Grinfeld
Dmitry Grinfeld, Bremen DE
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20130311110 | Methods and Apparatus for Obtaining Enhanced Mass Spectrometric Data - A method comprising decomposing mass spectrometry data, especially of ion species that undergo multiple direction changes in a periodic manner, the data comprising signal and noise measured over time, into a sum of K harmonic component signals and a noise component, wherein the harmonic component signals and their number K are derived from the data and a determined quantity representative of the noise. The harmonic component signals and their number K may be determined iteratively on the basis of: using an initial value of K to calculate a minimised non-negative measure of difference R | 11-21-2013 |
20150028197 | MULTI-REFLECTION MASS SPECTROMETER - A multi-reflection mass spectrometer is provided comprising two ion-optical mirrors, each mirror elongated generally along a drift direction (Y), each mirror opposing the other in an X direction, the X direction being orthogonal to Y, characterized in that the mirrors are not a constant distance from each other in the X direction along at least a portion of their lengths in the drift direction. In use, ions are reflected from one opposing mirror to the other a plurality of times while drifting along the drift direction so as to follow a generally zigzag path within the mass spectrometer. The motion of ions along the drift direction is opposed by an electric field resulting from the non-constant distance of the mirrors from each other along at least a portion of their lengths in the drift direction that causes the ions to reverse their direction. | 01-29-2015 |
20150028198 | MULTI-REFLECTION MASS SPECTROMETER - A multi-reflection mass spectrometer comprising two ion-optical mirrors, each mirror elongated generally along a drift direction (Y), each mirror opposing the other in an X direction and having a space therebetween, the X direction being orthogonal to Y; the mass spectrometer further comprising one or more compensation electrodes each electrode being located in or adjacent the space extending between the opposing mirrors; the compensation electrodes being configured and electrically biased in use so as to produce, in at least a portion of the space extending between the mirrors, an electrical potential offset which: (i) varies as a function of the distance along the drift length, and/or; (ii) has a different extent in the X direction as a function of the distance along the drift length. In a preferred embodiment the period of ion oscillation between the mirrors is not substantially constant along the whole of the drift length. | 01-29-2015 |
Dmitry E. Grinfeld, Moscow Region RU
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20100320376 | ION TRAP - An ion trap comprises substantially elongate electrodes | 12-23-2010 |
Dmitry E. Grinfeld, Ramenskoye RU
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20110284737 | ION TRAP - An ion trap comprises substantially elongate electrodes | 11-24-2011 |
Dmitry E. Grinfeld, Bremen DE
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20130313424 | Multireflection Time-of-flight Mass Spectrometer - A method of reflecting ions in a multireflection time of flight mass spectrometer is disclosed. The method includes guiding ions toward an ion mirror having multiple electrodes, and applying a voltage to the ion mirror electrodes to create an electric field that causes the mean trajectory of the ions to intersect a plane of symmetry of the ion mirror and to exit the ion mirror, wherein the ion are spatially focussed by the mirror to a first location and temporally focused to a second location different from the first location. Apparatus for carrying out the method is also disclosed. | 11-28-2013 |
Michael Grinfeld, Haifa IL
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20100244883 | COMPENSATION FOR VOLTAGE DROP IN AUTOMATIC TEST EQUIPMENT - Providing reliable testing of a device under test (DUT) by compensating for a reduced voltage inside the device without changing the internal circuitry of the device. The DUT has multiple connection terminals for connecting to the test equipment including at least first and second power connection terminals that both connect to an internal power bus of the DUT. An adapter board connects to the multiple connection terminals of the DUT via a removably attachable socket which holds the DUT. A tester supplies power to the DUT through the adapter board. The adapter board is configured to supply power from the tester to the DUT through the first power connection terminal and to monitor voltage at the second power connection terminal. The tester includes a compensation unit which controls power based on the voltage monitored at the second power connection terminal. | 09-30-2010 |
Ron Grinfeld, Ramat Gan IL
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20100241725 | ISCSI RECEIVER IMPLEMENTATION - A method for communication is disclosed and may include, in a network interface device, parsing a portion of a TCP segment into one or more portions of Internet Small Computer Systems Interface (iSCSI) Protocol Data Units (PDUs). A header and/or a payload for one or more of the parsed iSCSI PDUs may be recovered. Concurrent with parsing of a remaining portion of the TCP segment to recover a remaining portion of PDUs, the recovered header may be evaluated and/or the recovered payload may be routed external to the network interface device for processing. The evaluating and the routing may occur independently of the parsing within the network interface device. Respective separate physical processors may be used for the parsing and the recovering. The respective separate processors for recovering may be used for the evaluating and the routing. | 09-23-2010 |
20110080912 | TCP RECEIVER ACCELERATION - A method for processing network information may include performing by one or more processors and/or circuits integrated within a single chip, classifying a header portion of a received packet based on connection context information within the received packet. The connection context information may be acquired by the single chip from a memory external to the single chip. The connection context information for the received packet may be updated based on the classifying. At least a payload portion of the received packet may be communicated to a destination, based on the updated connection context information. The classifying, updating and communicating may be performed asynchronously. The header portion of the received packet may be parsed and/or validated. The connection context information of the received packet may be evaluated. | 04-07-2011 |