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Shaohua

Shaohua Huang, Xiamen CN

Patent application number	Description	Published
20120273814	Light Emitting Diode with a Current Concentrating Structure - A light emitting diode (LED) includes a transparent insulating layer; and at least one transparent conductive oxide layer substantially enclosing the transparent insulating layer, wherein the transparent insulating layer and the at least one transparent conductive oxide layer are configured to distribute a current through the LED toward a peripheral region of the LED.	11-01-2012

Shaohua Tang, Guangzhou CN

Patent application number	Description	Published
20130058479	HIERARCHICAL GROUP KEY MANAGEMENT APPROACH BASED ON LINEAR GEOMETRY - A hierarchical group key management approach based on linear geometry is disclosed. The approach includes the following steps: step 1, the central controller selects a finite field F, a mapping parameter f and a constant N for use in the group; the central controller selects a N-dimensional private vector for each subgroup; step 2, the central controller selects a mapping parameter r and maps the private vector to a new set of vectors in the vector space; step 3, the central controller selects a subgroup key for each subgroup and constructs n linear systems of equations, and solves the solution of the linear equation systems, that is, the public vector, and the n sets of public vectors form a public vector; the public vector and the mapping parameter r are broadcasted or multicasted by the central controller to all the subgroup controllers; step 4, each subgroup controller solves the confidential vector of its own, and a set of key vectors is obtained by linear transformation of the confidential vector and the public matrix. This invention is simple and flexible, and is effective against brute-force attacks.	03-07-2013

Shaohua Wang, Aojiang Town CN

Patent application number	Description	Published
20080233261	Fish Maw Gelatin Products And Preparation Process Thereof - The present invention relates to a fish maw glue product and preparation process thereof. The product is characterized in that having tiny yellow and transparent appearance, being powdery, having moisture content of less than 10%, and particle size of 80-200 mesh. Its preparation process includes: pre-treating raw material, washing with water, preparing glue, drying, obtaining glue, pulverizing, packing under vacuum. The process is advanced, easy to handle. After people eat the product, it is easy to digest and to absorb, and has the functions of improving nutrition and nature of a drug. Said fish maw glue may further be made into slice, gel or glue liquor.	09-25-2008

Shaohua Wu, Heilongjiang CN

Patent application number	Description	Published
20110253066	W-STAGED FLAME BOILER FOR MULTI-STAGE COMBUSTION WITH MULTI-EJECTION AND ITS METHOD THEREOF - A method for a flame boiler with multi-stage combustion with multi-ejection, includes the steps of ejecting inner and outer secondary air flows with speed of 35-65 m/s to guide a fuel-rich pulverized coal flow with speed of 10-20 m/s into a lower chamber to provide first and second combustion stages, ejecting lower secondary air flows with speed of 35-65 m/s into the lower chamber to further guide the pulverized coal so as to provide a third combustion stage. The system includes a lower chamber, an upper chamber, a combustion chamber, fuel-rich pulverized coal flow nozzles, fuel-lean pulverized coal flow nozzles respectively provided at the front and rear boiler arches, and lower secondary air nozzles provided at the front and rear water cooled walls. The combustion of the pulverized coal flow with W-shaped flowing path within the boiler is adapted to reduce NO	10-20-2011

Shaohua Wu, Nangang District Harbin CN

Patent application number	Description	Published
20100018445	Low Nox Swirl Coal Combustion Burner - A burner includes a primary air-coal mixture duct coaxially extended through a secondary air wind box, a pulverized coal separator supported within the primary air-coal mixture duct, a secondary air duct including an inner secondary air duct and an outer secondary air duct coaxially formed around the primary air-coal mixture duct, a primary air-coal mixture conical outlet coupled with the outlet of the primary air-coal mixture duct, and inner secondary air and outer conical outlets coupled with the outlets of the inner secondary air and outer secondary air ducts respectively. The conical outlets are arranged to delay the mixing time of the primary air-coal mixture and secondary air flows through the primary air-coal mixture and secondary air ducts and to prolong the residence time in the center recirculation zone under the reduction ability so as to effectively reduce the formation of NOx.	01-28-2010

Shaohua Wu, Shenzen City CN

Patent application number	Description	Published
20100020769	A Method for Wireless Terminal Dynamically Switching Window in a Wireless LAN Environment - The invention discloses a method for wireless terminal dynamically switching window in a wireless LAN environment. The wireless LAN comprises several access points and stations which establish wireless communication connections with the access points. The stations can switch the current access window by scanning. The method characterizes in that including following steps: giving the switching window an initial value through the stations; the stations judge if there is another access point of which the signal quality is greater than that of the current access window through scanning wireless channels; if so, further judge if the stations are in a frequently handoff status, if so, the handoff judging result is not allowed to switch window; if not, the handoff judging result is allowed to switch window. The present invention can adaptively adjust the stations' switch windows according to the stations' handoff status and frequently handoff status. On one hand, the invention avoids the occurring of frequently handoff by changing the handoff conditions of the stations, increasing the access efficiency of the stations which is in the handoff status and in a wireless LAN environment, while maintaining the sensitivity of the stations which is in the handoff status, ensuring the quality of the wireless links between the stations and the access points.	01-28-2010

Shaohua Yu, Wuhan City CN

Patent application number	Description	Published
20100172257	Internet Real-Time Deep Packet Inspection and Control Device and Method - A deep packet inspection and control device includes a first rule table unit for storing a rule table including a first set of rule entries which are pre-defined or generated dynamically; a first scanning unit for receiving a first real-time packet data stream from the internet, and scanning the first real-time packet data stream according to a scanning window defined by the first set of rule entries; a first analysis unit for matching the first real-time packet data stream with the first set of rule entries in the scanning window of the first scanning unit, and outputting a matching result; and a first rule linkage unit for performing linkage control on the first real-time packet data stream to be output back to the internet according to the matching result output from the first analysis unit.	07-08-2010
20120141135	Optical Communication System, Device and Method Employing Advanced Coding and High Modulation Order - A transmitting device, a receiving device, an optical communication system, and associated methods are provided. The transmitting device transmits an optical signal containing data, and comprises: an optical tone generator for generating at least one optical tone; at least one encoder for performing advanced coding on at least one data signal respectively, each of the at least one data signal carrying a part of the data; at least one mapper for performing high order modulation on the at least one coded data signal; and an up-converter for up-converting the at least one high-order-modulated data signal into the optical signal to be outputted through the at least optical tone. Thereby, high speed (e.g., over 1-Tb/s) transmission per single channel over a long-haul distance (e.g. over 1000-km) with error-free recovery may be achieved.	06-07-2012
20120141138	System, Devices and Methods for Subcarrier Recovery at Local Oscillator Frequency in Optical OFDM System - The invention provides methods, devices and a system for recovering the corrupted subcarrier at the local oscillator (LO) frequency in coherent optical OFDM transmission. The method includes performing advanced coding on a data signal to obtain an encoded signal; performing high order modulation on the encoded signal to obtain a high-order-modulated signal; performing OFDM modulation on the high-order-modulated signal to obtain an electrical OFDM signal; and performing up-conversion on the electrical OFDM signal to obtain an optical OFDM signal to be output. The inventive technique of employing advanced coding with low rate combining with higher order modulation can be used to reduce the decoding bit error ratio (bit error rate) level, so that the LO subcarrier can be fully recovered while the bandwidth of the transmitted signal may be substantially the same as the existing optical OFDM system, and there is no need to add any feedback control module or feedback loop support or the like to the existing optical OFDM system, so that the complexity of the receiving side can be reduced.	06-07-2012
20120294618	Reconfigurable Optical Add/Drop Multiplexer and Reconfigurable Optical Add/Drop Multiplexing Method - A reconfigurable optical add/drop multiplexer and a reconfigurable optical add/drop multiplexing method are provided. The reconfigurable optical add/drop multiplexer comprises: an optical processing unit for receiving a first optical signal containing a plurality of optical channels, processing the first optical signal to generate a second optical signal which is a part of the first optical signal, and outputting the second optical signal; and a coherent detection unit for performing a coherent detection on the second optical signal so as to separate from the second optical signal an optical channel contained therein, and outputting the optical channel. With the reconfigurable optical add/drop multiplexer and the reconfigurable optical add/drop multiplexing method, any number of degrees can be supported, and adding/dropping of an optical channel with any wavelength and any bandwidth to/from any direction can be achieved, so that requirements of being colorless, directionless, contentionless and gridless can be satisfied.	11-22-2012

Shaohua Zhang, Jiangxi CN

Patent application number	Description	Published
20110140080	METHOD FOR FABRICATING InGaAIN LIGHT-EMITTING DIODES WITH A METAL SUBSTRATE - One embodiment of the present invention provides a method for fabricating light-emitting diodes. The method includes etching grooves on a growth substrate, thereby creating mesas on the growth substrate. The method further includes fabricating on each of the mesas an indium gallium aluminum nitride (InGaAlN) multilayer structure which contains a p-type layer, a multi-quantum-well layer, and an n-type layer. In addition, the method includes depositing one or more metal substrate layers on top of the InGaAlN multilayer structure. Moreover, the method includes removing the growth substrate. Furthermore, the method includes creating electrodes on both sides of the InGaAlN multilayer structure, thereby resulting in a vertical-electrode configuration.	06-16-2011
20110143467	METHOD FOR FABRICATING INGAAIN LIGHT EMITTING DEVICE ON A COMBINED SUBSTRATE - One embodiment of the present invention provides a method for fabricating an InGaAlN light-emitting semiconductor structure. During the fabrication process, at least one single-crystal sacrificial layer is deposited on the surface of a base substrate to form a combined substrate, wherein the single-crystal sacrificial layer is lattice-matched with InGaAlN, and wherein the single crystal layer forms a sacrificial layer. Next, the InGaAlN light-emitting semiconductor structure is fabricated on the combined substrate. The InGaAlN structure fabricated on the combined substrate is then transferred to a support substrate, thereby facilitating a vertical electrode configuration. Transferring the InGaAlN structure involves etching the single-crystal sacrificial layer with a chemical etchant. Furthermore, the InGaAlN and the base substrate are resistant to the chemical etchant. The base substrate can be reused after the InGaAlN structure is transferred.	06-16-2011

Shaohua Zhang, Shanghai CN

Patent application number	Description	Published
20110113124	METHOD AND DEVICE FOR DOWNLOADING MULTIMEDIA CONTENTS AT HIGH SPEED IN THE INTERNET - In order to download multimedia content with hidden address information on the Internet to the user terminal, the invention proposes obtaining address information of the multimedia contents to be downloaded with hidden address information in the predetermined multimedia server, when a multimedia player of the user terminal obtains the multimedia contents to be downloaded from the predetermined multimedia server, and obtaining information related to a plurality of network resources comprising the same multimedia contents as the multimedia contents to be downloaded, according to the address information of the multimedia contents to be downloaded in the predetermined multimedia server, then downloading the multimedia contents to be downloaded, according to the information related to the plurality of network resources.	05-12-2011

Shaohua Zhao, Hong Kong CN

Patent application number	Description	Published
20120170670	OFDM SYMBOL STRUCTURE FOR POWER LINE COMMUNICATION - A method for packing data over a power line communication channel is disclosed herein. The method comprises packing data into symbol body, adding a first pad in front of the symbol body to form a full symbol and determining the time instance in which the peak absolute voltage point of the AC electric power occurs. And subsequently it is to send the full symbol through the power line in a manner synchronized with the time instance aforesaid. Based on the interference condition detection, the invention allows receiver side adaptation.	07-05-2012

Shaohua Zhou, Dhahran SA

Patent application number	Description	Published
20120118571	Tool for recovering junk and debris from a wellbore of a well - A downhole tool incorporates a junk catcher with full body casing drift. It is made of an inner tubular member that conveys the hydraulic power or circulating fluid to rearward and outward facing jet nozzles for directly flushing downhole junks in front of the tool (if encountered) into a junk collecting barrel equipped with individual magnets to retain magnetically attractive metal junks. The barrel is made of high grade steel material with outer diameter matching the full drift of wellbore casing. The front, or the lower end of the outer body is addressed with tungsten carbide cutters to effectively handle metal junks in case of milling action is required. The back, or upper end of the barrel has return flow ports equipped with a filter screen to retain small, medium and large size junks while fluid is pumped through the tool.	05-17-2012
20120241154	SLIDING STAGE CEMENTING TOOL - A downhole tool provided within a casing string for use in cement staging operations. The tool includes an inflatable packer that is integral to the body of the tool and ports in sides of the tool. The ports are selectively opened and closed for circulating cement from within the tool so that cement can flow between the casing string and a wellbore. The ports are actuated by sliding the casing string upward or downward within the wellbore. The packer can be pressure tested after being set to ensure its efficacy.	09-27-2012
20120261127	SLIDING STAGE CEMENTING TOOL AND METHOD - A downhole tool provided within a casing string for use in cement staging operations. The tool includes a sleeve in the tool that selectively slides downward under pressure to expose ports formed in a side wall of the tool. Also, an annulus through the tool is selectively blocked so that cement in the casing string flows radially outward through the ports and into an annulus between the tool and a wellbore. An inflatable packer is included that is integral to the body of the tool and is inflated with a fluid that is pushed into the packer as the sleeve slides downward. An optional expanding agent can be included in the packer that is a metal oxide and is activated with the addition of water.	10-18-2012
20120261138	CIRCULATION AND ROTATION TOOL - A tool circulates drilling fluid through and rotates a pipe string while making up or breaking out a stand of pipe. The tool includes a tubular member defining a central bore having an axis, wherein the tubular member comprises an upper tubular member and a lower tubular member, and wherein the upper tubular member and the lower tubular member are configured to alternately rotate independently and in unison. The tool also includes a central bore valve coupled to the upper member, and at least one radial valve coupled to the upper tubular member axially below the central bore valve.	10-18-2012