Patents by Inventor Chung-a Han

Chung-a Han 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: 20250227297
    Abstract: A three-dimensional data encoding method includes: obtaining geometry information which includes first three-dimensional positions on a measurement target, and is generated by a measurer that radially emits an electromagnetic wave in different directions and obtains a reflected wave which is the electromagnetic wave that is reflected by the measurement target; generating a two-dimensional image including first pixels corresponding to the directions, based on the geometry information; and encoding the two-dimensional image to generate a bitstream. Each of the first pixels has a pixel value indicating a first three-dimensional position or attribute information of a three-dimensional point which is included in a three-dimensional point cloud and corresponds to a direction to which the first pixel corresponds among the directions.
    Type: Application
    Filed: March 25, 2025
    Publication date: July 10, 2025
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Pongsak LASANG, Chi WANG, Chung Dean HAN
  • Patent number: 12356007
    Abstract: A three-dimensional data encoding method includes: generating a bitstream by encoding subspaces included in a current space in which three-dimensional points are included. The bitstream includes encoded data respectively corresponding to the subspaces. In the generating of the bitstream, a list of information about the subspaces is stored in first control information included in the bitstream. The subspaces are respectively associated with identifiers assigned to the subspaces, and the first control information is common to the encoded data. Each of the identifiers assigned to the subspaces respectively corresponding to the encoded data is stored in a header of a corresponding one of the encoded data.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: July 8, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Chung Dean Han, Pongsak Lasang, Chi Wang, Noritaka Iguchi, Toshiyasu Sugio
  • Publication number: 20250220233
    Abstract: An encoding device includes memory and a circuit accessible to the memory. In operation, the circuit: encodes first vertex information, second vertex information, and third vertex information into a bitstream, the first vertex information indicating a position of a first vertex of a first triangle, the second vertex information indicating a position of a second vertex of the first triangle, and the third vertex information indicating a position of a third vertex of the first triangle; and encodes angle information into the bitstream, the angle information indicating one or more angles used for identifying a position of a fourth vertex of a second triangle by reference to the first triangle, the second triangle being a triangle that shares a common side with the first triangle and is on the same place as the first triangle.
    Type: Application
    Filed: March 20, 2025
    Publication date: July 3, 2025
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Takahiro NISHI, Chong Soon LIM, Zheng WU, Han Boon TEO, Keng Liang LOI, Chung Dean HAN, Farman DUMANOV
  • Publication number: 20250173909
    Abstract: A three-dimensional data encoding method includes: determining a first maximum bit count for encoded data obtained after encoding at least one of (i) a divisional data unit obtained when point cloud data indicating a three-dimensional point cloud is divided or (ii) a point cloud data unit of the point cloud data before the dividing; and generating a bitstream by encoding (i) items of divisional data obtained by dividing the point cloud data or (ii) the point cloud data before the dividing, to satisfy the first maximum bit count determined. The bitstream includes first bit count information indicating the first maximum bit count.
    Type: Application
    Filed: January 27, 2025
    Publication date: May 29, 2025
    Inventors: Chung Dean HAN, Pongsak LASANG, Pradit MITTRAPIYANURUK, Keng Liang LOI, Noritaka IGUCHI, Toshiyasu SUGIO
  • Patent number: 12315204
    Abstract: A three-dimensional data encoding method includes: calculating coefficient values from items of attribute information of three-dimensional points; quantizing the coefficient values to generate quantization values; and generating a bitstream including the quantization values. One or more items of attribute information are classified, for each of three-dimensional spaces, into one of groups, the three-dimensional spaces (i) being included in a plurality of three-dimensional spaces, and (ii) including, among the three-dimensional points, three-dimensional points including the one or more items of attribute information.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: May 27, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toshiyasu Sugio, Noritaka Iguchi, Chung Dean Han, Pongsak Lasang, Pradit Mittrapiyanuruk, Keng Liang Loi
  • Publication number: 20250148650
    Abstract: A three-dimensional data decoding method includes: obtaining three-dimensional space information including encoded three-dimensional points; calculating an angle formed by a line segment connecting a predetermined position in the three-dimensional space information and a first base point and a line segment connecting the first base point and a second base point different from the first base point; determining whether the angle calculated satisfies a predetermined condition; and decoding the encoded three-dimensional points included in the three-dimensional space information when the angle calculated is determined to satisfy the predetermined condition, and not decoding the encoded three-dimensional points included in the three-dimensional space information when the angle calculated is determined not to satisfy the predetermined condition.
    Type: Application
    Filed: January 8, 2025
    Publication date: May 8, 2025
    Inventors: Chung Dean HAN, Pongsak LASANG, Pradit MITTRAPIYANURUK, Keng Liang LOI, Noritaka IGUCHI, Toshiyasu SUGIO
  • Patent number: 12294740
    Abstract: A three-dimensional data encoding method includes: generating a first predicted value for an item of position information of a first three-dimensional point included in point cloud data, using an item of position information of a reference three-dimensional point included in the point cloud data and angle information; calculating a first difference value between the item of position information of the first three-dimensional point and the first predicted value; and generating a bitstream including the first difference value and the angle information.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: May 6, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toshiyasu Sugio, Noritaka Iguchi, Pongsak Lasang, Chung Dean Han, Keng Liang Loi, Pradit Mittrapiyanuruk
  • Patent number: 12289470
    Abstract: A three-dimensional data encoding method includes: obtaining geometry information which includes first three-dimensional positions on a measurement target, and is generated by a measurer that radially emits an electromagnetic wave in different directions and obtains a reflected wave which is the electromagnetic wave that is reflected by the measurement target; generating a two-dimensional image including first pixels corresponding to the directions, based on the geometry information; and encoding the two-dimensional image to generate a bitstream. Each of the first pixels has a pixel value indicating a first three-dimensional position or attribute information of a three-dimensional point which is included in a three-dimensional point cloud and corresponds to a direction to which the first pixel corresponds among the directions.
    Type: Grant
    Filed: December 20, 2023
    Date of Patent: April 29, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toshiyasu Sugio, Noritaka Iguchi, Pongsak Lasang, Chi Wang, Chung Dean Han
  • Publication number: 20250097462
    Abstract: A three-dimensional data encoding method includes: generating combined point cloud data by combining pieces of point cloud data; and generating a bitstream by encoding the combined point cloud data. The bitstream includes (i) first information indicating a maximum number of duplicated points that are included in each of the pieces of point cloud data and are three-dimensional points having same geometry information, and (ii) pieces of second information corresponding one-to-one with point indexes and each indicating which of the pieces of point cloud data three-dimensional points having a corresponding one of the point indexes belong to, the point indexes being indexes to which values a total number of which is equal to the maximum number are assigned, and being used for identifying duplicated points belonging to same point cloud data.
    Type: Application
    Filed: November 27, 2024
    Publication date: March 20, 2025
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Chung Dean HAN, Chi WANG, Pongsak LASANG
  • Publication number: 20250095214
    Abstract: An encoding device includes: memory; and a circuit. In operation, the circuit: when a first triangle satisfies a condition, performs a first process including a process of using the first triangle to derive a predicted value of a current vertex to be encoded of a second triangle; when the first triangle does not satisfy the condition, performs a second process including a process of using a third triangle different from the first triangle and the second triangle to derive the predicted value of the current vertex; and encodes the current vertex using the predicted value.
    Type: Application
    Filed: December 2, 2024
    Publication date: March 20, 2025
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Takahiro NISHI, Chong Soon LIM, Zheng WU, Han Boon TEO, Keng Liang LOI, Chung Dean HAN, Georges NADER, Farman DUMANOV
  • Patent number: 12249105
    Abstract: A three-dimensional data encoding method includes: encoding, for each of three-dimensional points included in point cloud data, geometry information and one or more items of attribute information to generate a bitstream. In the encoding, a normal vector of each of the three-dimensional points is encoded as an item of attribute information included in the one or more items of attribute information of the three-dimensional point.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: March 11, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Noritaka Iguchi, Toshiyasu Sugio, Chung Dean Han, Pongsak Lasang, Pradit Mittrapiyanuruk, Keng Liang Loi
  • Patent number: 12243275
    Abstract: A three-dimensional data encoding method includes: determining a first maximum bit count for encoded data obtained after encoding at least one of (i) a divisional data unit obtained when point cloud data indicating a three-dimensional point cloud is divided or (ii) a point cloud data unit of the point cloud data before the dividing; and generating a bitstream by encoding (i) items of divisional data obtained by dividing the point cloud data or (ii) the point cloud data before the dividing, to satisfy the first maximum bit count determined. The bitstream includes first bit count information indicating the first maximum bit count.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: March 4, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Chung Dean Han, Pongsak Lasang, Pradit Mittrapiyanuruk, Keng Liang Loi, Noritaka Iguchi, Toshiyasu Sugio
  • Patent number: 12230003
    Abstract: A three-dimensional data decoding method includes: obtaining three-dimensional space information including encoded three-dimensional points; calculating an angle formed by a line segment connecting a predetermined position in the three-dimensional space information and a first base point and a line segment connecting the first base point and a second base point different from the first base point; determining whether the angle calculated satisfies a predetermined condition; and decoding the encoded three-dimensional points included in the three-dimensional space information when the angle calculated is determined to satisfy the predetermined condition, and not decoding the encoded three-dimensional points included in the three-dimensional space information when the angle calculated is determined not to satisfy the predetermined condition.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: February 18, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Chung Dean Han, Pongsak Lasang, Pradit Mittrapiyanuruk, Keng Liang Loi, Noritaka Iguchi, Toshiyasu Sugio
  • Publication number: 20250054198
    Abstract: A three-dimensional data encoding method of encoding three-dimensional points includes: re-ordering, in a re-ordered data order, pieces of attribute information of the three-dimensional points arranged in a predetermined order; encoding the pieces of attribute information re-ordered in the re-ordering, in accordance with the re-ordered data order; and generating a bitstream including (i) order information indicating the predetermined order and (ii) the pieces of attribute information encoded in the encoding.
    Type: Application
    Filed: October 31, 2024
    Publication date: February 13, 2025
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Pongsak LASANG, Chung Dean HAN
  • Publication number: 20250045969
    Abstract: A three-dimensional data encoding method includes: calculating coefficient values from pieces of attribute information of three-dimensional points included in point cloud data; quantizing the coefficient values to generate quantization values; and generating a bitstream including the quantization values. The three-dimensional points corresponding to the coefficient values belong to one layer among one or more layers. Each of a predetermined number of layers among the one or more layers is assigned a quantization parameter for the layer. In the quantizing, (i) when a quantization parameter is assigned to a layer to which each of the coefficient values belongs, the coefficient value is quantized using the quantization parameter, and (ii) when the quantization parameter is not assigned to a layer to which each of the coefficient values belongs, the coefficient value is quantized using a quantization parameter assigned to one layer among the predetermined number of the layers.
    Type: Application
    Filed: October 23, 2024
    Publication date: February 6, 2025
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Chung Dean HAN, Pongsak LASANG
  • Patent number: 12200254
    Abstract: A three-dimensional data encoding method includes: generating combined point cloud data by combining pieces of point cloud data; and generating a bitstream by encoding the combined point cloud data. The bitstream includes (i) first information indicating a maximum number of duplicated points that are included in each of the pieces of point cloud data and are three-dimensional points having same geometry information, and (ii) pieces of second information corresponding one-to-one with point indexes and each indicating which of the pieces of point cloud data three-dimensional points having a corresponding one of the point indexes belong to, the point indexes being indexes to which values a total number of which is equal to the maximum number are assigned, and being used for identifying duplicated points belonging to same point cloud data.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: January 14, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toshiyasu Sugio, Noritaka Iguchi, Chung Dean Han, Chi Wang, Pongsak Lasang
  • Publication number: 20250014232
    Abstract: A three-dimensional data encoding method includes: encoding three-dimensional points each located in any one of a plurality of regions, on a per region basis, to generate encoded three-dimensional points; generating connectivity information generated based on a relationship between a first region among the plurality of regions and second regions aside from the first region among the plurality of regions, the connectivity information including (i) tile information indicating values each uniquely assigned to a different one of the plurality of regions and (ii) relation information indicating that the first region and one of the second regions are related; and generating a bitstream including the connectivity information generated and the encoded three-dimensional points.
    Type: Application
    Filed: September 25, 2024
    Publication date: January 9, 2025
    Inventors: Chung Dean HAN, Pongsak Lasang, Pradit Mittrapiyanuruk, Keng Liang Loi, Noritaka Iguchi, Toshiyasu Sugio
  • Publication number: 20240429090
    Abstract: A method includes providing a workpiece. The workpiece includes a substrate, a first dielectric layer over the substrate, a lower contact feature vertically extending through the first dielectric layer, a second dielectric layer over the lower contact feature and the first dielectric layer, a third dielectric layer over the second dielectric layer, a metal-insulator-metal (MIM) structure over the third dielectric layer, and a fourth dielectric layer over the MIM structure. The method further includes performing a first etch process to form an opening through the fourth dielectric layer to expose the MIM structure; performing a second etch process to extend the opening through the MIM structure to expose the third dielectric layer; performing a third etch process to further extend the opening into the third dielectric layer; and performing a fourth etch process to further extend the opening through the second dielectric layer to expose the lower contact feature.
    Type: Application
    Filed: June 20, 2023
    Publication date: December 26, 2024
    Inventors: Yao-Jhen Yang, Jiann-Horng Lin, Chung Ta Han, Hsiang-Ku Shen
  • Patent number: 12165367
    Abstract: A three-dimensional data encoding method of encoding three-dimensional points includes: re-ordering, in a re-ordered data order, pieces of attribute information of the three-dimensional points arranged in a predetermined order; encoding the pieces of attribute information re-ordered in the re-ordering, in accordance with the re-ordered data order; and generating a bitstream including (i) order information indicating the predetermined order and (ii) the pieces of attribute information encoded in the encoding.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: December 10, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toshiyasu Sugio, Noritaka Iguchi, Pongsak Lasang, Chung Dean Han
  • Publication number: 20240394926
    Abstract: A three-dimensional data encoding method includes: transforming pieces of attribute information of three-dimensional points included in point cloud data into coefficient values; and encoding the coefficient values to generate a bitstream. In the transforming, weighting calculation is performed hierarchically to generate the coefficient values belonging to one of layers, the weighting calculation separating each of the pieces of attribute information into a high-frequency component and a low-frequency component. In the weighting calculation, the weighting calculation is performed using weights fixed or not fixed in the layers. The bitstream includes first information indicating whether to fix the weights in the layers.
    Type: Application
    Filed: August 5, 2024
    Publication date: November 28, 2024
    Inventors: Toshiyasu SUGIO, Noritaka IGUCHI, Pongsak LASANG, Chung Dean HAN