Patents by Inventor Dongsheng Zhang
Dongsheng Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20200168426Abstract: An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.Type: ApplicationFiled: June 1, 2018Publication date: May 28, 2020Applicants: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun TAN, Wenhui HUANG, Chuanxiang TANG, Qingxiu JIN, Dongsheng ZHANG, Qun LUO, Donghai LIU, Luming ZHANG, Peidong WU
-
Publication number: 20200170097Abstract: A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.Type: ApplicationFiled: May 29, 2018Publication date: May 28, 2020Applicants: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun TAN, Wenhui HUANG, Chuanxiang TANG, Qingxiu JIN, Dongsheng ZHANG, Qun LUO, Donghai LIU, Luming ZHANG, Peidong WU
-
Patent number: 10629402Abstract: A cathode assembly, an X-ray source and a CT device are provided. The cathode assembly includes a ceramic plug having a first and second end portions. Four wiring terminals and a protruding positioning part are provided on the first end portion. An internal cavity is formed in the ceramic plug, and a cathode is provided therein. The cathode has a filament with a positive and negative electrode leads. A grid is provided on the second end portion and has a grid voltage signal line. The cathode has a cathode surface lead. The positive electrode lead, the negative electrode lead, the grid voltage signal line and the cathode surface lead are electrically connected to one of the wiring terminals, respectively. The ceramic socket has four wiring tubes which may be electrically connected with the four wiring terminals.Type: GrantFiled: December 28, 2017Date of Patent: April 21, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Wenhui Huang, Dongsheng Zhang, Qingxiu Jin, Chengjun Tan, Donghai Liu, Qun Luo, Chuanxiang Tang
-
Publication number: 20190090336Abstract: The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.Type: ApplicationFiled: August 30, 2018Publication date: March 21, 2019Inventors: Yaohong Liu, Ziran Zhao, Jinsheng Liu, Huaibi Chen, Liang Zhang, Dongsheng Zhang
-
Publication number: 20180190465Abstract: A cathode assembly, an X-ray source and a CT device are provided. The cathode assembly includes a ceramic plug having a first and second end portions. Four wiring terminals and a protruding positioning part are provided on the first end portion. An internal cavity is formed in the ceramic plug, and a cathode is provided therein. The cathode has a filament with a positive and negative electrode leads. A grid is provided on the second end portion and has a grid voltage signal line. The cathode has a cathode surface lead. The positive electrode lead, the negative electrode lead, the grid voltage signal line and the cathode surface lead are electrically connected to one of the wiring terminals, respectively. The ceramic socket has four wiring tubes which may be electrically connected with the four wiring terminals.Type: ApplicationFiled: December 28, 2017Publication date: July 5, 2018Inventors: Wenhui HUANG, Dongsheng ZHANG, Qingxiu JIN, Chengjun TAN, Donghai LIU, Qun LUO, Chuanxiang TANG
-
Publication number: 20180190464Abstract: An electron gun, an X-ray source and a CT device are provided. The electron gun includes a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion; an internal cavity is formed in the body and has an opening positioned on the second end portion,d a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion.Type: ApplicationFiled: December 28, 2017Publication date: July 5, 2018Inventors: Wenhui HUANG, Dongsheng ZHANG, Qingxiu JIN, Chengjun TAN, Donghai LIU, Qun LUO, Chuanxiang TANG
-
Patent number: 9571116Abstract: An adaptive filtering digital calibration circuit of ADC, which includes a control module, a fixed-point adder, and a fixed-point multiplier; the control module includes a finite-state machine, a shift register, and a register array; the fixed-point adder allows an addend and an augend to be added together after being encoded; the control module controls to complete all the calibration algorithmic operation, which includes the following steps: the control module controls to obtain an original binary value from an external ADC; calculating an error value according to weight and disturbance signals, and carrying out the weight updating operation and the disturbance signal updating operation according to the error value; carrying out the gain calibration operation; and carrying out the final result operation. The present invention also discloses a method of the adaptive filtering digital calibration of ADC.Type: GrantFiled: December 30, 2015Date of Patent: February 14, 2017Assignee: Shanghai Huahong Grace Semiconductor Manufacturing CorporationInventor: Dongsheng Zhang
-
Publication number: 20160335436Abstract: Systems, apparatuses and methods may provide for locating operating system (OS) kernel information and user mode code in physical memory, wherein the kernel information includes kernel code and kernel read only data, and specifying permissions for the kernel information and the user code in an extended page table (EPT). Additionally, systems, apparatuses and methods may provide for switching, in accordance with the permissions, between view instances of the EPT in response to one or more hardware virtualization exceptions.Type: ApplicationFiled: December 24, 2015Publication date: November 17, 2016Inventors: Harshawardhan Vipat, Manohar R. Castelino, Dongsheng Zhang, Kuo-Lang Tseng
-
Publication number: 20160233875Abstract: An adaptive filtering digital calibration circuit of ADC, which includes a control module, a fixed-point adder, and a fixed-point multiplier; the control module includes a finite-state machine, a shift register, and a register array; the fixed-point adder allows an addend and an augend to be added together after being encoded; the control module controls to complete all the calibration algorithmic operation, which includes the following steps: the control module controls to obtain an original binary value from an external ADC; calculating an error value according to weight and disturbance signals, and carrying out the weight updating operation and the disturbance signal updating operation according to the error value; carrying out the gain calibration operation; and carrying out the final result operation. The present invention also discloses a method of the adaptive filtering digital calibration of ADC.Type: ApplicationFiled: December 30, 2015Publication date: August 11, 2016Applicant: SHANGHAI HUAHONG GRACE SEMICONDUCTOR MANUFACTURING CORPORATIONInventor: Dongsheng Zhang
-
Patent number: 8948586Abstract: There are disclosed systems and methods for detecting whether an Optical Network Unit (ONU) in a network may be causing a communications interference due to laser overlap. In one embodiment, an Optical Line Terminal (OLT) selects a pair of ONUs suspected of possibly causing laser overlap. The OLT then grants a first window to a first ONU for transmitting a first message, and grants to another ONU different from the pair of ONUs a second window for transmitting a second message. If the first message is not received by the OLT, then the OLT indicates that the first ONU may be causing laser overlap. In another embodiment, the OLT grants to an ONU a window for transmitting a message to the OLT. If the message is not received by the OLT when expected, then the OLT indicates that the ONU may be causing laser overlap. Other embodiments are disclosed.Type: GrantFiled: December 15, 2011Date of Patent: February 3, 2015Assignee: Cortina Access, Inc.Inventors: Dongsheng Zhang, Eugene W. Lee, Wei Yao
-
Patent number: 8913549Abstract: There are disclosed systems and methods for detecting and controlling congestion in an Optical Line Terminal (OLT). The OLT has a plurality of ports. Each port of the plurality of ports communicates with at least one Optical Network Unit (ONU), and each port of the plurality of ports has a respective enforced maximum upstream bandwidth. For example, the maximum upstream bandwidth may be enforced by a Dynamic Bandwidth Allocation (DBA) algorithm. The OLT further includes an uplink port through which data received from each of the plurality of ports are transmitted. In one embodiment, if there is congestion of the data at the uplink port, then the enforced maximum upstream bandwidth for at least one port of the plurality of ports is modified.Type: GrantFiled: August 11, 2011Date of Patent: December 16, 2014Assignee: Cortina Access, Inc.Inventors: Abhimanyu Das, Eugene Lee, Deyi Dong, Dongsheng Zhang
-
Patent number: 8842529Abstract: A method of operation of a network transport system includes: determining a congestion mode based on a total bandwidth request meeting or exceeding a bandwidth threshold, where the congestion mode indicates a level of network traffic and the total bandwidth request is a sum of all bandwidth requests for accessing the network; calculating a fixed information rate schedule grant based on a fixed information rate list to create a bandwidth grant for a fixed information rate request; calculating a low latency schedule grant based on a low latency list to create the bandwidth grant for a low latency request; calculating a main schedule grant for allocating an available bandwidth based on the congestion mode, where the main schedule grant is calculated using a weighted maximum-minimum fairness method when the congestion mode indicates congestion; and generating a grant packet for defining a transmission schedule of a first network unit.Type: GrantFiled: April 2, 2010Date of Patent: September 23, 2014Assignee: Cortina Systems, Inc.Inventors: Abhimanyu Das, Deyi Dong, Eugene Lee, Dongsheng Zhang
-
Patent number: 8699885Abstract: There are disclosed techniques for power control in an Optical Network Unit (ONU) of a Passive Optical Network (PON). In one embodiment, the supply of power to an optical transmitter is controlled in accordance with information defining a plurality of transmission windows during which data can be transmitted from the ONU, in order to achieve the following: (1) to provide power to the optical transmitter beginning at a predetermined time in advance of a transmission window to ensure a laser in the optical transmitter is ready to begin transmitting the data at the start of the transmission window; and (2) to refrain from providing full power to the optical transmitter between transmission windows when the duration of time between the transmission windows is greater than a predetermined length.Type: GrantFiled: May 12, 2011Date of Patent: April 15, 2014Assignee: Cortina Systems, Inc.Inventors: Dongsheng Zhang, Eugene W. Lee
-
Patent number: 8599584Abstract: The present invention relates to a power feedback device, including: an AC input power source, which is three-phase or multi-phase AC, or three-phase or multi-phase AC in which the output terminal is connected in series with an inductor, for generating power; a plurality of power converting units, the input terminals of which are respectively connected with two phases of the AC input power source, for power converting the two phases of AC generated by the AC input power source respectively; an isolating transformer, the primary side of which is a three-phase winding and connected with a power network, the secondary side of which is multi-path of three-phase windings and connected with the output terminals of the plurality of power converting units, for feeding the AC converted by the plurality of power converting units back to the power network.Type: GrantFiled: March 12, 2009Date of Patent: December 3, 2013Assignee: New Energy Power CompanyInventor: Dongsheng Zhang
-
Publication number: 20130156423Abstract: There are disclosed systems and methods for detecting whether an Optical Network Unit (ONU) in a network may be causing a communications interference due to laser overlap. In one embodiment, an Optical Line Terminal (OLT) selects a pair of ONUs suspected of possibly causing laser overlap. The OLT then grants a first window to a first ONU for transmitting a first message, and grants to another ONU different from the pair of ONUs a second window for transmitting a second message. If the first message is not received by the OLT, then the OLT indicates that the first ONU may be causing laser overlap. In another embodiment, the OLT grants to an ONU a window for transmitting a message to the OLT. If the message is not received by the OLT when expected, then the OLT indicates that the ONU may be causing laser overlap. Other embodiments are disclosed.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Applicant: CORTINA SYSTEMS, INC.Inventors: Dongsheng ZHANG, Eugene W. LEE, Wei YAO
-
Publication number: 20130070489Abstract: The disclosure discloses an electric energy conversion device and system, to solve the problems of severe harmonic pollution, low power factor during the electric energy feedback from a power generation device to a power grid in the conventional art. The electric energy conversion device comprises: a plurality of single-phase rectifier bridge circuits, a first input ends of the a plurality of single-phase rectifier bridge circuits, and a second input ends of the a plurality of single-phase rectifier bridge circuits, wherein two input ends of each three-phase fully-controlled bridge circuit are connected with two output ends of each the rectifier bridge circuit respectively. Through the technical solution of the disclosure, the waveform coefficient of the current of the power generation device is improved, the harmonic wave is reduced, and the power factor is improved.Type: ApplicationFiled: August 18, 2010Publication date: March 21, 2013Applicant: NEW ENERGY POWER COMPANYInventor: Dongsheng Zhang
-
Publication number: 20130039182Abstract: There are disclosed systems and methods for detecting and controlling congestion in an Optical Line Terminal (OLT). The OLT has a plurality of ports. Each port of the plurality of ports communicates with at least one Optical Network Unit (ONU), and each port of the plurality of ports has a respective enforced maximum upstream bandwidth. For example, the maximum upstream bandwidth may be enforced by a Dynamic Bandwidth Allocation (DBA) algorithm. The OLT further includes an uplink port through which data received from each of the plurality of ports are transmitted. In one embodiment, if there is congestion of the data at the uplink port, then the enforced maximum upstream bandwidth for at least one port of the plurality of ports is modified.Type: ApplicationFiled: August 11, 2011Publication date: February 14, 2013Applicant: CORTINA SYSTEMS, INC.Inventors: Abhimanyu Das, Eugene Lee, Deyi Dong, Dongsheng Zhang
-
Publication number: 20120288279Abstract: There are disclosed techniques for power control in an Optical Network Unit (ONU) of a Passive Optical Network (PON). In one embodiment, the supply of power to an optical transmitter is controlled in accordance with information defining a plurality of transmission windows during which data can be transmitted from the ONU, in order to achieve the following: (1) to provide power to the optical transmitter beginning at a predetermined time in advance of a transmission window to ensure a laser in the optical transmitter is ready to begin transmitting the data at the start of the transmission window; and (2) to refrain from providing full power to the optical transmitter between transmission windows when the duration of time between the transmission windows is greater than a predetermined length.Type: ApplicationFiled: May 12, 2011Publication date: November 15, 2012Applicant: CORTINA SYSTEMS, INC.Inventors: Dongsheng ZHANG, Eugene W. LEE
-
Patent number: 8256658Abstract: A wire bonding apparatus, comprising a bonding tool mounted on a bondhead body which is in turn mounted on a positioning table, is provided for bonding electronic devices. The positioning table has first and second motors coupled to it that are operative to drive the bondhead body to positions along respective first and second orthogonal axes. The bondhead body is connected to the positioning table through a pivot such that the bondhead body is rotatable relative to the positioning table about a third axis which is substantially orthogonal to the first and second axes. Further, a third motor drives the bondhead body to rotate about the third axis.Type: GrantFiled: August 16, 2007Date of Patent: September 4, 2012Assignee: ASM Technology Singapore Pte LtdInventors: Gang Ou, Ajit Gaunekar, Dongsheng Zhang, Ka Shing Kenny Kwan
-
Patent number: 8251011Abstract: An apparatus, which performs a plasma process on a target substrate by using plasma, includes first and second electrodes in a process chamber to oppose each other. An RF field, which turns a process gas into plasma by excitation, is formed between the first and second electrodes. An RF power supply, which supplies RF power, is connected to the first or second electrode through a matching circuit. The matching circuit automatically performs input impedance matching relative to the RF power. A variable impedance setting section is connected to a predetermined member, which is electrically coupled with the plasma, through an interconnection. The impedance setting section sets a backward-direction impedance against an RF component input to the predetermined member from the plasma. A controller supplies a control signal concerning a preset value of the backward-direction impedance to the impedance setting section.Type: GrantFiled: May 31, 2007Date of Patent: August 28, 2012Assignee: Tokyo Electron LimitedInventors: Yohei Yamazawa, Manabu Iwata, Chishio Koshimizu, Fumihiko Higuchi, Akitaka Shimizu, Asao Yamashita, Nobuhiro Iwama, Tsutomu Higashiura, DongSheng Zhang, Michiko Nakaya, Norikazu Murakami