Patents by Inventor Tae-Jin Lee

Tae-Jin Lee 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).

  • Apparatus and method for encoding/decoding audio signal using information of previous frame
    Patent number: 11581000
    Abstract: Disclosed is an apparatus and method for encoding/decoding an audio signal using information of a previous frame. An audio signal encoding method includes: generating a current latent vector by reducing dimension of a current frame of an audio signal; generating a concatenation vector by concatenating a previous latent vector generated by reducing dimension of a previous frame of the audio signal with the current latent vector; and encoding and quantizing the concatenation vector.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: February 14, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Woo-Taek Lim, Seung Kwon Beack, Jongmo Sung, Mi Suk Lee, Tae Jin Lee
  • AUDIO ENCODING/DECODING APPARATUS AND METHOD USING VECTOR QUANTIZED RESIDUAL ERROR FEATURE
    Publication number: 20230039546
    Abstract: An audio encoding/decoding apparatus and method using vector quantized residual error features are disclosed. An audio signal encoding method includes outputting a bitstream of a main codec by encoding an original signal, decoding the bitstream of the main codec, determining a residual error feature vector from a feature vector of a decoded signal and a feature vector of the original signal, and outputting a bitstream of additional information by encoding the residual error feature vector.
    Type: Application
    Filed: April 1, 2022
    Publication date: February 9, 2023
    Inventors: Inseon JANG, Seung Kwon BEACK, Jongmo SUNG, Tae Jin LEE, Woo-taek LIM, Jongwon SHIN, Youngju CHEON, Sangwook HAN, Soojoong HWANG
  • AUDIO SIGNAL ENCODING AND DECODING METHOD, AND ENCODER AND DECODER PERFORMING THE METHODS
    Publication number: 20230038394
    Abstract: Disclosed are a method of encoding and decoding an audio signal and an encoder and a decoder performing the method. The method of encoding an audio signal includes identifying an input signal, and generating a bitstring of each encoding layer by applying, to the input signal, an encoding model including a plurality of successive encoding layers that encodes the input signal, in which a current encoding layer among the encoding layers is trained to generate a bitstring of the current encoding layer by encoding an encoded signal which is a signal encoded in a previous encoding layer and quantizing an encoded signal which is a signal encoded in the current encoding layer.
    Type: Application
    Filed: July 30, 2021
    Publication date: February 9, 2023
    Inventors: Woo-taek LIM, Seung Kwon BEACK, Jongmo SUNG, Tae Jin LEE, Inseon JANG, Minje KIM
  • User interface for searching content of a communication platform using reaction icons
    Patent number: 11561673
    Abstract: A user interface comprising at least a set of reaction icons configured to initiate a search of content of a communication platform is described. In an example, at least the set of reaction icons can be presented via the user interface of the communication platform, wherein individual reaction icons of the set of reaction icons are selectable as search parameters in the user interface. In response to receiving a selection of at least one reaction icon, a search for content, associated with the at least one reaction icon, stored in a database associated with the communication platform can be initiated.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 24, 2023
    Assignee: Salesforce, Inc.
    Inventors: Mckenna Lowry, Austen Payan, Anthony Tae Jin Lee, Racine Harris
  • Method of encoding and decoding audio signal using linear predictive coding and encoder and decoder performing the method
    Patent number: 11562757
    Abstract: An audio signal encoding method performed by an encoder includes identifying a time-domain audio signal in a unit of blocks, quantizing a linear prediction coefficient extracted from a combined block in which a current original block of the audio signal and a previous original block chronologically adjacent to the current original block using frequency-domain linear predictive coding (LPC), generating a temporal envelope by dequantizing the quantized linear prediction coefficient, extracting a residual signal from the combined block based on the temporal envelope, quantizing the residual signal by one of time-domain quantization and frequency-domain quantization, and transforming the quantized residual signal and the quantized linear prediction coefficient into a bitstream.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: January 24, 2023
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Kwon Beack, Jongmo Sung, Mi Suk Lee, Tae Jin Lee, Woo-taek Lim, Inseon Jang, Jin Soo Choi
  • ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
    Publication number: 20230015911
    Abstract: An additive, an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery, the additive being represented by Chemical Formula 1:
    Type: Application
    Filed: August 26, 2022
    Publication date: January 19, 2023
    Inventors: Wonseok CHO, Younghye KANG, Dongyoung KIM, Soojin KIM, Aeran KIM, Suyeol RYU, Jeongmin SHIN, Junyong LEE, Tae Jin LEE, Jin-Hyeok LIM, Myunghwan JEONG, Hyunbong CHOI, Jungmin HAN
  • USER INTERFACE FOR SEARCHING CONTENT OF A COMMUNICATION PLATFORM USING REACTION ICONS
    Publication number: 20230004277
    Abstract: A user interface comprising at least a set of reaction icons configured to initiate a search of content of a communication platform is described. In an example, at least the set of reaction icons can be presented via the user interface of the communication platform, wherein individual reaction icons of the set of reaction icons are selectable as search parameters in the user interface. In response to receiving a selection of at least one reaction icon, a search for content, associated with the at least one reaction icon, stored in a database associated with the communication platform can be initiated.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 5, 2023
    Inventors: McKenna Lowry, Austen Payan, Anthony Tae Jin Lee, Racine Harris
  • Method and device for determining loss function for audio signal
    Patent number: 11545163
    Abstract: A loss function of a signal including an audio signal is determined. A loss function determining system for an audio signal is provided. A loss function is determined by: determining a reference quantization index by quantizing an original input signal; inputting the original input signal to a neural network classifier and applying an activation function to an output layer of the neural network classifier; and determining a total loss function for the neural network classifier using an output of the activation function and the reference quantization index.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 3, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung Kwon Beack, Woo-taek Lim, Tae Jin Lee
  • VIDEO PROCESSING METHOD AND DEVICE USING RESOLUTION OF REFERENCE PICTURE, AND RECORDING MEDIUM
    Publication number: 20220417507
    Abstract: Disclosed herein are a video processing method, apparatus and storage medium using the resolution of a reference picture. Filtering is performed based on resolutions of reference pictures of blocks forming a boundary. The resolutions of the reference pictures may define filtering. Depending on whether the resolutions of the reference pictures are different from each other, one or more filter selection parameters for filtering may be determined or updated. Further, based on whether the resolutions of the reference pictures are different from each other, the boundary strength of the filter may be determined. Because filtering is defined using the resolutions of reference pictures, performance of encoding and/or decoding may be improved.
    Type: Application
    Filed: November 23, 2020
    Publication date: December 29, 2022
    Applicants: Electronics and Telecommunications Research Institute, KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Seoung-Jun OH, Woong LIM, Gun BANG, Tae-Jin LEE, Dong-Gyu SIM, Jun-Taek PARK, Min-Hun LEE, Jong-Seok LEE
  • UNIFIED SPEECH/AUDIO CODEC (USAC) PROCESSING WINDOWS SEQUENCE BASED MODE SWITCHING
    Publication number: 20220406321
    Abstract: A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.
    Type: Application
    Filed: August 25, 2022
    Publication date: December 22, 2022
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Seungkwon BEACK, Tae Jin LEE, Min Je KIM, Kyeongok KANG, Dae Young JANG, Jeongil SEO, Jin Woo HONG, Chieteuk AHN, Ho Chong PARK, Young-cheol PARK
  • LPC RESIDUAL SIGNAL ENCODING/DECODING APPARATUS OF MODIFIED DISCRETE COSINE TRANSFORM (MDCT)-BASED UNIFIED VOICE/AUDIO ENCODING DEVICE
    Publication number: 20220406320
    Abstract: Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).
    Type: Application
    Filed: August 25, 2022
    Publication date: December 22, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Kwon BEACK, Tae Jin LEE, Min Je KIM, Kyeongok KANG, Dae Young JANG, Jin Woo HONG, Jeongil SEO, Chieteuk AHN, Hochong PARK, Young-Cheol PARK
  • METHODS OF ENCODING AND DECODING AUDIO SIGNAL, AND ENCODER AND DECODER FOR PERFORMING THE METHODS
    Publication number: 20220375483
    Abstract: Disclosed are methods of encoding and decoding an audio signal, and an encoder and a decoder for performing the methods. The method of encoding an audio signal includes identifying an input signal corresponding to a low frequency band of the audio signal, windowing the input signal, generating a first latent vector by inputting the windowed input signal to a first encoding model, transforming the windowed input signal into a frequency domain, generating a second latent vector by inputting the transformed input signal to a second encoding model, generating a final latent vector by combining the first latent vector and the second latent vector, and generating a bitstream corresponding to the final latent vector.
    Type: Application
    Filed: November 8, 2021
    Publication date: November 24, 2022
    Inventors: Woo-taek LIM, Seung Kwon BEACK, Jongmo SUNG, Tae Jin LEE, Inseon JANG, Jong-won SEOK, YUNSU KIM
  • Audio coding method based on spectral recovery scheme
    Patent number: 11508386
    Abstract: An inventive concept relates to an audio coding method to which CNN-based frequency spectrum recovery is applied. An inventive concept transmits a part of frequency spectral coefficients generated in transform coding to a decoder and the decoder recovers the frequency spectral coefficient not transmitted. Furthermore, the signs of frequency spectral coefficient are transmitted from an encoder to the decoder depending on a sign transmission rule.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: November 22, 2022
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation
    Inventors: Hochong Park, Seung Kwon Beack, Jongmo Sung, Seong-Hyeon Shin, Mi Suk Lee, Tae Jin Lee, Jin Soo Choi
  • Method of processing residual signal for audio coding, and audio processing apparatus
    Patent number: 11508385
    Abstract: Disclosed is a method of processing a residual signal for audio coding and an audio coding apparatus. The method learns a feature map of a reference signal through a residual signal learning engine including a convolutional layer and a neural network and performs learning based on a result obtained by mapping a node of an output layer of the neural network and a quantization level of index of the residual signal.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: November 22, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung Kwon Beack, Jongmo Sung, Mi Suk Lee, Tae Jin Lee, Hui Yong Kim
  • Method and apparatus for selective energy transmission in wireless network
    Patent number: 11510206
    Abstract: Provided is a method and apparatus for selective energy transmission in a wireless network. The method for selective energy transmission performed by a terminal in a wireless network includes selecting a transmission request frame for requesting data transmission or a transmission request frame for requesting data transmission and energy reception based on a remaining energy of the terminal; performing a channel contention based on a contention window; receiving a transmission acknowledgement frame by transmitting the selected transmission request frame to a hybrid access point; and transmitting data to the hybrid access point or receiving energy from the hybrid access point according to the transmitted transmission request frame.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: November 22, 2022
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Tae-Jin Lee, Kwan Young Moon, Yun Min Kim
  • METHOD AND APPARATUS FOR RENDERING VOLUME SOUND SOURCE
    Publication number: 20220360932
    Abstract: A method and apparatus for rendering a volume sound source are disclosed. The method of rendering a volume sound source may include identifying information about a listener and information about the volume sound source, determining a corresponding area in which a source element is disposed in the volume sound source in consideration of the information about the listener, determining an angle between the listener and the corresponding area based on the information about the listener and the information about the volume sound source, determining a number of source elements disposed in the corresponding area according to the angle, determining a position and a gain of the source element using i) the number of source elements and ii) a distance between the listener and the volume sound source, and rendering the volume sound source according to the position and the gain of the source element.
    Type: Application
    Filed: February 25, 2022
    Publication date: November 10, 2022
    Inventors: Dae Young JANG, Kyeongok KANG, Jae-hyoun YOO, Yong Ju LEE, Tae Jin LEE
  • METHODS OF ENCODING AND DECODING AUDIO SIGNAL USING SIDE INFORMATION, AND ENCODER AND DECODER FOR PERFORMING THE METHODS
    Publication number: 20220358940
    Abstract: Disclosed are methods of encoding and decoding an audio signal using side information, and an encoder and a decoder for performing the methods. The method of encoding an audio signal using side information includes identifying an input signal, the input signal being an original audio signal, extracting side information from the input signal using a learning model trained to extract side information from a feature vector of the input signal, encoding the input signal, and generating a bitstream by combining the encoded input signal and the side information.
    Type: Application
    Filed: November 16, 2021
    Publication date: November 10, 2022
    Inventors: Woo-taek LIM, Seung Kwon BEACK, Jongmo SUNG, Tae Jin LEE, Inseon JANG, Jong Won SHIN, Soojoong HWANG, Youngju CHEON, Sangwook HAN
  • Residual coding method of linear prediction coding coefficient based on collaborative quantization, and computing device for performing the method
    Patent number: 11488613
    Abstract: Disclosed are a method for coding a residual signal of LPC coefficients based on collaborative quantization and a computing device for performing the method. The residual signal coding method includes: generating encoded LPC coefficients and LPC residual signals by performing LPC analysis and quantization on an input speech; Determining a predicted LPC residual signal by applying the LPC residual signal to cross module residual learning; Performing LPC synthesis using the coded LPC coefficients and the predicted LPC residual signal; It may include the step of determining an output speech that is a synthesized output according to a result of performing the LPC synthesis.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: November 1, 2022
    Assignees: Electronics and Telecommunications Research Institute, The Trustees of Indiana University
    Inventors: Minje Kim, Kai Zhen, Mi Suk Lee, Seung Kwon Beack, Jongmo Sung, Tae Jin Lee, Jin Soo Choi
  • ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME
    Publication number: 20220344715
    Abstract: Provided is an electrolyte solution for a lithium secondary battery, the electrolyte solution comprising a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Chemical Formula 1. The contents of Chemical Formula 1 are the same as described in the specification.
    Type: Application
    Filed: September 9, 2020
    Publication date: October 27, 2022
    Inventors: Younghye KANG, Dongyoung KIM, Soojin KIM, Aeran KIM, Suyeol RYU, Jeongmin SHIN, Junyong LEE, Tae Jin LEE, Jin-Hyeok LIM, Myunghwan JEONG, Wonseok CHO, Hyunbong CHOI, Jungmin HAN
  • VEHICLE, SERVER AND WIRELESS CHARGING SYSTEM
    Publication number: 20220340035
    Abstract: A communication device of a vehicle transmits a charging permission request message to a server and receives charging permission information from the server. A charging requester is configured to transmit a charging request message including the charging permission information to a charging device and a power receiver is configured to receive a charging response message from the charging device and to wirelessly receive power from the charging device.
    Type: Application
    Filed: October 20, 2021
    Publication date: October 27, 2022
    Inventors: Ji Hwon Kim, So Jin Lee, Tae-Jin Lee, Yunmin Kim, Kyoung Min Kim, Kwanyoung Moon