Electronics and Telecommunications Research Institute

Eung Don Lee

Jin Soo Choi

Jin Woong Kim

Sung-Hoon Kim

Hyun Jae Lee

Nam Ho Hur

Won Sik Cheong

Bong Tae Kim

Do Young Kim

Yong Ju Lee

Jin Woo Hong

Kyeongok Kang

Soo In Lee

Jeongil Seo

Gwang Soon Lee

Jong Mo Sung

Chan Soo Kim

Yun Jeong Song

Hong Chang Shin

Gi Mun Um

Chung Hyun Ahn

Chang-Joong Kim

Ho-Kyoung Lee

Kyoung-Hweon Lee

There are provided a method and apparatus for controlling an electronic device. The apparatus for controlling an electronic device includes a marker recognition unit configured to recognize the marker of the electronic device and a control unit configured to perform communication with the electronic device based on the marker and control the electronic device using a Graphic User Interface (GUI) program received from the electronic device.

Method and apparatus for controlling electronic device

A method of providing a realistic broadcasting image including an ultra high definition (UHD) image, the method including generating a first encoding stream from a high definition (HD) image, generating a second encoding stream from at least one of a UHD image and an image restored from the first encoding stream, generating a third encoding stream from at least one of the UHD image and an image restored from the second encoding stream, generating a first transmission stream by applying at least one of packetization, synchronization, and multiplying to the first encoding stream and the second encoding stream, generating a second transmission stream by applying at least one of packetization and synchronization to the third encoding stream, transmitting the first transmission stream via a first transmission channel, and transmitting the second transmission stream via a second transmission channel having a lower transmission capacity than the first transmission channel.

Method and system for providing realistic broadcasting image

A dual layer parallax barrier-based 3D display device may include an image panel that displays a left image and a right image so as to alternately display a left-image column and a right-image column, a dual layer parallax barrier that includes a first common electrode, a second common electrode, a plurality of first individual electrodes, a plurality of second individual electrodes, and a liquid crystal layer, and blocks specific portions of the displayed images and a driving unit that drives the electrodes based on the distance between the image panel and the viewer so as to allow the viewer to view the left image and the right image, separately, and simultaneously drives, in a particular state, at least one of the first common electrode and the plurality of first individual electrodes and at least one of the second common electrode and the plurality of second individual electrodes.

Dual layer parallax barrier-based 3D display device and method

A segmented dual layer parallax barrier-based 3D display device may includes an image panel that displays a left image and a right image so as to alternately display a left-image column and a right-image column; a dual layer parallax barrier that includes a first common electrode, a second common electrode, a plurality of first individual electrodes, a plurality of second individual electrodes, a plurality of segmented electrodes, and a liquid crystal layer, and blocks specific portions of the displayed images; and a driving unit that drives the electrodes based on the distance between the image panel and the viewer so as to allow the viewer to view the left image and the right image, separately.

Segmented dual layer parallax barrier-based 3D display device and method

A stereoscopic image panel according to the present invention includes: a liquid crystal layer; a first parallax barrier layer including a first electrode unit adjacent to one side of the liquid crystal layer and a second electrode unit opposite the other side of the liquid crystal layer; and a second parallax barrier layer including a third electrode unit opposite one side of the liquid crystal layer, between the liquid crystal layer and the first electrode unit, and a fourth electrode unit positioned adjacent to the second electrode unit, wherein the second electrode unit is positioned between the liquid crystal layer and the fourth electrode unit.

Stereo-scopic image panel, stereo-scopic image display apparatus having the same and driving method thereof

Provided is a transport packet generating apparatus that generates a transport packet having a variable length, and the length of the transport packet is indicated by a field included in a header of the transport packet or a synchronization area of the transport packet, in the field indicating a length of the transport packet. A transport depacketizing apparatus depacketizes the transport packet by decoding the field or detecting a starting point of the transport packet based on a predetermined rule with respect to the synchronization area to decode the transport packet.

Apparatus and method for generating an MPEG-2 transport packet having a variable packet length

Provided are a fixed codebook search method based on iteration-free global pulse replacement in a speech codec, and a Code-Excited Linear-Prediction (CELP)-based speech codec using the method. The fixed codebook search method based on iteration-free global pulse replacement in a speech codec includes the steps of: (a) determining an initial codevector using a pulse-position likelihood vector or a correlation vector; (b) calculating a fixed-codebook search criterion value for the initial codevector; (c) calculating fixed-codebook search criterion values for respective codevectors obtained by replacing a pulse of the initial codevector each time for respective tracks, and determining a pulse position generating the largest fixed-codebook search criterion value as a candidate pulse position for the respective tracks, respectively; (d) calculating fixed-codebook search criterion values for respective codevectors of all combinations obtained by replacing at least one pulse position of the initial codevector with the candidate pulse positions of the respective tracks, and determining the largest value of the fixed-codebook search criterion values; and (e) comparing the fixed-codebook search criterion value for the initial codevector obtained in step (b) with the largest value determined in step (d) to determine an optimum fixed codevector.

Fixed codebook search method through iteration-free global pulse replacement and speech coder using the same method

Provided are a combined, fixed codebook searching method and apparatus used in a code excited linear prediction (CELP) speech codec. The method is used in a code excited linear prediction (CELP) speech codec, and includes searching for a fixed codebook using a full search method that searches for the fixed codebook at all pulse positions; selecting a fixed codebook searching method by counting the number of users who are accessing a gateway, comparing the number of users with a predetermined threshold, and selecting a proper fixed codebook searching method based on the result of comparison; searching for the fixed codebook using the selected fixed codebook searching method; and checking whether the search for the fixed codebook is complete for all tracks of the CELP speech codec, terminating a routine of searching for the fixed codebook when it is determined the search is complete for all the tracks, and selecting a fixed codebook searching method again in consideration of the number of gateway users when there remains a track to be searched for. Accordingly, a fixed codebook searching method is selected in consideration of the number of users who are accessing a gateway, thereby enabling an effective adjustment of either the quality of sound or the channel capacity of the gateway.

Method and apparatus for searching for combined fixed codebook in CELP speech codec

There are provided a search method of a fixed codebook, and more particularly, a focused search method and apparatus thereof, for being applied to a speech codec for Voice over Internet Protocol (VoIP). The focused search method of the fixed codebook includes: calculating absolute values of correlation vectors of respective pulse locations of tracks 0, 1, 2, and 3 and arranging the pulse locations in a descending order of the absolute values; and selecting a predetermined number of pulse locations for each track among candidate pulse locations arranged and conducting focused search of the selected result. Therefore, it is possible to significantly reduce a calculation amount required for fixed codebook search while maintaining tone quality in a similar level.

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Daejeon-si, South Korea

Eung Don Lee