Patents by Inventor Hae-Yong Yang

Hae-Yong Yang 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: 20190115671
    Abstract: Various examples are provided that are related to fractal-based reactive impedance surfaces. These surfaces allow for miniaturization of antennas. In one example, a fractal rectangular reactive impedance surface (FR-RIS) includes a plurality of fractal rectangular (FR) patches having an outer edge defined by a fractal rectangular pattern that is repeated along each side of inner FR patches of the plurality of FR patches. The fractal rectangular pattern of a FR patch matches with the fractal rectangular pattern of an adjacent FR patch. An antenna can include a planar antenna disposed over the FR-RIS.
    Type: Application
    Filed: April 14, 2017
    Publication date: April 18, 2019
    Applicants: University of Florida Research Foundation, Inc., Electronics and Telecommunications Research Institute (ETRI)
    Inventors: YONG KYU YOON, SEAHEE HWANGBO, HAE YONG YANG
  • Patent number: 9778367
    Abstract: An anti-jamming apparatus and method for a compact array antenna are provided. The anti-jamming apparatus for a compact array antenna includes a Global Navigation Satellite System (GNSS) array antenna unit including a plurality of GNSS antennas for receiving GNSS signals transmitted from a satellite. A first beam-forming unit includes a plurality of combination units for receiving respective signals received by the plurality of GNSS antennas as a first reference signal and first auxiliary signals and combining the first reference signal with the first auxiliary signals, thus forming different beams. A second beam-forming unit receives signals of the different beams, and combining the signals of the different beams, thus forming an anti-jamming beam in which an invisible area is minimized.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: October 3, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jinchun Wang, Dae Heon Lee, Dong Hoon Shin, Woong Hee Kim, Hae Yong Yang, Eungki Park
  • Patent number: 9658340
    Abstract: A method and apparatus for measuring the synthetic reception pattern of an adaptive array antenna, which are divided into a hardware apparatus and a measurement method. The hardware apparatus includes a wavefront simulator, a GNSS simulator, an external controller, a signal measurement unit, and a GNSS receiver. The measurement method using the hardware apparatus includes setting a direction of arrival of jamming and calculating a weight vector, fixing weight vectors at the calculated weight vector and collecting outputs of an array antenna system for all test signals, and displaying the collected data on a grid of a 2D plane. In accordance with the present invention, a weight vector calculated under a specific jamming situation is maintained for all test signals, so that the synthetic reception pattern of the array antenna system can be measured.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: May 23, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dong Hoon Shin, Woong Hee Kim, Jinchun Wang, Dae Heon Lee, Hae Yong Yang, Inho Hwang, Chun Soo Kim
  • Patent number: 9634397
    Abstract: An ultra-wideband tapered slot antenna that is capable of providing spatial independent band-stop characteristics which are irrelevant to the radiation direction of the antenna in a dual-stop band. The antenna includes an ultra-wideband tapered slot antenna includes a radiating unit formed on a first surface of a substrate and configured to radiate radio signals. A feeding unit is formed on a second surface of the substrate and is configured to provide the radio signals to the radiating unit. Separate stubs are formed to be spaced apart from the feeding unit around the feeding unit and are configured to reject frequencies in a first stop band from the radio signals radiated from the radiating unit. A slot is formed in a stub formed at a first end of the feeding unit and is configured to reject frequencies in a second stop band from the radio signals.
    Type: Grant
    Filed: November 22, 2014
    Date of Patent: April 25, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dae Heon Lee, Hae Yong Yang
  • Publication number: 20150364827
    Abstract: An ultra-wideband tapered slot antenna that is capable of providing spatial independent band-stop characteristics which are irrelevant to the radiation direction of the antenna in a dual-stop band. The antenna includes an ultra-wideband tapered slot antenna includes a radiating unit formed on a first surface of a substrate and configured to radiate radio signals. A feeding unit is formed on a second surface of the substrate and is configured to provide the radio signals to the radiating unit. Separate stubs are formed to be spaced apart from the feeding unit around the feeding unit and are configured to reject frequencies in a first stop band from the radio signals radiated from the radiating unit. A slot is formed in a stub formed at a first end of the feeding unit and is configured to reject frequencies in a second stop band from the radio signals.
    Type: Application
    Filed: November 22, 2014
    Publication date: December 17, 2015
    Inventors: Dae Heon LEE, Hae Yong YANG
  • Publication number: 20150301185
    Abstract: A method and apparatus for measuring the synthetic reception pattern of an adaptive array antenna, which are divided into a hardware apparatus and a measurement method. The hardware apparatus includes a wavefront simulator, a GNSS simulator, an external controller, a signal measurement unit, and a GNSS receiver. The measurement method using the hardware apparatus includes setting a direction of arrival of jamming and calculating a weight vector, fixing weight vectors at the calculated weight vector and collecting outputs of an array antenna system for all test signals, and displaying the collected data on a grid of a 2D plane. In accordance with the present invention, a weight vector calculated under a specific jamming situation is maintained for all test signals, so that the synthetic reception pattern of the array antenna system can be measured.
    Type: Application
    Filed: August 26, 2014
    Publication date: October 22, 2015
    Inventors: Dong Hoon SHIN, Woong Hee KIM, Jinchun WANG, Dae Heon LEE, Hae Yong YANG, Inho HWANG, Chun Soo KIM
  • Patent number: 9105092
    Abstract: In order for registration of images for surgery, first, a three-dimensional reference image of a surgical area of a patient before surgery is acquired. Then, a grating-pattern light is provided towards the surgical area to acquire a first measurement image. Thereafter, a preliminary registration is performed between the acquired first measurement image and a pre-acquired three-dimensional reference image. Then, a grating-pattern light is provided towards the surgical area after cutting out the surgical area to acquire a second measurement image. Thereafter, a fine registration is performed between the acquired second measurement image and the pre-acquired three-dimensional reference image based on the preliminary registration result. Thus, an accurate registration result may be acquired at low cost in a short period of time.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: August 11, 2015
    Assignee: KOH YOUNG TECHNOLOGY INC.
    Inventors: Hyun-Ki Lee, Hae-Yong Yang, Young-Sik Kwon, Nozomu Matsumoto
  • Publication number: 20150130678
    Abstract: The present invention relates to a multi-band Global Navigation Satellite System (GNSS) fixed reception pattern antenna apparatus, which can mitigate interference signals using spatial filtering by optimizing the radiation pattern of an antenna. The multi-band GNSS fixed reception pattern antenna apparatus includes a broadband antenna radiator for receiving at least two types of GNSS signals, and a plurality of partition walls for enclosing the antenna radiator around the antenna radiator. Heights and intervals of each of the plurality of partition walls are independent of frequencies of signals desired to be blocked.
    Type: Application
    Filed: September 11, 2014
    Publication date: May 14, 2015
    Inventors: Dae Heon LEE, Dong Hoon SHIN, Jinchun WANG, Hae Yong YANG, Inho HWANG, Chun Soo KIM
  • Publication number: 20140375500
    Abstract: An anti-jamming apparatus and method for a compact array antenna are provided. The anti-jamming apparatus for a compact array antenna includes a Global Navigation Satellite System (GNSS) array antenna unit including a plurality of GNSS antennas for receiving GNSS signals transmitted from a satellite. A first beam-forming unit includes a plurality of combination units for receiving respective signals received by the plurality of GNSS antennas as a first reference signal and first auxiliary signals and combining the first reference signal with the first auxiliary signals, thus forming different beams. A second beam-forming unit receives signals of the different beams, and combining the signals of the different beams, thus forming an anti-jamming beam in which an invisible area is minimized.
    Type: Application
    Filed: May 22, 2014
    Publication date: December 25, 2014
    Inventors: Jinchun WANG, Dae Heon LEE, Dong Hoon SHIN, Woong Hee KIM, Hae Yong YANG, Eungki PARK
  • Patent number: 8896479
    Abstract: A Global Positioning System (GPS) signal reception apparatus including a GPS antenna unit, a GPS signal selection unit, and a jamming signal detection unit is provided. The GPS antenna unit includes a first-type antenna and a plurality of second-type antennas which have directivities different from each other. The GPS signal selection unit selects any one of the first-type antenna and the plurality of second-type antennas as a selected antenna. The jamming signal detection unit detects a jamming signal present in a GPS signal by analyzing the GPS signal which is received via the selected antenna.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 25, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin-Chun Wang, Dong-Hoon Shin, Ui-Jung Kim, Dae-Heon Lee, Hae-Yong Yang, Seong-Taek Chee
  • Publication number: 20140226886
    Abstract: In order for registration of images for surgery, first, a three-dimensional reference image of a surgical area of a patient before surgery is acquired. Then, a grating-pattern light is provided towards the surgical area to acquire a first measurement image. Thereafter, a preliminary registration is performed between the acquired first measurement image and a pre-acquired three-dimensional reference image. Then, a grating-pattern light is provided towards the surgical area after cutting out the surgical area to acquire a second measurement image. Thereafter, a fine registration is performed between the acquired second measurement image and the pre-acquired three-dimensional reference image based on the preliminary registration result. Thus, an accurate registration result may be acquired at low cost in a short period of time.
    Type: Application
    Filed: October 26, 2012
    Publication date: August 14, 2014
    Applicant: KOH YOUNG TECHNOLOGY INC.
    Inventors: Hyun-Ki Lee, Hae-Yong Yang, Young-Sik Kwon, Nozomu Matsumoto
  • Publication number: 20140139394
    Abstract: An ultra-wideband (UWB) antenna having a frequency band notch function is provided. The UWB antenna includes a substrate, a radiation part, a feeding part, and a slot. The radiation part is formed on one surface of the substrate, and radiates radio signals. The feeding part is formed on the other surface of the substrate, and feeds electric signals to the radiation part. The slot is formed in a stub formed at one end of the feeding part, and rejects frequencies in a notch band in the radio signals that are radiated by the radiation part.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 22, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dae-Heon LEE, Hae-Yong YANG, Ui-Jung KIM
  • Publication number: 20130106640
    Abstract: A Global Positioning System (GPS) signal reception apparatus including a GPS antenna unit, a GPS signal selection unit, and a jamming signal detection unit is provided. The GPS antenna unit includes a first-type antenna and a plurality of second-type antennas which have directivities different from each other. The GPS signal selection unit selects any one of the first-type antenna and the plurality of second-type antennas as a selected antenna. The jamming signal detection unit detects a jamming signal present in a GPS signal by analyzing the GPS signal which is received via the selected antenna.
    Type: Application
    Filed: December 15, 2011
    Publication date: May 2, 2013
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jin-Chun WANG, Dong-Hoon SHIN, Ui-Jung KIM, Dae-Heon LEE, Hae-Yong YANG, Seong-Taek CHEE
  • Patent number: 7953222
    Abstract: Provided are a method and apparatus for partially encrypting speech packets, more specifically, a method and apparatus for selecting partial encryption sets used for a partial encryption technique in which compressed speech packets are partially encrypted to obtain the same effect as a full encryption technique. The method includes the steps of: (a) compressing respective speech files stored in a large-capacity speech database into the speech packets using a speech codec; (b) measuring single-bit loss distortion and sequential-bit loss distortion of the speech packets compressed in step (a); (c) generating standards for selecting partial encryption sets based on the measurement results of the single-bit loss distortion and sequential-bit loss distortion; (d) selecting the partial encryption sets according to the generated standards; and (e) encrypting the speech packets using the selected partial encryption sets.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: May 31, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hae Yong Yang, Kyung Hoon Lee, Sang Han Lee
  • Publication number: 20090113220
    Abstract: An encrypted backup data storage device and a storage system using the same are provided. A backup memory stores at least one of plain-text data and a secret key. A leakage current blocking circuit includes at least one inverter and a complementary metal oxide semiconductor (CMOS) NAND gate circuit and cuts off leakage current paths formed by the lines connected to the battery backup memory.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 30, 2009
    Inventors: Sang Han LEE, Hae Yong YANG, Tae Joo CHANG, Choon Soo KIM
  • Publication number: 20090041231
    Abstract: Provided are a method and apparatus for partially encrypting speech packets, more specifically, a method and apparatus for selecting partial encryption sets used for a partial encryption technique in which compressed speech packets are partially encrypted to obtain the same effect as a full encryption technique. The method includes the steps of: (a) compressing respective speech files stored in a large-capacity speech database into the speech packets using a speech codec; (b) measuring single-bit loss distortion and sequential-bit loss distortion of the speech packets compressed in step (a); (c) generating standards for selecting partial encryption sets based on the measurement results of the single-bit loss distortion and sequential-bit loss distortion; (d) selecting the partial encryption sets according to the generated standards; and (e) encrypting the speech packets using the selected partial encryption sets.
    Type: Application
    Filed: March 11, 2008
    Publication date: February 12, 2009
    Inventors: Hae Yong YANG, Kyung Hoon LEE, Sang Han LEE
  • Publication number: 20070061137
    Abstract: A method for recovering a frame erasure at a voice over internet protocol (VoIP) environment is provided. The method includes: extracting coder parameters of received packets; if an erased packet exists during the extracting of the coder parameters, regenerating speech characteristic parameters of the erased packet by referencing a vector quantization codebook index interpolation table (VCIIT) formulated based on representative values of speech characteristic parameters reflecting auditory recognition characteristics and performing a linear interpolation on speech characteristic parameters of the normally received packets allocated previous and future of the erased packet; and recovering the erased packet by combining the regenerated speech characteristic parameters. The proposed frame erasure recovery method can minimize an additional delay and increases in bandwidth and computation and improve a capability of recovering the erasure.
    Type: Application
    Filed: December 15, 2005
    Publication date: March 15, 2007
    Inventors: Hae Yong Yang, Jeong Seok Lim, Kyung Hoon Lee, Sang Kyung Yoo
  • Patent number: 6771967
    Abstract: The present invention is about a method for assigning channels in a mobile communication system, having the function to analyze the marginal resources according to each operation mode and thereby to maximize the efficiency of a multi-channel DSP. The present invention includes the steps of: a) checking what an input call is among the three modes of vocoding, bypass and data service; b) deciding whether there is a usable channel for the same mode as the input call requires; c) if there is a usable channel for the same mode as the input call requires, assigning the input call to a dedicated channel for the same mode as the input call requires; and d) if there is no usable channel for the same mode as the input call requires, assigning the input call to a complex channel in case that there is a usable complex channel.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: August 3, 2004
    Assignee: Hyundai Electronics Industries
    Inventor: Hae-Yong Yang
  • Publication number: 20010014609
    Abstract: The present invention is about a method for assigning channels in a mobile communication system, having the function to analyze the marginal resources according to each operation mode and thereby to maximize the efficiency of a multi-channel DSP. The present invention includes the steps of: a) checking what an input call is among the three modes of vocoding, bypass and data service; b) deciding whether there is a usable channel for the same mode as the input call requires; c) if there is a usable channel for the same mode as the input call requires, assigning the input call to a dedicated channel for the same mode as the input call requires; and d) if there is no usable channel for the same mode as the input call requires, assigning the input call to a complex channel in case that there is a usable complex channel.
    Type: Application
    Filed: December 22, 2000
    Publication date: August 16, 2001
    Applicant: Hyundai Electronics Industries Co., Ltd.
    Inventor: Hae-Yong Yang