Patents by Inventor Kyung Won Kang
Kyung Won Kang 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).
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Publication number: 20150091949Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.Type: ApplicationFiled: March 19, 2014Publication date: April 2, 2015Applicant: Samsung Display Co., Ltd.Inventors: Ho In KIM, Kyung Won KANG, Young-Sun KWAK, Sang An KWON, Hyeon-Do PARK, Won Jin SEO, Myung Bo SIM, Yoon Seop SHIM
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Patent number: 8971418Abstract: A digital television (DTV) transmitter and a method of coding data in the DTV transmitter method are disclosed. A pre-processor pre-processes the enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates one or more groups of enhanced data packets, each enhanced data packet including the pre-processed enhanced data. And, a packet multiplexer generates at least one burst of enhanced data by multiplexing the one or more groups of enhanced data packets. Herein, each burst of enhanced data includes at least one group of enhanced data packets. The DTV transmitter may further include a scheduler which generates first and second control signals to control operations of the data formatter and the packet multiplexer, respectively.Type: GrantFiled: March 21, 2011Date of Patent: March 3, 2015Assignee: LG Electronics Inc.Inventors: In Hwan Choi, Kyung Won Kang, Kook Yeon Kwak, Young Jin Hong, Sung Ryong Hong
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Publication number: 20140347384Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.Type: ApplicationFiled: May 19, 2014Publication date: November 27, 2014Applicant: Samsung Display Co., Ltd.Inventors: Young-Sun Kwak, Kyung Won Kang, Ji Hyun Kim, Hyeon-Do Park, Won Jin Seo, Jun-Ho Hwang
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Publication number: 20140254692Abstract: A method of processing a digital television (DTV) signal is disclosed. Herein, the DTV signal is generated by performing Reed-Solomon (RS) encoding on additional data, multiplexing the RS-encoded additional data with main data, RS encoding the multiplexed additional and main data, interleaving the RS-encoded additional and main data, trellis encoding the interleaved additional and main data, and transmitting a Radio Frequency (RF) DTV signal including the trellis-encoded additional and main data. The method to process the DTV signal includes receiving the DTV signal including the additional data multiplexed with the main data through an antenna, in which signaling information is periodically inserted in the additional data. The received DTV signal is demodulated including performing channel equalization on the demodulated DTV signal. Trellis decoding is performed on the channel-equalized DTV signal.Type: ApplicationFiled: May 20, 2014Publication date: September 11, 2014Applicant: LG ELECTRONICS INC.Inventors: Kyung Won KANG, In Hwan CHOI
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Publication number: 20140233657Abstract: A VSB communication system comprises a VSB transmission system and a VSB reception system. The VSB transmission system multiplexes a coded MPEG data and a coded supplemental data having a null sequence inserted therein, with required multiplexing information included in a field synchronization signal or in a supplemental data according to a number of the supplemental data packets being transmitted. The VSB reception system detects the required multiplexing information from the field synchronization signal or the supplemental data and decodes the multiplexed data by using the null sequence and the detected multiplexing information, as well as demultiplexes the multiplexed data into the MPEG data and the supplemental data.Type: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: LG ELECTRONICS INC.Inventors: In Hwan CHOI, Young Mo GU, Kyung Won KANG, Kook Yeon KWAK
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Publication number: 20140226731Abstract: A digital television system performing modulation/demodulation by VSB (vestigial side band) is provided. The invention includes a VSB transmitter including an additional error correction encoder designed such that a signal mapping of a TCM encoder is considered, a multiplexer (MUX), a TCM encoder operating in correspondence with state transition processes of the additional error correction encoder, and a signal transmission part including an RF converter. The invention further includes a VSB receiver including a signal receiver part receiving a signal transmitted from the transmitter, a TCM decoder, a signal processing part including a derandomizer, and an additional error correction decoder part.Type: ApplicationFiled: April 16, 2014Publication date: August 14, 2014Applicant: LG ELECTRONICS INC.Inventors: In Hwan CHOI, Young Mo GU, Kyung Won KANG, Kook Yeon KWAK
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Patent number: 8743971Abstract: Disclosed is a digital television system carrying out modulation/demodulation by VSB (vestigial side band). A VSB transmitter includes an additional error correction encoder designed in a manner that a signal mapping of a TCM encoder is considered, a multiplexer (MUX), a TCM encoder operating in a manner corresponding to state transition processes of the additional error correction encoder, and a signal transmission part including an RF converter. And, A VSB receiver includes a signal receiver part receiving a signal transmitted from the transmitter, a TCM decoder, a signal processing part including a derandomizer, and an additional error correction decoder part.Type: GrantFiled: July 6, 2010Date of Patent: June 3, 2014Assignee: LG Electronics Inc.Inventors: In Hwan Choi, Young Mo Gu, Kyung Won Kang, Kook Yeon Kwak
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Publication number: 20130294528Abstract: A channel equalizer includes a first transformer, an estimator, an average calculator, a second transformer, a coefficient calculator, a compensator, and a third transformer. The first transformer converts normal data into frequency domain data, where a known data sequence is periodically repeated in the normal data. The estimator estimates channel impulse responses (CIR) during known data intervals adjacent to each normal data block. The average calculator calculates an average value of the CIRs. The second transformer converts the average value into frequency domain data. The coefficient calculator calculates equalization coefficients using the average value, and the compensator compensates channel distortion of each normal data block using the coefficients. The third transformer converts the compensated data block into time domain data.Type: ApplicationFiled: July 10, 2013Publication date: November 7, 2013Inventors: Byoung Gill KIM, In Hwan CHOI, Kyung Won KANG, Kook Yeon KWAK, Woo Chan KIM
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Patent number: 8542577Abstract: A digital television (DTV) transmitter and a method of processing data in the DTV transmitter/receiver are disclosed. In the DTV transmitter, a pre-processor pre-processes the enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded data. A packet formatter generates one or more groups of enhanced data packets, each enhanced data packet including the pre-processed enhanced data and known data, wherein the data formatter adds burst time information into each group of enhanced data packets. And, a packet multiplexer generates at least one burst of enhanced data by multiplexing the one or more groups of enhanced data packets with at least one main data packet including the main data, each burst of enhanced data including at least one group of enhanced data packets.Type: GrantFiled: June 3, 2010Date of Patent: September 24, 2013Assignee: LG Electronics Inc.Inventors: Kyung Won Kang, Kook Yeon Kwak, Ja Hyuk Koo, Kyung Wook Shin, Yong Hak Suh, Young Jin Hong, Sung Ryong Hong
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Patent number: 8526508Abstract: A method of processing broadcast data in a transmitting system includes randomizing enhanced data; Reed-Solomon (RS) encoding and Cyclic Redundancy Check encoding the randomized enhanced data to build an RS frame; encoding the enhanced data in the built RS frame at a coding rate of at least ½ or ¼; first interleaving the encoded enhanced data; deinterleaving the first interleaved enhanced data; first multiplexing enhanced data packets including the deinterleaved enhanced data with main data packets including main data; randomizing the main data in the multiplexed enhanced and main data packets; second interleaving the enhanced data in the multiplexed enhanced and main data packets and the randomized main data to output a data group having the interleaved enhanced data and the interleaved main data; trellis encoding data in the data group in a trellis encoding unit; and second multiplexing the trellis-encoded data with field synchronization data and segment synchronization data.Type: GrantFiled: December 18, 2012Date of Patent: September 3, 2013Assignee: LG Electronics Inc.Inventors: Byoung Gill Kim, In Hwan Choi, Kyung Won Kang, Kook Yeon Kwak, Woo Chan Kim
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Patent number: 8488667Abstract: A digital television (DTV) transmitter includes a first randomizer randomizing enhanced data; a Reed-Solomon (RS) frame encoder generating an RS frame; a block processor encoding data in the RS frame, outputting data symbols, interleaving the data symbols, and converting the interleaved data symbols into data bytes; a group formatting unit mapping the data bytes into data groups; a deinterleaver deinterleaving data of the data groups; a packet formatter outputting enhanced data packets; a multiplexer multiplexing the enhanced data packets with main data packets; a second randomizer randomizing the multiplexed main data packets and MPEG header data in the multiplexed enhanced data packets; a Reed-Solomon (RS) encoder RS encoding the multiplexed enhanced data packets; an interleaver interleaving data of the RS-encoded data packets; and a trellis encoding unit trellis encoding the interleaved data.Type: GrantFiled: December 7, 2011Date of Patent: July 16, 2013Assignee: LG Electronics Inc.Inventors: Sung Ryong Hong, In Hwan Choi, Kyung Won Kang, Kook Yeon Kwak, Young Jin Hong
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Patent number: 8472544Abstract: A digital television (DTV) transmitter and a method of coding data in the DTV transmitter method are disclosed. A pre-processes enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates enhanced data packets including the pre-processed enhanced data and inserting known data to at least one of the enhanced data packets. A first multiplexer multiplexes main data packets with the enhanced data packets, and a data randomizer randomizes the multiplexed data packets. A Reed-Solomon (RS) encoder RS-codes the randomized data packets by adding first parity data, and a data interleaver interleaves the RS-coded data packets. A trellis encoder trellis-encodes the interleaved data packets, wherein the trellis encoder may be initialized when a known data sequence is inputted thereto.Type: GrantFiled: August 20, 2010Date of Patent: June 25, 2013Assignee: LG Electronics Inc.Inventors: In Hwan Choi, Kyung Won Kang, Kook Yeon Kwak, Young Jin Hong, Sung Ryong Hong
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Patent number: 8438464Abstract: A digital television (DTV) transmitter/receiver and a method of processing data in the DTV transmitter/receiver are disclosed. In the DTV transmitter, a pre-processor pre-processes the enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates enhanced data packets including the pre-processed enhanced data and inserts known data to at least one of the enhanced data packets. A first multiplexer multiplexes the enhanced data packets with main data packets including the main data. And, an RS encoder RS-codes the multiplexed main and enhanced data packets, the RS encoder adding systematic parity data to each main data packet and adding RS parity place holders to each enhanced data packet. Herein, the RS encoder may insert non-systematic RS parity data or null data into the RS parity place holders included in each enhanced data packet.Type: GrantFiled: May 10, 2011Date of Patent: May 7, 2013Assignee: LG Electronics Inc.Inventors: Kyung Won Kang, In Hwan Choi, Kook Yeon Kwak, Ja Hyuk Koo, Kyung Wook Shin, Yong Hak Suh, Young Jin Hong, Sung Ryong Hong
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Patent number: 8428150Abstract: Disclosed is a digital television system carrying out modulation/demodulation by VSB (vestigial side band). A VSB transmitter includes an additional error correction encoder designed in a manner that a signal mapping of a TCM encoder is considered, a multiplexer (MUX), a TCM encoder operating in a manner corresponding to state transition processes of the additional error correction encoder, and a signal transmission part including an RF converter. And, A VSB receiver includes a signal receiver part receiving a signal transmitted from the transmitter, a TCM decoder, a signal processing part including a derandomizer, and an additional error correction decoder part.Type: GrantFiled: October 31, 2007Date of Patent: April 23, 2013Assignee: LG Electronics Inc.Inventors: In Hwan Choi, Young Mo Gu, Kyung Won Kang, Kook Yeon Kwak
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Patent number: 8411128Abstract: An apparatus and method for controlling a camera of a portable terminal are provided. The method includes determining a rate at which at least a portion of a subject occupies an input image obtained in a video phone call from camera, comparing the determined rate with a preset reference level, automatically controlling a zoom function of the camera according to the comparison result, and transmitting the input image obtained from the camera in which the zoom function is automatically controlled.Type: GrantFiled: June 12, 2009Date of Patent: April 2, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Kyung Won Kang
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Patent number: 8369462Abstract: A DTV receiver includes a tuner, a demodulator, a channel equalizer, a sequence detector, and a burst controller. The tuner receives a DTV signal having main data and at least one burst of enhanced data. The demodulator demodulates the DTV signal by performing carrier and time recovery and the channel equalizer equalizes the demodulated signal. The sequence detector detects one or more known data sequences from any one of the received signal and the demodulated signal. The demodulator and the channel equalizer use the detected known data sequences when performing the carrier and timing recover and the channel-equalization, respectively. Lastly, the burst controller supplies power to the tuner, the demodulator, the channel equalizer, and the data detector only during a burst time for each burst of enhanced data for efficient power consumption.Type: GrantFiled: July 22, 2011Date of Patent: February 5, 2013Assignee: LG Electronics Inc.Inventors: Kyung Won Kang, In Hwan Choi, Kook Yeon Kwak, Young Jin Hong, Sung Ryong Hong
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Patent number: 8355451Abstract: A method of processing a digital broadcast signal includes Reed-Solomon (RS) encoding enhanced service data for each column of at least one RS frame payload and adding a Cyclic Redundancy Check (CRC) checksum byte at a right end of each row of the at least one RS frame payload to build at least one RS frame and forming data groups including the enhanced service data in the built RS frame and a plurality of known data sequences. Forming the data groups includes mapping the RS encoded enhanced service data into each of the data groups and inserting a place holder for a non-systematic RS parity into each of the data groups. The method further includes deinterleaving data in each of the data groups including the enhanced service data and the place holder and multiplexing the enhanced service data in each of the formed data groups with main service data.Type: GrantFiled: March 21, 2012Date of Patent: January 15, 2013Assignee: LG Electronics Inc.Inventors: Byoung Gill Kim, In Hwan Choi, Kyung Won Kang, Kook Yeon Kwak, Woo Chan Kim
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Publication number: 20120300791Abstract: A digital broadcasting receiving system and method is disclosed. In the data processing method, a known data sequence is tuned so as to be received, when the known data sequence is periodically inserted in valid data and transmitted. Then, the timing error is detected by using a correlation characteristic of the received known data sequence. Thereafter, a timing clock that is in proportion to the detected timing error is created, thereby interpolating the received data.Type: ApplicationFiled: November 16, 2011Publication date: November 29, 2012Inventors: Kyung Won Kang, In Hwan Choi, Jong Moon Kim
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Patent number: 8320485Abstract: A vestigial sideband (VSB) modulation transmission system and a method for encoding an input signal in the system are disclosed. According to the present invention, the VSB transmission system includes a convolutional encoder for encoding an input signal, a trellis-coded modulation (TCM) encoder for encoding the convolutionally encoded signal, and a signal mapper mapping the trellis-coded signal to generate a corresponding output signal. Different types of the convolutional encoders are explored, and the experimental results showing the performances of the VSB systems incorporating each type of encoders reveals that a reliable data transmission can be achieved even at a lower input signal to noise ratio when a convolutional encoder is used as an error-correcting encoder in a VSB system.Type: GrantFiled: September 21, 2009Date of Patent: November 27, 2012Assignee: LG Electronics Inc.Inventors: In Hwan Choi, Young Mo Gu, Kyung Won Kang, Kook Yeon Kwak
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Patent number: 8301985Abstract: A DTV transmitter includes a pre-processor pre-processing enhanced data, a data formatter generating enhanced data packets including the pre-processed enhanced data, and a multiplexer multiplexing the enhanced data packets with main data packets. The transmitter further includes an RS encoder RS-coding the multiplexed packets by adding systematic RS parity data to each main data packet and by adding non-systematic RS parity place holders to each enhanced data packet, and a data interleaver interleaving the RS-coded packets. The non-systematic RS parity place holders are placed after the enhanced data within each interleaved enhanced data packet, and a sequence of known data place holders is periodically included in the interleaved enhanced data packets.Type: GrantFiled: December 15, 2010Date of Patent: October 30, 2012Assignee: LG Electronics Inc.Inventors: In Hwan Choi, Kyung Won Kang, Kook Yeon Kwak