Patents by Inventor Suk Kyun Hong

Suk Kyun Hong 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: 10523416
    Abstract: A receiver performs independent packet detection using synchronization words with orthogonality when multiple signals on which frequency-shift keying is performed coexist. The receiver includes a frequency demodulator generating a quasi-amplitude modulation signal that has a value proportional to frequency shift from the first signal or second signal being received, a sign discriminator discriminating a sign of the generated quasi-amplitude modulation signal, and a multi-binary correlator calculating a first correlation value which is a binary correlation value between the discriminated sign and a first synchronization word and calculating a second correlation value which is a binary correlation value between the discriminated sign and a second synchronization word.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 31, 2019
    Assignee: ABOV Semiconductor co., Ltd.
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Patent number: 10511472
    Abstract: The present invention relates to a method of simultaneously performing packet detection, symbol timing acquisition, and carrier frequency offset estimation in parallel using multiple correlation detection and a Bluetooth apparatus using the same, in which the Bluetooth apparatus receiving a frequency modulated signal includes a frequency demodulating unit converting the received signal into a similar amplitude modulated signal; and multiple correlation detectors generating multiple correlation indices from the converted signal, on a basis of an access address received from a link layer and a plurality of carrier frequency offset search windows. According to the present invention, since packet detection, symbol timing acquisition and carrier frequency offset estimation are simultaneously performed in parallel in the relatively long access address reception interval instead of the short preamble signal reception interval.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 17, 2019
    Assignee: ABOV Semiconductor co., Ltd.
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Publication number: 20190207743
    Abstract: A receiver performs independent packet detection using synchronization words with orthogonality when multiple signals on which frequency-shift keying is performed coexist. The receiver includes a frequency demodulator generating a quasi-amplitude modulation signal that has a value proportional to frequency shift from the first signal or second signal being received, a sign discriminator discriminating a sign of the generated quasi-amplitude modulation signal, and a multi-binary correlator calculating a first correlation value which is a binary correlation value between the discriminated sign and a first synchronization word and calculating a second correlation value which is a binary correlation value between the discriminated sign and a second synchronization word.
    Type: Application
    Filed: October 10, 2018
    Publication date: July 4, 2019
    Applicant: ABOV Semiconductor co., Ltd.
    Inventors: Sang Young CHU, Ki Tae MOON, Suk Kyun HONG
  • Publication number: 20190166573
    Abstract: The present invention relates to a method of detecting an access address of a physical channel in a Bluetooth signal to which channel coding is applied, the method including: performing initial signal processing in a unit of a specific length in a preamble section of a Bluetooth signal; and performing channel decoding in the specific length for a preamble part remained after the initial signal processing, wherein the specific length is a bit pattern length of a bitstream which is repeated in the preamble section or a length of a bitstream input for channel decoding. According to the present invention, channel decoding is performed in a unit of a bit pattern length of an access address from the remaining preamble part, and thus detection of the access address is available even though a start point of the access address is not provided.
    Type: Application
    Filed: October 10, 2018
    Publication date: May 30, 2019
    Applicant: ABOV Semiconductor co., Ltd.
    Inventors: Ki Tae MOON, Sang Young CHU, Suk Kyun HONG
  • Publication number: 20190028316
    Abstract: The present invention relates to a method of simultaneously performing packet detection, symbol timing acquisition, and carrier frequency offset estimation in parallel using multiple correlation detection and a Bluetooth apparatus using the same, in which the Bluetooth apparatus receiving a frequency modulated signal includes a frequency demodulating unit converting the received signal into a similar amplitude modulated signal; and multiple correlation detectors generating multiple correlation indices from the converted signal, on a basis of an access address received from a link layer and a plurality of carrier frequency offset search windows. According to the present invention, since packet detection, symbol timing acquisition and carrier frequency offset estimation are simultaneously performed in parallel in the relatively long access address reception interval instead of the short preamble signal reception interval.
    Type: Application
    Filed: July 20, 2018
    Publication date: January 24, 2019
    Applicant: ABOV Semiconductor co., Ltd.
    Inventors: Sang Young Chu, Ki Tae MOON, Suk Kyun HONG
  • Publication number: 20190029023
    Abstract: Bluetooth apparatus includes a control unit and a Bluetooth communication unit. The control unit divides Bluetooth channels into divided groups including a first group, a second group, and a third group and selects one from among the divided groups. The Bluetooth communication unit uses channels included in the selected divided group, in which the selected divided group does not include a frequency band of a Wi-Fi channel in use.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 24, 2019
    Applicant: ABOV Semiconductor co., Ltd.
    Inventors: Ki Tae Moon, Sang Young Chu, Suk Kyun Hong
  • Patent number: 10015029
    Abstract: Disclosed herein are a Bluetooth signal receiving device and a Bluetooth Smart receiving method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a symbol timing offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift modulation on a received signal. The sampler circuit samples the baseband signal based on a symbol timing, and generates a plurality of series of bit streams based on sampled values. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The symbol timing offset compensation circuit compensates the symbol timing of the baseband signal based on a measured error metric as an effective error metric if the plurality of series of bit streams satisfies the training bit pattern condition.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: July 3, 2018
    Assignee: ABOV SEMICONDUCTOR CO., LTD.
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Patent number: 9954701
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method for receiving a Bluetooth signal. The Bluetooth signal receiving device includes a discriminator circuit and a correlator circuit. The discriminator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The correlator circuit detects a packet assigned to the Bluetooth signal receiving device by comparing the frequency proportion signal with an access address received from a link layer. The Bluetooth signal receiving device may detect a packet, assigned to the Bluetooth signal receiving device itself, by using access address information of a link layer.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: April 24, 2018
    Assignee: ABOV SEMICONDUCTOR CO., LTD.
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Patent number: 9912503
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a frequency offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The sampler circuit generates a plurality of series of bit streams from the frequency proportion signal. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: March 6, 2018
    Assignee: ABOV SEMICONDUCTOR CO., LTD.
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Patent number: 9831902
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes an energy detector circuit, a radio frequency (RF) power detector circuit, an analog-digital converter circuit, and an automatic gain control circuit. The energy detector circuit detects a significant signal, having energy higher than background noise by a threshold value or more, from a received signal. The RF power detector circuit detects the magnitude of the received signal. The analog-digital converter circuit converts the analog value of the received signal into a digital value, and outputs the digital value. When the significant signal is detected, the automatic gain control circuit determines any one of predetermined coarse gain intervals to be a first coarse gain interval of the received signal by taking into account the magnitude of the received signal detected by the RF power detection circuit.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: November 28, 2017
    Assignee: ABOV SEMICONDUCTOR CO., LTD.
    Inventors: Ki Tae Moon, Sang Young Chu, Suk Kyun Hong
  • Patent number: 9825791
    Abstract: Disclosed are a method and device for receiving a frequency-shift keying signal. The device for receiving a frequency-shift keying signal includes a front-end circuit, complex differential discriminators, and a recovery circuit. The front-end circuit receives a signal transmitted via a frequency-shift keying channel, and generates the baseband signal of the received signal. The complex differential discriminators have a plurality of orders and use the complex conjugate of the baseband signal of the received signal. The recovery circuit recovers symbols by applying a maximum likelihood sequence estimation (MLSE) technique to the output values of the complex differential discriminators having the plurality of orders.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: November 21, 2017
    Assignee: ABOV SEMICONDUCTOR CO., LTD.
    Inventors: Ki Tae Moon, Sang Young Chu, Suk Kyun Hong
  • Publication number: 20170195149
    Abstract: Disclosed are a method and device for receiving a frequency-shift keying signal. The device for receiving a frequency-shift keying signal includes a front-end circuit, complex differential discriminators, and a recovery circuit. The front-end circuit receives a signal transmitted via a frequency-shift keying channel, and generates the baseband signal of the received signal. The complex differential discriminators have a plurality of orders and use the complex conjugate of the baseband signal of the received signal. The recovery circuit recovers symbols by applying a maximum likelihood sequence estimation (MLSE) technique to the output values of the complex differential discriminators having the plurality of orders.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 6, 2017
    Inventors: Ki Tae Moon, Sang Young Chu, Suk Kyun Hong
  • Publication number: 20170195151
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a frequency offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The sampler circuit generates a plurality of series of bit streams from the frequency proportion signal. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 6, 2017
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Publication number: 20170195152
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method for receiving a Bluetooth signal. The Bluetooth signal receiving device includes a discriminator circuit and a correlator circuit. The discriminator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The correlator circuit detects a packet assigned to the Bluetooth signal receiving device by comparing the frequency proportion signal with an access address received from a link layer. The Bluetooth signal receiving device may detect a packet, assigned to the Bluetooth signal receiving device itself, by using access address information of a link layer.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 6, 2017
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Publication number: 20170195150
    Abstract: Disclosed herein are a Bluetooth signal receiving device and a Bluetooth Smart receiving method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a symbol timing offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift modulation on a received signal. The sampler circuit samples the baseband signal based on a symbol timing, and generates a plurality of series of bit streams based on sampled values. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The symbol timing offset compensation circuit compensates the symbol timing of the baseband signal based on a measured error metric as an effective error metric if the plurality of series of bit streams satisfies the training bit pattern condition.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 6, 2017
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Publication number: 20170194925
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes an energy detector circuit, a radio frequency (RF) power detector circuit, an analog-digital converter circuit, and an automatic gain control circuit. The energy detector circuit detects a significant signal, having energy higher than background noise by a threshold value or more, from a received signal. The RF power detector circuit detects the magnitude of the received signal. The analog-digital converter circuit converts the analog value of the received signal into a digital value, and outputs the digital value. When the significant signal is detected, the automatic gain control circuit determines any one of predetermined coarse gain intervals to be a first coarse gain interval of the received signal by taking into account the magnitude of the received signal detected by the RF power detection circuit.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 6, 2017
    Inventors: Ki Tae Moon, Sang Young Chu, Suk Kyun Hong
  • Patent number: 8887615
    Abstract: Disclosed is a firearm having dual barrels comprising a firearm body which is equipped with a small caliber barrel and a large caliber barrel; a selector installed on one side of the firearm body to select the type of bullet and the mode of firing; a fire control system installed on the firearm body to enable aiming the target through detecting the target both at day and night time; a firearm switch unit installed on the firearm body to transmit the information on the firing of the bullet; a fuse setter installed on the firearm body to transmit the control signal of the fire control system to the fuse of the explosive bullet which is introduced into the large caliber barrel; and a sensor device unit installed on the firearm body to transmit the position of the selector and sensed firing signal to the fire control system.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: November 18, 2014
    Assignee: Agency for Defense Development
    Inventors: In Woo Kim, Suk Kyun Hong, Sung Bae Lee, Eui Jung Choe, Je Wook Chae
  • Patent number: 8555767
    Abstract: An apparatus for collecting empty cannon cartridges a bracket spacedly disposed from one or more surfaces of a breech ring for accommodating a cannon barrel therein; an operation pin mounted to the breech ring adjacent to the bracket; an upper link rotatably mounted to one surface of the bracket, and configured to slidingy contact the operation pin; a lower link concentric with the upper link, rotatably mounted to one surface of the bracket, and rotating together with the upper link by being engaged with the upper link at a specific angle; and a collecting unit having one end connected to the lower link, and configured to be unfolded such that empty cartridges extracted from the cannon barrel are collected. When the cannon barrel moves forward, the lower link rotates by being engaged with the upper link as the operation pin slides on the upper link, and the collecting unit is unfolded such that the empty cartridges are collected.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: October 15, 2013
    Assignee: Agency for Defense Development
    Inventors: Sang-Tae Ahn, Kuk-Jeong Kang, Suk-Kyun Hong, Chul-Mo Yeo
  • Publication number: 20130160637
    Abstract: An apparatus for collecting an empty cartridge includes a bracket, an operation pin, an upper link, a lower link, and a collecting unit, wherein when a cannon barrel forward moves, the lower link rotates by being engaged with the upper link as the operation pin slides on the upper link, and the collecting unit is unfolded such that the empty cartridge is collected after a bump.
    Type: Application
    Filed: December 27, 2011
    Publication date: June 27, 2013
    Inventors: Sang-Tae AHN, Kuk-Jeong KANG, Suk-Kyun HONG, Chul-Mo YEO
  • Publication number: 20120233901
    Abstract: Disclosed is a firearm having dual barrels comprising a firearm body which is equipped with a small caliber barrel and a large caliber barrel; a selector installed on one side of the firearm body to select the type of bullet and the mode of firing; a fire control system installed on the firearm body to enable aiming the target through detecting the target both at day and night time; a firearm switch unit installed on the firearm body to transmit the information on the firing of the bullet; a fuse setter installed on the firearm body to transmit the control signal of the fire control system to the fuse of the explosive bullet which is introduced into the large caliber barrel; and a sensor device unit installed on the firearm body to transmit the position of the selector and sensed firing signal to the fire control system.
    Type: Application
    Filed: September 9, 2011
    Publication date: September 20, 2012
    Inventors: In Woo KIM, Suk Kyun HONG, Sung Bae LEE, Eui Jung CHOE, Je Wook CHAE