Patents by Inventor Nelson Xu

Nelson Xu 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).

  • Patent number: 11131919
    Abstract: A method of removing layers of an extreme ultraviolet (EUV) pattern stack is provided. The method includes forming one or more resist templates on an upper hardmask layer. The method further includes exposing portions of the surface of the upper hardmask layer to a dry etch process to produce modified and activated surfaces. The method further includes etching the modified and activated surfaces to expose an underlying organic planarization layer.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: September 28, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yongan Xu, Zhenxing Bi, Yann Mignot, Nelson Felix, Ekmini A. De Silva
  • Patent number: 11110692
    Abstract: In some examples, a braze material includes a first set of particles, a second set of particles, and a polymeric binder. The first set of particles includes a braze powder, where the braze powder comprises an Si-containing alloy. The first set of particles defines an average or median particle diameter between about 1 ?m and about 40 ?m. The second set of particles includes at least one of SiC or a transition metal carbide, where the second set of particles has a multimodal particle size distribution.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 7, 2021
    Assignee: Rolls-Royce Corporation
    Inventors: Scott Nelson, Raymond Ruiwen Xu, Sean E. Landwehr, Daniel Kent Vetters, Samantha Tatar
  • Publication number: 20210268584
    Abstract: In some examples, a method for forming a ballistic armor article, the method including forming a preform article by depositing a filament via a filament delivery device, wherein the filament includes a sacrificial binder and a powder; removing the binder from the preform article; and sintering the preform article to form the ballistic armor article, wherein the ballistic armor article is configured to absorb energy from an external projectile that impacts the ballistic armor article, and wherein the ballistic armor article is configured to prevent the projectile from penetrating through the ballistic armor article.
    Type: Application
    Filed: November 13, 2020
    Publication date: September 2, 2021
    Inventors: Quinlan Yee Shuck, Scott Nelson, Raymond Ruiwen Xu, Brandon David Ribic, Matthew R. Gold
  • Patent number: 11061670
    Abstract: A Flash memory controller for a system having first and second microcontrollers configured to perform first and second functions, and further having a Flash memory medium shared by the two microcontrollers, includes first and second execute-in-place cache controllers respectively configured to cache program code retrieved from the Flash memory for execution by the respective microcontrollers. A cache-miss arbiter controls access by the microcontrollers to the Flash memory on occurrence of a cache miss in one of the cache controllers. The arbiter may allow aborting of a first fetching operation on behalf of one of the microcontrollers upon receipt of a fetch request from the other microcontroller if the first fetching operation has retrieved a desired data unit and a threshold amount of data. The Flash memory controller may also include a decryption engine configured to decrypt encrypted program code. The decryption mode is determined from address ranges.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: July 13, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Ying Yang, Ken Yeung, Nelson Xu, Tung-hao Huang
  • Publication number: 20200285465
    Abstract: A Flash memory controller for a system having first and second microcontrollers configured to perform first and second functions, and further having a Flash memory medium shared by the two microcontrollers, includes first and second execute-in-place cache controllers respectively configured to cache program code retrieved from the Flash memory for execution by the respective microcontrollers. A cache-miss arbiter controls access by the microcontrollers to the Flash memory on occurrence of a cache miss in one of the cache controllers. The arbiter may allow aborting of a first fetching operation on behalf of one of the microcontrollers upon receipt of a fetch request from the other microcontroller if the first fetching operation has retrieved a desired data unit and a threshold amount of data. The Flash memory controller may also include a decryption engine configured to decrypt encrypted program code. The decryption mode is determined from address ranges.
    Type: Application
    Filed: March 4, 2020
    Publication date: September 10, 2020
    Inventors: Ying Yang, Ken Yeung, Nelson Xu, Tung-hao Huang
  • Patent number: 10003373
    Abstract: A network device including first, second and third transceiver modules, which transmit or receive first, second and third data signals. A control module generates a mask signal based on a parameter of the first, second or third transceiver modules. The mask signal includes a direction bit and a first channel that identifies a first frequency. The direction bit indicates a range of frequencies. Transmission on the first frequency and some of the range of frequencies causes desensitization of the second data signal. A hopping module, based on a clock signal, selects a second channel for the third data signal. An output module, based on the mask signal and the second channel, generates an overlap signal indicating whether potential desensitization of the first or third data signal exists. An arbitration module, based on the overlap signal, provides the first or third transceiver module access to a first or second switch module.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 19, 2018
    Assignee: Marvell International Ltd.
    Inventors: Josselin de la Broise, Raja Banerjea, Hao Zhang, Nelson Xu, Ken Yeung
  • Patent number: 9402279
    Abstract: Systems and techniques relating to wireless communications are described. A described technique includes performing, at a wireless communication device, an arbitration among multiple different wireless radio technologies, which collectively use two or more radio resources of the wireless communication device, to produce an arbitration result; and operating the two or more radio resources in accordance with the arbitration result. Performing the arbitration can include performing a first level arbitration between a request associated with a first technology of the multiple different wireless radio technologies and a request associated with a second technology of the multiple different wireless radio technologies to produce a first level result; and performing a second level arbitration to produce a second level result when indicated by the first level result. The arbitration result can be based on the first level result and the second level result, if any.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 26, 2016
    Assignee: Marvell International Ltd.
    Inventors: Hao Zhang, Nelson Xu, Yiqing Shen, Ken Yeung
  • Patent number: 9155127
    Abstract: A coexistence system including first and second transceiver modules and an arbitration module. The first transceiver module generates a first request signal and operates according to a first wireless communication standard. The first request signal requests transmission or reception for the first transceiver module. The second transceiver module generates a second request signal and an overlap signal and operates according to a second wireless communication standard. The second request signal requests permission for the second transceiver module to transmit or receive. The overlap signal indicates whether desensitization is expected of a frequency of the first transceiver module or a frequency of the second transceiver module. The arbitration module (i) based on the overlap signal, arbitrates the first and second request signals, and (ii) based on the arbitration of the first and second request signals, selectively connect antennas to the first and second transceiver modules in one multiple configurations.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 6, 2015
    Assignee: Marvell International Ltd.
    Inventors: Josselin de la Broise, Raja Banerjea, Hao Zhang, Nelson Xu, Ken Yeung
  • Patent number: 8059707
    Abstract: A decoding unit for decoding a modulated signal includes a summing unit having i) a first input, ii) a second input, and iii) an output. The summing unit is configured to i) receive the modulated signal at the first input, ii) receive a feedback signal at the second input, and iii) output a first waveform based on the modulated signal and the feedback signal. A demodulation unit has a first demodulation pathway and a second demodulation pathway. The demodulation unit is configured to i) select between the first demodulation pathway and the second demodulation pathway, ii) receive and demodulate the modulated signal with the first demodulation pathway, and iii) receive and demodulate the first waveform with the second demodulation pathway. The remodulation unit is configured to selectively i) output a first complex waveform based on the modulated signal, and ii) output a subsymbol waveform of the first waveform.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: November 15, 2011
    Assignee: Marvell International Ltd.
    Inventors: Yungping Hsu, Nelson Xu, Ricky Cheung
  • Patent number: 7746925
    Abstract: A feedback equalizer includes a summing unit having an output and first input for receiving a modulated signal, which includes a symbol defined by a first number of chips. A subsymbol processor is coupled to the output of the summing unit. The symbol processor is capable of generating a subsymbol waveform upon receipt of a second number of chips of the symbol. The second number is less than the first number. A feedback filter is coupled to a second input of the summing unit and the symbol processing unit to selectively filter the subsymbol waveform from the modulated signal.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: June 29, 2010
    Assignee: Marvell International Ltd.
    Inventors: Yungping Hsu, Nelson Xu, Ricky Cheung
  • Patent number: 7606296
    Abstract: A decoder comprises an equalizer that receives a modulated signal comprising a plurality of symbols including a first symbol defined by a first number of chips. A subsymbol processor that generates a subsymbol waveform after receiving a second number of chips of the first symbol and before at least one of receiving, decoding, and deciding the first number of chips of the first symbol. The second number is less than the first number, and wherein the equalizer equalizes the modulated signal using the subsymbol waveform.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: October 20, 2009
    Assignee: Marvell International Ltd.
    Inventors: Yungping Hsu, Nelson Xu, Ricky Cheung
  • Patent number: 7263119
    Abstract: Techniques and instrumentalities to improve ISI and ICI cancellation in reception of modulated symbols by selectively decoding subsymbols of such modulated symbol before they can be completely decided or perceived as well as use of decoded symbol/subsymbol information in the feedback equalization process are disclosed. In particular, a decoder and corresponding method are disclosed which includes a feedback equalizer capable of receiving a modulated signal including a symbol defined by a first number of chips, along with a subsymbol processor to generate a subsymbol waveform upon receipt of a second number, less than the first number, of chips of such symbol and provide the subsymbol waveform to the feedback equalizer in order to equalize the modulated signal using the subsymbol waveform.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: August 28, 2007
    Assignee: Marvell International Ltd.
    Inventors: Yungping Hsu, Nelson Xu, Ricky Cheung