Patents by Inventor Kyoung-Jin Chang

Kyoung-Jin Chang 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).

  • Patent number: 11928388
    Abstract: A vehicle sound service system and a method thereof are provided. The vehicle sound service system includes a service server including a communication device that may be configured to transmit and receive data with a mobile terminal loaded with a camera and a processing device electrically connected with the communication device. The processing device may be configured to receive an image transmitted from the mobile terminal using the communication device, when the mobile terminal captures the image around a vehicle using the camera and transmits the image, to analyze the received image to estimate a driving place, and to select a sound that matches the estimated driving place and transmits the selected sound to the mobile terminal.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: March 12, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventor: Kyoung Jin Chang
  • Publication number: 20240037867
    Abstract: An experience sharing system for sharing an experience with others using VR and a method thereof includes a VR recorder that records a surrounding environment image, a user response image, and a surrounding sound of a first user to generate experience content, a VR player that plays and provides the experience content to a second user, and a data processing device connected to the VR recorder and the VR player over a communication network. The data processing device pre-analyzes the experience content received from the VR recorder to classify a category, adds an image matched with the classified category to the experience content, stores the experience content to which the image is added in a DB, and accesses the experience content from the DB depending on a request of the VR player and transmits the accessed experience content to the VR player.
    Type: Application
    Filed: May 22, 2023
    Publication date: February 1, 2024
    Applicants: HYUNDAI MOTOR COMPANY, Kia Corporation
    Inventor: Kyoung Jin CHANG
  • Publication number: 20240029700
    Abstract: A noise masking apparatus and method are disclosed. The noise masking apparatus includes a receiver that receives an impact sound and a controller. The controller generates a seed sound source based on an impact noise when the received impact sound is determined as the impact noise, modulates the seed sound source to generate and reproduce a masking sound, sets a repeating reproduction time of the masking sound and a total reproduction time of the masking sound, and reproduces the masking sound during the repeating reproduction time and the total reproduction time.
    Type: Application
    Filed: February 1, 2023
    Publication date: January 25, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Kyoung Jin Chang
  • Patent number: 11862137
    Abstract: A vibration reducing device is attached to a structure and blocks sound transmitted through the structure. The vibration reducing device includes a unit structure having a target frequency band, the unit structure including a plurality of unit cells, each formed of an acoustic meta-material and having a different target frequency, the unit cells being connected through first bridges; and a predetermined number of unit structures being connected through second bridges and attached to the structure, where each of the unit cells comprises: a mass portion of which a size is set according to the target frequency; a base frame formed as a quadrangular frame, the mass portion being eccentrically disposed in the base frame; and a support portion that connects the mass portion and the base frame, the support portion having a size that is set according to the target frequency.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: January 2, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Kyoung-Jin Chang, Sangjin Hong, Dong Chul Park
  • Publication number: 20230410776
    Abstract: A system and method for masking periodic noise, which may be capable of efficiently masking periodic noise by outputting music made by synthesizing a song and a beat sound. The system may include at least one sensor configured to detect a periodic noise signal, at least one memory configured to store at least one song and at least one beat sound, a speaker, and at least one processor configured to select a first song and a first beat sound from the at least one song and the at least one beat sound, adjust a tempo of the first song, determine a playing period of the first beat sound, and/or control the speaker to output music made by synthesizing the first song with the adjusted tempo and the first beat sound that may be repeated in accordance with the determined playing period.
    Type: Application
    Filed: December 8, 2022
    Publication date: December 21, 2023
    Inventor: Kyoung-Jin Chang
  • Patent number: 11807298
    Abstract: An apparatus for generating a warning vibration of a steering wheel includes, a reservoir disposed within the steering wheel and filled with a non-conductive fluid, a connection tube connected to the reservoir and configured to form a hydraulic line of the non-conductive fluid, an actuator disposed within the steering wheel, connected to the connection tube, and configured to vibrate according to inflow and outflow of the non-conductive fluid from the connection tube, a positive electrode and a negative electrode disposed on opposite sides of the reservoir, a high voltage power supplier configured to supply a high voltage to be applied to the positive electrode and the negative electrode, and a vibration generation controller configured to selectively apply an output voltage of the high voltage power supplier to the positive electrode and the negative electrode.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: November 7, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventor: Kyoung-Jin Chang
  • Publication number: 20230344374
    Abstract: Provided is a motor control apparatus for removing noise in a vehicle and a vehicle having the same. The vehicle generates a plurality of reference signals based on a velocity of a motor, filter the plurality of reference signals based on an error signal and a preset filter value, takes a sum of the filtered plurality of reference signals to obtain a target signal, generates a d-axis current command for reducing noise generated by the motor based on the target signal, generates a q-axis current command for controlling the velocity of the motor based on the velocity of the motor and a velocity command, generates a voltage command based on the d-axis current command of the motor and the q-axis current command of the motor, and outputs the generated voltage command to the inverter.
    Type: Application
    Filed: December 5, 2022
    Publication date: October 26, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Kyoung-Jin Chang
  • Publication number: 20230262383
    Abstract: A vehicle selects various sound sources and outputs driving sound based on information received from the navigation system. A database stores sound sources classified as first and second emotions. A controller outputs a landmark name based on a route guidance text and outputs a ratio of the first and second emotions corresponding to the landmark name. The controller selects a first sound source from the sound sources classified as the first emotion based on the first emotion ratio, selects a second sound source from the sound sources classified as the second emotion based on the second emotion ratio and determines first and second playback periods based on the ratios of the first and second emotions. The controller outputs a first sound generated based on the first sound source during the first playback period and a second sound generated based on the second sound source during the second playback period.
    Type: Application
    Filed: April 26, 2023
    Publication date: August 17, 2023
    Inventor: Kyoung Jin Chang
  • Patent number: 11720321
    Abstract: An embodiment vehicle includes a camera, a speaker, and a controller electrically connected to the camera and the speaker, wherein the controller is configured to acquire a first external image outside the vehicle from the camera, input the first external image to a pre-trained first neural network and extract a first feature corresponding to the first external image, and control the speaker to output a first sound sample among a plurality of sound samples, based on a comparison of the first feature and pre-stored features corresponding to the plurality of sound samples.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: August 8, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Kyoung-Jin Chang, Dong Chul Park, Jinsung Lee, Sangjin Hong
  • Publication number: 20230191954
    Abstract: Disclosed are an apparatus and a method for controlling a vehicle seat so as to control a seat back and a neck pillow based on a sound. The apparatus includes the vehicle seat installed in a vehicle and including a seat back and a neck pillow, a detector for detecting vehicle information and seat information, and a processor connected to the vehicle seat and the detector, wherein the processor determines a vehicle state and a seat sitting posture based on the vehicle information and the seat information, analyzes a sound being reproduced in the vehicle, determines a haptic pattern and a haptic pressure based on the vehicle state and the seat sitting posture, and the analysis of the sound, and controls the seat back and the neck pillow based on the determined haptic pattern and haptic pressure to provide a haptic effect.
    Type: Application
    Filed: August 3, 2022
    Publication date: June 22, 2023
    Inventors: Ki Chang Kim, Tae Kun Yun, Dong Chul Park, Kyoung Jin Chang, Eun Soo Jo, Jin Sung Lee
  • Publication number: 20230172797
    Abstract: Disclosed are a flexible vibration cushion and a method of controlling the same. The flexible vibration cushion may include a cover member, a first soft filler material filled in the cover member; and a vibration generation device including components made of a soft material and disposed in the soft filler. The vibration generation device is configured to generate vibration as an electrostatic force is repeatedly generated and released. The vibration generation device may be applied in a vehicle part, e.g., headrest, thereby minimizing the foreign body sensation acting on the user’s skin while delivering soft and various senses of vibrations to the user.
    Type: Application
    Filed: October 11, 2022
    Publication date: June 8, 2023
    Inventors: Kyoung Jin Chang, Dong Chul Park, Ki Uk Kyung, Hyun Woo Kim, Ji Hyeong Ma, Jong Seok Nam, Min Ki Kim
  • Patent number: 11671754
    Abstract: A vehicle selects various sound sources and outputs driving sound based on information received from the navigation system. A database stores sound sources classified as first and second emotions. A controller outputs a landmark name based on a route guidance text and outputs a ratio of the first and second emotions corresponding to the landmark name. The controller selects a first sound source from the sound sources classified as the first emotion based on the first emotion ratio, selects a second sound source from the sound sources classified as the second emotion based on the second emotion ratio and determines first and second playback periods based on the ratios of the first and second emotions. The controller outputs a first sound generated based on the first sound source during the first playback period and a second sound generated based on the second sound source during the second playback period.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: June 6, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Kyoung Jin Chang
  • Publication number: 20230166756
    Abstract: A vehicle includes a driving motor; a driver electrically connected to the driving motor; and a controller electrically connected to the driver; wherein the controller is configured to control the driver to supply a driving current in which a first driving current for controlling a driving speed of the vehicle and a second driving current for generating vibration in the vehicle are overlapped, to the driving motor.
    Type: Application
    Filed: November 4, 2022
    Publication date: June 1, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventor: Kyoung-Jin CHANG
  • Publication number: 20230129087
    Abstract: A vehicle sound service system and a method thereof are provided. The vehicle sound service system includes a service server including a communication device that may be configured to transmit and receive data with a mobile terminal loaded with a camera and a processing device electrically connected with the communication device. The processing device may be configured to receive an image transmitted from the mobile terminal using the communication device, when the mobile terminal captures the image around a vehicle using the camera and transmits the image, to analyze the received image to estimate a driving place, and to select a sound that matches the estimated driving place and transmits the selected sound to the mobile terminal.
    Type: Application
    Filed: March 30, 2022
    Publication date: April 27, 2023
    Inventor: Kyoung Jin Chang
  • Patent number: 11623563
    Abstract: A sound generating apparatus for a vehicle includes: a motor controller that generates a motor torque corresponding to a target sound; and an output device that outputs the target sound based on vibration generated by the motor torque to generate a sound of the vehicle without requiring an external amplifier or a separate actuator, thus preventing increases in cost and weight.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: April 11, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Kyoung Jin Chang, Young Hoon Cho, Do Hong Lee
  • Publication number: 20230016272
    Abstract: A virtual sound provision apparatus for an electric vehicle includes a driving information detector configured to detect vehicle driving information for outputting a virtual driving sound, a microphone configured to detect an actual driving sound generated from the electric vehicle, a controller configured to determine a characteristic of a target sound based on an acceleration and deceleration driving pattern of a driver from an accelerator pedal input value and a brake pedal input value of the driver, and generating and outputting a sound control signal for outputting the virtual driving sound having the characteristic of the target sound based on the determined characteristic information of the target sound and characteristic information of the actual driving sound, and a sound device configured to output a virtual engine sound that simulates an engine sound from the electric vehicle at the time of acceleration and deceleration according to the sound control signal.
    Type: Application
    Filed: May 16, 2022
    Publication date: January 19, 2023
    Inventors: Ki Chang Kim, Jin Sung Lee, Ji Won Oh, Dong Chul Park, Kyoung Jin Chang, Tae Kun Yun, Jeong Soo Eo
  • Publication number: 20220410972
    Abstract: An apparatus for generating a warning vibration of a steering wheel includes, a reservoir disposed within the steering wheel and filled with a non-conductive fluid, a connection tube connected to the reservoir and configured to form a hydraulic line of the non-conductive fluid, an actuator disposed within the steering wheel, connected to the connection tube, and configured to vibrate according to inflow and outflow of the non-conductive fluid from the connection tube, a positive electrode and a negative electrode disposed on opposite sides of the reservoir, a high voltage power supplier configured to supply a high voltage to be applied to the positive electrode and the negative electrode, and a vibration generation controller configured to selectively apply an output voltage of the high voltage power supplier to the positive electrode and the negative electrode.
    Type: Application
    Filed: December 9, 2021
    Publication date: December 29, 2022
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventor: Kyoung-Jin CHANG
  • Patent number: 11524637
    Abstract: A vibration reduction device having an acoustic meta structure mounted to a vehicle body and configured to block a structure-borne noise transmitted through the vehicle body may include a plurality of unit structures arranged at a predetermined interval therebetween, wherein each of the unit structures includes frame mounted to the vehicle body and configured to separate a predetermined space into a predetermined number of separate sections formed by walls of the frame; and a vibrator formed at a corner portion of each of the separate sections and each of which has a natural frequency to block a vibration transmitted from the vehicle body through the frame.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: December 13, 2022
    Assignees: Hyundai Motor Company, Kia Motors Gorporation, Katholieke Universiteit Leuven of KU Leuven Research & Development
    Inventors: Kyoung Jin Chang, Claus Claeys, Wim Desmet, Bert Pluymers, Elke Deckers, Lucas Van Belle, Noé Geraldo Rocha De Melo Filho
  • Publication number: 20220388529
    Abstract: The present disclosure relates to a vibration generating apparatus for a vehicle including a state analysis device that generates analysis information based on the state information, a vibration signal modeling information generation device that generates vibration signal modeling information for the vibration of the vehicle based on the generated analysis information, and a vibration signal generation device that generates a vibration signal based on the generated vibration signal modeling information and driving information of the vehicle.
    Type: Application
    Filed: February 9, 2022
    Publication date: December 8, 2022
    Applicants: HYUNDAI MOTOR COMPANY, Kia Corporation
    Inventor: Kyoung Jin CHANG
  • Patent number: 11514884
    Abstract: A driving sound library provides driving sounds classified in various themes to a user by analyzing frequency characteristics and temporal characteristics of sound sources classified into categories and determining a chord corresponding to each sound source based on the frequency characteristics and the time characteristics. Modulated sound sources in which each sound source is modulated are generated by applying a chord corresponding to each sound source. The driving sound sources are generated using the sound sources and the modulated sound sources as input data. Pitches of the driving sound sources are then changed based on the driving sound sources and engine sound orders corresponding to an engine RPM of a preset range. Scores for each theme for the driving sounds are generated.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: November 29, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Kyoung-Jin Chang