Xin He
Xin He, Waalre NL
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20100119022 | CALIBRATION-FREE LOCAL OSCILLATOR SIGNAL GENERATION FOR A HARMONIC-REJECTION MIXER - A circuit for producing multiple switching control signals for a harmonic rejection mixer from multiple phases of a digital local oscillator signal is presented, wherein a first waveform combiner circuit is arranged to generate from the multiple phases of the digital local oscillator signal at least one switching control signal by logical combining two from the multiple phases of a digital local oscillator signal, and a second waveform combiner circuit is arranged to generate from the multiple phases of the digital local oscillator signal at least one first switching control signal by logical combining one from the multiple phases of a digital local oscillator signal with a predetermined signal having a static logical value. To compensate for phase errors the schematic topology of the first and the second waveform combiner circuit are arranged to be fully symmetrical to each other in that in the first waveform combiner, the circuit part for providing the function of the second waveform combiner is used as a dummy circuit, and in the second waveform combiner, a circuit part for providing the function of the first waveform combiner is used as a dummy circuit. Accordingly, the sources for providing the multiple phases of the digital local oscillator signal see the same load, and hence required phase shift is guaranteed. | 05-13-2010 |
20100120377 | DUAL-MODE MIXER CIRCUIT AND METHOD - The present invention relates to a mixer circuit and method of frequency transformation, wherein an input signal is switched in accordance with a first local oscillator signal and in accordance with at least one second local oscillator signal having a smaller duty cycle than said first local oscillator signal, or having a respective predetermined phase shift with respect to said first local oscillator signal. Output signals obtained by the switching in accordance with the first and at least one second local oscillator signals are summed and the polarity of one of said first local oscillator signal and said at least one second local oscillator signal is switched in response to a control input, to thereby switch between a harmonic-rejection mode and a sub-harmonic mixing mode. | 05-13-2010 |
20110050344 | OUTPUT STAGE FOR A DIGITAL RF TRANSMITTER, METHOD FOR PROVIDING AN RF OUTPUT SIGNAL IN A DIGITAL RF TRANSMITTER, AND DIGITAL RF TRANSMITTER - An output stage ( | 03-03-2011 |
20110164702 | POLAR TRANSMITTER - The present application relates to at least one digitally controlled oscillator and a data modulation device. More particularly, the digital polar transmitter comprises at least one digitally controlled oscillator configured to generate at least one frequency. The digital polar transmitter comprises a data modulation device, wherein the data modulation device comprises at least one data input terminal, at least one output terminal, and at least one frequency input terminal, wherein the output terminal is connected to the digitally controlled oscillator. The digital polar transmitter comprises a phase measuring device configured to measure phase information from the output signal of the data modulation device for every frequency sample. The digital polar transmitter comprises a phase error detecting device configured to detect a phase error at least depending on the measured phase information, wherein the phase error detecting device is configured to apply the detected phase error to the output signal of the data modulation device. | 07-07-2011 |
20110261914 | Digital Modulator - The present application relates to a digital modulator comprising an output stage comprising a number of unit cell arrays, and a sampling stage. The present application relates also to a communication device comprising said digital modulator, a method for digitally modulating and a computer program product. More particularly, the digital modulator comprises an output stage comprising a number of unit cell arrays, wherein the output stage comprises at least one carrier frequency signal input terminal configured to receive a carrier frequency signal. The digital modulator comprises a sampling stage connectable to the output stage, wherein the sampling stage is configured to oversample at least one data input signal. The digital modulator comprises at least one sampling clock generating device configured to generate at least one sampling clock signal depending on the number of arranged unit cell arrays and the carrier frequency signal. | 10-27-2011 |
20120033769 | MULTIMODE RECEIVER WITH A TRANSLATIONAL LOOP FOR INPUT MATCHING - A multimode receiver has a transconductance amplifier having an input terminal and adapted to receive a voltage RF signal and to deliver a current RF signal. The amplifier has a current mixer coupled to the transconductance amplifier and adapted to receive the current RF signal, the current mixer being adapted to combine the current RF signal with a signal generated by a local oscillator, the mixer generating an intermediate frequency signal having a frequency that equals a combination of a frequency of the current RF signal and a frequency of the local oscillator. A low-pass filter is coupled to the mixer and is adapted to generate a low-pass current signal. A transimpedance amplifier is coupled to the low-pass filter and is adapted to receive the low-pass current signal, the transimpedance amplifier being adapted to generate an intermediate frequency voltage signal proportional with the low-pass current signal. A first switch is adapted to receive a signal proportional with the intermediate frequency voltage signal at a first end, a second end being coupled to the input terminal and a second switch is coupled between the input terminal and a reference terminal. The first and second switches are mutually exclusive in an ON state in a specific mode of operation of the multimode receiver. | 02-09-2012 |
20130109337 | RF RECEIVER WITH VOLTAGE SAMPLING | 05-02-2013 |
Xin He, Weslre NL
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20100134154 | ODD NUMBER FREQUENCY DIVIDING CIRCUIT - A method and a frequency dividing circuit ( | 06-03-2010 |
Xin He, Denver, CO US
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20100018483 | DIESEL EMISSION REDUCTION USING INTERNAL EXHAUST GAS RECIRCULATION - A method for controlling combustion in a direct-injection diesel engine includes monitoring a crankshaft rotational position of a cylinder of the engine, monitoring an engine load, determining an intake stroke within the cylinder based upon the crankshaft rotational position, and when the engine load is less than a threshold engine load, opening an exhaust valve for the cylinder during a portion of the intake stroke. | 01-28-2010 |
20110232301 | METHOD FOR THERMOELECTRIC ENERGY CONVERSION IN AN EXHAUST GAS RECIRCULATION SYSTEM - A method for managing thermal energy in an internal combustion engine including an exhaust gas recirculation system and an engine cooling system includes recirculating a portion of an exhaust gas through the exhaust gas recirculation system that is in thermal communication with a first side of a thermoelectric device, flowing an engine coolant into thermal communication with a second side of a thermoelectric device, and controlling electric current between an electrical energy storage device and the thermoelectric device to transfer thermal energy between the recirculated exhaust gas and the engine coolant. | 09-29-2011 |
Xin He, Shanghai CN
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20090249356 | LOCK-FREE CIRCULAR QUEUE IN A MULTIPROCESSING SYSTEM - Lock-free circular queues relying only on atomic aligned read/write accesses in multiprocessing systems are disclosed. In one embodiment, when comparison between a queue tail index and each queue head index indicates that there is sufficient room available in a circular queue for at least one more queue entry, a single producer thread is permitted to perform an atomic aligned write operation to the circular queue and then to update the queue tail index. Otherwise an enqueue access for the single producer thread would be denied. When a comparison between the queue tail index and a particular queue head index indicates that the circular queue contains at least one valid queue entry, a corresponding consumer thread may be permitted to perform an atomic aligned read operation from the circular queue and then to update that particular queue head index. Otherwise a dequeue access for the corresponding consumer thread would be denied. | 10-01-2009 |
20090270116 | Device and Method for Replying to Received Text Messages - An electronic device and a method for replying to a received text message received at the electronic device. The method comprises composing a reply text message on a common display screen of the device whist concurrently displaying, on the common display screen, a body of text contained in the received text message. The method performs transmitting the reply text message without the body of text contained in the received text message and automatically removing, in response to the transmitting, the reply text message from the common display screen. | 10-29-2009 |
Xin He, Grosse Pointe, MI US
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20090151692 | METHOD AND APPARATUS FOR INJECTING FUEL INTO A COMPRESSION-IGNITION ENGINE - A method to manage and control engine operation includes injecting an initial mass of fuel into a combustion chamber to form a combustion charge, monitoring combustion and injecting a main mass of fuel into the combustion chamber substantially coincident with a start of combustion of the combustion charge. | 06-18-2009 |
Xin He, Sammamish, WA US
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20080270413 | Client-Specific Transformation of Distributed Data - A data store is distributed between a server and a client. The distributed data store includes global data. A transformation is applied to the global data to generate client-specific data based on the global data. The client-specific data is stored on the client which uses the client-specific data to perform tasks relating to the client-specific data. | 10-30-2008 |
20120072414 | QUERY PROCESSING ALGORITHM FOR VERTICALLY PARTITIONED FEDERATED DATABASE SYSTEMS - Querying data stores in a federation of data stores. A first search filter is accessed. The first search filter is constructed with one or more nested logical AND, OR, or NOT operands. The first search filter is normalized to a normalized search filter that is logically equivalent to the first search filter. The normalized search filter includes 3 or 4 levels. All first level operands are logically ORed. All second level operands are logically ANDed. All third level operands are at least one of parameters or logical NOTs. Any fourth level operands are parameters. The normalized search filter is used to search a plurality of data stores in a federation of data stores for information by searching different data stores for at least two or more of the top level operands. | 03-22-2012 |
20150254257 | SEAMLESS DATA MIGRATION ACROSS DATABASES - Techniques are disclosed for enabling the migration of data with minimized impact on consumers of the data. A data migration agent updates pointers to active data locations and coordinates a migration from a first data resource to a second data resource so that seamless migration may be carried out. A data access layer of a distributed computing environment can take advantage of the pointers and metadata written by the data migration agent to serve requests to resources of the distributed computing environment so that read availability is available regardless of migration status. | 09-10-2015 |
Xin He, Nanjing CN
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20110214463 | ANTAGONISTIC BACTERIA FOR CONTROLLING THE FUSARIUM WILT OF CONTINUOUS CROPPING BANANA AND THEIR MICROBIAL ORGANIC FERTILIZER - The present invention relates to the antagonistic bacteria for controlling the | 09-08-2011 |
Xin He, Ae Waalre NL
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20120019296 | Circuit With a Time to Digital Converter and Phase Measuring Method - Calibration data for calibrating time to digital conversion is obtained by switching a feed circuit ( | 01-26-2012 |
Xin He, Shenzhen CN
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20130122649 | METHOD FOR MANUFACTURING THIN FILM TRANSISTOR - Disclosed is a method for manufacturing a metal oxide thin film transistor. According to the method, an active layer having a high carrier concentration is formed, and then a channel region is oxidized by plasma having oxidbillity so that the channel region has a low carrier concentration while a source region and a drain region have high carrier concentrations. In addition, the threshold voltage of the transistor is controlled by the conditions under which the channel region of the transistor is subsequently oxidized by plasma having oxidbillity at a low temperature. Therefore, the controllability of the characteristics of the transistor is improved significantly, and the manufacturing process is simplified. | 05-16-2013 |
20130309808 | METHOD FOR MANUFACTURING TRANSISTOR - Designs and fabrication of dual-gate thin film transistors are provided. An active region and a top gate electrode of the transistor can be made of a transparent thin film material. A photoresist can be coated onto a surface of the transparent conductive thin film for forming the top gate electrode. Light is from the bottom of the substrate during exposure. After the development, a photoresist pattern aligned with the bottom gate electrode is formed on the surface of the conductive thin film. The top gate electrode aligned with the bottom gate electrode is formed by etching the conductive thin film. The bottom gate electrode can be used as a mask, which may save the cost for manufacturing the transistor and improve the accuracy of alignment between the top gate electrode and the bottom gate electrode and the performance of the dual-gate thin film transistor. | 11-21-2013 |
20160043227 | THIN FILM TRANSISTOR AND MANUFACTURING METHOD THEREOF - A method of manufacturing a thin film transistor, comprising: forming a gate electrode ( | 02-11-2016 |
Xin He, Sunnyvale, CA US
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20140160959 | Methods and Systems for Enhanced Round Trip Time (RTT) Exchange - Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations. | 06-12-2014 |
20140355462 | METHODS AND SYSTEMS FOR ENHANCED ROUND TRIP TIME (RTT) EXCHANGE - Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations. | 12-04-2014 |
Xin He, Basking Ridge, NJ US
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20140241159 | OPTIMIZATION OF TRANSMISSION CONTROL PROTOCOL (TCP) CONNECTIONS IN A WIRELESS NETWORK - Network parameters implemented in a number of network devices may be optimized. In one implementation, a device may receive values for a network parameters, the network parameters including network parameters associated with devices in a network. At least a first portion of the network parameters may relate to traffic control in transmission control protocol (TCP) sessions in the network and at least a second portion of the network parameters may relate to data transmission in a radio access interface in the network. The device may further receive values for performance indicators that define a performance of one or more aspects of the network. The device may further modify one or more of the network parameters based on the received values for the network parameters and based on the received performance indicators, to optimize performance of the network with respect to the performance indicators. | 08-28-2014 |
Xin He, Mountain View, CA US
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20140355461 | METHODS AND SYSTEMS FOR ENHANCED ROUND TRIP TIME (RTT) EXCHANGE - Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations. | 12-04-2014 |
Xin He, Princeton, NJ US
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20150277990 | System and Methods for Collaborative Query Processing for Large Scale Data Processing with Software Defined Networking - A system includes a task scheduler that works collaboratively with a flow scheduler; a network-aware task scheduler based on software-defined network, the task scheduler scheduling tasks according to available network bandwidth. | 10-01-2015 |
Xin He, Wuhan CN
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20160105999 | COOLING DEVICE AND COOLING FIN - A cooling device includes a cooler. The cooler includes a base, a plurality of cooling fins secured to the base, and a heat pipe inserting through the cooling fins. Each cooling fin includes a fin body and a pressed portion extending from the fin body. The fin body includes a hole area, which defines a receiving hole. A portion of the heat pipe extends through the receiving hole; the pressed portion includes at least one guiding portion, which is configured to guide air to flow towards the hole area from the fin body. | 04-14-2016 |