Patents by Inventor Zhihong Yang

Zhihong Yang 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: 20240330055
    Abstract: A memory management method for a device, a memory management device, and a computing system.
    Type: Application
    Filed: September 15, 2022
    Publication date: October 3, 2024
    Inventors: Guo AI, Zuoxing YANG, Ruming FANG, Zhihong XIANG
  • Publication number: 20240036363
    Abstract: A transfer apparatus includes a transfer layer formed of a thermally switchable material that undergoes a phase change when heated. A first side of the transfer layer is placed in contact with a chiplet during a transfer operation. An optical absorber material is thermally coupled the transfer layer. An optical energy source is operable to apply optical energy to the optical absorber material to selectively heat a region of the transfer layer that corresponds to a location of the chiplet. The region holds the chiplet when the optical energy is removed during the transfer operation. The region is subsequently heated during the transfer operation to release the chiplet. The transfer layer can be reused for repeated transfer operations.
    Type: Application
    Filed: July 28, 2022
    Publication date: February 1, 2024
    Inventors: Christopher L. Chua, Ching-Fuh Lin, Zhihong Yang
  • Publication number: 20240038574
    Abstract: A transfer system includes first and second optical energy sources operable to provide a respective first and second optical energy at respective first and second wavelengths. A chiplet has a bonding feature configured to interface with a corresponding bonding feature of a target substrate. At least one of the bonding features absorb at the first wavelength such that applying the first optical energy bonds the chiplet to the target substrate or removes a bond between the chiplet and the target substrate. The system includes a transfer layer formed of a thermally switchable material that undergoes a phase change when heated. An optical absorber absorbs at the second wavelength such that applying the second optical energy heats a region of the transfer layer at a location of the chiplet when removing the chiplets from a source substrate during the transfer operation.
    Type: Application
    Filed: July 28, 2022
    Publication date: February 1, 2024
    Inventors: Christopher L. Chua, Ching-Fuh Lin, Zhihong Yang
  • Publication number: 20240036364
    Abstract: A transfer system includes a transfer layer formed of a thermally switchable material that undergoes a phase change when heated. A side of the transfer layer is placed in contact with an outward-facing side of a chiplet during a transfer operation. An optical absorber material is located on at least one of the outward facing side of the chiplet or an inward facing side of the chiplet. An optical energy source is operable to apply optical energy to the optical absorber material through the transfer layer to selectively heat a region of the transfer layer that corresponds to a location of the chiplet. The region holds the chiplet when the optical energy is removed during the transfer operation. The region is subsequently heated during the transfer operation to release the chiplet.
    Type: Application
    Filed: July 28, 2022
    Publication date: February 1, 2024
    Inventors: Christopher L. Chua, Ching-Fuh Lin, Zhihong Yang, Max Batres
  • Patent number: 11827037
    Abstract: A laser imager for a printing system, comprising a plurality of independently addressable surface emitting lasers arranged in a linear array on a common substrate chip and including a common cathode and a dedicated control channel associated with an address trace line for each laser of the plurality of independently addressable surface emitting lasers, and optical elements arranged in a linear lens array configured to capture and focus light from the plurality of independently addressable surface emitting lasers onto a imaging member, wherein the plurality of independently addressable surface emitting lasers arranged in a linear array and the optical elements arranged in a linear lens array operate together to image the imaging member.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: November 28, 2023
    Assignee: Xerox Corporation
    Inventors: Joerg Martini, Christopher Chua, Zhihong Yang, Mark Teepe, Patrick Y. Maeda, Sourobh Raychaudhuri, Elif Karatay, Noble M. Johnson, David K. Biegelsen, Joseph Lee
  • Publication number: 20230351373
    Abstract: The field of this invention is a system and method for digital storage, digital exchange of personal and business valuables from any device, including but not limited to computer, mobile phone, tablet, the cloud or single standalone hardware, using a global unique digital ID, with specific designed app and chip to store and exchange directly in person or remotely.
    Type: Application
    Filed: February 22, 2022
    Publication date: November 2, 2023
    Inventor: Zhihong Yang
  • Publication number: 20230056905
    Abstract: A semiconductor surface-emitting laser array can be provided with a group of independently addressable light-emitting pixels arranged in at least two rows and in a linear array on a common substrate chip and including a common cathode and a dedicated channel associated with an address trace line for each pixel. An aggregate linear pitch can be achieved between pixels of the at least two rows along the linear array in a cross process direction that is less than the size of a pixel. The semiconductor laser array can include more than one common substrate chip tiled and stitched together in a staggered arrangement to provide an at least 11-inch wide, 1200pdi imager with timing delays associated with each of the more than one common substrate chip in the staggered arrangement.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 23, 2023
    Inventors: Christopher Chua, Joerg Martini, Zhihong Yang, Noble M. Johnson, Patrick Y. Maeda, Peter Kiesel
  • Publication number: 20230055149
    Abstract: A laser imager for a printing system, comprising a plurality of independently addressable surface emitting lasers arranged in a linear array on a common substrate chip and including a common cathode and a dedicated control channel associated with an address trace line for each laser of the plurality of independently addressable surface emitting lasers, and optical elements arranged in a linear lens array configured to capture and focus light from the plurality of independently addressable surface emitting lasers onto a imaging member, wherein the plurality of independently addressable surface emitting lasers arranged in a linear array and the optical elements arranged in a linear lens array operate together to image the imaging member.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 23, 2023
    Inventors: Joerg Martini, Christopher Chua, Zhihong Yang, Mark Teepe, Patrick Y. Maeda, Sourobh Raychaudhuri, Elif Karatay, Noble M. Johnson, David K. Biegelsen, Joseph Lee
  • Publication number: 20230055986
    Abstract: Focusing optics can include optical elements disposed and bonded in a linear arrangement (linear array) in at least two rows. A transparent bonding agent can secure alignment of the at least two rows of the optical elements. Scattering elements can also be disposed in the transparent polymer to cause light diffusion. Diffused or un-diffused light from a semiconductor laser array can then be caused to pass through the optical element and illuminate a target substrate such as an imaging member in a printing system.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 23, 2023
    Inventors: Joerg Martini, Zhihong Yang, Patrick Y. Maeda, Yu Wang
  • Publication number: 20220284327
    Abstract: This application discloses a resource pushing method performed by a computer device. The method includes: obtaining a target recommendation model and a preference feature and a candidate resource set corresponding to a target object, the preference feature including at least a channel preference feature and a content preference feature; obtaining at least one target resource from the candidate resource set based on the target recommendation model and the preference feature; and pushing the at least one target resource to the target object. Such a resource pushing process integrates preferences of the target object in different dimensions, so that the target resource pushed to the target object not only conforms to channel preferences of the target object, but also conforms to content references of the target object, which is beneficial to improving the resource pushing effect, and further increasing the click-through rates (CTRs) of the pushed resources.
    Type: Application
    Filed: April 20, 2022
    Publication date: September 8, 2022
    Inventors: Shaoliang ZHANG, Rui Wang, Ruobing Xie, Zhihong Yang, Feng Xia, Leyu Lin
  • Patent number: 10249786
    Abstract: A method of thinning a bulk aluminum nitride substrate includes providing a bulk aluminum nitride (AlN) substrate with at least one epitaxially grown group-III-nitride layer on a first side of the substrate, applying a slurry having a high pH to a second side of the substrate opposite the first side, chemical mechanically polishing the second side of the substrate using the slurry to remove at least a portion of the substrate, resulting in a thinned layer with a thickness less than 50 microns, and bonding the epitaxial layer to a non-native substrate. A device has at least one active zone in a layer of epitaxial Group-III-nitride material, the epitaxial Group-III-nitride layer having a defect density of less than or equal to 108/cm2.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 2, 2019
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Max Batres, Zhihong Yang, Thomas Wunderer
  • Patent number: 10164146
    Abstract: A light emitting device includes a p-side heterostructure having a short period superlattice (SPSL) formed of alternating layers of AlxhighGa1-xhighN doped with a p-type dopant and AlxlowGa1-xlowN doped with the p-type dopant, where xlow?xhigh?0.9. Each layer of the SPSL has a thickness of less than or equal to about six bi-layers of AlGaN.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: December 25, 2018
    Assignee: Palo Alto Research Center Incorporated
    Inventors: John E. Northrup, Bowen Cheng, Christopher L. Chua, Thomas Wunderer, Noble M. Johnson, Zhihong Yang
  • Publication number: 20180331252
    Abstract: A method of thinning a bulk aluminum nitride substrate includes providing a bulk aluminum nitride (AlN) substrate with at least one epitaxially grown group-III-nitride layer on a first side of the substrate, applying a slurry having a high pH to a second side of the substrate opposite the first side, chemical mechanically polishing the second side of the substrate using the slurry to remove at least a portion of the substrate, resulting in a thinned layer with a thickness less than 50 microns, and bonding the epitaxial layer to a non-native substrate. A device has at least one active zone in a layer of epitaxial Group-III-nitride material, the epitaxial Group-III-nitride layer having a defect density of less than or equal to 108/cm2.
    Type: Application
    Filed: November 29, 2016
    Publication date: November 15, 2018
    Inventors: MAX BATRES, ZHIHONG YANG, THOMAS WUNDERER
  • Publication number: 20160336481
    Abstract: A light emitting device includes a p-side heterostructure having a short period superlattice (SPSL) formed of alternating layers of AlxhighGa1-xhighN doped with a p-type dopant and AlxlowGa1-xlowN doped with the p-type dopant, where xlow?xhigh?0.9. Each layer of the SPSL has a thickness of less than or equal to about six bi-layers of AlGaN.
    Type: Application
    Filed: July 13, 2016
    Publication date: November 17, 2016
    Inventors: John E. Northrup, Bowen Cheng, Christopher L. Chua, Thomas Wunderer, Noble M. Johnson, Zhihong Yang
  • Patent number: 9444224
    Abstract: An ultraviolet laser diode having multiple portions in the n-cladding layer is described herein. The laser diode comprises a p-cladding layer, an n-cladding layer, a waveguide, and a light-emitting region. The n-cladding layer includes at least a first portion and a second portion. The first portion maintains material quality of the laser diode, while the second portion pulls the optical mode from the p-cladding layer toward the active region. The first portion may have a higher aluminum composition than the second portion. The waveguide is coupled to the n-cladding layer and the light-emitting region is coupled to the waveguide. The light-emitting region is located between the n-cladding layer and the p-cladding layer. Other embodiments are also described.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: September 13, 2016
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Christopher L. Chua, Thomas Wunderer, Zhihong Yang
  • Patent number: 9401452
    Abstract: A light emitting device includes a p-side heterostructure having a short period superlattice (SPSL) formed of alternating layers of AlxhighGa1-xhighN doped with a p-type dopant and AlxlowGa1-xlowN doped with the p-type dopant, where xlow?xhigh?0.9. Each layer of the SPSL has a thickness of less than or equal to about six bi-layers of AlGaN.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 26, 2016
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: John E. Northrup, Bowen Cheng, Christopher L. Chua, Thomas Wunderer, Noble M. Johnson, Zhihong Yang
  • Publication number: 20160164260
    Abstract: An ultraviolet laser diode having multiple portions in the n-cladding layer is described herein. The laser diode comprises a p-cladding layer, an n-cladding layer, a waveguide, and a light-emitting region. The n-cladding layer includes at least a first portion and a second portion. The first portion maintains material quality of the laser diode, while the second portion pulls the optical mode from the p-cladding layer toward the active region. The first portion may have a higher aluminum composition than the second portion. The waveguide is coupled to the n-cladding layer and the light-emitting region is coupled to the waveguide. The light-emitting region is located between the n-cladding layer and the p-cladding layer. Other embodiments are also described.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Inventors: Christopher L. Chua, Thomas Wunderer, Zhihong Yang
  • Publication number: 20160014177
    Abstract: This invention discloses a CIM/E (Common Information Model) and CIM/G-based graphics-model-integrated apparatus and method for distribution network. The apparatus comprises an operating system for distribution systems, which is used by distribution network dispatcher and a debugging system for maintaining graphics and models. The operating system communicates with the debugging system via TCP/IP protocol, using the CIM/E Language to describe full models and incremental models of distribution network, and using the CIM/G Language to describe graphics of distribution network. This invention manages the graphics and models through the remote call, graphics-model-operation and graphics-model-rollback, achieves the management of the graphics and models of past, present and future.
    Type: Application
    Filed: July 10, 2015
    Publication date: January 14, 2016
    Inventors: Bing Han, Zhichang Zhang, Jiaqing Zhao, Hongwei Du, Yi Wu, Zhihong Yang, Hongen Ding, Chongpu Xia, Kejun Qian, Yanghao Zhou, Haibing Zhu, Fan Liu, Yi Liu
  • Patent number: 9219189
    Abstract: A light emitting device includes a p-side heterostructure, an n-side heterostructure, an active region disposed between the p-side heterostructure and the n-side heterostructure. An electron blocking layer (EBL) disposed between the p-side heterostructure and the active region comprises an aluminum containing group-III-nitride alloy. An aluminum composition of the EBL decreases as a function of distance along a [0001] direction from the active region towards the p-side heterostructure over a majority of the thickness of the EBL.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 22, 2015
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: John E. Northrup, Bowen Cheng, Christopher L. Chua, Thomas Wunderer, Noble M. Johnson, Zhihong Yang, Suk Choi
  • Publication number: 20150280056
    Abstract: A light emitting device includes a p-side heterostructure, an n-side heterostructure, an active region disposed between the p-side heterostructure and the n-side heterostructure. An electron blocking layer (EBL) disposed between the p-side heterostructure and the active region comprises an aluminum containing group-III-nitride alloy. An aluminum composition of the EBL decreases as a function of distance along a [0001] direction from the active region towards the p-side heterostructure over a majority of the thickness of the EBL.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 1, 2015
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: John E. Northrup, Bowen Cheng, Christopher L. Chua, Thomas Wunderer, Noble M. Johnson, Zhihong Yang, Suk Choi