Patents by Inventor Joon-hyun Yang
Joon-hyun Yang 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).
-
Patent number: 8467204Abstract: A high voltage power supply is provided. The high voltage power supply includes an inverter which converts a DC voltage input to the high voltage power supply into a first AC voltage, a transformer including an input winding unit and a plurality of output winding units, wherein the input winding unit receives the first AC voltage from the inverter and the plurality of output winding units generates and outputs a second AC voltage, and a voltage multiplier unit which boosts the second AC voltage output by the transformer and outputs a boosted voltage, and the voltage multiplier unit includes a plurality of voltage multipliers which are connected to each other in series and the plurality of voltage multipliers may be connected to the plurality of output winding units respectively.Type: GrantFiled: November 22, 2010Date of Patent: June 18, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Pankaj Agarwal, Kang-hyun Yi, Sung-jin Choi, Joon-hyun Yang
-
Publication number: 20130010008Abstract: A display apparatus is disclosed. The display apparatus includes a display portion including a plurality of pixels; a voltage driving portion that provides voltages to the plurality of pixels; and a control portion which controls the voltage driving portion to provide the voltages to the plurality of pixels, each of the voltages corresponding to a characteristic of a respective type of pixel of the plurality of pixels.Type: ApplicationFiled: July 5, 2012Publication date: January 10, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joon-hyun YANG, Kang-hyun YI, Kang-wook CHUN
-
Patent number: 8345033Abstract: An image processing apparatus, a power supply apparatus and a circuit apparatus, the image processing apparatus including a display unit which displays thereon an input image, and a power supply unit which outputs direct current power to drive the display unit, but gradually increases a voltage level of the direct current power.Type: GrantFiled: August 20, 2009Date of Patent: January 1, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Agarwal Pankaj, Jin-gil Jeong, Joon-hyun Yang
-
Patent number: 8334833Abstract: A display apparatus, includes: a display unit which displays a video; a light source unit having a plurality of light sources which are independently driven, and which illuminate the display unit; and a driving unit which drives the light source unit. The driving unit includes: a driving signal generating unit which generates a driving signal which has a first voltage level and a second voltage level so that the plurality of light sources can be independently driven, and a control unit which blocks or applies the driving signal to drive the light source unit based on a voltage level which is applied to the light source unit if the driving signal which is generated by the driving signal generating unit is the first voltage level.Type: GrantFiled: November 16, 2007Date of Patent: December 18, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Agarwal Pankaj, Joon-hyun Yang
-
Patent number: 8259097Abstract: A backlight assembly, a display device including the backlight assembly and a control method thereof are provided. The backlight assembly includes: a DC converter which converts input alternating current (AC) power into direct current (DC) power at various levels; a light source unit which has at least one point light source; and a power supply unit which receives the DC power output by the DC converter, converts the DC power into output power having a preset reference current level and supplies the output power to the light source unit.Type: GrantFiled: March 3, 2009Date of Patent: September 4, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-hoon Kim, Joon-hyun Yang
-
Publication number: 20120062173Abstract: A wireless charging apparatus and a wireless charging system using the same are provided. The wireless charging apparatus includes a sensing resonator that senses for an external device; a transmission resonator that transmits energy to the external device by magnetic resonance; and a transmission circuit that controls the transmission resonator in accordance with an output of the sensing resonator.Type: ApplicationFiled: July 18, 2011Publication date: March 15, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-jin CHOI, Kang-hyun YI, Joon-hyun YANG
-
Patent number: 8049431Abstract: An apparatus and a method for driving a light source are provided. The apparatus includes a power converting unit which converts a direct current (DC) power into an alternating current (AC) power for driving the light source, and a control unit which controls the power converting unit to convert the DC power into the AC power according to a pulsewave.Type: GrantFiled: September 11, 2007Date of Patent: November 1, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Pankaj Agarwal, Joon-hyun Yang
-
Publication number: 20110242853Abstract: A high voltage power supply is provided. The high voltage power supply includes an inverter which converts a DC voltage input to the high voltage power supply into a first AC voltage, a transformer including an input winding unit and a plurality of output winding units, wherein the input winding unit receives the first AC voltage from the inverter and the plurality of output winding units generates and outputs a second AC voltage, and a voltage multiplier unit which boosts the second AC voltage output by the transformer and outputs a boosted voltage, and the voltage multiplier unit includes a plurality of voltage multipliers which are connected to each other in series and the plurality of voltage multipliers may be connected to the plurality of output winding units respectively.Type: ApplicationFiled: November 22, 2010Publication date: October 6, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pankaj AGARWAL, Kang-hyun YI, Sung-jin CHOI, Joon-hyun YANG
-
Publication number: 20110234012Abstract: A wireless power transceiving system includes a power transmitting apparatus which converts power into a resonance wave and transmits the resonance wave, and a power receiving apparatus which receives the transmitted resonance wave and converts the resonance wave into DC power using a series resonant rectifier circuit which is impedance matched with impedance of the power receiving apparatus at a frequency of the resonance wave.Type: ApplicationFiled: September 10, 2010Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kang-hyun YI, Sung-jin CHOI, Pankaj AGARWAL, Joon-hyun YANG
-
Publication number: 20110234011Abstract: A wireless power transceiving system includes a power transmitting apparatus which converts power into a resonance wave and transmits the resonance wave, and a power receiving apparatus which receives the transmitted resonance wave, and converts the resonance wave into DC power using a parallel resonant rectifier circuit that is impedance matched with impedance generated in the power receiving apparatus by parasitic components at a frequency of the resonance wave.Type: ApplicationFiled: September 10, 2010Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kang-hyun YI, Sung-jin CHOI, Joon-hyun YANG
-
Publication number: 20110234771Abstract: Apparatus, method, and system for synchronization and a three-dimensional (3D) display apparatus using the same are provided. The 3D display apparatus includes: a power generator which generates power based on a received alternating current (AC) power signal, a detector which detects zero crossing points of time of the received AC power signal, and a controller which generates a reference signal based on the detected zero crossing points of time and transmits the reference signal to at least one other 3D display apparatus.Type: ApplicationFiled: December 29, 2010Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyung-rae KIM, Yoon-soon AHN, Tae-Don HWANG, Joon-hyun YANG, Tae-hyeun HA
-
Publication number: 20110234186Abstract: A high voltage power supply is provided. The high voltage power supply includes a soft-start circuit unit which outputs a natural voltage that decreases exponentially as time elapses and converts the natural voltage into a forced voltage having a predetermined scale if an enable signal is applied, a controller which compares the natural voltage output from the soft-start circuit unit with a reference voltage and outputs a control signal, and a converting unit which delays outputting a final voltage during a first predetermined time period and outputs the final voltage, which gradually increases as time elapses according to the control signal.Type: ApplicationFiled: November 22, 2010Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pankaj AGARWAL, Joon-hyun YANG, Sung-jin CHOI
-
Publication number: 20110222154Abstract: Three-dimensional (3D) eyeglasses, a charging cradle, a 3D display apparatus, and a system for charging 3D eyeglasses wirelessly are provided. A pair of 3D eyeglasses which operates in association with the 3D display apparatus includes a wireless charging unit which generates electricity using a signal wirelessly received from an external apparatus, and a power supply unit which supplies power to the 3D eyeglasses using the electricity charged by the wireless charging unit.Type: ApplicationFiled: December 21, 2010Publication date: September 15, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-jin CHOI, Kang-hyun YI, Joon-hyun YANG, Myoung-jun LEE
-
Publication number: 20110057960Abstract: A backlight apparatus and a display apparatus are provided. The backlight apparatus includes N first switch units to switch a plurality of currents flowing in respective N light emitting element arrays according to an input brightness control signal, N second switch units to switch a plurality of currents flowing in respective N capacitors according to the input brightness control signal, and a reference current generation unit to generate and output a reference current based on the input brightness control signal. An inverter unit adjusts a total current supplied to all of the light emitting element arrays in total to be equal to the reference current if the total current is different from the reference current.Type: ApplicationFiled: April 16, 2010Publication date: March 10, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hoon KIM, Sung-jin CHOI, Pankaj AGARWAL, Joon-hyun YANG
-
Publication number: 20100156872Abstract: An image processing apparatus, a power supply apparatus and a circuit apparatus, the image processing apparatus including a display unit which displays thereon an input image, and a power supply unit which outputs direct current power to drive the display unit, but gradually increases a voltage level of the direct current power.Type: ApplicationFiled: August 20, 2009Publication date: June 24, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Agarwal PANKAJ, Jin-gil JEONG, Joon-hyun YANG
-
Publication number: 20100052558Abstract: Disclosed are a backlight assembly, a driving method thereof and a display apparatus. The backlight assembly includes: a light source unit which has a plurality of point light source strings; a plurality of driving elements which are connected to the plurality of point light source strings; a detector which detects currents flowing in the plurality of point light source strings; and a light source driver which generates driving pulses to drive the plurality of driving elements in a linear operating region, adjusts duty ratios of the driving pulses based on at least one of the detected currents so that the currents flowing in the plurality of point light source strings are within a range.Type: ApplicationFiled: August 28, 2009Publication date: March 4, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-hoon LEE, Joon-hyun YANG, Tae-hoon KIM, Youn-hee KIM
-
Publication number: 20100007644Abstract: A backlight assembly, a display device including the backlight assembly and a control method thereof are provided. The backlight assembly includes: a DC converter which converts input alternating current (AC) power into direct current (DC) power at various levels; a light source unit which has at least one point light source; and a power supply unit which receives the DC power output by the DC converter, converts the DC power into output power having a preset reference current level and supplies the output power to the light source unit.Type: ApplicationFiled: March 3, 2009Publication date: January 14, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-hoon KIM, Joon-hyun YANG
-
Patent number: 7629949Abstract: A single-sided driver used with a display panel and a method of designing the same. The single-sided driver used with a display panel includes a single-sided driver circuit having predetermined circuit elements including energy accumulation elements and switching elements, and establishes current flow paths to generate predetermined driving voltage waveforms required for both X and Y axes electrodes, according to predetermined switching sequences to drive the display panel.Type: GrantFiled: April 19, 2004Date of Patent: December 8, 2009Assignee: Samsung Electronics Co., Ltd.Inventor: Joon-hyun Yang
-
Publication number: 20090027929Abstract: A power supply circuit of an image display apparatus is provided. The power supply circuit uses a single DC-DC converter, and is capable of supplying low voltage when the image display apparatus is in standby mode, and supplying high voltage as required when the image display apparatus is in operating mode. As a result, power consumption and manufacturing costs are reduced.Type: ApplicationFiled: April 1, 2008Publication date: January 29, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-hoon Kim, Joon-hyun Yang
-
Publication number: 20090021468Abstract: A display apparatus, includes: a display unit which displays a video; a light source unit having a plurality of light sources which are independently driven, and which illuminate the display unit; and a driving unit which drives the light source unit. The driving unit includes: a driving signal generating unit which generates a driving signal which has a first voltage level and a second voltage level so that the plurality of light sources can be independently driven, and a control unit which blocks or applies the driving signal to drive the light source unit based on a voltage level which is applied to the light source unit if the driving signal which is generated by the driving signal generating unit is the first voltage level.Type: ApplicationFiled: November 16, 2007Publication date: January 22, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Agarwal PANKAJ, Joon-Hyun YANG