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Zheng Xu
Zheng Xu, Canton, MI US
| Patent application number | Description | Published |
|---|---|---|
| 20080196695 | EVENT-BASED DIRECT INJECTION ENGINE STARTING WITH A VARIABLE NUMBER OF INJECTIONS - A method for starting an internal combustion engine having direct fuel injection into a cylinder, comprising of only for a first combustion event under selected conditions during an engine start, directly injecting fuel to the cylinder at least twice, where each of said two injections at least partially occur during a compression stroke. | 08-21-2008 |
| 20080196696 | DIRECT INJECTION EVENT-BASED ENGINE STARTING - A method for starting an internal combustion engine having direct fuel injection, comprising of adjusting a number of direct injections per combustion cycle based on a cylinder event number from a first cylinder event. | 08-21-2008 |
| 20110100314 | DIRECT INJECTION EVENT-BASED ENGINE STARTING - A method for starting an internal combustion engine having direct fuel injection, comprising of adjusting a number of direct injections per combustion cycle based on a cylinder event number from a first cylinder event. | 05-05-2011 |
| 20110162621 | Shallow Piston Bowl And Injector Spray Pattern For A Gasoline, Direct-Injection Engine - A combustion system for a direct-injection, spark-ignition engine is disclosed. A side-mounted fuel injector located outboard the intake valves directs multiple fuel jets into a shallow, spherical bowl formed in a domed piston. Both good mixing to facilitate good air utilization with early injection and an ignitable mixture at the spark plug with late injection to facilitate cold start are provided with such a combustion system. Because the bowl is smooth and shallow, the surface area of the combustion chamber is less than with a deeper bowl of complicated shape. Lowering surface area in the combustion chamber leads to improved fuel economy. | 07-07-2011 |
| 20120191328 | DIRECT INJECTION EVENT-BASED ENGINE STARTING - A method for starting an internal combustion engine having direct fuel injection, comprising of adjusting a number of direct injections per combustion cycle based on a cylinder event number from a first cylinder event. | 07-26-2012 |
Zheng Xu, Shanghai CN
| Patent application number | Description | Published |
|---|---|---|
| 20100104882 | ALIPHATIC POLYESTER SHEET AND MOLDED BODY COMPOSED OF THE SAME - An aliphatic polyester-based sheet including at least Layer A including an aliphatic polyester, wherein X | 04-29-2010 |
Zheng Xu, Staten Island, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20090302952 | Systems And Methods For Distributing A Clock Signal - Systems and methods for distributing a clock signal are disclosed. In some embodiments, systems for distributing a clock signal include a plurality of resonant oscillators, each comprising an inductor; and a differential clock grid that distributes the clock signal. The differential clock grid is coupled to the plurality of resonant oscillators and the clock signal, and the inductances of the inductors are configured such that a resonant frequency of the plurality of resonant oscillators is substantially equal to the frequency of the clock signal. | 12-10-2009 |
Zheng Xu, Foster City, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090233438 | SELF-IONIZED AND INDUCTIVELY-COUPLED PLASMA FOR SPUTTERING AND RESPUTTERING - A magnetron sputter reactor for sputtering deposition materials such as tantalum, tantalum nitride and copper, for example, and its method of use, in which self-ionized plasma (SIP) sputtering and inductively coupled plasma (ICP) sputtering are promoted, either together or alternately, in the same or different chambers. Also, bottom coverage may be thinned or eliminated by ICP resputtering in one chamber and SIP in another. SIP is promoted by a small magnetron having poles of unequal magnetic strength and a high power applied to the target during sputtering. ICP is provided by one or more RF coils which inductively couple RF energy into a plasma. The combined SIP-ICP layers can act as a liner or barrier or seed or nucleation layer for hole. In addition, an RF coil may be sputtered to provide protective material during ICP resputtering. In another chamber an array of auxiliary magnets positioned along sidewalls of a magnetron sputter reactor on a side towards the wafer from the target. The magnetron preferably is a small, strong one having a stronger outer pole of a first magnetic polarity surrounding a weaker outer pole of a second magnetic polarity and rotates about the central axis of the chamber. The auxiliary magnets preferably have the first magnetic polarity to draw the unbalanced magnetic field component toward the wafer. The auxiliary magnets may be either permanent magnets or electromagnets. | 09-17-2009 |
| 20090269922 | Method of depositing a metal seed layer over recessed feature surfaces in a semiconductor substrate - We disclose a method of depositing a metal seed layer on a wafer substrate comprising a plurality of recessed device features. The method comprises depositing a first portion of the metal seed layer on the wafer via plasma deposition at a sufficient ratio of wafer substrate bias to DC source power that bottom coverage is achieved while resputtering of surfaces of the recessed device features is inhibited. The method also comprises depositing a second portion of the metal seed layer at a ration of substrate RF bias to DC source power such that resputtering is not inhibited. | 10-29-2009 |
| 20110256716 | Method of depositing a uniform barrier layer and metal seed layer with reduced overhang over a plurality of recessed semiconductor features - A method of depositing a metal seed layer with underlying barrier layer on a wafer substrate comprising a plurality of recessed device features. A first portion of the barrier layer is deposited on the wafer substrate without excessive build-up of barrier layer material on the openings to the plurality of recessed device features, while obtaining bottom coverage without substantial sputtering of the bottom surface. Subsequently, a metal seed layer is deposited using the same techniques used to deposit the barrier layer, to avoid excessive build up of metal seed layer material on the openings to the features, with minimal sputtering of the barrier layer surface. | 10-20-2011 |
Zheng Xu, Plesanton, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090053888 | Method of depositing a diffusion barrier layer which provides an improved interconnect - A method of depositing a duffusion barrier layer with overlying conductive layer or fill which lowers resistivity of a semiconductor device interconnect. The lower resistivity is achieved by inducing the formation of alpha tantalum within a tantalum-comprising barrier layer. | 02-26-2009 |
Zheng Xu, Honghu City CN
| Patent application number | Description | Published |
|---|---|---|
| 20090010009 | LED FLAT-PLATE TYPE MULTI-CHIP HIGH POWER LIGHT SOURCE - The present invention provides a LED flat-plate type multi-chip high power light source comprising a heat dissipating substrate, a reflecting cover mounted on the heat dissipating substrate, LEDs mounted on the heat dissipating substrate and in the reflecting cover, a circuit board embedded in the heat dissipating substrate connecting to the LEDs, and the circuit board also connecting to a socket set in the heat dissipating substrate. The heat dissipating substrate is made of high heat conduction metal. In the present invention, the heat dissipating substrate is made of high heat conduction metal, and the heat conducting pole is abolished. Comparing with the conventional art, the present invention decreases the heat dissipating path, increases the sectional area, and eliminates the intermediate link of high thermal resistance. | 01-08-2009 |
| 20090010010 | LED DIRECT-PLUGGING TYPE MULTI-CHIP HIGH POWER LIGHT SOURCE - The present invention provides a LED direct-plugging type multi-chip high power light source, comprising a heat dissipating substrate, a protecting rubber ring mounted at the obverse of the heat dissipating substrate, LEDs fixed on the heat dissipating substrate and in the protecting rubber ring, the heat dissipating substrate being provided with two through holes impenetrating its obverse and inverse, in each of the two through holes separately provided with a pin connecting to the LEDs, one end of the pin inserted into the through hole and the other end of the pin led out from the inverse of the heat dissipating substrate to the outside of the heat dissipating substrate, and the part of the pins inserted in the through holes being separated from the heat dissipating substrate by a dielectric. The heat dissipating substrate is made of high heat conduction metal. In the present invention, the heat dissipating substrate is made of high heat conduction metal, and the heat conducting pole is abolished. Comparing with the conventional art, the present invention decreases the heat dissipating path, increases the sectional area, and eliminates the intermediate link of high thermal resistance. The present invention increases the power of a single light source, decreases the attenuation of light greatly, and increases the useful life greatly. | 01-08-2009 |
Zheng Xu, Beijing CN
| Patent application number | Description | Published |
|---|---|---|
| 20080198808 | SYSTEM AND METHOD FOR PERFORMING HANDOVER IN WiMAX MOBILE COMMUNICATION SYSTEM - Disclosed is a system and a method for performing handover in a Worldwide interoperability for Microwave Access (WiMAX) mobile communication system supporting broadband wireless access. The system includes a plurality of Mobile Stations (MSs); at least one distributed antenna having the ability to perform simultaneous communications with the plurality of MSs; and a base station connected to the at least one distributed antenna through optical fibers for performing communications and handovers with the multiple MSs. | 08-21-2008 |
| 20080200211 | SYSTEM AND METHOD FOR FORMING CELL BY USING DISTRIBUTED ANTENNAS IN WIMAX MOBILE COMMUNICATION SYSTEM - A system and a method for forming a cell by using distributed antennas in a World interoperability for Microwave Access (WiMAX) mobile communication system supporting a broadband wireless access communication system. A virtual cell is formed with a specific Mobile Station (MS) as a central part of the virtual cell by using distributed antennas, which improves the transmission capacity and the performance of an overall network system without changing the structure of a backbone network and the interface of the overall network system. The system includes, multiple MSes; distributed antennas for perform simultaneous communications with at least one MS among the multiple MSes, and for forming one virtual cell by communicating with the multiple MSes; and a Base Station (BS), which is typically connected to the distributed antennas through optical fibers, for communicating with the MSes. | 08-21-2008 |
| 20080212703 | METHOD AND APPARATUS FOR SUBCHANNEL ASSIGNMENT FOR SUPPRESSING INTERANTENNA INTERFERENCE IN OFDMA SYSTEM - Disclosed is a method and an apparatus for subchannel assignment for suppressing inter-antenna interference in an Orthogonal Frequency Division Multiplexing Access (OFDMA) system based distributed wireless communication system equipped with antennas that are randomly distributed in a geographical manner and can simultaneously communicate with multiple Subscriber Stations (SSs). The method includes selecting and obtaining access to distributed antennas which satisfy the data transmission rate that an SS requires and with which the SS can communicate; re-queuing a distributed antenna having the maximum transmitted power within the same cell in high priority; and assigning subchannels to the relevant distributed antennas in an order from the relevant distributed antenna having the high priority. | 09-04-2008 |
Zheng Xu, Union City, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110246526 | SERVICE LEVEL AGREEMENT BASED STORAGE ACCESS - A method and a system implementing a service level agreement based storage access system. A service level agreement based storage access system presents a single interface for data storage consumers and translates generic data operation requests to data operation request specific to a storage server. The SLA based storage access system also monitors storage server performance and may throttle processes to ensure service level agreements are not violated. | 10-06-2011 |
Zheng Xu, Hangzhou City CN
| Patent application number | Description | Published |
|---|---|---|
| 20120262663 | ELECTRICALLY TUNABLE LIQUID CRYSTAL LENS SET WITH CENTRAL ELECTRODE - A liquid crystal lens cell set includes a plurality of liquid crystal lenses overlapping to each other. Each of the liquid crystal lenses is supported between a pair of flat layers. One of the layers supports a planar electrode made of ITO. The other electrode, also formed of ITO, is supported in the center of the opposing substrate and projects toward the center of the liquid crystal layer. A power supply creates a potential difference between the electrodes and imposes a non-uniform electric field on the liquid crystal modules which aligns them in which a way as to act as a lens. By varying voltage between the electrodes the focal length of the lens may be controlled. A central electrode may be in the form of a beam or of a pointed tip. An electrode having a central hole may be associated with the central electrode or the planar electrode. | 10-18-2012 |