Patents by Inventor Chang Heon Lee

Chang Heon 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).

  • Patent number: 10158745
    Abstract: A vehicle connected to a terminal of a user to perform dialing includes a speech input unit that receives a speech of the user, a speech recognition unit that recognizes a command included in the received speech, a control unit that determines a preparation state for performing the dialing, and a display unit that displays information about the preparation state when preparation for performing the dialing is not completed.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: December 18, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Chang-Heon Lee, Hyun-woo Lee
  • Publication number: 20180274814
    Abstract: An air conditioner includes a discharge blade configured to move between a guide position at which a direction of air blown from a blower fan and discharged to an outlet is controlled, and a closing position at which the outlet is closed, wherein the discharge blade includes a plurality of blade holes through which the air is discharged through the discharge blade at the closing position, wherein the discharge blade moves between the guide position and the closing position and controls an air flow from the blower fan to a discharge plate or the outlet. Through this configuration, an air flow discharged to the outside of the housing can be controlled by operation of the discharge blade.
    Type: Application
    Filed: May 30, 2018
    Publication date: September 27, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang Ki CHO, Ki Jun KIM, Dae Dong KIM, Chang Heon LEE, Moon Sun SHIN, Young Lae JO
  • Publication number: 20180119984
    Abstract: An air conditioner includes a discharge blade configured to move between a guide position at which a direction of air blown from a blower fan and discharged to an outlet is controlled, and a closing position at which the outlet is closed, wherein the discharge blade includes a plurality of blade holes through which the air is discharged through the discharge blade at the closing position, wherein the discharge blade moves between the guide position and the closing position and controls an air flow from the blower fan to a discharge plate or the outlet. Through this configuration, an air flow discharged to the outside of the housing can be controlled by operation of the discharge blade.
    Type: Application
    Filed: September 29, 2017
    Publication date: May 3, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang Ki CHO, Ki Jun KIM, Dae Dong KIM, Chang Heon LEE, Moon Sun SHIN, Young Lae JO
  • Patent number: 9812125
    Abstract: A speech recognition device is configured to increase usability by retrying speech recognition without returning to a previous operation or a re-input of speech when a user's speech is misrecognized. The speech recognition device is further configured increase accuracy of recognition by changing a search environment when the user's speech is misrecognized or when re-recognition is performed since the recognized speech is rejected due to a low confidence. A vehicle includes a speech input device configured to receive speech; and a speech recognition device configured to recognize the received speech and output a recognition result of the received speech. The speech recognition device resets a recognition environment applied to speech recognition and re-recognizes the received speech when a re-recognition instruction is input by a user, and resets the reset recognition environment to an initial value when the re-recognition is completed.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: November 7, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Chang-Heon Lee, KyuSeop Bang
  • Publication number: 20170214778
    Abstract: A vehicle connected to a terminal of a user to perform dialing includes a speech input unit that receives a speech of the user, a speech recognition unit that recognizes a command included in the received speech, a control unit that determines a preparation state for performing the dialing, and a display unit that displays information about the preparation state when preparation for performing the dialing is not completed.
    Type: Application
    Filed: June 3, 2016
    Publication date: July 27, 2017
    Inventors: Chang-Heon LEE, Hyun-woo LEE
  • Publication number: 20170176026
    Abstract: Disclosed are provided an air conditioner having a door that can be smoothly moved by a friction member. The air conditioner includes a main body configured to form an outer appearance, an outlet provided in a lower portion of the main body, and configured to discharge air, a door disposed in a front portion of the main body, and configured to open or close the outlet, a driving device including a pinion configured to be rotatable, and a rack interlocked with the pinion and configured to be movable together with the door; and a friction member configured to press the rack when the rack moves so as to maintain a predetermined spacing between the rack and the pinion. The rack and the door can slide smoothly along a curved path through the friction member by a force of the motor.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 22, 2017
    Inventors: Kyeong Ae Lee, Chang Heon Lee, Seong Deok Cheon
  • Patent number: 9472204
    Abstract: An apparatus for eliminating noise includes: a gain acquisition unit that determines a gain and a correction value of the gain using a signal to noise ratio (SNR) of an input signal; and a gain application unit that acquires an output signal corresponding to the input signal using the determined gain and the determined correction value, wherein the output signal includes an input signal of which noise is eliminated and an input signal of which noise is not eliminated, and a proportion of the input signal of which noise is eliminated and a proportion of the input signal of which noise is not eliminated are determined according to the determined correction value.
    Type: Grant
    Filed: December 6, 2014
    Date of Patent: October 18, 2016
    Assignee: Hyundai Motor Company
    Inventors: Chang-Heon Lee, Hyunjin Yoon
  • Publication number: 20160148614
    Abstract: A speech recognition system includes a transfer function storage storing a vehicle transfer function, which represents an acoustic environment in a vehicle and frequency response characteristic of a microphone; a signal-to-noise ratio (SNR) estimator estimating an SNR of an input signal received from the microphone; a speech section determiner determining a speech section to which the vehicle transfer function is applied based on the SNR; a frequency pattern extractor extracting a feature pattern of the speech signal of which the frequency distortion is compensated; and a speech recognition engine recognizing a speech command by using the feature pattern.
    Type: Application
    Filed: November 17, 2015
    Publication date: May 26, 2016
    Inventors: Hyunjin YOON, Chang Heon LEE
  • Publication number: 20160111084
    Abstract: A speech recognition device includes: a collector collecting speech data of a first speaker from a speech-based device; a first storage accumulating the speech data of the first speaker; a learner learning the speech data of the first speaker accumulated in the first storage and generating an individual acoustic model of the first speaker based on the learned speech data; a second storage storing the individual acoustic model of the first speaker and a generic acoustic model; a feature vector extractor extracting a feature vector from the speech data of the first speaker when a speech recognition request is received from the first speaker; and a speech recognizer selecting either one of the individual acoustic model of the first speaker and the generic acoustic model based on an accumulated amount of the speech data of the first speaker and recognizing a speech command using the extracted feature vector and the selected acoustic model.
    Type: Application
    Filed: July 28, 2015
    Publication date: April 21, 2016
    Inventors: Kyuseop Bang, Chang Heon Lee
  • Publication number: 20160078856
    Abstract: An apparatus for eliminating noise includes: a gain acquisition unit that determines a gain and a correction value of the gain using a signal to noise ratio (SNR) of an input signal; and a gain application unit that acquires an output signal corresponding to the input signal using the determined gain and the determined correction value, wherein the output signal includes an input signal of which noise is eliminated and an input signal of which noise is not eliminated, and a proportion of the input signal of which noise is eliminated and a proportion of the input signal of which noise is not eliminated are determined according to the determined correction value.
    Type: Application
    Filed: December 6, 2014
    Publication date: March 17, 2016
    Inventors: Chang-Heon Lee, Hyunjin Yoon
  • Patent number: 9286888
    Abstract: A speech recognition system includes: a context storage medium storing a monosyllabic command context including a plurality of monosyllabic commands and storing a polysyllabic command context including a plurality of polysyllabic commands; a speech segment detector detecting a speech segment having a start point and an end point by analyzing a speech signal within the speech segment; a syllable determiner configured determining whether the speech signal corresponds to a monosyllabic form or a polysyllabic form; a feature vector extractor extracting a feature vector by analyzing the speech signal; and a speech recognizer selecting one of the monosyllabic command context and the polysyllabic command context according to the determination of whether the speech signal corresponds to the monosyllabic form or the polysyllabic form and recognizing at least one command in the selected one of the monosyllabic command context and the polysyllabic command context based on the extracted feature vector.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 15, 2016
    Assignee: Hyundai Motor Company
    Inventors: Chang Heon Lee, Kyuseop Bang
  • Publication number: 20160027436
    Abstract: A speech recognition device is configured to increase usability by retrying speech recognition without returning to a previous operation or a re-input of speech when a user's speech is misrecognized. The speech recognition device is further configured increase accuracy of recognition by changing a search environment when the user's speech is misrecognized or when re-recognition is performed since the recognized speech is rejected due to a low confidence. A vehicle includes a speech input device configured to receive speech; and a speech recognition device configured to recognize the received speech and output a recognition result of the received speech. The speech recognition device resets a recognition environment applied to speech recognition and re-recognizes the received speech when a re-recognition instruction is input by a user, and resets the reset recognition environment to an initial value when the re-recognition is completed.
    Type: Application
    Filed: December 5, 2014
    Publication date: January 28, 2016
    Inventors: Chang-Heon LEE, KyuSeop BANG
  • Patent number: 9214160
    Abstract: An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving, by an audio processing apparatus, an audio signal including a first data of a first block encoded with rectangular coding scheme and a second data of a second block encoded with non-rectangular coding scheme; receiving a compensation signal corresponding to the second block; estimating a prediction of an aliasing part using the first data; and, obtaining a reconstructed signal for the second block based on the second data, the compensation signal and the prediction of aliasing part.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: December 15, 2015
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Hyen-O Oh, Chang Heon Lee, Hong Goo Kang, Jung Wook Song
  • Patent number: 9163115
    Abstract: A polycarbonate of the present invention includes repeating units represented by, Formula 1, Formula 2 and Formula 3, respectively, and thus, may have excellent scratch resistance, chemical resistance and impact property.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 20, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Chang Heon Lee, Bok Nam Jang
  • Patent number: 9153238
    Abstract: The present invention relates to a method for processing an audio signal, comprising the following steps: performing a linear predictive analysis on the current frame of an audio signal so as to generate a first target vector, which is a target vector of a first stage, on the basis of a plurality of linear prediction transform coefficients; performing vector quantization on the first target vector so as to acquire a predetermined number of first temporary candidate code vectors of the first stage; calculating first temporary candidate errors, which are errors between the first temporary candidate code vectors and the first target vector; and determining a first number, which is the number of the first candidate code vectors, on the basis of the first temporary candidate errors, and acquiring first final candidate code vectors in the same amount as the first number.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: October 6, 2015
    Assignee: LG Electronics Inc.
    Inventors: Gyu Hyeok Jeong, Hye Jeong Jeon, Byung Suk Lee, Chang Heon Lee
  • Patent number: 9117458
    Abstract: A method of processing an audio signal is disclosed. The present invention includes a method for processing an audio signal, comprising: receiving, by an audio processing apparatus, the spectral data including a current block, and substitution type information indicating whether to apply a shape prediction scheme to a current block; when the substitution type information indicates that the shape prediction scheme is applied to the current block, receiving lag information indicating an interval between spectral coefficients of the current block and the predictive shape vector of a current frame or a previous frame; obtaining spectral coefficients by substituting for spectral hole included in the current block using the predictive shape vector.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: August 25, 2015
    Assignees: LG Electronics Inc., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Hyen-O Oh, Chang Heon Lee, Hong Goo Kang
  • Patent number: 9082399
    Abstract: An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving, by an audio processing apparatus, an audio signal including a first data of a first block encoded with rectangular coding scheme and a second data of a second block encoded with non-rectangular coding scheme; receiving a compensation signal corresponding to the second block; estimating a prediction of an aliasing part using the first data; and, obtaining a reconstructed signal for the second block based on the second data, the compensation signal and the prediction of aliasing part.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: July 14, 2015
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Hyen-O Oh, Chang Heon Lee, Hong Goo Kang, Jung Wook Song
  • Patent number: 9070364
    Abstract: An audio signal processing method is disclosed. The audio signal processing method includes receiving a residual and long term prediction information, performing inverse frequency mapping with respect to the residual to generate a synthesized residual, and performing long term synthesis based on the synthesized residual and the long term prediction information to generate a synthesized audio signal of a current frame, wherein the long term prediction information comprises a final prediction gain and a final pitch lag, the final pitch lag has a range starting with 0, and the long term synthesis is performed based on a synthesized audio signal of a frame comprising a preceding frame.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: June 30, 2015
    Assignees: LG Electronics Inc., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Hyen-O Oh, Chang Heon Lee, Jeongook Song, Yang Won Jung, Hong Goo Kang
  • Patent number: 9064490
    Abstract: An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving, by an audio processing apparatus, an audio signal including a first data of a first block encoded with rectangular coding scheme and a second data of a second block encoded with non-rectangular coding scheme; receiving a compensation signal corresponding to the second block; estimating a prediction of an aliasing part using the first data; and, obtaining a reconstructed signal for the second block based on the second data, the compensation signal and the prediction of aliasing part.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: June 23, 2015
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Hyen-O Oh, Chang Heon Lee, Hong Goo Kang, Jung Wook Song
  • Publication number: 20150094444
    Abstract: A polycarbonate of the present invention includes repeating units represented by, Formula 1, Formula 2 and Formula 3, respectively, and thus, may have excellent scratch resistance, chemical resistance and impact property.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 2, 2015
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Chang Heon Lee, Bok Nam Jang