes indicator position data and indicator pressure data, or pen event data of Type 2, which includes indicator position data but does not include indicator pressure data. The second step determines whether the pen event data is Type 1 or Type 2. The third step derives one or both of radius data for defining a width of the stroke object and transparency data for defining a transparency of the stroke object, based on the pen event data of Type 1 or Type 2. The fourth step outputs the stroke object including said one or both of radius data and transparency data as device-independent common attribute value(s) of each of multiple points of the stroke object in a predetermined format. | 12-31-2015 |
Roumen Dimitrov Petkov, Burnaby CA
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20110317452 | BI-DIRECTIONAL POWER CONVERTER WITH REGULATED OUTPUT AND SOFT SWITCHING - A resonant, bi-directional, DC to DC voltage converter with loss-less (soft) switching having regulated output and capable of converting power between two, high-potential and low-potential DC voltage sources. The converter's semiconductor and magnetic components provide both, output regulation and soft switching in both (step-down and step-up) directions of power conversion which reduces total component count, cost and volume and enhances power conversion efficiency. | 12-29-2011 |
20160094141 | SINGLE CONVERSION STAGE BIDIRECTIONAL SOFT-SWITCHED AC-TO-AC POWER CONVERTER - A single conversion stage bidirectional soft-switched AC/AC power converter system is capable of converting power in both directions between high- and low-voltage sources. The system has substantially loss-less switching and regulated output in both directions of power transfer. The semiconductor and electro-magnetic components of the system provide both output regulation and soft switching in both the step-up and the step-down directions of power conversion. The commonality of components between the two directions of power transfer reduces total component count, cost and volume, and enhances power conversion efficiency. An associated method of power transfer employs structural symmetry in a resonant circuit of the system to ensure high efficiency line power transfer in both directions. | 03-31-2016 |
Stefan Petkov, Flums CH
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20090294506 | Setting tool - A setting tool for driving fastening element in constructional components includes a setting mechanism having a combustion chamber ( | 12-03-2009 |
20160102976 | SURVEYING DEVICE HAVING BALL-POINT BEARING - In a surveying device having a base for positioning the surveying device and a pitch component having an optical beam path for surveying a target, the pitch component is radially and axially mounted and is rotatable in relation to the yaw component in a yaw component, which is movable in relation to the base, on the basis of a rotation body chucked in a self-centering manner in two cavities. | 04-14-2016 |
Svetlozar Petkov, Lakewood Ranch, FL US
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20120322585 | Method and System for Performing a Golf Swing using Apparatus to Fix Two of the Three Impact Coordinates and Change the Motion Fundamentals - The Invention changes all three Motion Fundamentals (starting point, trajectory, engine) and the mechanics of the golf back swing. Using the golf club as apparatus, it Pre-sets and Fixes Two of the Three Coordinates of the Impact Point and lets the Third coordinate return to its Starting Point. The Engine of the swing is shifted from the upper body to the lower body at the very start. The feet (the Base of the swing) are positioned in a New Way to provide for an immediate 90 degree rotation of the Base via the New Footwork system. The New Method substantially improves both consistency and repeatability, and eliminates the majority of the mistakes caused by the Old Method and System, and virtually eliminates the causes for the common golf injuries. | 12-20-2012 |
Thomas Petkov, Ergolding DE
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20150268974 | Method for controlling separate running of linked program blocks, and controller - A method controls separated running of linked program blocks which are configured for implementing functions of safety-relevant systems. A first program block is executed on a processor, the first program block being present in a first portion of a memory. A second program block is called during the execution of the first program block. The second program block is present in a second portion of the memory, which is different from the first portion. Access to the memory is monitored by a memory protection device, which initiates an exception if it is determined that the second program block is called during the execution of the first program block. An exception handler locks the first portion upon occurrence of the exception and releases the second portion for execution. The access to data is controlled by the memory protection device by use of exceptions and of the locks and releases resulting therefrom. | 09-24-2015 |
Tsvetan Petkov, San Francisco, CA US
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20110213679 | MULTI-QUANTITY FIXED PRICE REFERRAL SYSTEMS AND METHODS - Multi-quantity fixed price referral systems and methods are described. A “multi-quantity fixed price” listing is a listing published by an online publication system where a seller is selling a number of identical items for a fixed price for each of the items. The methods may include selecting a category from a catalogue hierarchy used by an online publication system. The selected category may be one of a plurality of categories assigned to listings each describing an item for sale. The listings within the selected category are filtered to select a set of filtered listings. A decay formula may be applied to each filtered listing of the set of filtered listings. One or more of the filtered listings are selected based on a ranking of the filtered listings. A graphical user interface to display the selected filtered listings to the user is provided. | 09-01-2011 |
Valdimir Petkov, Mountain View, CA US
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20100145660 | MEMS SENSOR WITH BUILT-IN SELF-TEST - A method and system for testing a MEMS sensor element during operation of a MEMS sensor system in one embodiment includes a test signal generator configured to generate a broad frequency band test signal, and a verification signal substantially identical to the test signal, a microelectrical-mechanical system (MEMS) sensor element operatively connected to the test signal generator for generating a sensor output in response to the test signal, a comparison component configured to generate an evaluation signal output based upon the verification signal and the test signal, and an evaluation circuit operatively connected to the comparison component and configured to identify a mismatch between the verification signal and the sensor output based upon the evaluation signal. | 06-10-2010 |
Valdimir Plamenov Petkov, Mountain View, CA US
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20090210185 | System and method for measuring DC offset in a sensor output by modulating a signal-independent operating parameter of the sensor - A sensor circuit enables detection of DC offset in a sensor output signal. The sensor circuit includes a sensor that generates a sensor output signal corresponding to a physical signal coupled to an input of the sensor, and a modulator that generates a modulation signal, the modulator being coupled to the sensor to modulate a physical parameter of the sensor and to enable a DC offset to be separated from the sensor output signal. To enable the circuit to measure the DC offset even though the sensor output signal is inversely proportional to the output signal, the circuit includes a feedback circuit configured to generate a feedback signal. The feedback signal is coupled to the input of the sensor to enable the physical parameter of the sensor to be modulated without modulating a portion of the sensor output signal attributable to the physical signal being converted to an electrical signal by the sensor. | 08-20-2009 |
Valentin Petkov, Montreal CA
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20140115482 | METHOD FOR DISPLAYING AN OVERLAID WEB SURVEY ICON - The present relates to a computer-implemented method for displaying an overlaid web survey icon. The method displays a content of a web site in a browsing window of a browser of an electronic device. The method displays an invitation to participate in a survey. The method displays, upon selection of the invitation to participate in the survey by a user, an overlaid survey icon in the browsing window. And the method further displays the overlaid survey icon in the browsing window, when another content of the web site is displayed in the browsing window. Upon occurrence of a triggering event, the method displays a survey content in a survey window. In one embodiment, the triggering event consists in a selection by the user of the overlaid survey icon. | 04-24-2014 |
Vladimir Petkov, Mountain View, CA US
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20130049774 | SURFACE CHARGE REDUCTION TECHNIQUE FOR CAPACITIVE SENSORS - A differential capacitive transducer system is disclosed that includes first and second capacitive cores and a chopping system. The first core a first input coupled to a first capacitor, a second input coupled to a second capacitor, and a first output. The second core includes a third input coupled to a third capacitor, a fourth input coupled to a fourth capacitor, and a second output. The chopping system has first and fourth inputs coupled to positive signals, and second and third inputs coupled to negative signals. As the chopping system switches between high and low states, it couples the core inputs to different polarity signals reducing charge buildup. The different polarity signals can have substantially same magnitudes. Chopper clock and main clock frequencies can be selected to provide substantially zero average voltages at the core inputs. The system can include an integrator circuit and differential summing circuits. | 02-28-2013 |
20130049775 | SURFACE CHARGE REDUCTION TECHNIQUE FOR CAPACITIVE SENSORS - A differential capacitive transducer system is disclosed that includes first and second capacitive cores and a chopping system. The first core a first input coupled to a first capacitor, a second input coupled to a second capacitor, and a first output. The second core includes a third input coupled to a third capacitor, a fourth input coupled to a fourth capacitor, and a second output. The chopping system has first and fourth inputs coupled to positive signals, and second and third inputs coupled to negative signals. As the chopping system switches between high and low states, it couples the core inputs to different polarity signals reducing charge buildup. The different polarity signals can have substantially same magnitudes. Chopper clock and main clock frequencies can be selected to provide substantially zero average voltages at the core inputs. The system can include an integrator circuit and differential summing circuits. | 02-28-2013 |
20130049776 | READOUT CIRCUIT FOR SELF-BALANCING CAPACITOR BRIDGE - A capacitive transducer and a readout circuit for processing a signal from a capacitive transducer. The readout circuit includes a high gain circuit element, two summing amplifiers and two feedback path. The high gain circuit element generates an amplified transducer signal, and the summing amplifiers sum the amplified transducer signal with a positive reference voltage and the negative reference voltage, respectively, to generate a first summation signal and a second summation signal. The feedback paths feed back the summation signals to the transducer. Output circuitry generates an output signal based on the summation signals. The high gain circuit element can be a switched capacitor integrator. The output circuitry can generates the output signal based on the first and second summation signals. | 02-28-2013 |
20130055564 | LINEAR CAPACITANCE-TO-VOLTAGE CONVERTER USING A SINGLE AMPLIFIER FOR TRANSDUCER FRONT ENDS WITH CANCELLATION OF SPURIOUS FORCES CONTRIBUTED BY SENSOR CIRCUITRY - Capacitive transducer systems are disclosed that reduce nonlinearities due to feedthrough capacitances or residual electrostatic forces. The systems can include a core with a first input coupled to a first variable capacitor, a second input coupled to a second variable capacitor, and a core output coupled to a common node; an amplifier with input switchably coupled to common node and an output; a feedback path switchably coupling amplifier output to common node; and a main clock with first and second phases, that controls switches coupling system components. When clock is in first phase, first core input is coupled to reference voltage, second core input is coupled to negative reference voltage, and common node is coupled to amplifier output. When clock is in second phase, core inputs are grounded, and common node is coupled to amplifier input. The system can have single amplifier. Neutralization capacitor can cancel feedthrough and parasitic capacitances. | 03-07-2013 |
20130057301 | LINEAR CAPACITANCE-TO-VOLTAGE CONVERTER USING A SINGLE AMPLIFIER FOR ACCELEROMETER FRONT ENDS WITH CANCELLATION OF SPURIOUS FORCES CONTRIBUTED BY SENSOR CIRCUITRY - Capacitive transducer systems are disclosed that reduce nonlinearities due to feedthrough capacitances or residual electrostatic forces. The systems can include a core with a first input coupled to a first variable capacitor, a second input coupled to a second variable capacitor, and a core output coupled to a common node; an amplifier with input switchably coupled to common node and an output; a feedback path switchably coupling amplifier output to common node; and a main clock with first and second phases, that controls switches coupling system components. When clock is in first phase, first core input is coupled to reference voltage, second core input is coupled to negative reference voltage, and common node is coupled to amplifier output. When clock is in second phase, core inputs are grounded, and common node is coupled to amplifier input. The system can have single amplifier. Neutralization capacitor can cancel feedthrough and parasitic capacitances. | 03-07-2013 |
20130063165 | SCHEME TO ACHIEVE ROBUSTNESS TO ELECTROMAGNETIC INTERFERENCE IN INERTIAL SENSORS - A capacitive sensor system and method resistant to electromagnetic interference is disclosed. The system includes a capacitive core, differential amplifier with inverting and non-inverting inputs, capacitive paths, and chopping system. Core can include inputs and outputs coupled to variable capacitors, and common nodes coupling variable capacitors. Capacitive paths couple core outputs to amplifier inputs. When chopping system is high, one polarity voltage is applied to core inputs, a first core output is coupled to the inverting input and a second core output is coupled to the non-inverting input. When the chopping system is low, opposite polarity voltage is applied to core inputs, and core output to amplifier input couplings are flipped. Capacitive paths can include bond wires. Chopping system can be varied between high and low at frequencies that smear noise away from a frequency band of interest, or that smear noise substantially evenly across a wide frequency range. | 03-14-2013 |
20130063207 | SCHEME TO ACHIEVE ROBUSTNESS TO ELECTROMAGNETIC INTERFERENCE IN INERTIAL SENSORS - A capacitive sensor system and method resistant to electromagnetic interference is disclosed. The system includes a capacitive core, differential amplifier with inverting and non-inverting inputs, capacitive paths, and chopping system. Core can include inputs and outputs coupled to variable capacitors, and common nodes coupling variable capacitors. Capacitive paths couple core outputs to amplifier inputs. When chopping system is high, one polarity voltage is applied to core inputs, a first core output is coupled to the inverting input and a second core output is coupled to the non-inverting input. When the chopping system is low, opposite polarity voltage is applied to core inputs, and core output to amplifier input couplings are flipped. Capacitive paths can include bond wires. Chopping system can be varied between high and low at frequencies that smear noise away from a frequency band of interest, or that smear noise substantially evenly across a wide frequency range. | 03-14-2013 |
20130067984 | LINEARITY ENHANCEMENT OF CAPACITIVE TRANSDUCERS BY AUTO-CALIBRATION USING ON-CHIP NEUTRALIZATION CAPACITORS AND LINEAR ACTUATION - A system and method are disclosed for automatically calibrating capacitive transducers to neutralize feed-through capacitance using linear actuation. The method includes starting with an initial neutralization capacitance, applying no electrostatic force and two known electrostatic forces to a proof mass of the transducer, recording the transducer output changes due to the applied forces; and determining how to revise neutralization capacitance based on the changes. The method can use a binary search to find a final neutralization capacitance providing the best linearity. The method can include comparing the final linearity to a threshold linearity. The electrostatic forces can be applied using a charge control method where the electrostatic force is a linear function of the actuation duration. The linear actuation can be used for continuous self-test of capacitive sensors. | 03-21-2013 |
20130152663 | LINEARITY ENHANCEMENT OF CAPACITIVE TRANSDUCERS BY AUTO-CALIBRATION USING ON-CHIP NEUTRALIZATION CAPACITORS AND LINEAR ACTUATION - A system and method are disclosed for automatically calibrating capacitive transducers to neutralize feed-through capacitance using linear actuation. The method includes starting with an initial neutralization capacitance, applying no electrostatic force and two known electrostatic forces to a proof mass of the transducer, recording the transducer output changes due to the applied forces; and determining how to revise neutralization capacitance based on the changes. The method can use a binary search to find a final neutralization capacitance providing the best linearity. The method can include comparing the final linearity to a threshold linearity. The electrostatic forces can be applied using a charge control method where the electrostatic force is a linear function of the actuation duration. The linear actuation can be used for continuous self-test of capacitive sensors. | 06-20-2013 |
Vladimir Petkov, Palo Alto, CA US
Patent application number | Description | Published |
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20090072840 | CANCELLING LOW FREQUENCY ERRORS IN MEMS SYSTEMS - Systems and methods are described below for cancelling low frequency errors in electronic systems including MEMS systems. The systems include a first circuit coupled to one or more switches. One or more bond wires are coupled to the switches and a second circuit. Control signals are coupled to the switches, and the control signals are configured to control coupling of the first circuit to the second circuit via the switch to cancel variable offsets introduced by the bond wire in an output of the first circuit. | 03-19-2009 |
Vladimir P. Petkov, San Jose, CA US
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20150338217 | Stepped Sinusoidal Drive For Vibratory Gyroscopes - A gyroscopic sensor includes a vibratory gyroscopic sensor element, first and second drive electrodes positioned proximate to the vibratory gyroscopic sensor element, and a drive circuit operatively connected to the first and second drive electrodes. The drive circuit is configured to generate a stepped sinusoidal waveform having a plurality of steps, each step having a predetermined duration and each step having an output level in a plurality of predetermined output levels for the stepped sinusoidal waveform including at least three positive output levels and at least three negative output levels to generate oscillation of the vibratory gyroscopic sensor element at a predetermined frequency. | 11-26-2015 |
20150341041 | Phase Lock Loop Circuit Having a Wide Bandwidth - A phase lock loop circuit includes a phase detector, loop filter, voltage controlled oscillator, and a divider. The divider includes a controller and a memory that stores a lookup table of signal levels for a sinusoidal feedback signal. The divider receives an output signal from the voltage controlled oscillator and generates an output signal corresponding to the values in the lookup table in a predetermined order to generate a sinusoidal feedback signal. The divider generates a new output for each cycle of the output signal from the voltage controlled oscillator and enables PLL bandwidth that meets or exceeds a frequency of the reference signal. | 11-26-2015 |
20150341042 | DIGITAL PHASE LOCK LOOP CIRCUIT INCLUDING FINITE IMPULSE RESPONSE FILTERING TO REDUCE ALIASING OF QUANTIZATION NOISE - A digital phase lock loop circuit includes a phase detector, loop filter, finite impulse response filter (FIR), a plurality of digital to analog converters (DACs), a voltage controlled oscillator (VCO), and a divider. The FIR filter includes a predetermined number of taps, where each tap is connected to an input of one DAC in the plurality of DACs. The FIR filter attenuates high-frequency quantization error in a digital control signal that the plurality of DACs converts to an analog control signal for the VCO. The FIR filtered control signal reduces or eliminates quantization noise higher-frequency components that would otherwise be generated as DC quantization noise in a feedback signal generated by the divider. | 11-26-2015 |
20150358016 | Current Mirror Circuits with Narrow Bandwidth Bias Noise Reduction - A current mirror circuit includes a first transistor connected to a voltage source, a gate of the first transistor being connected to a drain of the first transistor, a current source connected to the drain and the gate of the first transistor, the current source being configured to generate a predetermined first output current, a sample and hold circuit having an input connected to the gate of the first transistor, a second transistor connected to the voltage source, a gate of the second transistor being connected to an output of the sample and hold circuit, and a controller operatively connected to the sample and hold circuit, the controller being configured to operate the sample and hold circuit at a predetermined sampling frequency to attenuate bias noise from the first transistor in a second output current from the second transistor. | 12-10-2015 |
20150358724 | Feedback Delay Reduction In Force Feedback Devices - A feedback circuit provides a feedback signal to a transducer. The feedback circuit includes an ADC that generates digital representations of a feedback signal, digital controller that identifies adjustments for the feedback, and DAC that generates an analog output of the adjusted feedback signal. The digital controller performs speculative computation to identify adjustments for the feedback signal output for each output value from the ADC prior to receiving the output from the ADC. The ADC and DAC include sigma-delta modulators that operate with a zero clock cycle delay in a forward path. The ADC, digital controller, and DAC generate adjustments to the feedback output signal with reduced delay that reduce phase lag and improve phase margin to maintain stability in the transducer. | 12-10-2015 |