Patents by Inventor Ji Yoon Chung

Ji Yoon Chung 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: 20240103376
    Abstract: Proposed is a bake unit capable of rapid thermal treatment, an operation method of the bake unit, and photo spinner equipment. The bake unit that performs a thermal process on a substrate in the photo spinner equipment includes a heater for heating the substrate, a chiller for cooling the substrate, a substrate transfer robot for transferring the substrate, and a controller controlling an operation of the substrate transfer robot. The substrate transfer robot includes an arm base configured to be able to move up and down in a vertical direction, and an upper arm and a lower arm coupled to the arm base to move up and down together but be independently horizontally driven.
    Type: Application
    Filed: September 3, 2023
    Publication date: March 28, 2024
    Applicant: SEMES CO., LTD.
    Inventors: Kyung Taek IM, Ji Yoon CHUNG
  • Patent number: 11897397
    Abstract: A mounting base for sensor is provided. The mounting base comprises: a body having a top surface; a mounting portion located on the top surface of the body, the mounting portion is configured for mounting a sensor; and at least one airflow generating component, the airflow generating component is configured for forming at least one airflow on a side of the sensor mounted on the mounting portion.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: February 13, 2024
    Assignee: WERIDE CORP.
    Inventor: Ji Yoon Chung
  • Patent number: 11846726
    Abstract: An object identifying method is provided. The method comprises: acquiring detection data associated with a detection signal, wherein the detection data comprises a transmission time of the detection signal transmitted by a LiDAR device; acquiring reflection data associated with a reflection signal of the detection signal reflected by an object at an object distance from the LiDAR device, and the reflection data comprises a receipt time of the reflection signal and an intensity of the reflection signal; and determining whether the object is an interference by comparing the intensity of the reflection signal with a distance-dependent threshold intensity.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: December 19, 2023
    Assignee: WERIDE CORP.
    Inventor: Ji Yoon Chung
  • Patent number: 11828854
    Abstract: This disclosure describes example methods and apparatus for automatic identification of performance degradation in a Light Detection and Ranging (LIDAR) device and for providing appropriate precautions in the forms of operation interventions, warnings/alerts, and initiation of maintenance procedures. The performance degradation is derived from various performance indicators obtained by analyzing echo measurement samples detected by the LIDAR device.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: November 28, 2023
    Assignee: WeRide Corp.
    Inventor: Ji Yoon Chung
  • Patent number: 11663910
    Abstract: Disclosed herein is a handheld speed gun incorporating automatic number plate recognition (ANPR) functionality. As the image size of a vehicle license plate varies depending on its distance from the speed gun, in the present invention the distance to the target vehicle is known through the functionality of the laser sensor so the size of the pixels for the number plate can be estimated. Since the image of the number plate may be tilted in a handheld device, the present invention compensates for this by use of the instrument's tilt sensor or through other compensation by use of the image itself.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: May 30, 2023
    Assignees: Laser Technology, Inc., Kama-Tech (HK) Limited
    Inventors: Ji Yoon Chung, Jeremy G. Dunne
  • Publication number: 20220208000
    Abstract: Disclosed herein is a handheld speed gun incorporating automatic number plate recognition (ANPR) functionality. As the image size of a vehicle license plate varies depending on its distance from the speed gun, in the present invention the distance to the target vehicle is known through the functionality of the laser sensor so the size of the pixels for the number plate can be estimated. Since the image of the number plate may be tilted in a handheld device, the present invention compensates for this by use of the instrument's tilt sensor or through other compensation by use of the image itself.
    Type: Application
    Filed: March 16, 2022
    Publication date: June 30, 2022
    Applicants: Laser Technology, Inc., Kama-Tech (HK) Limited
    Inventors: Ji Yoon Chung, Jeremy G. Dunne
  • Publication number: 20220075072
    Abstract: This disclosure describes example methods and apparatus for automatic identification of performance degradation in a Light Detection and Ranging (LIDAR) device and for providing appropriate precautions in the forms of operation interventions, warnings/alerts, and initiation of maintenance procedures. The performance degradation is derived from various performance indicators obtained by analyzing echo measurement samples detected by the LIDAR device.
    Type: Application
    Filed: September 9, 2020
    Publication date: March 10, 2022
    Applicant: WeRide Corp.
    Inventor: Ji Yoon Chung
  • Publication number: 20210208259
    Abstract: A method for noise filtering for LiDAR. The method comprises: receiving a scanned points data indicative of an environment obtained by emitting light pulses from a sensor of a vehicle into the environment where the vehicle is driving; obtaining an object region by grouping together a set of connected points within a road region representing a road surface in the environment generated based on the scanned points data, wherein each of the set of connected points comprises a non-road reflection data indicative of a reflective position not located on the road surface; acquiring one or more noise evaluation features of the object region, wherein the one or more noise evaluation features comprise whether the object region comprises at least one dual-reflection point all surrounded by other dual-reflection points; determining whether the non-road reflection data of all points within the object region are noisy data based on the one or more noise evaluation features.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 8, 2021
    Inventor: Ji Yoon CHUNG
  • Publication number: 20210048532
    Abstract: An optical system, a method and an apparatus for diagnosing the optical system are provided. The optical system includes a laser sensor, and a tubular sleeve surrounding the laser sensor and configured to move upwards or downwards relative to the laser sensor to cover or expose the laser sensor. The method includes: driving the tubular sleeve to cover the laser sensor to form an enclosed chamber; filling the enclosed chamber with fluid; controlling at least one of the one or more transmitters to emit an optical signal into the fluid; controlling at least one of the one or more receivers to detect a scattered signal of the optical signal; determining whether the at least one of the one or more transmitters or the at least one of the one or more receivers has a fault based on the scattered signal.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 18, 2021
    Inventor: Ji Yoon CHUNG
  • Publication number: 20210018596
    Abstract: An object identifying method is provided. The method comprises: acquiring detection data associated with a detection signal, wherein the detection data comprises a transmission time of the detection signal transmitted by a LiDAR device; acquiring reflection data associated with a reflection signal of the detection signal reflected by an object at an object distance from the LiDAR device, and the reflection data comprises a receipt time of the reflection signal and an intensity of the reflection signal; and determining whether the object is an interference by comparing the intensity of the reflection signal with a distance-dependent threshold intensity.
    Type: Application
    Filed: July 20, 2020
    Publication date: January 21, 2021
    Inventor: Ji Yoon CHUNG
  • Publication number: 20200386860
    Abstract: A mounting base for sensor is provided. The mounting base comprises: a body having a top surface; a mounting portion located on the top surface of the body, the mounting portion is configured for mounting a sensor; and at least one airflow generating component, the airflow generating component is configured for forming at least one airflow on a side of the sensor mounted on the mounting portion.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 10, 2020
    Inventor: Ji Yoon CHUNG
  • Publication number: 20200160700
    Abstract: Disclosed herein is a handheld speed gun incorporating automatic number plate recognition (ANPR) functionality. As the image size of a vehicle license plate varies depending on its distance from the speed gun, in the present invention the distance to the target vehicle is known through the functionality of the laser sensor so the size of the pixels for the number plate can be estimated. Since the image of the number plate may be tilted in a handheld device, the present invention compensates for this by use of the instrument's tilt sensor or through other compensation by use of the image itself.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 21, 2020
    Applicants: Laser Technology, Inc., Kama-Tech (HK) Limited
    Inventors: Ji Yoon Chung, Jeremy G. Dunne
  • Publication number: 20130271744
    Abstract: A laser rangefinding module for cable connected and/or wireless operative association with smartphones and tablet computers. In a particular embodiment of the present invention disclosed herein, the operation of the laser rangefinder module is controlled by the smartphone or tablet computer and functions through the smartphone touchscreen with the laser rangefinder results being displayed on the smartphone display.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 17, 2013
    Applicants: Kama-Tech (HK) Limited, Laser Technology, Inc.
    Inventors: Eric André Miller, Ji Yoon Chung
  • Patent number: 6429389
    Abstract: The electrical contacts of an integrated circuit are coupled to printed circuit board (PCB) bonding pads that include vias. A method for fabricating an electronic assembly utilizes at least one operation in which a thermally expansive substance, such as a volatile organic compound (VOC), is applied to the PCB. Some of the VOC goes into the via channels. The electrical contacts of a surface mount technology component such as a ball grid array (BGA) component are affixed to the bonding pads using a reflow soldering technique. According to one embodiment, the via channels are formed so as to inhibit bridging between adjacent BGAs during a solder reflow operation by minimizing outgassing of the VOC from the via channels. A substrate and an electronic system are also described.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: August 6, 2002
    Assignee: Intel Corporation
    Inventors: Ji Yoon Chung, Stephen C. Joy