Seoul, South Korea
Seoul, South Korea

SK Telecom Co., Ltd. is a South Korean wireless telecommunications operator, controlled by the SK Group, one of the country's largest chaebols.SK Telecom is a provider of mobile service, with 50.5% share of the South Korean market as of 2008. Since its establishment on March 29, 1984, the company has evolved from a first generation analog cellular system, to second generation CDMA, then to the world's first third-generation synchronized IMT-2000 cellular system. SK Telecom also became the world’s first carrier to commercialize HSDPA in May 2006.The company’s current services include NATE, a wired and wireless integrated multi-Internet service, June, a multimedia service, MONETA, a financial service, Telematic service such as NATE Drive and even Digital Home service. In 2004, SK Telecom launched Hanbyul, the world’s first DMB satellite. SK Telecom's subsidiary TU Media provides satellite DMB. SK Telecom also offers a variety of internet services, many through its subsidiary SK Communications. Cyworld is one of the most popular blogging services in South Korea and NateOn is one of the most popular instant messengers. Wikipedia.


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Patent
SK Telecom | Date: 2016-11-11

Disclosed are a stamper, a terminal and an operation method thereof. The stamper includes: a transmission part configured to transmit a beacon signal related to stamp saving to a terminal; a contact tip contacting the terminal; and a control part configured to include a bit value in the beacon signal, wherein the bit value is generated to indicate contact of the contact tip with the terminal.


A video decoding apparatus for inter-predicting a current block to be decoded, includes: a decoder to extract motion information on the current block from a bitstream; and a predictor to determine a motion vector of the current block based on the extracted motion information, and generate a prediction block based on interpolating chroma sub-samples of a reference block in a reference frame referenced by the motion vector of the current block.


A real-time broadcasting contents transmission method and device are disclosed. In an embodiment, the contents transmission control device includes a communication unit, a storage unit, and a control unit. The communication unit transmits and receives data to and from both a contents providing server and a local caching device distributed over and deployed in a network. The storage unit stores a streaming list which is information about one or more streaming contents received from the contents providing server. When a request being transmitted to the contents providing server for streaming content is received from a terminal device through the communication unit, the control unit determines whether the requested streaming content is registered in the streaming list. If the requested streaming content is registered in the streaming list, the control unit branches the streaming content received from the contents providing server and then, after delay for a predetermined time, transmits the streaming content to the terminal device.


An image filtering apparatus and method and a video encoding/decoding apparatus and method using the same are disclosed. The image filtering apparatus includes: a boundary identifying unit for identifying a boundary between two transform blocks included in an image; a pixel/strength selecting unit for selecting a filtering strength according to a size of at least one transform block among the two transform blocks; and a filtering unit for filtering at least one pixel included in a region adjacent to the boundary.


An image filtering apparatus and method and a video encoding/decoding apparatus and method using the same are disclosed. The image filtering apparatus includes: a boundary identifying unit for identifying a boundary between two transform blocks included in an image; a pixel/strength selecting unit for selecting a filtering strength according to a size of at least one transform block among the two transform blocks; and a filtering unit for filtering at least one pixel included in a region adjacent to the boundary.


Patent
Dolby International Ab and SK Telecom | Date: 2017-01-11

An apparatus for generating a data stream having a series of segments using data organized in subsequent data frames. The apparatus comprises a packetiser for packetising data from a data frame into the series of segments having a first segment and a second segment, where the second segment has interpretable data entities and has a data entity fragment, the data entity fragment including only a part of an interpretable data entity preceding an interpretable data entity. The apparatus comprises furthermore an information block adder for adding an information block associated with the second segment, the information block indicating an entry point into the second segment, the entry point indicating a start of the interpretable data entity following the data entity fragment.


The present disclosure relates to a method for transmitting content between terminals through a service control device link. To this end, A method for content delivery between devices through interworking with a service control apparatus, the method performed by a device, the method comprising: creating a neighboring device list containing connectable neighboring devices by searching for the connectable neighboring devices; transmitting, to the service control apparatus via a network, the created neighboring device list and a domain query message for content; receiving, from the service control apparatus and as a response to the transmitted domain query message, information on a content providing device for providing the content among the connectable neighboring devices contained in the neighboring device list; and requesting and receiving the content from the content providing device.


Patent
SK Telecom | Date: 2017-01-09

A video decoding apparatus includes: a decoder to determine a size of a minimum block unit among block units in which quantization parameter information is decoded from a bitstream, determine a current block to be decoded by dividing a block larger than 1616 into one or more blocks, decode, from the bitstream, a skip information and the motion information for deriving the motion vector of the current block without decoding information on residual signals of the current block, and decode, from the bitstream, prediction information of the current block and quantized transform coefficients of the current block; and a video reconstructor to determine the motion vector of the current block using the decoded motion information, reconstruct residual signals from the quantized transform coefficients by inversely quantizing the quantized transform coefficients using a quantization parameter, and reconstruct the current block based on the prediction information and the reconstructed residual signals.


A video encoding method for encoding a current motion vector of a current block, includes: deriving a plurality of candidate predictive motion vectors by using motion vectors of adjacent blocks of the current block; selecting a predictive motion vector of the current block from among the candidate predictive motion vectors; generating a differential motion vector by subtracting the predictive motion vector from the current motion vector; and encoding, into a bitstream, the differential motion vector and a predictive motion vector index for indicating which candidate predictive motion vector is selected as the predictive motion vector among the candidate predictive motion vectors, where the deriving of the candidate predictive motion vectors includes: deriving a first candidate predictive motion vector based on adjacent blocks located at left side of the current block; and deriving a second candidate predictive motion vector based on adjacent blocks located at upper side of the current block.


The present invention provides a method for non-invasively detecting, expecting, or diagnosing fetal single nucleotide polymorphisms and the resultant monogenic disorders, through maternal cell-free DNA sequencing. The diagnosis method according to the present invention does not harm mothers or fetuses and is convenient, in that analysis is possible using maternal blood samples; and can be favorably used for a prenatal diagnosis method capable of determining at an early stage whether single nucleotide polymorphisms causing monogenic disorders occur or not.

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