Patents Assigned to SK Telecom Ltd.
  • Patent number: 11297344
    Abstract: Disclosed herein is a method for adaptive bidirectional optical flow estimation for inter-screen prediction compensation during video encoding. The method aims to reduce complexity and/or cost of bidirectional optical flow (BIO) at a pixel level or a subblock level.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: April 5, 2022
    Assignee: SK TELECOM., LTD.
    Inventors: Jeong-yeon Lim, Hyo Song Kim, Hyeong-duck Kim, Se-hoon Son, Jae-seob Shin, Gyeong-taek Lee, Sun-young Lee
  • Patent number: 10491551
    Abstract: The present disclosure provides a terminal device. The terminal device includes: a communication unit configured to transmit or receive a message containing at least one of text, video and audio, through a communication network; a memory unit configured to store a plurality of message processing applications, and a message database (DB); and a control unit configured to perform a first delivering of the message, received through the communication unit, to the plurality of message processing applications through a first transmission path, and a second delivering, after a first predetermined time from said first delivering, of the received message again to a first message processing application among the plurality of message processing applications through a second transmission path.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: November 26, 2019
    Assignee: SK TELECOM., LTD.
    Inventors: Jintae Choi, Sangchul Ha, Yongwon Song
  • Patent number: 8315614
    Abstract: A method and apparatus for a called subscriber to send a sound for his own personal information as a ringback tone with a ringback tone replacing sound are disclosed. The method comprises the steps of: HLR providing MSC with the first information about whether a ringback tone is to be replaced or not and the second information for routing to sound providing means when a called terminal is registered in MSC; MSC requesting a call connection to the sound providing means based on the first and second information when the called terminal is called; and the sound providing means call-connecting to the calling terminal, and providing the calling terminal with a specific sound, wherein the specific sound is generated by combining a subscriber information sound, which can identify the called subscriber or can represent the subscriber's character, with the ringback tone replacing sound.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: November 20, 2012
    Assignee: SK Telecom., Ltd.
    Inventors: Yeong-Tae No, Sang-Yun Lee, Hee-Hyeok Hahm, Ki-Mun Kim, Jae-Young Park, Soon-Ki Hwang
  • Patent number: 8068510
    Abstract: Disclosed is a demodulation apparatus for receiving signals by an adaptive modulation and coding method, and demodulating the signals, in an OFDMA based packet communication system, comprising: a QAM demapper for performing QAM demapping to the received signals by a modulation method using a maximum modulation ratio, until modulation methods for each of sub-channels are analyzed; a slot buffer for storing the data outputted from the QAM demapper; a channel decoder for decoding the data stored in the slot buffer and analyzing modulation methods for each sub-channels and transferring the analyzed modulation methods to the QAM demapper; and in at the same time, reading valid data from the data stored in the slot buffer, based on the analyzed modulation methods for each sub-channels, and demodulating the valid data.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: November 29, 2011
    Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd, KT Corporation, SK Telecom., Ltd, Ktfreetel Co., Ltd, Hanaro Telecom., Inc.
    Inventors: Jun-Woo Kim, Young-Hoon Kim, Su-Chang Chae, Youn-Ok Park
  • Publication number: 20110207407
    Abstract: The present invention relates to a system, a method, a service server, an end-point terminal, a connection method and storage media for recommending an efficient connection path, in which if an end-point terminal connected to a mobile communication terminal through a short-range communication network can be connected to a service server through two or more mobile communication terminals, the end-point terminal can use a service through a mobile communication terminal capable of providing an optimum connection.
    Type: Application
    Filed: October 28, 2009
    Publication date: August 25, 2011
    Applicant: SK TELECOM., LTD
    Inventors: In Hwan Kim, Jeong Hoon Lee, Jeong Min You
  • Patent number: 7912484
    Abstract: A system and method for providing zone-based personalized information to a user of mobile communication terminal located in a specific zone are presented. The system comprises a zone management system which acquires MIN information of a mobile communication terminal entering a specific zone, a zone information management server which receives the MIN information and zone identification information, requests location registration of the terminal to HLR and retrieves transmission information to be transferred to the terminal, and a SMS server which receives the transmission information and the MIN information from the zone information management server, gets location information of the terminal corresponding to the MIN information from the HLR, and transfers the transmission information and the MIN information to base station of the cell where the terminal is located. According to the system, distinct information according to the present location of the user can be provided for the user.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: March 22, 2011
    Assignees: SK Telecom Ltd.
    Inventor: Sung-Chul Sohn
  • Publication number: 20070172953
    Abstract: The present invention relates to mobile communication terminal including an electronic compass module and a method for playing a network mobile game by using the electronic compass module.
    Type: Application
    Filed: September 15, 2004
    Publication date: July 26, 2007
    Applicants: SK TELECOM LTD, NEXMORE SYSTEMS INC.
    Inventor: Kihak Shim