| Patent application number | Description | Published |
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| 20090087589 | Method for providing AFM exchange pinning fields in multiple directions on same substrate - Simultaneous setting of exchange pinning field magnetization in more than one direction for several thin film structures on a single substrate has been achieved by first orienting the structures as needed. A layer of hard magnetic material is then deposited, suitably patterned to control the direction of its flux, and then magnetized through a single exposure to a strong magnetic field. The assemblage is then thermally annealed (in the absence of any applied field) at a temperature higher than the AFM material blocking temperature, following which the thin film structures are magnetically pinned in the intended directions. | 04-02-2009 |
| 20090115405 | Magnetic field angular sensor with a full angle detection - An integrated angular magnetic sensor apparatus for determining a magnetic field angle within two axes of a plane is formed on a substrate onto which two anisotropic magneto-resistive sensing elements and at least one magneto-resistive sensing element are fabricated. The two anisotropic magneto-resistive sensing elements are oriented such that the output voltages of a first and second of the anisotropic magneto-resistive sensing elements are a function of a first and second trigonometric function (a sine function) of the magnetic field angle to a reference axis. The at least one magneto-resistive sensing element on the substrate and having a fixed reference magnetization oriented with respect to the reference axis such that an output voltage of the at least one magneto-resistive sensing element provides a quadrant indicator for the magnetic field angle with respect to the reference axis. The quadrant indicator is a trigonometric function such as a sine or cosine function. | 05-07-2009 |
| 20090256552 | GEAR TOOTH SENSOR WITH SINGLE MAGNETORESISTIVE BRIDGE - The invention discloses a rotation sensor suitable for gear wheels. MR (magneto-resistive) sensors are placed inside a zero field region generated by at least two permanent magnets. Said sensors are divided into two groups that are immersed in different locally generated magnetic environments. A differential signal taken between the two groups then senses the movement of the wheel's teeth. A single wafer method for manufacturing the device is also briefly described. | 10-15-2009 |
| 20090315543 | Gear tooth sensor (GTS) with magnetoresistive bridge - The invention discloses a method and apparatus for determining the rotational status of a gear wheel whether or not it is actually turning. A key feature is the magnetic angle sensor that is used. Said sensor comprises a bridge structure of four MR devices in a square array. The direction of the pinned reference layer is the same for all four devices and lies along one of the diagonals of said square array. A single wafer process is used to manufacture the invented device. | 12-24-2009 |
| 20100007344 | MTJ based magnetic field sensor with ESD shunt trace - Presented herein is a shunted MTJ sensor formed of a plurality of electrically connected MTJ cells for measuring magnetic fields and currents and its method of fabrication. To provide stable single domain magnetic moments of the MTJ cells and to ensure that the magnetic moments return to a fixed bias point in the absence of external magnetic fields, the cells are formed of sufficiently small size and with elliptical cross-section of aspect ratio greater than 1.2. To eliminate the possibility of ESD damage to the cells, they are protected by a parallel shunt, formed as a trace of sufficiently high resistance that directs accumulated charges harmlessly to ground while bypassing the cells. | 01-14-2010 |
| 20100315928 | Elimination of errors due to aging in magneto-resistive devices - The problem of magneto-resistive sensor drift with age has been solved by normalizing the sensor's output relative to its output when it is in a selected reproducible state. Details for the method to accomplish this normalization are disclosed together with several examples of how the method can be utilized. | 12-16-2010 |
| 20110037458 | Open loop magneto-resistive magnetic field sensor - An apparatus and a general method to measure a magnetic field using magneto-resistive sensors in an open-loop configuration are disclosed. A key feature is the regular in-situ normalization of the sensors to compensate for the effects of sensor aging. | 02-17-2011 |
| 20110111133 | Multi-directional pin anneal of MR sensors with plasmon heating - A method by which portions of a wafer level fabrication can be selectively heated by means of the formation of a plasmon generating layers of specific size, shape, orientation and material on the fabrication and then illuminating the formation with electromagnetic radiation of such wavelength and polarization as will optimally be absorbed by the plasmon generating layers so as to generate plasmons therein. The generated plasmons thereupon produce thermal energy which is transferred to portions of the fabrication with which the plasmon generation layer has thermal contact. This method is particularly advantageous for producing multiple anneals and different magnetic pinning directions for the anti-ferromagnetic pinning layer in each of an array of GMR or TMR devices. In that process, the anti-ferromagnetic layer must be raised above its Curie temperature at which point it loses its anti-ferromagnetic properties and can have a magnetization imposed by application of an external magnetic field. The method can equally well be applied to any wafer level fabrication or deposited film fabrication in which it is desired to heat specific regions to obtain some specified result that is temperature dependent. | 05-12-2011 |
| Patent application number | Description | Published |
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| 20090276396 | SYSTEMS AND METHODS FOR NATURAL LANGUAGE COMMUNICATION WITH A COMPUTER - A system for natural language communication with a computer, comprising a database configures to store at least one table the table configured to store associations between concepts in a text string and associated concept identifiers; and a builder interfaced with the database, the builder configured to construct a concept defined by a text string by performing a process comprising the following steps: assigning a unique identifier to the concept, breaking the concept into sub-concepts, assigning a unique identifier to each sub-concept, using legal joins to join cub-concepts into higher order sub-concepts, assigning a unique identifier to the higher-order concepts, and repeating the steps until the higher order sub-concepts join to form the concept, and storing the concept, sub-concepts, higher order sub-concepts and unique identifiers in a table in the database. | 11-05-2009 |
| 20110119282 | SYSTEMS AND METHODS FOR GENERATING A LANGUAGE DATABASE THAT CAN BE USED FOR NATURAL LANGUAGE COMMUNICATION WITH A COMPUTER - A system for knowledge representation in a computer that can enable unrestricted natural language communication with a computer, comprising a database configured to store at least one table, the table configured to store associations between concepts in a text string and associated concept identifiers; and a builder interfaced with the database, the builder configured to construct a table that represents knowledge defined by a text string, the text string comprising (n) operands and (n−1) operators, by performing a process comprising the following steps: combining concepts in the text string into first order sub-concepts according to precedence defined by the operators, combining the first order sub-concepts into higher order concepts according to the precedence defined by the operators, repeating the steps until the higher order sub-concepts join to form a concept that represents the entire text string, and storing the concept, first order sub-concepts, and higher order sub-concepts in the database. | 05-19-2011 |
| 20110119302 | SYSTEM AND METHODS FOR ACCESSING WEB PAGES USING NATURAL LANGUAGE - A system for accessing a webpage through natural language communication with a computer comprises a registry database configured to store at least one table the table configured to store associations between a concept in a text string and all natural language variations of the text string and associated concept identifiers, the concept in the text string an variations thereof relating to an object; and a parser interfaced with the database and configured to receive the text string or a variation thereof, the parser further configured to identify the concept represented by the text string or variation thereof and associate the identified concept with the object. | 05-19-2011 |
