Xu, Cambridge
Aidong Xu, Cambridge GB
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20110031916 | Inverter Circuit with IPM Module for Brushless Motor - An inverter circuit for a brushless motor utilizes an IPM integrated circuit module. The module includes insulated gate bipolar transistors and has outputs for providing driving signals to the brushless motor based on control signals received at inputs from a microcontroller. A sensing circuit measures the current at the lines from the outputs of the IPM integrated circuit module to the motor. A feedback circuit processes the current measurements and provides signals corresponding to the measured current to the microcontroller. | 02-10-2011 |
20110033173 | Control Electronics for Brushless Motors - An electronic control circuit for a brushless motor has an input power circuit providing a DC voltage and a microcontroller integrated circuit receiving the DC voltage. The microcontroller integrated circuit provides three-phase control signals according to a space vector control method. A microprocessor connected to the microcontroller integrated circuit executes supervisory control over the electronic control circuit. An inverter circuit receives the three-phase control signals from the microcontroller integrated circuit and provides driving signals to the brushless motor based on the three-phase control signals received from the microcontroller integrated circuit. | 02-10-2011 |
20110273118 | Power Factor Correction Circuit - A power factor correction circuit has a semiconductor integrated circuit and at least one very low Rds(on) MOSFET. The circuit also includes a silicon carbide diode for zero reverse recovery current. | 11-10-2011 |
20130264977 | CONTROL ELECTRONICS FOR BRUSHLESS MOTORS - An electronic control circuit for a brushless motor has an input power circuit providing a DC voltage and a microcontroller integrated circuit receiving the DC voltage. The microcontroller integrated circuit provides three-phase control signals according to a space vector control method. A microprocessor connected to the microcontroller integrated circuit executes supervisory control over the electronic control circuit. An inverter circuit receives the three-phase control signals from the microcontroller integrated circuit and provides driving signals to the brushless motor based on the three-phase control signals received from the microcontroller integrated circuit. | 10-10-2013 |
Bingjun Xu, Cambridge, MA US
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20130079556 | SILVER-CATALYZED SYNTHESIS OF AMIDES FROM AMINES AND ALDEHYDES - The invention provides a method for producing amides via the reaction of aldehydes and amines with oxygen adsorbed on a metallic silver or silver alloy catalyst. An exemplary reaction is shown in Scheme 1 : (I), (II), (III) | 03-28-2013 |
20140221679 | GOLD-CATALYZED SYNTHESIS OF CARBONATES AND CARBAMATES FROM CARBON MONOXIDE - The invention provides a method for producing organic carbonates via the reaction of alcohols and carbon monoxide with oxygen adsorbed on a metallic gold or gold alloy catalyst. | 08-07-2014 |
Fangmin Xu, Cambridge, MA US
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20150218274 | ANTIBODY MOLECULES TO TIM-3 AND USES THEREOF - Antibody molecules that specifically bind to TIM-3 are disclosed. The anti-TIM-3 antibody molecules can be used to treat, prevent and/or diagnose immune, cancerous, or infectious conditions and/or disorders. | 08-06-2015 |
Haitian Xu, Cambridge GB
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20110015925 | SPEECH RECOGNITION SYSTEM AND METHOD - A speech recognition method, comprising: | 01-20-2011 |
20120041764 | SPEECH PROCESSING SYSTEM AND METHOD - A speech processing method, comprising: | 02-16-2012 |
Huan Xu, Cambridge GB
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20090185129 | BISTABLE FERROELECTRIC LIQUID CRYSTAL DEVICES - A liquid crystal electro-optic device. The liquid crystal electro-optic device comprises at least one liquid crystal cell comprising: a pair of substrates having a gap therebetween; a pair of electrodes, the pair of electrodes positioned on one of the substrates or one electrode positioned on each substrate; and a ferroelectric, oligosiloxane liquid crystal material disposed in the gap between the pair of substrates, the ferroelectric, oligosiloxane liquid crystal material exhibiting an I-♦ SmC* phase sequence wherein the liquid crystal electro-optic device is bistable in operation. The invention also involves a method for making a liquid crystal electro-optic device. | 07-23-2009 |
20100283925 | OLIGOSILOXANE MODIFIED LIQUID CRYSTAL FORMULATIONS AND DEVICES USING SAME - A liquid crystal formulation is described. The liquid crystal formulation comprises a first oligosiloxane-modified nano-phase segregating liquid crystalline material; and at least one additional material selected from a second oligosiloxane-modified nano-phase segregating liquid crystalline material, non-liquid crystalline oligosiloxane-modified materials, organic liquid crystalline materials, or non-liquid crystalline materials, wherein the liquid crystal formulation has an I→SmA*→SmC* phase transition, with a SmC* temperature range from about 15° C. to about 35° C., a tilt angle of about 22.5°±6° or about 45°±6°, a spontaneous polarization of less than about 50 nC/cm2., and a rotational viscosity of less than about 600 cP. Devices containing liquid crystal formulations are also described. The device has a stable bookshelf geometry, bistable switching, and isothermal electric field alignment, a response time of less than 500 μs when switched between two stable states, and an electric drive field of less than about 30 V/μm. | 11-11-2010 |
20100283927 | OLIGOSILOXANE MODIFIED LIQUID CRYSTAL FORMULATIONS AND DEVICES USING SAME - A liquid crystal formulation is described. The liquid crystal formulation comprises a first oligosiloxane-modified nano-phase segregating liquid crystalline material; and at least one additional material selected from a second oligosiloxane-modified nano-phase segregating liquid crystalline material, non-liquid crystalline oligosiloxane-modified materials, organic liquid crystalline materials, or organic non-liquid crystalline materials, wherein the liquid crystal formulation is nano-phase segregated in the SmC* phase, has an I→SmC* phase transition, with a SmC* temperature range from about 15° C. to about 35° C., has a tilt angle of about 22.5°±6° or about 45°±6°, and has a spontaneous polarization of less than about 50 nC/cm2, and a rotational viscosity of less than about 600 cP. Devices containing liquid crystal formulations are also described. The device has a stable bookshelf geometry, bistable switching, and isothermal electric field alignment, a response time of less than 500 μs when switched between two stable states, and an electric drive field of less than about 30 V/μm. | 11-11-2010 |
20130155340 | Liquid Crystal Formulations And Structures For Smectic A Optical Devices - The present, invention relates to liquid crystal compositions having a smectic A structure for use in an optical device in which the composition is sandwiched between a pair of electrodes ( | 06-20-2013 |
20130342773 | Smectic A Compositions For Use in Optical Devices - A liquid crystal smectic A composition that can be switched by the application of different electric fields across it between a first stable state (left hand block in FIG. | 12-26-2013 |
Liping Xu, Cambridge GB
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20090047117 | Flow control arrangement - A flow control arrangement ( | 02-19-2009 |
20100322777 | COMPRESSOR BLADE | 12-23-2010 |
Minnan Xu, Cambridge, MA US
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20140303687 | CONTEXTUAL IMAGE STABILIZATION - Image stabilization systems and methods include a detector configured to detect images, an actuator coupled to the detector, a sensor coupled to the detector and configured to detect motion of the detector, and an electronic processor in communication with the sensor and the actuator, where the electronic processor is configured to, for example: (a) receive information about motion of the detector from the sensor; (b) determine components of the motion of the detector, and associate a class with each of the determined components; (c) identify components to be compensated from among the determined components based on the associated classes; and (d) generate a control signal that causes the actuator to adjust a position of at least a portion of the detector to compensate for the identified components. | 10-09-2014 |
Rubin Xu, Cambridge GB
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20130232540 | METHOD AND SYSTEM FOR APPLICATION-BASED POLICY MONITORING AND ENFORCEMENT ON A MOBILE DEVICE - A method and system for application-based monitoring and enforcement of security, privacy, performance and/or other policies on a mobile device includes incorporating monitoring and policy enforcement code into a previously un-monitored software application package that is installable on a mobile device, and executing the monitoring and policy enforcement code during normal use of the software application by a user of the mobile device. | 09-05-2013 |
20130232573 | METHOD AND SYSTEM FOR APPLICATION-BASED POLICY MONITORING AND ENFORCEMENT ON A MOBILE DEVICE - A method and system for application-based monitoring and enforcement of security, privacy, performance and/or other policies on a mobile device includes incorporating monitoring and policy enforcement code into a previously un-monitored software application package that is installable on a mobile device, and executing the monitoring and policy enforcement code during normal use of the software application by a user of the mobile device. | 09-05-2013 |
20140380414 | METHOD AND SYSTEM FOR APPLICATION-BASED POLICY MONITORING AND ENFORCEMENT ON A MOBILE DEVICE - A method and system for application-based monitoring and enforcement of security, privacy, performance and/or other policies on a mobile device includes incorporating monitoring and policy enforcement code into a previously un-monitored software application package that is installable on a mobile device, and executing the monitoring and policy enforcement code during normal use of the software application by a user of the mobile device. | 12-25-2014 |
Siyao Xu, Cambridge, MA US
Yanfei Xu, Cambridge, MA US
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20150321408 | CONTINUOUS FABRICATION SYSTEM AND METHOD FOR HIGHLY ALIGNED POLYMER FILMS - Process for continuous fabrication of highly aligned polymer films. A polymer-solvent solution is subjected to a high shear, high temperature, Couette flow to extrude a thin film having polymer chain disentanglement. The extruded thin film is frozen and the solvent is allowed to evaporate to form a dried film. The dried film is mechanically drawn using a constant force, adaptive-thickness drawing system to align polymer molecular chains through plastic deformation. A suitable polymer is ultra-high molecular weight polyethylene. | 11-12-2015 |