Patents by Inventor Chan-woo Park

Chan-woo 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).

  • Method for interworking with dummy device and electronic device thereof
    Patent number: 9100541
    Abstract: An operation method of an electronic device that is operable with a dummy device is provided. The method includes operating the dummy device through a physical coupling to the electronic device, establishing, by the electronic device, a wireless connection with the dummy device if a call is received by the electronic device, and operating the electronic device with the dummy device through the wireless connection.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: August 4, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-Hoi Kim, Jin Park, Chan-Woo Park
  • METHOD FOR DISPLAYING AND AN ELECTRONIC DEVICE THEREOF
    Publication number: 20150185968
    Abstract: According to various exemplary embodiments, a screen output method performed in an electronic device may include detecting a transformation of the electronic device. The screen output method also includes detecting a transformation of the electronic device. The screen output method also includes if the transformation satisfies a pre-defined condition, controlling an output screen. Other exemplary embodiments are also possible.
    Type: Application
    Filed: December 24, 2014
    Publication date: July 2, 2015
    Inventors: Hoi-Taek Kim, Sin-Won Kang, Eung-Kwun Kim, Chan-Woo Park, Ki-Won Lee
  • APPARATUS AND METHOD OF DRIVING PIEZOELECTRIC ACTUATOR
    Publication number: 20150188022
    Abstract: An apparatus for driving a piezoelectric actuator may include a waveform synthesizing unit outputting a digital signal by using a preset lookup table, a digital to analog converting unit outputting at least one of a symmetrical waveform or an asymmetrical waveform by converting the digital signal, and a controlling unit controlling an output of the asymmetrical waveform by controlling an output of the digital to analog converting unit in response to an external input.
    Type: Application
    Filed: April 7, 2014
    Publication date: July 2, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joo Yul Ko, Chan Woo Park
  • APPARATUS AND METHOD OF DRIVING PIEZOELECTRIC ACTUATOR, AND PIEZOELECTRIC SYSTEM USING THE SAME
    Publication number: 20150188021
    Abstract: An apparatus for driving a piezoelectric actuator may include a waveform synthesizing unit outputting a digital value using waveform information input from the outside, an amplifying unit amplifying an analog value corresponding to the digital value, a voltage supplying unit generating an amplified voltage by amplifying an external input voltage and providing the amplified voltage to the amplifying unit, and a stabilization controlling unit determining whether the amplified voltage is stabilized and controlling the waveform synthesizing unit so as to output the digital value in the case in which the amplified voltage is stabilized.
    Type: Application
    Filed: April 7, 2014
    Publication date: July 2, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joo Yul Ko, Chan Woo Park
  • LOW-DROPOUT REGULATOR, POWER MANAGEMENT SYSTEM, AND METHOD OF CONTROLLING LOW-DROPOUT VOLTAGE
    Publication number: 20150177758
    Abstract: A low-dropout regulator comprises an analog-to-digital converter that converts a feedback analog voltage signal into a digital signal, a phase synthesizing unit that generates a first control signal having a pulse width corresponding to error information in the digital signal by performing phase synthesis according to clock skew control, a charge pump circuit that selects a charge loop or a discharge loop based on polarity information in the digital signal, and generates an output control voltage according to current that flows during a period corresponding to the pulse width of the first control signal in the selected loop, and an output circuit that generates an output voltage based on an input voltage and the output control voltage, and generates the feedback analog voltage signal based on the output voltage.
    Type: Application
    Filed: November 29, 2014
    Publication date: June 25, 2015
    Inventors: JE-KOOK KIM, SANG-YONG PARK, CHAN-WOO PARK, YOUNG-HOON LEE, BYEONG-HA PARK
  • Digital to-analog conversion apparatuses and methods
    Patent number: 9065478
    Abstract: A digital-to-analog conversion apparatus to convert a digital signal to an output analog voltage signal includes an analog-to-digital conversion processing circuit and an analog voltage signal output circuit. The analog-to-digital conversion processing circuit is configured to increase a resolution of the digital-to-analog conversion apparatus without increasing a frequency of an input clock signal. The analog voltage signal output circuit is configured to generate the output analog voltage signal based on the input clock signal at the increased resolution of the digital-to-analog conversion apparatus.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: June 23, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Je-kook Kim, Sang-yong Park, Chan-woo Park, Young hoon Lee, Byeong-ha Park
  • LIGHT EMITTING DIODE DRIVING APPARATUS AND LIGHT EMITTING DIODE LIGHTING APPARATUS
    Publication number: 20150173149
    Abstract: There are provided a light emitting diode (LED) driving apparatus and an LED lighting apparatus, in which a common detection resistor detecting a current flowing in each LED is used. According to exemplary embodiments of the present disclosure, manufacturing costs and a circuit area may be reduced by commonly using a common detection resistor detecting a current flowing in each of the LEDs.
    Type: Application
    Filed: June 3, 2014
    Publication date: June 18, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Deuk Hee PARK, Chan Woo PARK, Yun Joong LEE, Jong Tae HWANG, Je Hyeon YU, Soo Hyun MOON, Hye Jin LEE, Chang Seok LEE, Sang Hyun CHA
  • STRETCHABLE DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20150173186
    Abstract: Provided is a stretchable devices. The stretchable device includes a first stretchable substrate having a first wavy surface that wrinkles in a first direction; first wiring lines extending along the first wavy surface in the first direction; a second stretchable substrate having a second wavy surface that faces the first wavy surface and wrinkles in a second direction intersecting the first direction, wherein the second stretchable substrate is disposed on the first stretchable substrate; second wiring lines extending along the second wavy surface in the second direction; and interlayer insulating layers disposed on the intersections of the first wiring lines and the second wiring lines and disposed between the first wiring lines and the second wiring lines.
    Type: Application
    Filed: May 16, 2014
    Publication date: June 18, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Bock Soon NA, Soon-Won JUNG, Jae Bon KOO, Chan Woo PARK, Sang Chul LIM, Sang Seok LEE, Kyoung Ik CHO, Hye Yong CHU
  • APPARATUS AND METHOD FOR GENERATING SINUSOIDAL WAVES, AND SYSTEM FOR DRIVING PIEZOELECTRIC ACTUATOR USING THE SAME
    Publication number: 20150168990
    Abstract: An apparatus for generating sinusoidal waves may include a look-up table storage unit storing a look-up table including a plurality of sampling points determined based on a base frequency and a sampling frequency, a sinusoidal wave generation unit calculating an integer ratio of the target frequency to the base frequency and loading sampling points from the look-up table by reflecting the integer ratio, to generate a sinusoidal wave, a voltage step-up unit providing a stepped-up voltage to the sinusoidal wave generation unit, and a correction control unit sensing the stepped-up voltage from the voltage step-up unit and performing controlling so that the sampling points are corrected in the case that a level of the stepped-up voltage does not meet a predetermined requirement.
    Type: Application
    Filed: April 8, 2014
    Publication date: June 18, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chan Woo PARK, Joo Yul KO
  • METHOD FOR FABRICATING FLEXIBLE DISPLAY
    Publication number: 20150171354
    Abstract: Provided is a method for fabricating a flexible display device. The method includes attaching a shape memory alloy film memorizing a shape thereof as a curved shape at a shape memory temperature or lower to a flexible substrate at a temperature higher than the shape memory temperature, forming a display device on the flexible substrate, and returning the shape memory alloy to the curved shape to remove the shape memory alloy film from the flexible substrate.
    Type: Application
    Filed: May 17, 2014
    Publication date: June 18, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang Seok LEE, Kyoung Ik CHO, Bock Soon NA, Sang Chul LIM, Chan Woo PARK, Soon-Won JUNG, Jae Bon KOO, Hye Yong CHU
  • METHOD OF MANUFACTURING FLEXIBLE SUBSTRATE ALLOWING ELECTRONIC DEVICE TO BE MOUNTED THERETO
    Publication number: 20150159266
    Abstract: Provided is a method of manufacturing a flexible substrate allowing an electronic device to be mounted thereto. The method of manufacturing a flexible substrate allowing an electronic device to be mountable thereto, includes preparing a substrate, applying a force to the substrate to stretch the substrate in horizontal direction, performing a surface treatment process on the substrate and forming a first region having a plurality of wavy surfaces, and forming an electrode on the first region.
    Type: Application
    Filed: May 20, 2014
    Publication date: June 11, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang Chul LIM, Jae Bon KOO, Chan Woo PARK, Soon-Won JUNG, Bock Soon NA, Sang Seok LEE, Kyoung Ik CHO, Hye Yong CHU
  • DIGITAL-TO-ANALOG CONVERSION APPARATUSES AND METHODS
    Publication number: 20150162934
    Abstract: A digital-to-analog conversion apparatus to convert a digital signal to an output analog voltage signal includes an analog-to-digital conversion processing circuit and an analog voltage signal output circuit. The analog-to-digital conversion processing circuit is configured to increase a resolution of the digital-to-analog conversion apparatus without increasing a frequency of an input clock signal. The analog voltage signal output circuit is configured to generate the output analog voltage signal based on the input clock signal at the increased resolution of the digital-to-analog conversion apparatus.
    Type: Application
    Filed: November 21, 2014
    Publication date: June 11, 2015
    Inventors: Je-kook KIM, Sang-yong PARK, Chan-woo PARK, Young hoon LEE, Byeong-ha PARK
  • METHOD OF FABRICATING ELECTRONIC CIRCUIT
    Publication number: 20150147854
    Abstract: Provided is a method of fabricating an electronic circuit. The method includes preparing a substrate, forming a polymer film on the substrate, patterning the polymer film to form a polymer pattern, and forming an electronic device on the polymer pattern.
    Type: Application
    Filed: April 22, 2014
    Publication date: May 28, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Soon-Won JUNG, Jae Bon KOO, Chan Woo PARK, Bock Soon NA, Sang Chul LIM, Sang Seok LEE, Kyoung Ik CHO, Hye Yong CHU
  • Stretchable electronic device and method of manufacturing same
    Patent number: 9040337
    Abstract: Provided are a stretchable electronic device and a method of manufacturing the same. The manufacturing method includes forming coil interconnection on a first substrate, forming a first stretchable insulating layer that covers the coil interconnection, forming a second substrate on the first stretchable insulating layer, separating the first substrate from the coiling interconnection and the first stretchable insulating layer, and forming a transistor on the coil interconnection.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 26, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chan Woo Park, Jae Bon Koo, Sang Chul Lim, Ji-Young Oh, Soon-Won Jung
  • MICROANALYSIS METHODS AND SYSTEMS USING FIELD EFFECT TRANSISTOR
    Publication number: 20150132186
    Abstract: Provided is a microanalysis method and system using a Field Effect Transistor (FET). The microanalysis method includes a channel region having a receptor molecule fixed; forming a nano-particle conjugate in the channel region by supplying a sample for test and the nano-particle conjugate to the FET; growing a probe material on the channel region; and measuring a current flowing through the channel region, wherein the receptor molecule is a material that is selectively bonded to a target molecule in the sample for test.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventors: Chil Seong AH, Jong-Heon YANG, Chan Woo PARK, Chang-Geun AHN, Gun Yong SUNG
  • Cylindrical secondary battery
    Patent number: 9023500
    Abstract: A cylindrical secondary battery including a battery unit including a wound first electrode plate, separator, and second electrode plate, and first and second electrode tabs respectively protruding from the first and second electrode plates; a can for accommodating the battery unit; a cap assembly for sealing an opening of the can; and a first insulation plate in the can and on an upper portion of the battery unit, the first insulation plate being configured to prevent a short between the first electrode tab and the second electrode plate having different polarities, wherein the first insulation plate includes a linear small aperture through which the first electrode tab extends and a circular small aperture for injection of an electrolyte, and the linear and circular small apertures are disposed in a region equal to or less than 50% of the first insulation plate.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: May 5, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong-Ku Kim, Byung-Lyang Lee, June-Hyoung Park, Chan-Woo Park
  • APPARATUS FOR DRIVING PIEZO ACTUATOR AND METHOD OF DRIVING THE SAME
    Publication number: 20150102750
    Abstract: There are provided an apparatus for driving a piezo actuator and a method of driving the same. The apparatus includes: a control unit generating a digital control signal and converting the digital control signal into an analog control signal; a driving unit amplifying and not inverting the analog control signal to generate a first driving signal and amplifying and inverting the analog control signal to generate a second driving signal, with respect to a predetermined common voltage, and applying the first and second driving signals to both terminals of a piezo actuator; and an offset determining unit determining an offset in the first and second driving signals based on a voltage according to a current flowing in the piezo actuator, wherein the control unit generates the digital control signal to have an intermediate level in a predetermined offset detection section.
    Type: Application
    Filed: January 3, 2014
    Publication date: April 16, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chan Woo PARK, Joo Yul Ko
  • Light emitting diode driving apparatus
    Patent number: 8981649
    Abstract: There is provided a light emitting diode (LED) driving apparatus configured such that a waveform of current input to an LED follows a sine wave, the LED driving apparatus including, a switching unit switching an LED unit having a plurality of LEDs receiving rectified power and emitting light, a driving control unit controlling the switching of the switching unit according to a voltage level of the rectified power, a current limiting unit limiting current flowing in the LED unit, and an adjusting unit adjusting current limitation of the current limiting unit according to the voltage level of the rectified power.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 17, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yun Joong Lee, Jong Tae Hwang, Chan Woo Park, Je Hyeon Yu, Chang Seok Lee
  • CIRCUIT FOR GENERATING REFERENCE SIGNAL FOR CONTROLLING PEAK CURRENT OF CONVERTER SWITCH, ISOLATED CONVERTER AND METHOD FOR GENERATING REFERENCE SIGNAL FOR CONTROLLING PEAK CURRENT OF CONVERTER SWITCH
    Publication number: 20150062977
    Abstract: Embodiments of the invention provide a method and a circuit for generating a reference signal for controlling a peak current of a converter switch. According to at least one embodiment, the circuit includes a squarer configured to squire an input voltage signal divided from a primary-side supply voltage of an isolated converter, and a duty ratio calculator configured to calculate a duty ratio of energy transfer to a secondary side. The circuit further includes an operator configured to generate and output a reference signal for controlling the peak current of the converter switch from a square signal of the input voltage signal using the duty ratio of energy transfer calculated by the duty ratio calculator.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yun Joong LEE, Deuk Hee PARK, Chan Woo PARK, Jong Tae HWANG, Je Hyeon YU, Soo Hyun MOON, Hye Jin LEE, Chang Seok LEE, Sang Hyun CHA
  • CIRCUIT FOR GENERATING REFERENCE SIGNAL FOR CONTROLLING PEAK CURRENT OF CONVERTER SWITCH, ISOLATED CONVERTER AND METHOD FOR GENERATING REFERENCE SIGNAL FOR CONTROLLING PEAK CURRENT OF CONVERTER SWITCH
    Publication number: 20150062978
    Abstract: Embodiments of the invention provide a method and a circuit for generating a reference signal for controlling a peak current of a converter switch. According to at least one embodiment, a dead-zone generator configured to form a dead-zone in an input voltage signal divided from a primary-side supply voltage of an isolated converter, and a duty ratio calculator configured to calculate a duty ratio of energy transfer to a secondary side. The circuit further includes an operator configured to generate and output a reference signal for controlling the peak current of the converter switch from a dead-zone voltage signal having the dead-zone using the duty ratio of energy transfer calculated by the duty ratio calculator.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yun Joong LEE, Deuk Hee PARK, Chan Woo PARK, Jong Tae HWANG, Je Hyeon YU, Soo Hyun MOON, Hye Jin LEE, Chang Seok LEE, Sang Hyun CHA