公开(公告)号：US20250124657A1

公开(公告)日：2025-04-17

申请号：US18990433

申请日：2024-12-20

Applicant: DENSO CORPORATION

Inventor： Tomihiro IKEGAMI

IPC: G06T17/20 ,  G06T11/20

Abstract: A triangle generation apparatus includes an acquisition unit and a triangle division unit. The acquisition unit acquires a vertex coordinate group including coordinates of each vertex of one or a plurality of basic triangles. The triangle division unit divides each basic triangle defined by the coordinates of the vertices included in the vertex coordinate group into a plurality of subdivided triangles. The triangle division unit determines whether each basic triangle defined by the vertex coordinate group is a target triangle that has a shape having a relatively high degree of similarity to an equilateral triangle. The triangle division unit divides the basic triangle determined to not be the target triangle into a plurality of triangles to have the shape having a relatively high degree of similarity to an equilateral triangle. The triangle division unit generates the new vertex coordinate group including the vertex coordinates of the triangles after division.

公开(公告)号：US20240175981A1

公开(公告)日：2024-05-30

申请号：US18437095

申请日：2024-02-08

Applicant: DENSO CORPORATION

Inventor： Tomihiro IKEGAMI

IPC: G01S7/40

CPC classification number: G01S7/406

Abstract: A signal generation apparatus includes an extraction unit and a conversion unit. The extraction unit is configured to extract part of a frequency waveform as an extracted waveform. The frequency waveform is a waveform represented by a function of frequency. The part of the frequency waveform corresponds to frequencies satisfying a preset extraction condition indicating that amplitude of the frequency waveform is high. The conversion unit is configured to convert the extracted waveform extracted by the extraction unit into a time waveform, which is a waveform represented by a function of time, and generate the time waveform as a signal.

公开(公告)号：US20250124656A1

公开(公告)日：2025-04-17

申请号：US18990421

申请日：2024-12-20

Applicant: DENSO CORPORATION

Inventor： Tomihiro IKEGAMI

IPC: G06T17/20 ,  G06T11/20

Abstract: A triangle generation apparatus includes an acquisition unit and a triangle division unit. The acquisition unit acquires a vertex coordinate group including coordinates of each vertex of one or a plurality of basic triangles. The triangle division unit divides each basic triangle defined by the coordinates of the vertices included in the vertex coordinate group into a plurality of subdivided triangles. The triangle division unit determines whether each basic triangle defined by the vertex coordinate group is a target triangle that has a shape having a relatively high degree of similarity to an equilateral triangle. The triangle division unit divides the basic triangle determined to not be the target triangle into a plurality of triangles to have the shape having a relatively high degree of similarity to an equilateral triangle. The triangle division unit generates the new vertex coordinate group including the vertex coordinates of the triangles after division.

公开(公告)号：US20230099058A1

公开(公告)日：2023-03-30

申请号：US18058075

申请日：2022-11-22

Applicant: DENSO CORPORATION

Inventor： Tomihiro IKEGAMI ,  Kazushi KAWAGUCHI

IPC: H01Q13/10

Abstract: A waveguide slot antenna includes a waveguide having a plurality of slots spaced apart by a predefined distance in a central-axis direction of the waveguide, as a radiating section. An uneven section provided on an outer wall surface around the radiating section has a periodic concave-convex pattern extending from the radiating section. The uneven section includes a plurality of protrusions spaced apart by a predefined distance in a dispersed manner in each of an axis direction parallel to the central-axis of the waveguide in which the plurality of slots are arranged and an axis direction orthogonal to the central-axis of the waveguide, and grooves between the protrusions. The plurality of protrusions and the grooves causes incident waves incident from forward in a direction of radiation of radio waves emitted from the radiating section to be reflected in a direction different from an incident direction of the incident waves.