Patents by Inventor Peter Tsang

Peter Tsang 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: 20230360385
    Abstract: A computer-implemented method and a system for object identification and/or classification. The computer-implemented method includes receiving digital hologram data of a digital hologram of an object. The digital hologram data comprises phase information and magnitude information. The computer-implemented method further includes processing the digital hologram data based on a neural-network-based ensemble model to identify and/or classify the object.
    Type: Application
    Filed: February 17, 2023
    Publication date: November 9, 2023
    Inventors: Ho Sang Lam, Wai Ming Peter Tsang
  • Patent number: 10663923
    Abstract: System and methods for efficiently generating a high quality patterned-phase-only hologram that can be displayed on a single device. A digital image of a holographed subject is measured as a distribution of the intensity of pixels in the image, or as an intensity image, and uniformly partitioned into a plurality of non-overlapping image blocks. A phase mask is applied to each pixel in each image block and assigned a value in the range of [0,2?). The pixels are modulated with a phase value corresponding to the value applied by the phase mask, creating a modified intensity image. A complex hologram is generated from the modified intensity image. The complex hologram is generated utilizing a fast hologram generation process and then converted into a patterned-phase-only hologram. A short sequence of the patterned-phase holograms can be displayed to enhance the visual quality of the displayed holographic images.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 26, 2020
    Assignee: City University of Hong Kong
    Inventors: Wai Ming Peter Tsang, Yuk Tak Chow
  • Patent number: 10317674
    Abstract: The present disclosure describes Augmented Reality (AR) methods and systems allowing one or more user to observe a virtual image (e.g., computer generated image) overlaid on a physical scene (e.g., actual real life surroundings). Embodiments herein allow components of the AR methods and systems to be decoupled from each other, such that a user is able to view a virtual image overlaid on a physical scene while simply wearing thin, lightweight holographic spectacles.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 11, 2019
    Assignee: City University of Hong Kong
    Inventor: Wai Ming Peter Tsang
  • Publication number: 20180217375
    Abstract: The present disclosure describes Augmented Reality (AR) methods and systems allowing one or more user to observe a virtual image (e.g., computer generated image) overlaid on a physical scene (e.g., actual real life surroundings). Embodiments herein allow components of the AR methods and systems to be decoupled from each other, such that a user is able to view a virtual image overlaid on a physical scene while simply wearing thin, lightweight holographic spectacles.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 2, 2018
    Inventor: Wai Ming Peter Tsang
  • Publication number: 20180074458
    Abstract: System and methods for efficiently generating a high quality patterned-phase-only hologram that can be displayed on a single device are disclosed. A digital image of a holographed subject is measured as a distribution of the intensity of pixels in the image, or as an intensity image, and uniformly partitioned into a plurality of non-overlapping image blocks. A phase mask is applied to each pixel in each image block and assigned a value in the range of [0,2?). The pixels are modulated with a phase value corresponding to the value applied by the phase mask, creating a modified intensity image. A complex hologram is generated from the modified intensity image. The complex hologram is generated utilizing a fast hologram generation process and then converted into a patterned-phase-only hologram. A short sequence of the patterned-phase holograms can be displayed to enhance the visual quality of the displayed holographic images.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 15, 2018
    Inventors: Wai Ming Peter Tsang, Yuk Tak Chow
  • Patent number: 9890244
    Abstract: Embodiments in accordance with the present invention provide sacrifical polymer compositions and methods for fabricating electronic devices using such sacrifical polymer compositions where such methods include (1) providing a tacky sacrifical polymer composition that holds components in a desired alignment to one another, (2) providing solder fluxing for effecting electrical coupling; and (3) thermal decomposition or depolymerization of the sacrificial polymer composition to provide essentially residue free surfaces.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: February 13, 2018
    Assignee: SUMITOMO BAKELITE CO., LTD.
    Inventors: W. C. Peter Tsang, Andrew Bell
  • Patent number: 9765200
    Abstract: Embodiments in accordance with the present invention encompass polymer compositions that are useful in the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions providing for both holding the microelectronic components at desired positions on a substrate, providing fluxing for the solder bonding of such components to the substrate and remaining in place as an underfill for such components.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 19, 2017
    Assignee: PROMERUS, LLC
    Inventors: Christopher Apanius, Andrew Bell, Leah Langsdorf, W. C. Peter Tsang
  • Patent number: 9757818
    Abstract: A thermally decomposable polymer composition comprising a polyester of a dicarboxylic acid and a tertiary cyclohexanediols of Formulae V and VI are disclosed, which are useful in the forming of microelectronic assemblies: a representative example of a dicarboxylic acid is an oxalic acid and representative example of thermally decomposable polyester is the polyester of the formula: wherein m is at least about 100.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: September 12, 2017
    Assignee: PROMERUS, LLC
    Inventors: W. C. Peter Tsang, Andrew Bell, Hongshi Zhen, Keitaro Seto
  • Publication number: 20170036308
    Abstract: A thermally decomposable polymer composition comprising a polyester of a dicarboxylic acid and a difunctional tertiary alcohol are disclosed, which are useful in the forming of microelectronic assemblies. A representative example of a composition comprises a thermally decomposable polyester of the formula: wherein m is at least about 100.
    Type: Application
    Filed: October 20, 2016
    Publication date: February 9, 2017
    Applicant: PROMERUS, LLC
    Inventors: W. C. PETER TSANG, ANDREW BELL, HONGSHI ZHEN, KEITARO SETO
  • Patent number: 9527957
    Abstract: Embodiments in accordance with the present invention relate generally to polycarbonate polymers having repeat units derived from polycyclic-epoxide monomers and methods of using such polymers and compositions containing them, and more specifically to polymers and compositions of polycarbonates that encompass repeat units derived from norbornane and tetracyclododecane, and methods of using such compositions.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 27, 2016
    Assignee: PROMERUS, LLC
    Inventors: W. C. Peter Tsang, Andrew Bell, Keitaro Seto
  • Patent number: 9505948
    Abstract: A thermally decomposable polymer composition comprising a polyester containing repeating units of an ester of diglycolic acid and difunctional tertiary alcohol are disclosed, which are useful in the forming of microelectronic assemblies. A representative example of a composition comprises a thermally decomposable polymer of the formula: wherein n is at least about 20, which provides both tackiness and solder fluxing, among other benefits.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 29, 2016
    Assignee: PROMERUS, LLC
    Inventors: W. C. Peter Tsang, Andrew Bell, Hongshi Zhen, Keitaro Seto
  • Patent number: 9305398
    Abstract: A trajectory is drawn on a digital canvas with a pointing device, wherein the trajectory comprises a plurality of spaced points, and each spaced point has a plurality of characteristics, including a geometric profile, a depth, and a color if a color trajectory or an intensity if a monochromatic trajectory. One or more of the plurality of characteristics is adjusted by manually controlling a speed of the drawing, and a faster drawing speed results in spacing between two successive points that is greater than that resulting from a slower speed. A line is generated by interpolating the space between the points. A picture is created with a number of trajectories and/or lines. A three-dimensional image may be created from the picture by creating, then integrating a set of multi-view images from the picture. The picture in progress and/or as completed may be displayed, for example, on a three-dimensional display.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: April 5, 2016
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventor: Wai-Ming Peter Tsang
  • Publication number: 20150353679
    Abstract: Embodiments in accordance with the present invention relate generally to polycarbonate polymers having repeat units derived from polycyclic-epoxide monomers and methods of using such polymers and compositions containing them, and more specifically to polymers and compositions of polycarbonates that encompass repeat units derived from norbornane and tetracyclododecane, and methods of using such compositions.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 10, 2015
    Applicant: PROMERUS, LLC
    Inventors: W. C. PETER TSANG, ANDREW BELL, KEITARO SETO
  • Publication number: 20150337081
    Abstract: Embodiments in accordance with the present invention provide sacrifical polymer compositions and methods for fabricating electronic devices using such sacrifical polymer compositions where such methods include (1) providing a tacky sacrifical polymer composition that holds components in a desired alignment to one another, (2) providing solder fluxing for effecting electrical coupling; and (3) thermal decomposition or depolymerization of the sacrificial polymer composition to provide essentially residue free surfaces.
    Type: Application
    Filed: July 14, 2015
    Publication date: November 26, 2015
    Applicant: PROMERUS, LLC
    Inventors: W. C. PETER TSANG, ANDREW BELL
  • Publication number: 20150299509
    Abstract: Embodiments in accordance with the present invention relate generally to polymer compositions useful in the forming of microelectronic assemblies, and more specifically to such compositions that encompass a thermally decomposable polymer and that provide both tackiness and solder fluxing.
    Type: Application
    Filed: December 12, 2013
    Publication date: October 22, 2015
    Applicant: PROMERUS, LLC
    Inventors: W. C. PETER TSANG, ANDREW BELL, HONGSHI ZHEN, KEITARO SETO
  • Patent number: 9115300
    Abstract: Embodiments in accordance with the present invention provide sacrifical polymer compositions and methods for fabricating electronic devices using such sacrifical polymer compositions where such methods include (1) providing a tacky sacrifical polymer composition that holds components in a desired alignment to one another, (2) providing solder fluxing for effecting electrical coupling; and (3) thermal decomposition or depolymerization of the sacrificial polymer composition to provide essentially residue free surfaces.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 25, 2015
    Inventors: W. C. Peter Tsang, Andrew Bell
  • Patent number: 8729166
    Abstract: Embodiments in accordance with the present invention encompass polymer compositions that act as both a tack agent and a fluxing agent for the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions embodiments encompass a sacrificial polymer, a carrier solvent, a thermal acid generator and, optionally, formic acid.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 20, 2014
    Assignee: Promerus, LLC
    Inventors: Christopher Apanius, Andrew Bell, Leah Langsdorf, W. C. Peter Tsang
  • Patent number: 8729215
    Abstract: Embodiments according to the present invention relate to sacrificial polymer compositions that include polycarbonate polymers having repeat units derived from stereospecific polycyclic 2,3-diol monomers. The sacrificial polymer compositions also include an acid generator that is selected from at least one photoacid generator and/or at least one thermal acid generator. In addition, embodiments according to the present invention relate to a method of forming a structure that includes a three-dimensional space interposed between a substrate and an overcoat layer, and a method of temporarily bonding first and second substrates together, which make use of the polycarbonate polymers.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 20, 2014
    Assignee: Promerus, LLC
    Inventors: Andrew Bell, Robert A. Shick, Leah Langsdorf, Keitaro Seto, W. C. Peter Tsang
  • Publication number: 20140024799
    Abstract: Embodiments according to the present invention relate to sacrificial polymer compositions that include polycarbonate polymers having repeat units derived from stereospecific polycyclic 2,3-diol monomers. The sacrificial polymer compositions also include an acid generator that is selected from at least one photoacid generator and/or at least one thermal acid generator. In addition, embodiments according to the present invention relate to a method of forming a structure that includes a three-dimensional space interposed between a substrate and an overcoat layer, and a method of temporarily bonding first and second substrates together, which make use of the polycarbonate polymers.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: Promerus, LLC
    Inventors: Andrew Bell, Robert A. Shick, Leah Langsdorf, Keitaro Seto, W. C. Peter Tsang
  • Publication number: 20140024750
    Abstract: Embodiments in accordance with the present invention encompass polymer compositions that act as both a tack agent and a fluxing agent for the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions embodiments encompass a sacrificial polymer, a carrier solvent, a thermal acid generator and, optionally, formic acid.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: Promerus, LLC
    Inventors: Christopher Apanius, Andrew Bell, Leah Langsdorf, W. C. Peter Tsang