Patents by Inventor In-Soo Sohn

In-Soo Sohn 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).

  • Semiconductor memory device with multiple sub-memory cell arrays and memory system including same
    Patent number: 9384092
    Abstract: A semiconductor memory device includes; a memory cell array comprising a first sub-memory cell array storing first data having a first characteristic and a second sub-memory cell array storing second data having a second characteristic different from the first characteristic, a first peripheral circuit operatively associated with only the first sub-memory cell array to execute at least one of a read operation and a write operation directed to a target memory cell of the first sub-memory cell array, and a second peripheral circuit operatively associated with only the second sub-memory cell array to execute at least one of a read operation and a write operation directed to a target memory cell of the second sub-memory cell array.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: July 5, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae Hyun Kim, Seung Jun Bae, Young Soo Sohn, Tae Young Oh, Won Jin Lee
  • METHOD FOR CHANNEL SOUNDING IN WIRELESS LOCAL AREA NETWORK AND APPARATUS FOR THE SAME
    Publication number: 20160173259
    Abstract: A method, performed by a transceiver, is provided for channel sounding in a wireless local area network. A null data packet announcement (NDPA) frame is received from a transmitter to initiate the channel sounding. A null data packet (NDP) is received from the transmitter, the NDP following the NDPA frame. First feedback data split into a plurality of segments in a single aggregated medium access control protocol data unit (A-MPDU) is transmitted. A retransmission request is received from the transmitter, the retransmission request including a segment retransmission bitmap field indicating at least one segment of the plurality of segments for retransmission. In response to the retransmission request, second feedback data including the at least one segment indicated in the segment retransmission bitmap field is transmitted.
    Type: Application
    Filed: January 12, 2016
    Publication date: June 16, 2016
    Applicant: LG ELECTRONICS INC.
    Inventors: Dae Won LEE, Ill Soo SOHN, Yong Ho SEOK
  • Method and device for channel measurement in a wireless LAN system
    Patent number: 9369895
    Abstract: The present invention relates to a method and device for channel measurement in a wireless LAN system. A station (STA) receives a plurality of sounding frames from an access point (AP), estimates the plurality of sounding frames in order to generate long-term channel state information (LCSI), provides the generated LCSI to the AP as feedback, and receives from the AP a group identifier (ID) management frame comprising information on a group ID determined on the basis of the LCSI.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: June 14, 2016
    Assignees: SNU R&DB FOUNDATION, LG ELECTRONICS INC.
    Inventors: Ill Soo Sohn, Sunghyun Choi, Seung Min Yoo, Hyewon Lee, Mun Hwan Choi, Yong Ho Seok, Ok Hwan Lee
  • Devices, systems and methods with improved refresh address generation
    Patent number: 9355703
    Abstract: A refresh address generator may include a lookup table including a first portion storing a first group of addresses associated with a first data retention time, and a second portion storing a second group of addresses associated with a second data retention time different from the first data retention time, wherein the addresses of the first portion are more frequently accessed than the addresses of the second portion to refresh the memory cells corresponding to the addresses. Systems and methods may also implement such refresh address generation.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: May 31, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-Jin Lee, Dae-Hyun Kim, Sang-Yun Kim, Jae-Sung Kim, Young-Soo Sohn
  • ADDRESS-REMAPPED MEMORY CHIP, MEMORY MODULE AND MEMORY SYSTEM INCLUDING THE SAME
    Publication number: 20160148656
    Abstract: A memory chip includes a chip input-output pad unit, a plurality of semiconductor dies. The chip input-output pad unit includes a plurality of input-output pins connected to an external device and the plurality of semiconductor dies are connected commonly to the chip input-output pad unit and having a full memory capacity respectively. Each semiconductor die includes a die input-output pad unit, a memory region and a conversion block. The die input-output pad unit includes a plurality of input-output terminals respectively connected to the input-output pins of the chip input-output pad unit. The memory region includes an activated region corresponding to a portion of the full memory capacity and a deactivated region corresponding to a remainder portion of the full memory capacity. The conversion block connects the activated region except the deactivated region to the die input-output pad unit.
    Type: Application
    Filed: July 20, 2015
    Publication date: May 26, 2016
    Inventors: Cheol KIM, Young-soo SOHN, Sang-Ho SHIN
  • MEMORY DEVICE THAT PERFORMS INTERNAL COPY OPERATION
    Publication number: 20160147460
    Abstract: A memory device performing an internal copy operation is provided. The memory device may receive a source address, a destination address, and page size information together with an internal copy command, compares the source address with the destination address, and performs an internal copy operation. The internal copy operation may be an internal block copy operation, an inter-bank copy operation, or an internal bank copy operation. The internal copy operation may be performed with respect to one-page data, half-page data, or quarter-page data, based on the page size information. The memory device may output as a flag signal a copy-done signal indicating that the internal copy operation has been completed.
    Type: Application
    Filed: September 14, 2015
    Publication date: May 26, 2016
    Inventors: Young-soo SOHN, Sei-jin KIM, Kwang-il PARK, Tae-young KIM, Chul-woo PARK
  • MEMORY DEVICE HAVING PAGE STATE INFORMING FUNCTION
    Publication number: 20160148654
    Abstract: A memory device, system, and/or method are provided for performing a page state informing function. The memory device may compare one or more row addresses received along with a command, determine the page open/close state according to a page hit or miss generated as a result of comparison, count read or write commands with respect to pages corresponding to a same row address, and determine the page open/close state according to a read or write command number generated as a result of counting. The memory device may determine a page open/close state with respect to a corresponding page based on a page hit/miss and a read or write command number and output a flag signal. The memory device may provide the page open/close state for each channel. A memory controller may establish different page open/close policies for each channel.
    Type: Application
    Filed: September 14, 2015
    Publication date: May 26, 2016
    Inventors: Young-soo SOHN, Kwang-il PARK, Sei-jin KIM, Tae-young KIM
  • Method and apparatus of link adaptation in wireless local area network
    Patent number: 9350428
    Abstract: A method of link adaptation performed by an access point supporting multi user(MU) multiple input multiple output(MIMO) in wireless local area network system is provided. The method includes transmitting, to a first station, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) containing a modulation and coding scheme(MCS) request(MRQ) and receiving, from the first station, a MCS feedback(MFB) in response to the MRQ, wherein the first station is one of destination stations of MU-MIMO transmission performed by the access point, and the MFB includes a recommended MCS value computed, by the first station, on the assumption that the first station, as a member of the destination stations, receives data transmitted over at least one spatial stream allocated to the first station in MU-MIMO transmission.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: May 24, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Byeong Woo Kang, Ill Soo Sohn, Dae Won Lee, Yong Ho Seok
  • Channel sounding method in wireless local area network system and apparatus for supporting the same
    Patent number: 9350434
    Abstract: A method for a channel sounding in a wireless local area network. A station receives a 20 MHz null data packet announcement (NDPA) frame and at least one duplicate 20 MHz NDPA frame. The at least one duplicate 20 MHz NDPA frame is a duplicate of the 20 MHz NDPA frame. The station also receives a null data packet (NDP) following the 20 MHz NDPA frame and the at least one duplicate 20 MHz NDPA frame. The bandwidth over which the 20 MHz NDPA frame and the at least one duplicate 20 MHz NDPA frame are transmitted is the same as a bandwidth over which the NDP is transmitted. The station transmits a report frame for the channel sounding. The 20 MHz NDPA frame and the at least one duplicate 20 MHz NDPA frame comprise bandwidth information indicating the bandwidth over which the frames are transmitted.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: May 24, 2016
    Assignee: LG Electronics Inc.
    Inventors: Ill Soo Sohn, Yong Ho Seok, Jong Hyun Park, Dae Won Lee, Byeong Woo Kang
  • METHOD FOR TRANSMITTING AND RECEIVING DATA UNIT BASED ON UPLINK MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT TRANSMISSION AND APPARATUS FOR THE SAME
    Publication number: 20160143018
    Abstract: In an aspect, a method of receiving a data unit, performed by an Access Point (AP), in a Wireless LAN (WLAN) system is provided. The method includes transmitting a signal protection frame, the signal protection frame comprising a group ID field indicating a Multiple Input Multiple Output (MIMO) transmission STA group including a first station (STA) and a second STA; and, a spatial stream field indicating a number of spatial streams allocated to each of member STAs included in the MIMO transmission STA group; receiving a first preamble for a first data unit from the first STA; receiving a second preamble for a second data unit from the second STA; and simultaneously receiving the first data unit from the first STA and the second data unit from the second STA.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 19, 2016
    Inventors: Hyang Sun You, Ill Soo SOHN, Yong Ho Seok, Jong Hyun Park
  • METHOD FOR REPORTING CHANNEL INFORMATION BASED ON LINK ADAPTATION IN WIRELESS LOCAL AREA NETWORK AND THE APPARATUS FOR THE SAME
    Publication number: 20160127076
    Abstract: A method and a device for reporting a modulation and coding scheme (MCS) feedback in a wireless local area network are provided. A responding station receives, from a requesting station, a requesting Physical layer Protocol Data Unit (PPDU) for requesting a MCS feedback via a plurality of spatial streams. A recommended MCS is estimated under an assumption that the requesting station will transmit at least one first spatial stream among the plurality of spatial streams used for the requesting PPDU, The responding station transmits, to the requesting station, the MCS feedback including a recommended MCS field indicating the recommended MCS and a recommended stream field indicating a number of at least one recommended spatial stream. A number of the at least one first spatial stream used for estimating the recommended MCS is equal to the number of the at least one recommended spatial stream.
    Type: Application
    Filed: January 12, 2016
    Publication date: May 5, 2016
    Applicant: LG ELECTRONICS INC.
    Inventors: Ill Soo SOHN, Yong Ho SEOK, Kyoung Young SONG, Dae Won LEE, Byeong Woo KANG
  • Method and apparatus for feedback of channel state information
    Patent number: 9332449
    Abstract: Disclosed are a method and an apparatus for feed back of channel state information. The method for transmitting channel state information comprises the steps of: receiving a null data packet (NDP) frame; calculating signal to noise ratio (SNR) information based on subcarrier information of at least one spatial stream via which the NDP frame is transmitted; and calculating a compressed beamforming feedback matrix including channel state information based on the information on the subcarrier used in transmitting the spatial stream. Thus, accurate feedback information is calculated from a frequency selective channel and utilized to enable the efficient utilization of frequency resources.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: May 3, 2016
    Assignee: LG Electronics Inc.
    Inventors: Jong Hyun Park, Ill Soo Sohn
  • DISPLAY APPARATUS AND METHOD OF DRIVING THE DISPLAY APPARATUS
    Publication number: 20160111051
    Abstract: A display apparatus includes a display panel comprising a plurality of gate lines and a plurality of data lines, a gate driver circuit configured to generate a plurality of gate signals sequentially applied to the gate lines, and a timing controller configured to generate a reference control signal, the reference control signal adjusting at least one of a pulse-width and a phase of a predetermined gate signal among the gate signals.
    Type: Application
    Filed: April 28, 2015
    Publication date: April 21, 2016
    Inventors: JAE-GWAN JEON, JAE-HYOUNG PARK, KI-TAE YOON, DONG-WON PARK, YOUNG-SOO SOHN, WON-BOK LEE
  • Memory system for continuously mapping addresses of a memory module having defective locations
    Patent number: 9318168
    Abstract: In one example embodiment, a memory system includes a memory module and a memory controller. The memory module is configured generate density information of the memory module based on a number of the bad pages of the memory module, the bad pages being pages that have a fault. The memory controller is configured to map a continuous physical address to a dynamic random access memory (dram) address of the memory module based on the density information received from the memory module.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: April 19, 2016
    Assignee: Samsung Electronics Co., LTD.
    Inventors: Chul-Woo Park, Dong-Soo Kang, Su-A Kim, Jun-hee Yoo, Hak-Soo Yu, Jae-Youn Youn, Sung-hyun Lee, Kyoung-Heon Jeong, Hyo-Jin Choi, Young-Soo Sohn
  • METHOD OF USE TIME MANAGEMENT FOR SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE INCLUDING USE TIME MANAGING CIRCUIT
    Publication number: 20160104522
    Abstract: A use time managing method of a semiconductor device may include (1) measuring an amount of accumulated operation time of the semiconductor device and when the amount is reached to a predetermined value, generating a unit storage activation signal; (2) repeating step (1) to generate one or more additional unit storage activation signals, thereby generating a plurality of unit storage activation signals, wherein the predetermined values are different for each repeating step; (3) storing data indicating each occurrence of generating the unit storage activation signals; and (4) detecting use time of the semiconductor device based on the cumulatively stored data.
    Type: Application
    Filed: October 5, 2015
    Publication date: April 14, 2016
    Inventors: Jong-Pil SON, Chul-Woo PARK, Young-Soo SOHN
  • METHOD AND APPARATUS FOR DYNAMIC FREQUENCY SELECTION IN WIRELESS LOCAL AREA NETWORK SYSTEM
    Publication number: 20160100317
    Abstract: A method for a wireless local area network performed by an access point (AP) configured to communicate over a primary subchannel and a secondary subchannel. The AP transmits a frame including a quiet channel element to a receiving station. The quiet channel element indicates that the secondary subchannel is to be quieted during a quiet interval in which the AP tests the secondary subchannel for a presence of radar transmissions and the receiving station does not send any frame to the AP. The quiet channel element includes an AP quiet mode field indicating whether a communication to the AP is allowed within the primary subchannel during the quiet interval. The primary subchannel and the secondary subchannel are quieted during the quiet interval if the AP quiet mode field indicates the communication to the AP is not allowed with the primary subchannel during the quiet interval.
    Type: Application
    Filed: December 11, 2015
    Publication date: April 7, 2016
    Applicant: LG ELECTRONICS INC.
    Inventors: Jong Hyun PARK, Ill Soo SOHN, Eun Sun KIM, Yong Ho SEOK
  • Profiling method of address access count of semiconductor device and profiling circuit using the same
    Patent number: 9305631
    Abstract: Provided is a profiling unit and method for profiling a number of times that an input/output address of a semiconductor device is accessed. The profiling unit includes a hash unit configured to produce at least one hash value by perform a hash operation on the input/output address, and a profiling circuit configured to profile the number of times that the input/output address is accessed by using the at least one hash value.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: April 5, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Soo Sohn, Jong Pil Son, Jae Sung Kim, Chul Woo Park
  • Method and apapratus for transmitting a frame in a wireless LAN system
    Patent number: 9306785
    Abstract: The present invention relates to a method and apparatus for transmitting a frame in a wireless LAN system. An access point (AP) receives a single orthogonal frequency division multiplexing (OFDM) symbol from each of a plurality of stations (STA) and a single-tone request to send (sRTS) frame through a single subcarrier, selects STAs for performing uplink (UL) multiuser (MU)-multiple input multiple output (MIMO) transmission, and transmits to the plurality of STAs a single-tone clear to send (sCTS) frame allocated to the same subcarrier as a subcarrier to which the sRTS frames received from the selected STAs are allocated.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: April 5, 2016
    Assignees: LG ELECTRONICS INC., KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Ill Soo Sohn, Han Bae Kong, Hae Wook Park, Inkyu Lee, Chang Ick Song
  • Semiconductor memory device and system having redundancy cells
    Patent number: 9287004
    Abstract: In one embodiment, the memory device includes a memory cell array having at least a first memory cell group, a second memory cell group and a redundancy memory cell group. The first memory cell group includes a plurality of first memory cells associated with a first data line, the second memory cell group includes a plurality of second memory cells associated with a second data line, and the redundancy memory cell group includes a plurality of redundancy memory cells associated with a redundancy data line. A data line selection circuit is configured to provide a data path between an input/output node and one of the first data line, the second data and the redundancy data line.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: March 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-a Kim, Young-soo Sohn, Dae-hyun Kim
  • DISPLAY APPARATUS AND METHOD OF DRIVING THE DISPLAY APPARATUS
    Publication number: 20160071454
    Abstract: A display apparatus including a classifier configured to classify image data into preset data of an n-bits (“n” is a natural number), a toggle counter configured to count a number of toggles based on preset data of a present horizontal line and a previous horizontal line and to calculate a final toggle number using a weighted values corresponding to a swing width between data voltages of the present and previous horizontal lines, a determiner configured to determine a representative toggle number of a present frame based on a plurality of final toggle numbers of the present frame, compare the representative toggle number with a plurality of threshold values and determine a level of a power control signal based on a compared result.
    Type: Application
    Filed: May 6, 2015
    Publication date: March 10, 2016
    Inventors: Young-Soo SOHN, Ki-Tae Yoon, Won-Bok Lee, Jae-Gwan Jeon, Akihiro Takegama