Patents by Inventor Ho YONG

Ho YONG 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: 20040190914
    Abstract: A burst mode optical receiver includes: a photodiode which converts an input optical signal into a current signal; a pre-amplifier which converts the current signal into a voltage signal; a single-to-differential converter which converts the single voltage signal output from the pre-amplifier into differential signals; a post amplifier which amplifies the differential signals and cancels an offset occurring during the amplification or offsets inherited from the differential signals; and a discriminator which discriminates data from the differential signals.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 30, 2004
    Inventors: Ho Yong Kang, Hyun Kyun Choi, Quan Le, Tae Whan Yoo, Hyeong Ho Lee, Sang Gug Lee, Man Seop Lee, Yong Hun Oh
  • Publication number: 20040190569
    Abstract: Provided are an apparatus for compensating for the characteristics of a laser diode and an optical transmitter including the apparatus. The apparatus includes: an optical output detector which detects an optical power output from the laser diode and converts the optical power into a voltage; a bias current controller which detects a maximum level of the voltage and outputs a first control value corresponding to a difference between the maximum level and a first reference voltage; a modulation current controller which detects a minimum level of the voltage and outputs a second control value corresponding to a difference between the minimum level and a second reference voltage; and a laser diode driver which outputs a drive current to the laser diode according to the first and second control values.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 30, 2004
    Inventors: Ho Yong Kang, Hyun Kyun Choi, Yong Hun Oh, Tae Whan Yoo, Hyeong Ho Lee, Sang Gug Lee, Man Seop Lee, Quan Le
  • Publication number: 20040169807
    Abstract: A liquid crystal display includes an array pixel including a plurality of pixels arranged in a matrix. The plurality of pixels include a set of pixels including a pair of center pixels adjacent to each other, and a pair of first-color pixels and a pair of second-color pixels obliquely facing each other across the center pixels. Each pixel includes a pixel electrode and a thin film transistor. The liquid crystal display further includes a plurality of gate lines extending in a row direction for transmitting a gate signal to the pixels, and a plurality of data lines extending in a column direction for transmitting data signals to the pixels. The pixels are subject to polarity inversion.
    Type: Application
    Filed: August 12, 2003
    Publication date: September 2, 2004
    Inventors: Soo-Guy Rho, Keun-Kyu Song, Jeong-Ye Choi, Nam-Seok Roh, Cheol-Woo Park, Mun-Pyo Hong, Ho-Yong Jeong
  • Publication number: 20040162417
    Abstract: The present invention relates to a protease, and more specifically to a protease derived from Aranicola proteolyticus, a gene coding for said enzyme, a gene expression system for said protease, a process for purifying the protease, and the uses of said protease in industrial applications, such as for example, detergents, cosmetics, leather processing agents, chemicals for laboratory research, solubilizing or softening agents for food, meat modifier, feed or food additives, or oil and fat separating agents, as well as pharmaceutical compositions.
    Type: Application
    Filed: October 3, 2001
    Publication date: August 19, 2004
    Inventors: Ho-Yong Park, Kwang-Hee Son, Doo-Sang Park, Sang-Woon Shin, Hyun-Woo Oh, Mi-Gwang Kim, Dong-Ha Shin
  • Patent number: 6758898
    Abstract: The invention relates to a method for growing single crystals of barium titanate [BaTiO3] and barium titanate solid solutions [(BaxM1−x)(TiyN1−y)O3]. This invention is directed to a method for growing single crystals of barium titanate or barium titanate solid solutions showing the primary and secondary abnormal grain growths with increasing temperature higher than the liquid formation temperature, characterized by comprising the step for a few secondary abnormal grains to continue to grow at a temperature slightly below the critical temperature where the secondary abnormal grain growth starts to occur. The method for growing single crystals of barium titanate or barium titanate solid solutions according to this invention has the advantage of providing an effective low cost in manufacturing process for single crystals by using a conventional heat-treatment process without the need of special equipment.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: July 6, 2004
    Assignee: Ceracomp Co. Ltd.
    Inventors: Ho-Yong Lee, Jao-Suk Kim, Jong-Bong Lee, Tae-Moo Hur, Doe-Yeon Kim, Nong-Moon Hwang, Byoung-Ki Lee, Sung-Yoon Chung, Suk-Joong L. Kang
  • Publication number: 20040114592
    Abstract: A communication node system for an Ethernet-PON includes: an LLID register for storing an LLID being an allocated identifier; a preamble generator for generating a PON preamble; a CRC generator for generating a CRC for the preamble; a transmission connector for combining transport data with the CRC-including preamble to generate a transport frame, and forwarding the transport frame; a reception connector for receiving the frame and dividing the frame into a preamble and received data; a filter for extracting an LLID from the preamble, comparing the extracted LLID with the LLID stored in the register, and selectively filtering the extracted LLID; and a received frame generator for discarding the received data, or combining the received data with the preamble to generate a received frame.
    Type: Application
    Filed: August 1, 2003
    Publication date: June 17, 2004
    Inventors: Ho-Yong Kang, Tae-Whan Yoo, Hyeong-Ho Lee
  • Publication number: 20040109450
    Abstract: Provided is a communication apparatus in a PON bridge sublayer, which supports point-to-point communications between optical network units (ONU) in an Ethernet passive optical network (EPON). To support point-to-point communications between ONUs in the EPON, the communication apparatus in the PON bridge sublayer includes a second processing portion, a second input queue, a second lookup and learning portion, a second output queue, a first input queue, a first lookup and learning portion, a filtering database table a VLAN ID table, a table control portion, a first output queue, and a first processing portion.
    Type: Application
    Filed: November 25, 2003
    Publication date: June 10, 2004
    Inventors: Ho Yong Kang, Tae Whan Yoo, Hyeong Ho Lee
  • Publication number: 20040008686
    Abstract: An apparatus for and a method of generating pointers for identifying structure boundaries of data for leased lines such as T1/E1 in an asynchronous transfer mode (ATM) adaptation layer Type 1 (AAL1) through an ATM layer.
    Type: Application
    Filed: September 20, 2002
    Publication date: January 15, 2004
    Inventors: Ho Yong Kang, Je Soo Ko, Tae Whan Yoo
  • Patent number: 6548011
    Abstract: A method of manufacturing an alumina-based ceramic includes sintering a powder compact of an iron-containing alumina powder in an atmosphere (N2, 95 N2-5 H2, H2) of a relatively low oxygen partial pressure, and annealing in an atmosphere (80 N2-20 O2, O2) higher in oxygen partial pressure than the sintering atmosphere to provide an alumina-based ceramic with a grain-boundary migration layer on a surface thereof. The resulting undulated grain boundaries on the surface layer suppress and deflect the crack propagation, thereby improving the short-crack toughness. The formation of a grain-boundary migration layer on the surface of an alumina-based ceramic brings about a great improvement in short-crack related properties, including durability and wear resistance.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: April 15, 2003
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Young Woo Rhee, Ho Yong Lee, Suk Joong Kang
  • Publication number: 20030018610
    Abstract: A method and an apparatus for managing a vast amount of file in a portable device. The file management apparatus of the portable device includes a disk engine which reads attribute information of a file recorded in a recording medium, an input unit which inputs a command for editing the stored attribute information, a controller which controls the portable device to record/reproduce the file corresponding to the read attribute information, and a display unit which displays the attribute information to allow an user to edit the attribute information. The attribute of the file recorded in the recording medium can be edited by an editing command, and each file is processed in accordance with the attribute information. Accordingly, the user can easily manage the vast amount of information.
    Type: Application
    Filed: April 19, 2002
    Publication date: January 23, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ho-Yong Ryu
  • Publication number: 20030015130
    Abstract: The invention relates to a method for growing single crystals of barium titanate [BaTiO3] and barium titanate solid solutions [(BaxM1-x)(TiyN1-y)O3]. This invention is directed to a method for growing single crystals of barium titanate or barium titanate solid solutions showing the primary and secondary abnormal grain growths with increasing temperature higher than the liquid formation temperature, characterized by comprising the step for a few secondary abnormal grains to continue to grow at a temperature slightly below the critical temperature where the secondary abnormal grain growth starts to occur. The method for growing single crystals of barium titanate or barium titanate solid solutions according to this invention has the advantage of providing an effective low cost in manufacturing process for single crystals by using a conventional heat-treatment process without the need of special equipment.
    Type: Application
    Filed: June 7, 2002
    Publication date: January 23, 2003
    Applicant: CERACOMP CO. LTD.
    Inventors: Ho-Yong Lee, Jae-Suk Kim, Jong-Bong Lee, Tae-Moo Hur, Doe-Yeon Kim, Nong-Moon Hwang, Byoung-Ki Lee, Sung-Yoon Chung, Suk-Joong L. Kang
  • Patent number: 6482259
    Abstract: The invention relates to a method for growing single crystals of barium titanate [BaTiO3] and barium titanate solid solutions [(BaxM1-x)(TiyN1-y)O3]. This invention is directed to a method for growing single crystals of barium titanate or barium titanate solid solutions showing the primary and secondary abnormal grain growths with increasing temperature higher than the liquid formation temperature, characterized by comprising the step for a few secondary abnormal grains to continue to grow at a temperature slightly below the critical temperature where the secondary abnormal grain growth starts to occur. The method for growing single crystals of barium titanate or barium titanate solid solutions according to this invention has an advantage to provide an effective low cost in manufacturing process for single crystals by using usual heat-treatment process without special equipments.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: November 19, 2002
    Assignee: Ceracomp Co., Ltd.
    Inventors: Ho-Yong Lee, Jae-Suk Kim, Jong-Hong Lee, Tae-Moo Hur, Doe-Yeon Kim, Nong-Moon Hwang, Byoung-Ki Lee, Sung-Yoon Chung, Suk-Joong L. Kang
  • Patent number: 6358464
    Abstract: A method for making a BaTiO3-based dielectric having a high dielectric constant and a low dielectric loss wherein, a BaTiO3-based body is subjected to a pre-heat treatment in a hydrogen (H2) atmosphere or a reducing atmosphere containing mixed gas of hydrogen and nitrogen in a ratio of hydrogen:nitrogen=5 to 100%:0 to 95% prior to a sintering process in the manufacture of dielectrics, in order to obtain a reduced average grain size of BaTiO3. By virtue of the reducing average grain size of BaTiO3, a BaTiO3-based dielectric having a high dielectric constant and a low dielectric loss is obtained.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: March 19, 2002
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Byung Kee Lee, Yang Il Jung, Ho Yong Lee, Suk-Joong Kang, Sung Yoon Chung
  • Patent number: 6048394
    Abstract: A method is disclosed for forming a single crystal relaxor based material, including the following steps: providing a seed single crystal plate, providing a first and second polycrystalline structure, bonding the top surface of the seed crystal plate to the outer surface of the first polycrystalline structure, bonding the bottom surface of the seed crystal plate to the outer surface of the second polycrystalline structure, and annealing the bonded structure.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: April 11, 2000
    Assignee: Competitive Technologies of PA, Inc.
    Inventors: Martin P. Harmer, Helen M. Chan, Ho-Yong Lee, Adam M. Scotch, Tao Li, Frank Meschke, Ajmal Khan
  • Patent number: 5371541
    Abstract: A superimpose control device which enables a superimpose function even in a VTR mode, by using a phase convening circuit for synchronizing the phase of a sub-carrier signal with the color burst signal of an applied video signal.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: December 6, 1994
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho-yong Yu