Patents by Inventor Hyun Chul Park

Hyun Chul Park 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: 20100126873
    Abstract: The present invention relates to a manufacturing method of a three dimensional structure having a hydrophobic inner surface. The manufacturing method includes anodizing a three dimensional metal member and forming fine holes on an external surface of the metal member, forming a replica by coating a non-wetting polymer material on the outer surface of the metal member and forming the non-wetting polymer material to be a replication structure corresponding to the fine holes of the metal member, forming an exterior by surrounding the replication structure with an exterior forming material, and etching the metal member and eliminating the metal member from the replication structure and the exterior forming material.
    Type: Application
    Filed: March 12, 2008
    Publication date: May 27, 2010
    Applicant: Postech Academy-Industry Foundation
    Inventors: Dong-Seob Kim, Dong-Hyun Kim, Woon-Bong Hwang, Hyun-Chul Park, Kun-Hong Lee, Geun-Bae Lim, Sang-Min Lee, Joon-Won Kim
  • Publication number: 20100101568
    Abstract: The present invention relates to an inhalation anesthetic device whereby a patient inhales an anesthetic gas and is smoothly anesthetized. The present invention provides an inhalation anesthetic device that includes an inflatable member that inflates when a gas flows therein, an inhaling pipe through which the gas passes and that is connected to the inflatable member, and a gas container that contains an anesthetic gas and is connected to the inhaling pipe. According to the present invention, a patient is smoothly anesthetized while inflating an inflatable member.
    Type: Application
    Filed: December 1, 2008
    Publication date: April 29, 2010
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Hyun-Chul Park, Yeong-Ho Jang, Kyeng-Ho Hwang, Hun-Kee Lee
  • Publication number: 20100063519
    Abstract: The present invention relates to a suture device for a surgical operation that makes it easy to suture a wound or an incision. A suture device for a surgical operation of the present invention includes: a suture needle that is curved with a needle eye at one end to be threaded with a first suture, and swings at an incision; a holder that supplies a second suture, rotates in one direction, and stops, corresponding to the swing of the suture needle to weave the first suture and the second suture and suture the incision; a first rotary member that is connected to a first shaft of the suture needle; a second rotary member that is connected to a second shaft of the holder; and a third rotary member that is provided between the first rotary member and the second rotary member, and connected to a third shaft to transmit torque to the second rotary member.
    Type: Application
    Filed: September 8, 2009
    Publication date: March 11, 2010
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Hyun-Chul Park, Young-Ho Jang, Kyeng-Ho Hwang, Hun-Kee Lee
  • Patent number: 7663434
    Abstract: The present invention relates to the construction of output stage of the Doherty amplifier and comprises a main amplifying unit, an auxiliary amplifying unit and a compact ?/4 line connecting two amplifying units. The compact ?/4 line connecting two amplifying units includes a first parallel capacitor grounded by being connected to the main amplifying unit in parallel; a second parallel capacitor grounded by being connected to the auxiliary amplifying unit in parallel; and an inductor or a microstrip transmission line connecting the main amplifying unit and the auxiliary amplifying unit. The Doherty amplifier in accordance with the present invention further comprises a matching network unit connecting to a final output by connecting the main amplifying unit and the auxiliary amplifying unit and; and a ?/4 line used as the voltage inputs of the main amplifying unit and the auxiliary amplifying unit.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: February 16, 2010
    Assignee: Sungkyunkwan University
    Inventors: Youngoo Yang, Hyun-Chul Park, Sung-Chan Jung
  • Publication number: 20100028615
    Abstract: A method of processing a superhydrophobic surface and a solid body having the superhydrophobic surface processed by the method are provided. The method includes orienting a spray nozzle of a particle sprayer toward a surface of a metal body, operating the particle sprayer to forming micro-scale protrusions and depressions on the surface of the metal body by spraying particles to the surface of the metal body, forming a plurality of nano-scale holes on the surface of the metal body by treating the metal body through an anodic oxidation process, forming a replica by immersing the metal body in a non-wetting polymer material and solidifying the non-wetting polymer material, and forming a superhydrophobic dual-scaled surface structure having nano-scale pillars formed on micro-scale protrusions and depressions by removing the metal body and an anodic oxide from the replica.
    Type: Application
    Filed: July 5, 2007
    Publication date: February 4, 2010
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Woon-Bong Hwang, Kun-Hong Lee, Joon-Won Kim, Hyun-Chul Park, Dong-Hyun Kim
  • Patent number: 7646248
    Abstract: Disclosed is a Doherty amplifier including a carrier amplifier to perform a signal amplification operation regardless of a level of an input signal, a peaking amplifier to perform an amplification operation, starting from a high power output where a level of an input signal is equal to or greater than a predetermined level, an output combination circuit to combine and output the outputs of the carrier amplifier and the peaking amplifier, and an input division circuit to divide an input signal into the carrier amplifier and the peaking amplifier, the Doherty amplifier including a carrier amplifier output harmonic impedance tuning network installed at a rear end of the carrier amplifier to tune an output harmonic impedance of the carrier amplifier, and a peaking amplifier output harmonic impedance tuning network installed at a rear end of the peaking amplifier to tune an output harmonic impedance of the peaking amplifier.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: January 12, 2010
    Assignee: Sungkyunwan University Foundation for Corporate Collaboration
    Inventors: Youngoo Yang, Xi Yao, Hyun Chul Park, Sung Wook Kwon
  • Publication number: 20090317590
    Abstract: A method of processing a superhydrophobic surface and a solid body having the superhydrophobic surface processed by the method are provided. The method forming a plurality of nano-scale holes having nano-scale diameter on a surface of a metal body through an anode oxidation process, forming a replica by immersing the metal body provided with the nano-scale holes in a hydrophobic polymer material and solidifying the hydrophobic polymer material, and forming the superhydrophobic surface by removing the metal body with an anode oxide. The solid body includes a base, and a surface structure having micro-scale unevenness formed by a plurality of bunches formed by a plurality of adjacent pillars that are formed on the base and have a nano-scale diameter.
    Type: Application
    Filed: July 5, 2007
    Publication date: December 24, 2009
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Woon-Bong Hwang, Kun-Hong Lee, Dong-Hyun Kim, Hyun-Chul Park
  • Publication number: 20090260702
    Abstract: The present invention relates to a method for manufacturing a solid body having a superhydrophobic surface structure formed by using a surface treatment of a metal body, a replication process, and a polymer sticking phenomenon to increase efficiency of fluid transfer and prevent foreign materials from being accumulated in the tube, and a superhydrophobic fluid transfer tube using the method. The superhydrophobic fluid transfer tube includes a fluid guider and a solid body provided on a fluid contact surface of the fluid guider and has micrometer-scaled unevenness and nanometer-scaled protrusions.
    Type: Application
    Filed: September 19, 2007
    Publication date: October 22, 2009
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Dong-Hyun Kim, Sang-Min Lee, Il-Sin Bae, Dong-Seob Kim, Duk-Hyun Choi, Chang-Woo Lee, Ji-Hoon Jeon, Seong-Ho Son, Tae-Chul Moon, Woon-Bong Hwang, Joon-Won Kim, Hyun-Chul Park, Kun-Hong Lee
  • Publication number: 20090167438
    Abstract: Disclosed is a Doherty amplifier which includes a carrier amplifier for always performing a signal amplification operation regardless of a level of an input signal, a peaking amplifier for performing an amplification operation, starting from a high power output where a level of an input signal is equal to or greater than a predetermined level, an output combination circuit for combining and outputting outputs of the carrier amplifier and the peaking amplifier, and an input division circuit for dividing an input signal into the carrier amplifier and the peaking amplifier, the Doherty amplifier including a carrier amplifier output harmonic impedance tuning network which is installed at a rear end of the carrier amplifier so as to tune an output harmonic impedance of the carrier amplifier, and a peaking amplifier output harmonic impedance tuning network which is installed at a rear end of the peaking amplifier so as to tune an output harmonic impedance of the peaking amplifier.
    Type: Application
    Filed: February 20, 2008
    Publication date: July 2, 2009
    Applicant: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Youngoo Yang, Xi Yao, Hyun Chul Park, Sung Wook Kwon
  • Publication number: 20090119490
    Abstract: An instruction scheduling method and a processor using an instruction scheduling method are provided. The instruction scheduling method includes selecting a first instruction that has a highest priority from a plurality of instructions, and allocating the selected first instruction and a first time slot to one of the functional units, allocating a second instruction and a second time slot to one of the functional units, wherein the second instruction is dependent on the first instruction.
    Type: Application
    Filed: March 20, 2008
    Publication date: May 7, 2009
    Inventors: Taewook Oh, Hong-Seok Kim, Scott Mahlke, Hyun Chul Park
  • Publication number: 20090102553
    Abstract: The present invention relates to the construction of output stage of the Doherty amplifier and comprises a main amplifying unit, an auxiliary amplifying unit and a compact ?/4 line connecting two amplifying units. The compact ?/4 line connecting two amplifying units includes a first parallel capacitor grounded by being connected to the main amplifying unit in parallel; a second parallel capacitor grounded by being connected to the auxiliary amplifying unit in parallel; and an inductor or a microstrip transmission line connecting the main amplifying unit and the auxiliary amplifying unit. The Doherty amplifier in accordance with the present invention further comprises a matching network unit connecting to a final output by connecting the main amplifying unit and the auxiliary amplifying unit and; and a ?/4 line used as the voltage inputs of the main amplifying unit and the auxiliary amplifying unit.
    Type: Application
    Filed: January 30, 2008
    Publication date: April 23, 2009
    Inventors: Youngoo Yang, Hyun-Chul Park, Sung-Chan Jung
  • Publication number: 20080308752
    Abstract: A UV (Ultra Violet) trans-illuminator includes a UV irradiating unit composed of a plurality of CCFLs (Cold Cathode Fluorescent Lamps) or EEFLs (External Electrode Fluorescent Lamps) arranged at intervals of 1.0 cm to 3.0 cm and having a diameter of 3 mm to 8 mm so as to irradiate UV rays from an upper surface thereof, and a light dispersing unit disposed at a distance of 1 cm to 7 cm from the upper surface of the UV irradiating unit and dispersing the UV rays irradiated from the UV irradiating unit. This UV trans-illuminator has a slim design, excellent uniformity and small elapsed time change.
    Type: Application
    Filed: October 10, 2007
    Publication date: December 18, 2008
    Applicant: C-to-C Co., Ltd.
    Inventor: Hyun-Chul Park
  • Publication number: 20070281636
    Abstract: Provided is a transmitter for a multi-input multi-output system including: a memory for storing a modulation system and power allocation coefficient for each antenna; a modulating unit for modulating data to be transmitted using the modulation system for each antenna stored in the memory when the data to be transmitted is input; and a power adjusting unit for adjusting the power according to the power allocation coefficient for each antenna stored in the memory to transmit the data to be transmitted, modulated at the modulating unit, via a corresponding antenna. A higher performance gain can be provided compared to a conventional open loop V-BLAST system by using a different modulation system and power for each antenna of a transmitter.
    Type: Application
    Filed: April 24, 2007
    Publication date: December 6, 2007
    Inventors: Tae Joon KIM, Ik Soo EO, Hyoun Kuk KIM, Hyun Chul PARK
  • Publication number: 20070162940
    Abstract: A method of playing images on a portable electronic device is disclosed to include the steps of: providing a portable electronic device that comprises a display device, a browser program, a USB port, a USB OTG module, and a memory, and said browser program includes an editing function; connecting a digital camera device to said portable electronic device, and said digital camera device comprises a display device, a USB port, and a memory; thereby said USB OTG module detects whether or not said memory of said digital camera device includes a multimedia file; if yes, then call said browser program and display said multimedia file on said display device; and a user using said editing function to operate said multimedia file on said portable electronic device. The present invention also relates to a portable electronic device, which can control playing images of a digital camera device on the portable electronic device.
    Type: Application
    Filed: December 15, 2006
    Publication date: July 12, 2007
    Inventors: Sung-Min Pae, Hyun Chul Park
  • Publication number: 20050145774
    Abstract: The present invention relates to an apparatus and a method for operating and controlling a display and a backlight in the portable terminals, and more particularly, to an apparatus and a method for controlling the backlight and the display without a key input. The present invention the steps of: generating a sensing signal and transmitting the sensing signal to a control means, wherein the sensing signal is issued by an action taken by a user; receiving the sensing signal in the control means and generating a control signal; and turning on a backlight in response to the control signal. Accordingly, an unnecessary key input is removed in turning on the backlight and in rotating the output pattern of the phone.
    Type: Application
    Filed: June 10, 2004
    Publication date: July 7, 2005
    Inventors: Ki-Gon Yang, Jeffrey-Han Kang, Ki-Yeong Shin, Hyun-Chul Park
  • Publication number: 20050064912
    Abstract: The present invention relates to a portable terminal, such a hand-held phone, a smart phone or a PDA (personal digital assistant); and more particularly, to a portable terminal providing various vibrations for a user in response to different input event thereof. The portable terminal according to the present invention has a receiver for receiving a calling signal and external signals; a feature extractor for extracting a feature of the calling signal or the external signals; and only one vibration motor having an eccentrically balanced weight which is fixed at an end of the axis thereof, wherein the one vibration motor and the eccentrically balanced weight are controlled by a control signal from the Feature extractor and wherein the control signal is issued by the an extracted feature of the external signals. Although the present invention uses only one vibration motor, a behavior of the phone may have different vibration traces.
    Type: Application
    Filed: August 6, 2004
    Publication date: March 24, 2005
    Inventors: Ki-Gon Yang, Jeffrey-Han Kang, Ki-Yeong Shin, Hyun-Chul Park
  • Publication number: 20020022566
    Abstract: The present invention relates in general to alkali free grass, and more particularly, to alkali free glass available for use in various kinds of displaying devices including a TFT-LCD and a photo mask. The present invention is alkali free glass comprised, in weight percent, of about 57-61% SiO2, 16-18% Al2O3, 8-11% B2O3, 3-4.5% CaO, 1-5% SrO, 5-8% BaO, 0.1-3% ZnO, being substantially free from alkali metallic oxides and MgO.
    Type: Application
    Filed: July 5, 2001
    Publication date: February 21, 2002
    Inventors: Hyun-chul Park, Chan-Yun Hwang
  • Patent number: 6002942
    Abstract: A method for controlling a transmitting power of a mobile station radio communicating with a base station is disclosed including the step of: adjusting the transmitting power of the mobile station by use of an average value of a power strength received over a predetermined period during communication, a transmitting power of the base station analyzed from a packet which is transmitted from the base station, and a transmitting power determined by a desired receiving power of the base station.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: December 14, 1999
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Hyun-Chul Park
  • Patent number: 5633630
    Abstract: Disclosed is a watchdog circuit of a vehicle tracking system for resetting a microcomputer by sensing a transmission time longer than a predetermined time owing to a false operation of a vehicle mounted equipment in case of transmitting a position signal, and for preventing a malfunction of a vehicle tracking system.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: May 27, 1997
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Hyun-Chul Park
  • Patent number: 5263182
    Abstract: A system for receiving the satellite broadcasting signal which amplifies all signals within 10.95-12.5 GHz by use of a single low-noise wide-band amplifier, selects one of two local oscillators having frequencies of 10 GHz and 10.75 GHz according to a FSS/BSS Fixed Satellite Service/Broadcasting Satellite Service (FSS/BSS) selection control signal by use of the two local oscillators, and amplifies the signals of 0.95-1.75 GHz band in an IF amplifier, whereby all the satellite broadcasting signals of the FSS/BSS bands can be received by using a single low-noise block converter instead of using double low-noise block converters.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: November 16, 1993
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Hyun-Chul Park