Patents by Inventor In-Joon Cho

In-Joon Cho 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: 20090285194
    Abstract: An efficient peak cancellation method for reducing the peak-to-average power ratio in wideband communication systems uses repeated clipping and frequency domain filtering to achieve a desired peak-to-average power ratio for wideband code division multiple access and orthogonal frequency division multiplexing signals. The maximum magnitude of the filtered pulse is determined by a scaling factor which permits eliminating several iterations while still achieving convergence to the targeted peak-to-average power ratio, thereby reducing computational load and saving hardware resources. This results in improved performance in terms of error vector magnitude, adjacent channel leakage ratio and peak-to-average power ratio.
    Type: Application
    Filed: March 31, 2009
    Publication date: November 19, 2009
    Applicant: DALI SYSTEMS CO. LTD.
    Inventors: Wan Jong Kim, Kyoung Joon Cho, Jong Heon Kim, Shawn Patrick Stapleton
  • Publication number: 20090263670
    Abstract: The present invention provides a method of producing a planar lipid bilayer on a solid support. With this method, a solution of lipid vesicles is first deposited on the solid support. Next, the lipid vesicles are destabilized by adding an amphipathic peptide solution to the lipid vesicle solution. This destabilization leads to production of a planar lipid bilayer on the solid support. The present invention also provides a supported planar lipid bilayer, where the planar lipid bilayer is made of naturally occurring lipids and the solid support is made of unmodified gold or titanium oxide. Preferably, the supported planar lipid bilayer is continuous. The planar lipid bilayer may be made of any naturally occurring lipid or mixture of lipids, including, but not limited to phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinsitol, cardiolipin, cholesterol, and sphingomyelin.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 22, 2009
    Inventors: Nam-Joon Cho, Curtis W. Frank
  • Patent number: 7586712
    Abstract: A method of and an apparatus for detecting an actuator vibration, and a hard disc drive write control method of avoiding an effect due to the actuator vibration. The method of detecting an actuator vibration includes: obtaining a specified number of position error signal (PES) samples while following a track; performing a time-frequency conversion on the specified number of PES samples; and detecting a magnitude of a conversion coefficient indicating a magnitude of an actuator vibration, in a specified frequency band.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: September 8, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung-Joon Cho, Jao-hyeong Kim
  • Patent number: 7570968
    Abstract: Disclosed is an apparatus for determining transmit power of an uplink frame transmitted from a subscriber station to a base station and transmitting data in a mobile communication system in which a downlink frame, transmitted from the base station to the subscriber station, and the uplink frame are time division-duplexed (TDD). The apparatus includes a receive power measurement unit for measuring receive power of signals received from the base station; a transmit power controller for determining the transmit power of the uplink frame from the receive power measured by the receive power measurement unit and information related to receptions of an uplink frame, which is received from the base station; and a transmission radio frequency processor for performing radio processing so that the uplink frame is transmitted according to the transmit power determined by the transmit power controller.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: August 4, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hoon Huh, Jae-Weon Cho, Sie-Joon Cho, Soon-Young Yoon, Jin-Weon Chang
  • Publication number: 20090180207
    Abstract: A method of controlling auto reassign of a hard disk drive, including measuring a position error signal (PES) value from at least one sample track of a disk when a fault is generated in a recording and reproduction process of the hard disk drive, comparing the measured PES value and a process PES value of the at least one sample track, and determining whether the hard disk drive is abnormally operated under a particular condition in which a normal operation is not achieved and whether the execution of auto reassign is to be performed.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 16, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Hyung Joon CHO
  • Patent number: 7561373
    Abstract: Provided is a method of compensating for a bias for efficient servo control of a hard disk drive, and optimally compensating for bias force based on the elapsed usage time of a hard disk drive, and a bias force profile generation method, recording media, and a hard disk drive appropriate to the bias compensation method. The bias compensation method for compensating for a bias force applied to a magnetic head of a hard disk drive includes: measuring the bias force at the current position of a head; selecting a bias force profile having a bias force similar to the bias force measured at the current position of the head, from among a plurality of bias force profiles that are obtained by measuring bias forces of a disc from based on the elapsed usage time of the hard disk drive; and compensating for the bias force according to the selected bias force profile.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: July 14, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyung-joon Cho
  • Publication number: 20090148710
    Abstract: Provided is a laminated ceramic package. The laminated ceramic package includes a laminated ceramic substrate having a conductive pattern therein, a first ceramic layer on the laminated ceramic substrate, and a second ceramic layer on the first ceramic layer. The first ceramic layer has a firing area shrinkage rate of about 1% or less. The second ceramic layer has a cavity receiving electronic components and a different firing shrinkage rate from the first ceramic layer.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 11, 2009
    Inventors: Beom Joon Cho, Jong Myeon Lee
  • Publication number: 20090142582
    Abstract: There is provided a constraining green including a first constraining layer having a surface disposed on the one of the top and bottom surfaces of the ceramic laminated body, the first constraining layer containing a first inorganic powder; and a second constraining layer disposed on a top of the first constraining layer and containing a second inorganic powder and a fly ash. The constraining green sheet serves to ensure less shrinkage of the ceramic laminated body and improve debinding characteristics.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Inventors: Beom Joon CHO, Jong Myeon LEE
  • Publication number: 20090141427
    Abstract: Provided are a dielectric composition and a multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate using the same. The dielectric composition includes a main component, BaTiO3 of about 80 wt % or more, and an accessory component, CuBi2O4 and ZnO—B2O3—SiO2-based glass of about 20 wt % or less.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Inventors: Soo Hyun Lyoo, Jong Myeon Lee, Ho Sung Choo, Min Ji Ko, Beom Joon Cho, Myung Whun Chang
  • Publication number: 20090133806
    Abstract: There is provided a method of manufacturing a dielectric sheet and a multilayer ceramic substrate. A method of manufacturing a dielectric sheet according to an aspect of the invention may include: forming an embossed pattern formed of a thermoplastic material on a carrier film; forming a dielectric sheet by casting dielectric slurry onto the carrier film to cover the embossed pattern; removing the carrier film and the embossed pattern to leave an intaglio pattern having the shape corresponding to the embossed pattern on the dielectric sheet; and filling the intaglio pattern of the dielectric sheet with a conductive material. According to an aspect of the invention, a method of manufacturing a dielectric sheet and a multilayer ceramic substrate that can prevent the generation of irregularities when a dielectric sheet having an intaglio electrode pattern printed thereon is laminated to a multilayer substrate can be provided.
    Type: Application
    Filed: November 28, 2008
    Publication date: May 28, 2009
    Inventors: Ho Sung CHOO, Soo Hyun LYOO, Myung Whun CHANG, Beom Joon CHO
  • Publication number: 20090135542
    Abstract: Provided are a glass composition, a dielectric composition and a multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate using the same. The multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate is sinterable at a low temperature while showing a high dielectric constant. The glass composition includes a composition component expressed by a composition formula of aBi2O3-bB2O3-cSiO2-dBaO-eTiO2, where a+b+c+d+e=100, and a, b, c, d, and e are 40?a?89, 10?b?50, 1?c?20, O?d?10, and O?e?10, respectively.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 28, 2009
    Inventors: Ho Sung Choo, Jong Myeon Lee, Eun Tae Park, Myung Whun Chang, Soo Hyun Lyoo, Beom Joon Cho
  • Publication number: 20090130473
    Abstract: Provided is a carrier film for forming a ceramic green sheet. The carrier film includes a film-type base material for fabricating the ceramic green sheet, a binder layer disposed on the film-type base material, the binder layer being formed of a binder resin, and a delamination layer disposed on a bottom surface of the carrier film, the delamination layer being formed of a resin having a releasing property. Also, provided is a method for fabricating a ceramic green sheet. The method includes preparing a carrier film for forming the ceramic green sheet including a binder layer, coating a ceramic slurry onto the carrier film, and drying the coated ceramic slurry to form the ceramic green sheet.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 21, 2009
    Inventors: Beom Joon CHO, Jong Myeon LEE, Soo Hyun LYOO, Ho Sung CHOO
  • Patent number: 7535860
    Abstract: Disclosed is a method for transmitting a pilot symbol from base stations (BSs) to a subscriber station (SS) in a communication system which includes the base stations located adjacent to each other, the method includes the steps of transmitting BS-identifying sub-carriers which represent sequences for identifying the base stations in a frequency domain of the pilot symbol; and transmitting PAPR (Peak to Average Power Ratio) sub-carriers which represent sequences for reducing a PAPR of the pilot symbol together with the transmission of the BS-identifying sub-carriers in the frequency domain.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Eun Park, Seung-Hoon Choi, Dong-Seek Park, Jae-Yoel Kim, Sung-Ryul Yun, Sie-Joon Cho, Jae-Weon Cho, Chi-Woo Lim
  • Publication number: 20090117357
    Abstract: There is provided a hard-to-sinter constraining green sheet and a method of manufacturing a multilayer ceramic substrate using the same. The hard-to-sinter constraining green sheet disposed at least one of top and bottom surfaces of a non-sintered multi-layer ceramic substrate, the hard-to-sinter constraining green sheet including: a first constraining layer having a surface to be positioned on the multi-layer ceramic substrate, the first constraining layer including a first organic binder and a first inorganic binder having a spherical shape or a quasi-spherical shape; and a second constraining layer bonded to a top surface of the first constraining layer and including a second organic binder and a second inorganic powder having a flake shape, the second constraining layer having a powder packing density lower than a powder packing density of the first constraining layer.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 7, 2009
    Applicant: SAMSUNG ELECTRO-MECHANICS CO.,LTD.
    Inventors: Beom Joon CHO, Jong Myeon Lee, Myung Whun Chang
  • Publication number: 20090110893
    Abstract: Provided are a constraining green sheet and a method of manufacturing a multi-layer ceramic substrate using the same. The constraining green sheet includes a first constraining layer and a second constraining layer. The first constraining layer has a side to be disposed on a multi-layer ceramic laminated structure and is formed of a first inorganic powder having a first particle diameter. The second constraining layer is disposed on the top of the first constraining layer and is formed of a second inorganic powder having a second particle diameter larger than the first particle diameter. Thus, a shrinkage suppression rate can be increased and a de-binder passage can be secured in a firing process of the ceramic laminated structure by using the constraining green sheet formed of inorganic powders that are different in terms of density and particle diameter.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 30, 2009
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Beom Joon Cho, Jong Myeon Lee, Ho Sung Choo
  • Publication number: 20090105151
    Abstract: The invention features methods and compositions that exploit the ability of amphipathic alpha-helical (AH) peptides to cause disruption of lipid-containing vesicles, such as enveloped viruses, in a size-dependent manner.
    Type: Application
    Filed: July 14, 2008
    Publication date: April 23, 2009
    Inventors: Jeffrey Glenn, Nam-Joon Cho, Curtis W. Frank, Kwang Ho Cheong
  • Patent number: 7515562
    Abstract: Disclosed is an apparatus and method for allocating downlink/uplink subchannels for a soft handover in a broadband wireless access communication system, wherein the method includes the steps of configuring FUSC subchannels based on a predetermined FUSC subchannel configuration scheme by using an equal seed value in all cells; allocating a predetermined number of FUSC subchannels of the configured FUSC subchannels as soft handover subchannels; and allocating remaining subchannels, except for the FUSC subchannels allocated as the first subchannels, as non-soft handover subchannels based on the FUSC subchannel configuration scheme by using a specific seed value.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: April 7, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Chi-Woo Lim, Pan-Yuh Joo, Sie-Joon Cho, Jae-Weon Cho, Young-Bin Chang
  • Publication number: 20090054477
    Abstract: The present invention relates to 4-thio substituted quinoline and naphthyridine derivatives and processes for their preparation. The invention also related to methods for treating infection of Hepatitis C virus by administering a 4-thio substituted quinoline or naphthyridine derivative.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Zhen Yang, Reza Fathi, Qiang Zhu, Hyun-Joon Cho, Yixin Liu, Anthony Sandrasagra, C. Richard Wobbe
  • Publication number: 20090041723
    Abstract: Aryl substituted pyrazole derivatives are provided, as well as processes for their preparation. The invention also provides compositions and methods for the treatment of HCV by administering a compound of the present invention, alone or in combination with additional antiviral agents, in a therapeutically effective amount.
    Type: Application
    Filed: October 15, 2007
    Publication date: February 12, 2009
    Inventors: Guolin Li, Reza Fathi, Zhen Yang, Yun Liao, Qiang Zhu, Angela Man Iu Lam, Anthony Sandrasagra, Kenneth Nawoschik, Hyun-Joon Cho, Jie Cao, Wu Rouqiu, C. Richard Wobbe
  • Patent number: 7489658
    Abstract: A dual stack mobile communication system is provided for building a single interworking network of an asynchronous network and a synchronous network. A single node is formed by combining the same kind nodes of the asynchronous network and the synchronous network, wherein the single node searches information for generating two output signal points according to a synchronous protocol and an asynchronous protocol in one input signal point according to the synchronous protocol or asynchronous protocol, and generates one output signal point.
    Type: Grant
    Filed: December 28, 2002
    Date of Patent: February 10, 2009
    Assignee: SK Telecom Co., Ltd.
    Inventors: Soo-Jin Kim, Hyung-Joon Cho, Hee-Hyeok Hahm, Sang-Yun Lee