Patents by Inventor Deok-In CHOI

Deok-In CHOI 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).

  • DEVICE AND METHOD FOR GENERATING IDENTIFICATION KEY
    Publication number: 20160225724
    Abstract: Provided is a device for generating an identification key using a process variation during a manufacturing process of a conductive layer. The device for generating an identification key may include a plurality of conductive layers designed so as to be formed in a first region within a semiconductor chip, the density in which the plurality of conductive layers are disposed in the first region being at least a first threshold value and not more than a second threshold value, the first and second threshold values being less than a minimum density according to the design rules for ensuring that all of the plurality of conductive layers are formed in the first region; and a reader which provides an identification key by identifying if, among the plurality of conductive layers, a previously designated first conductive layer has been formed.
    Type: Application
    Filed: February 17, 2014
    Publication date: August 4, 2016
    Inventors: Byong Deok Choi, Dong Kyue Kim
  • Power supply for television and television including the same
    Patent number: 9407855
    Abstract: Provided is a television apparatus including: a display panel which displays an image; a front cover which covers a front side of the television apparatus such that the display panel is exposed; a rear cover which is opposed to the front cover; a power supply which is supported between the front cover and the rear cover and includes an input connector mounted thereon to receive an input AC power for the display panel; an output connector configured to detachably coupled with the input connector to supply the input AC power, wherein the rear cover includes an inwardly-depressed portion at which a cover insertion hole is formed such that the output connector is coupled to the input connector through the cover insertion hole.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: August 2, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Young-deok Choi
  • APPARATUS AND METHOD FOR GENERATING PHYSICAL UNCLONABLE FUNCTION BY MODIFYING PHOTO MASK OF SEMICONDUCTOR PROCESS
    Publication number: 20160216605
    Abstract: Disclosed is a method of generating a physical unclonable function (PUF) by causing unpredictable partial process failure for a semiconductor process. In a designing process, a second mask pattern may be printed by distorting a size and/or shape of at least one mask window included in a designed first mask pattern, without violating semiconductor design rules. A PUF may be generated using a photomask including the printed second mask pattern for photolithography.
    Type: Application
    Filed: August 26, 2014
    Publication date: July 28, 2016
    Inventors: Byong Deok Choi, Dong Kyue Kim, Kwang Hyun Jee
  • DEVICE AND METHOD FOR GENERATING IDENTIFICATION KEY
    Publication number: 20160211232
    Abstract: Provided are a device and method for generating an identification key using process variation during a bipolar junction transistor (BJT) process. A BJT may be produced by designing such that the effective base width of the BJT is at least a first threshold value but not more than a second threshold value, or, such that the total of the width of a second depletion region formed by connection with a collector region and the width of a first depletion region formed by connection with an emitter region, within a base region, differs from the width of the base region by a value that is at least the first threshold value but not more than the second threshold value. Whether or not there is a short circuit between the emitter region and the collector region is stochastically generated, and if ordinary turn-on voltage is not applied, whether or not there is a short circuit is identified.
    Type: Application
    Filed: February 17, 2014
    Publication date: July 21, 2016
    Inventors: Byong Deok Choi, Dong Kyue Kim
  • DEVICE AND METHOD FOR GENERATING IDENTIFICATION KEY
    Publication number: 20160211231
    Abstract: Provided is a device for generating an identification key using a process variation during a manufacturing process of a conductive layer. The device for generating an identification key may include a conductive layer, which is disposed between a first node and a second node in a semiconductor chip, and which has a width that is at least a first threshold value but not more than a second threshold value, the first threshold value and the second threshold value being less than the minimum width according to the design rules that can ensure that the conductive layer is patterned such that the first node and the second node are electrically short-circuited, and a reader which provides an identification key by identifying if there is a short circuit between the first node and the second node.
    Type: Application
    Filed: February 17, 2014
    Publication date: July 21, 2016
    Inventors: Byong Deok Choi, Dong Kyue Kim
  • Encryption device and method for defending a physical attack
    Patent number: 9397826
    Abstract: Provided are a security device and a method for operating same. The security device may conceal an encryption key used for an encryption algorithm in an encryption module in correspondence to security attacks such as reading information on where the encryption key is stored in a memory by disassembling an IC chip, or extracting said information through microprobing. The encryption key may be included as a physical encryption key module in an encryption module, and a certain storage medium for storing the encryption key may be included in the encryption module. Accordingly, the encryption key is not transmitted via a bus in a security device for encryption.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: July 19, 2016
    Assignee: ICTK CO., LTD.
    Inventors: Dong Kyue Kim, Byong Deok Choi
  • INFORMATION SECURITY SYSTEM IN SMART MOBILE ENVIRONMENT
    Publication number: 20160205093
    Abstract: Provided is a security communication method of a terminal device. A first authentication unit of the terminal device identifies a first subscriber to connect a first communication network. A second authentication unit of the terminal device exclusively operates with the first authentication unit, and identifies a second subscriber to connect a second communication network which is different from the first communication network. When the second subscriber is identified, at least one external communication module of the terminal device can be inactive.
    Type: Application
    Filed: March 24, 2016
    Publication date: July 14, 2016
    Inventors: Dong Kyue Kim, Byong Deok Choi, Dong Hyun Kim, Sang Seon Park
  • APPARATUS AND METHOD FOR TESTING RANDOMNESS
    Publication number: 20160170856
    Abstract: A randomness testing apparatus is disclosed. A randomness testing apparatus according to an embodiment includes a randomness testing module to conduct a randomness test on physically unclonable function (PUF)-based hardware and a processing device to determine whether the PUF-based hardware is defective on the basis of a randomness test result.
    Type: Application
    Filed: July 28, 2014
    Publication date: June 16, 2016
    Inventors: Dong Kyue Kim, Byong Deok Choi, Kwang Hyun Jee
  • APPARATUS AND METHOD FOR GENERATING IDENTIFICATION KEY
    Publication number: 20160154979
    Abstract: Provided is an apparatus for generating an identification key by a probabilistic determination of a short occurring between nodes constituting a circuit, by violating a design rule provided during a semiconductor manufacturing process. The identification key generating apparatus may include an identification key generator to generate an identification key based on whether a contact or a via used to electrically connect conductive layers in a semiconductor chip shorts the conductive layers, and an identification key reader to read the identification key by reading whether the contact or the via shorts the conductive layers.
    Type: Application
    Filed: February 4, 2016
    Publication date: June 2, 2016
    Applicant: ICTK Co., LTD.
    Inventors: Dong Kyue KIM, Byong Deok CHOI, Tae Wook KIM
  • METHOD AND DEVICE FOR PROVIDING COMMUNICATION BETWEEN MULTI-DEVICES
    Publication number: 20160119257
    Abstract: A method of providing communication between a plurality of devices of a user without a dedicated server and a device capable of communicating with other devices by using the method are disclosed. The method includes generating a message to be sent to a second device and storing a channel file including message data in a predetermined space within a cloud server, which are performed by a first device, and accessing the cloud server and reading a channel file stored in a predetermined place within the cloud server, which are performed by the second device.
    Type: Application
    Filed: October 21, 2015
    Publication date: April 28, 2016
    Inventors: Jeong-hyun YUN, Kyung-ah CHANG, Jong-deok CHOI
  • Information security system in smart mobile environment
    Patent number: 9300650
    Abstract: Provided is a security communication method of a terminal device. A first authentication unit of the terminal device identifies a first subscriber to connect a first communication network. A second authentication unit of the terminal device exclusively operates with the first authentication unit, and identifies a second subscriber to connect a second communication network which is different from the first communication network. When the second subscriber is identified, at least one external communication module of the terminal device can be inactive.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: March 29, 2016
    Assignee: ICTK CO., LTD.
    Inventors: Dong Kyue Kim, Byong Deok Choi, Dong Hyun Kim, Sang Seon Park
  • Apparatus and method for generating identification key
    Patent number: 9292710
    Abstract: Provided is an apparatus for generating an identification key by a probabilistic determination of a short occurring between nodes constituting a circuit, by violating a design rule provided during a semiconductor manufacturing process. The identification key generating apparatus may include an identification key generator to generate an identification key based on whether a contact or a via used to electrically connect conductive layers in a semiconductor chip shorts the conductive layers, and an identification key reader to read the identification key by reading whether the contact or the via shorts the conductive layers.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: March 22, 2016
    Assignee: ICTK CO., LTD.
    Inventors: Dong Kyue Kim, Byong Deok Choi, Tae Wook Kim
  • Apparatus for Providing Puf-Based Hardware OTP and Method for Authenticating 2-Factor Using Same
    Publication number: 20160065378
    Abstract: Provided is an apparatus for generating a hardware-based OTP which is impossible to duplicate. The apparatus for generating the OTP can comprise a PUF for generating a unique PIN. In addition, provided is a method which is used for 2-Factor authentication with the apparatus for generating the OTP and existing secure elements.
    Type: Application
    Filed: January 16, 2014
    Publication date: March 3, 2016
    Inventors: Dong Kyue Kim, Byong Deok Choi, Dong Hyun KIM, Kwang Hyun Jee
  • DIGITAL COUNTER
    Publication number: 20160056824
    Abstract: A digital counter may include a first count unit suitable for outputting a first bit signal having a constant level in response to a first clock signal, a second count unit suitable for outputting a second bit signal having a constant level in response to a second clock signal, and a third count unit suitable for outputting a third bit signal toggling in response to the second clock signal, and performing a count operation.
    Type: Application
    Filed: December 8, 2014
    Publication date: February 25, 2016
    Inventors: Byong Deok CHOI, Jong Seok KIM, Don Ku LEE
  • Controlling brightness of lamp in display device
    Patent number: 9265123
    Abstract: A display device includes a lamp unit, a dimming signal controller, and an inverter device. The dimming signal controller receives a lamp brightness signal and an external environment illumination signal, selects the lamp brightness signal or a signal based on the received external environment illumination signal, and outputs the selected signal as a dimming signal. The inverter device may operate to control brightness of the lamp unit based on the dimming signal.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: February 16, 2016
    Assignee: ROHM CO., LTD.
    Inventors: Kwang-woo Nam, Jun-Deok Choi, Min-ki Ahn
  • METHOD AND APPARATUS FOR SHARING DATA
    Publication number: 20160036822
    Abstract: A relay server includes a storage configured to store first access right information of a first cloud storage service to which a first user is subscribed and second access right information of a second cloud storage service to which a second user is subscribed. The relay server further includes a communication interface configured to request, from the first cloud storage service, first data that is stored in the first cloud storage service, based on the first access right information, and receive the requested first data from the first cloud storage. The relay server further includes a controller configured to control the communication interface to store the received first data in the second cloud storage service, based on the second access right information.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 4, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-jin KIM, Kyung-ah CHANG, Jong-deok CHOI
  • SYSTEM FOR MANAGING IFC VERSION SYNCHRONIZED WITH BIM AND METHOD FOR MANAGING IFC VERSION THEREOF
    Publication number: 20150379063
    Abstract: The present invention relates to a system for managing IFC versions by comparing two or more IFC files produced with a time interval therebetween so as to trace the alteration history, and to a method for managing the IFC file version thereof. A system for managing the IFC versions includes: a comparison target processing unit for acquiring first IFC file attribute information concerning a first IFC file and second IFC file attribute information concerning at least one second IFC file; a GUID comparison engine for comparing a first IFC file GUID set containing first IFC GUIDs with a second IFC file GUID set containing second IFC GUIDs; and a spatial object comparison engine for comparing a first IFC file spatial object information set containing first IFC file spatial objects with a second IFC file spatial object information set containing second IFC file spatial objects.
    Type: Application
    Filed: January 16, 2013
    Publication date: December 31, 2015
    Inventors: Young Seok SOHN, Sang Deok CHOI
  • Digital counter
    Patent number: 9214944
    Abstract: A digital counter includes: a plurality of flip-flops configured to generate a plurality of count signals; and a controller configured to prevent level transition of an input terminal of a flip-flop to generate a count signal corresponding to a least significant bit (LSB), in response to a clock signal and a count end signal.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: December 15, 2015
    Assignee: SK Hynix Inc.
    Inventors: Sung Mook Kim, Byong Deok Choi, Jong Seok Kim
  • Power supply for television and television including the same
    Patent number: 9179088
    Abstract: A power supply for a television and a television including the same, the power supply including: a rectifier which rectifies input AC power; a converter which converts the rectified power into DC power through a switching control; a circuit board on which at least one of the rectifier and the converter is mounted; and an input connector which receives the AC power and is mounted on the circuit board such that a projecting height of the input connector projecting from the circuit board is substantially equal to or smaller than a projecting height of at least one of the rectifier and the converter.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: November 3, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Young-deok Choi
  • APPARATUS AND METHOD FOR GENERATING DIGITAL VALUE
    Publication number: 20150304115
    Abstract: Provided is an apparatus for generating a digital value that may generate a random digital value, and guarantee time invariance of the generated digital value. The apparatus may include a digital value generator to generate a random digital value using semiconductor process variation, and a digital value freezing unit that may be connected to the digital value generator and fixed to one of a first state and a second state based on the generated digital value, to freeze the digital value.
    Type: Application
    Filed: July 2, 2015
    Publication date: October 22, 2015
    Inventors: Tae Wook KIM, Dong Kyue KIM, Byong Deok CHOI