Patents by Inventor Yoo-Jin Song

Yoo-Jin Song 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: 20240118543
    Abstract: A picture generation apparatus and a control method thereof are disclosed. An embodiment of the present disclosure provides a picture generation apparatus including a light source; a Spatial Light Modulator (SLM) configured to output an image using light transmitted from the light source; and a control unit configured to control the light source and the SLM based on at least one of illuminance of the surroundings or content of the image.
    Type: Application
    Filed: July 12, 2023
    Publication date: April 11, 2024
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Ki Hyuk SONG, Yu Jin SHIN, Jeong Ho CHO, Hyun Woo KANG, Yoo Na KIM, Jae Ho OH
  • Patent number: 8319704
    Abstract: A plasma display device, which gradually increases the current to the panel capacitors is disclosed. The display uses an inductor to reduce the current spike which would otherwise occur and create large electromagnetic interference.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 27, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myoung-Kyu Lee, Kazuhiro Ito, Yoo-Jin Song, Tae-Wook Kim
  • Patent number: 8253657
    Abstract: A driving apparatus of a plasma display is disclosed. The apparatus includes a first switch connected between a first power source for supplying a first voltage and a scan electrode, and a first diode and a second switch connected in series between a second power source for supplying a second voltage that is higher than the first voltage and the scan electrode. Further, the driving apparatus includes a third switch connected between a power recovery power source and a contact point between the first diode and the second switch, and a second diode connected in parallel the first diode and the third switch.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: August 28, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyong-Pil Jin, Yoo-Jin Song
  • Patent number: 8218325
    Abstract: A plasma display apparatus includes a plasma display panel (PDP), a chassis base secured on a first side to the PDP and having a driving circuit board mounted on a second side, a tower-shaped fixing unit that protrudes above the second side of the chassis base, and a back cover secured to a tower unit of the tower-shaped fixing unit to cover the driving circuit board.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: July 10, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Yoo-Jin Song
  • Patent number: 8115702
    Abstract: A plasma display device and a method of driving the same, capable of reducing or preventing the deterioration of components such as a switching device, due to an overcurrent. In a reset period, in order to cause the voltage of a scan electrode to ramp down from a first voltage to a second voltage, a panel driver includes a falling ramp switch that repeats turn-on/turn-off operations, alternately coupling and de-coupling a low-level power supply to the scan electrode, resulting in a gradually falling ramp waveform. A switch controller generates a switching pulse to control the falling ramp switch. Each turn-on time of the switching pulse for the initial falling ramp waveform following a power-on of the plasma display device is controlled to be shorter than each turn-on time of the switching pulse for other falling ramp waveform.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 14, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ito Kazuhiro, Yoo-jin Song, Tae-wook Kim
  • Publication number: 20110090197
    Abstract: A plasma display includes a panel capacitor formed by a first electrode and a second electrode for sustain discharging in a sustain period. A driving apparatus of such plasma display includes a switching circuit unit, and a transformer including a primary coil and a secondary coil. The switching circuit unit generates a square wave voltage using an input voltage of an input source so that a voltage of two terminals of the panel capacitor alternately has a positive voltage and a negative voltage. The primary coil is connected between two output terminals of the switching circuit unit, and the secondary coil is connected between two terminals of the panel capacitor.
    Type: Application
    Filed: August 13, 2010
    Publication date: April 21, 2011
    Inventor: Yoo-Jin Song
  • Publication number: 20100149154
    Abstract: An energy recovery circuit for a plasma display panel having a reduced number of components. The energy recovery circuit includes a source capacitor, an inductor, a panel capacitor and six switches. The circuit is designed so that the source capacitor, the inductor and two of the switches are shared in operation, thereby reducing the number of components.
    Type: Application
    Filed: December 7, 2009
    Publication date: June 17, 2010
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Kyoung-Pil Jin, Yoo-Jin Song
  • Publication number: 20100149765
    Abstract: A plasma display apparatus includes a plasma display panel (PDP), a chassis base secured on a first side to the PDP and having a driving circuit board mounted on a second side, a tower-shaped fixing unit that protrudes above the second side of the chassis base, and a back cover secured to a tower unit of the tower-shaped fixing unit to cover the driving circuit board.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 17, 2010
    Inventor: Yoo-Jin Song
  • Publication number: 20100039420
    Abstract: A driving apparatus of a plasma display is disclosed. The apparatus includes a first switch connected between a first power source for supplying a first voltage and a scan electrode, and a first diode and a second switch connected in series between a second power source for supplying a second voltage that is higher than the first voltage and the scan electrode. Further, the driving apparatus includes a third switch connected between a power recovery power source and a contact point between the first diode and the second switch, and a second diode connected in parallel the first diode and the third switch.
    Type: Application
    Filed: August 12, 2009
    Publication date: February 18, 2010
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Kyong-Pil Jin, Yoo-Jin Song
  • Publication number: 20100026672
    Abstract: A plasma display panel (PDP) with reduced switching loss when the PDP is driven at a high frequency. The PDP includes a first electrode, a second electrode parallel to the first electrode, and a third electrode crossing the first electrode and the second electrode, and a driver for applying a plurality of sustain pulses at a sustain frequency to the first electrode during a sustain period. The driver includes a first driving circuit for applying a first portion of the plurality of sustain pulses to the first electrode and a second driving circuit for applying a second portion of the plurality of sustain pulses to the first electrode. The first portion and the second portion of the plurality of sustain pulses have the same polarity, and the first driving circuit and the second driving circuit are configured to apply the first portion and the second portion, respectively, at different time.
    Type: Application
    Filed: March 27, 2009
    Publication date: February 4, 2010
    Inventor: Yoo-Jin Song
  • Publication number: 20100013809
    Abstract: A scan driver includes a scan driving integrated circuit, a first film on a first surface of the scan driving integrated circuit, the first film including at least one first wire adapted to provide reference potential to the scan driving integrated circuit, and a second film on a second surface of the scan driving integrated circuit, the second surface of the scan driving integrated circuit being opposite the first surface, and the second film including at least one second wire adapted to transfer input and output signals.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 21, 2010
    Inventor: Yoo-Jin Song
  • Publication number: 20090002278
    Abstract: A plasma display device, which gradually increases the current to the panel capacitors is disclosed. The display uses an inductor to reduce the current spike which would otherwise occur and create large electromagnetic interference.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 1, 2009
    Inventors: Myoung-Kyu Lee, Kazuhiro Ito, Yoo-Jin Song, Tae-Wook Kim
  • Publication number: 20080291130
    Abstract: A plasma display device and a method of driving the same, capable of reducing or preventing the deterioration of components such as a switching device, due to an overcurrent. In a reset period, in order to cause the voltage of a scan electrode to ramp down from a first voltage to a second voltage, a panel driver includes a falling ramp switch that repeats turn-on/turn-off operations, alternately coupling and de-coupling a low-level power supply to the scan electrode, resulting in a gradually falling ramp waveform. A switch controller generates a switching pulse to control the falling ramp switch. Each turn-on time of the switching pulse for the initial falling ramp waveform following a power-on of the plasma display device is controlled to be shorter than each turn-on time of the switching pulse for other falling ramp waveform.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 27, 2008
    Inventors: Ito Kazuhiro, Yoo-jin Song, Tae-wook Kim
  • Publication number: 20080258635
    Abstract: A plasma display is provided. The plasma display includes a plasma display panel (PDP) having first electrodes, second electrodes, and third electrodes; a power supply for supplying a first voltage, a second voltage and a third voltage; a driving circuit for driving at least one of the first electrodes; and a controller for controlling the driving of the first driving circuit. The first driving circuit includes: a first photo coupler and a second photo coupler for generating signals corresponding to logic signals from the controller; a scan integrated circuit (IC) configured to selectively apply the third voltage that is lower than either the first voltage or the second voltage; a buffer for delivering the first signal and the second signal to the scan IC; and a reset circuit for driving the buffer when the first voltage is higher than a fourth voltage.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 23, 2008
    Inventors: Kyong-Pil Jin, Yoo-Jin Song
  • Publication number: 20080204441
    Abstract: A reset circuit preventing the malfunction and breakage of an integrated circuit included in a plasma display device, and a plasma display device including thereof, wherein the reset circuit monitors the input voltage applied to the integrated circuits of the plasma display device to control the reset or non-reset operation of the integrated circuits.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 28, 2008
    Inventor: Yoo-jin Song
  • Publication number: 20080180360
    Abstract: Disclosed are a plasma display device including a reset unit in an integrated circuit, which may prevent an erroneous operation and damage of the IC by sensing an input power source applied to the IC in order to control a reset or a non-reset of an operation of the IC, and a method for driving the same.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 31, 2008
    Inventor: Yoo-jin Song
  • Publication number: 20080174249
    Abstract: A plasma display apparatus includes a selection circuit having a first terminal and a second terminal, a pulse supply unit having a first power source configured to provide a first voltage to the first terminal of the selection circuit, a second power source configured to provide a second voltage to the second terminal of the selection circuit, and a thermal fusible resistor between the first terminal of the selection circuit and the first power source, wherein the selection circuit is configured to selectively provide a first voltage and a second voltage to an electrode of the plasma display apparatus.
    Type: Application
    Filed: December 13, 2007
    Publication date: July 24, 2008
    Inventor: Yoo-jin Song
  • Publication number: 20080174525
    Abstract: In plasma display device, a transistor includes a source terminal connected to a power supply that sequentially applies voltage pulses having a scan voltage to a plurality of scan electrode in a address period, and a drain terminal connected to a plurality of scan electrodes. A first resistor is connected between the source and the gate terminals of the transistor, and a second resistor is connected between the drain and the gate terminals of the transistor. A Zener diode is connected to the first resistor between the source and the gate terminals of the transistor. Therefore, a voltage finally applied to the plurality of scan electrodes can be generated using the same power supply that supplies the scan voltage in the falling period of the reset period.
    Type: Application
    Filed: November 26, 2007
    Publication date: July 24, 2008
    Inventors: Kazuhiro Ito, Yoo-Jin Song, Sun-Kuk Kim
  • Publication number: 20080174590
    Abstract: A plasma display and a driving method thereof are disclosed. The plasma display includes a power supply that supplies a plurality of voltages to a driver driving first electrodes through a plurality of fuses. The power supply supplies the plurality of fuses with a fuse driving voltage used to control the plurality of fuses. When an error occurs in the driver connected to a first fuse, the fuse driving voltage is not supplied to the plurality of fuses. Then, the entire operation of the driver is stopped. Therefore, elements of the driver, in which errors do not occur, can be prevented from being further damaged.
    Type: Application
    Filed: November 29, 2007
    Publication date: July 24, 2008
    Inventor: Yoo-Jin Song
  • Publication number: 20080170001
    Abstract: A display driver includes a first circuit configured to supply a first voltage and a second voltage to at least one electrode of a plasma display panel, and a second circuit configured to supply a third voltage from a first node of the second circuit to the at least one electrode, the third voltage being between the first voltage and the second voltage. The second circuit includes a first switching transistor controlled by a switching control signal, a second switching transistor controlled by the first switching transistor, the second switching transistor being configured control a connection between a first power terminal and the first node, the first power terminal supplying the first voltage, and a capacitor coupled between the first node and a second power terminal, the second power terminal supplying the second voltage, the capacitor being charged when the second switching transistor is turned on.
    Type: Application
    Filed: November 27, 2007
    Publication date: July 17, 2008
    Inventor: Yoo-Jin Song