Patent application number | Description | Published |
20080212509 | APPARATUS AND METHOD FOR SELECTING, RELEASING, AND CHANGING MCBCS CHANNEL OF MOBILE STATION IN BROADBAND WIRELESS ACCESS SYSTEM - An apparatus and method for selecting, releasing, and changing a MultiCast and BroadCast Service (MCBCS) of a Mobile Station (MS) in a Broadband Wireless Access (BWA) system are provided. The method includes, upon receiving a request to select a specific channel, transmitting a channel selection request message for selecting the channel; determining whether a DSA request message including a Media Access Control (MAC) layer name tag for the channel is received from an Access Service Network-Gateway (ASN-GW), and, upon receiving the DSA request message, transmitting a DSA response message to the ASN-GW; and receiving a channel selection response message including information indicating a success or failure of the channel selection from an MCBCS server. Accordingly, there is an advantage in that an overall transmission delay is reduced for an MCBCS call process, and a processing capacity can be effectively utilized. | 09-04-2008 |
20090279796 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE - Provided are a method and apparatus for encoding and decoding an image. The method of encoding an image includes generating half-tone data by applying patterns specified by each color channel to input data, rearranging the generated half-tone data according to the characteristics of the applied patterns, and predicting the rearranged half-tone data and encoding the predicted half-tone data. Therefore, encoding and decoding can be performed more efficiently and a compression rate can be improved. | 11-12-2009 |
20090279797 | ENTROPY ENCODING AND DECODING METHOD AND APPARATUS USING LEAST SIGNIFICANT BIT - Provided are entropy encoding and decoding methods. The entropy encoding method includes receiving residual coefficients obtained by frequency converting a residual image, determining a first bit string about residual coefficients having nonzero levels from among the received residual coefficients, determining at least one lower bit, including a least significant bit of the first bit string, from the first bit string, and determining a second bit string obtained by bit-shifting the first bit string to the right by the number of lower bits. | 11-12-2009 |
20090279803 | METHOD AND APPARATUS FOR CONVERTING BIT-PLANE IMAGE, AND METHOD AND APPARATUS FOR INVERSE-CONVERTING BIT-PLANE IMAGE - Provided are methods and apparatuses for converting a lower bit-plane image, and methods and apparatuses for inverse-converting the lower bit-plane image, which increase the correlation of the lower bit-plane image. According to the method of converting a lower bit-plane image, pixels of the lower bit-plane image are sequentially added or subtracted so as to generate a converted lower bit-plane image. Accordingly, the lower bit-plane image has higher regularity, and thus the efficiency of image processing using the lower bit-plane image is improved. | 11-12-2009 |
20090285497 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS USING LEAST SIGNIFICANT BITS - Provided are an image processing method and image processing apparatus using least significant bits (LSBs). The image processing method includes generating first binary codes by converting pixel values of an input image into a binary code format; converting the first binary codes into gray codes and determining a predetermined number of sequential LSBs from among the gray codes; and generating second binary codes by converting the determined LSBs of the gray codes into the binary code format. | 11-19-2009 |
20100002943 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING IMAGE SEPARATION BASED ON BIT LOCATION - Provided are method and apparatus for encoding and decoding an image by using a bit plane-based image encoding method and a block-based image encoding method respectively on bit planes based on the n-m most significant bits of an input image including n-bit pixel values and an image based on the m least significant bits of the input image. | 01-07-2010 |
20100054615 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY USING ADAPTIVE BINARIZATION - A method and apparatus for encoding/decoding an image, wherein the method includes selecting a predetermined binarization table from a plurality of binarization tables based on prediction values of a current pixel and binarizing or inversely binarizing residual values by using the selected binarization table. | 03-04-2010 |
20100195924 | METHOD AND APPARATUS FOR SUCCESSIVELY ENCODING/DECODING IMAGE - Provided is a method and apparatus for compression encoding/decoding an image based on the repetition of an access unit and the repetition of a residual value. | 08-05-2010 |
20100232722 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BASED ON CODE TABLE SELECTION ADAPTED TO RESIDUAL VALUE DISTRIBUTION - A method and apparatus are provided for encoding and decoding an image which entropy encode and decode a residual value of a current pixel in consideration of a context model determined with reference to at least one pixel value that is encoded and decoded before the current pixel and distribution of the residual values encoded and decoded according to the determined context model. | 09-16-2010 |
20100265286 | HANDHELD PRINTER AND PRINTING METHOD THEREOF - A handheld printer and a printing method thereof are provided. The handheld printer receives distance information from at least one sensor positioned outside the handheld printer, determines its position based on the distance information, and determines data to be printed in the determined position. | 10-21-2010 |
20110026545 | METHOD AND APPARATUS FOR ENCODING AND DECODING DATA WITH ALTERED BIT SEQUENCE - Provided are methods and apparatuses for encoding data. One method of encoding data includes generating second data by altering locations of bits within first data to be encoded next based on values of bits within at least one piece of previously encoded data; and entropy-encoding the second data. Also provided are methods and apparatuses for decoding data. | 02-03-2011 |
20110064131 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BASED ON SKIP MODE - A method and apparatus for decoding an image are provided. The method includes: decoding information representing that a first block of the image has been encoded in a first mode; and reconstructing the first block by setting pixel values of the first block to be identical with pixel values of a second block of the image that is adjacent to the first block and has been decoded prior to the first block, wherein the first mode is a mode for encoding information representing that the first block is identical or similar to the second block and has been encoded in the first mode, instead of encoding the pixel values of the first block. | 03-17-2011 |
20110064132 | METHODS AND APPARATUSES FOR ENCODING AND DECODING MODE INFORMATION - Methods and apparatuses for encoding and decoding mode information of a block of an image. The method of decoding the mode information includes decoding information representing whether a current block is encoded in a first mode, and hierarchically decoding information representing an encoding mode of the current block from among a second mode and a third mode. | 03-17-2011 |
20110064133 | METHOD AND APPARATUS FOR ENCODING AND DECODING MODE INFORMATION - A method and apparatus for decoding hierarchical mode information including mode information indicating whether a current block is encoded in an encoding mode identical to an encoding mode of a plurality of consecutive previous blocks. | 03-17-2011 |
20110064324 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BASED ON SKIP MODE - A method and apparatus for encoding and decoding an image. The encoding method includes: deciding whether pixel values of a first block of an image are identical to pixel values of a second block of the image that is encoded prior to the first block in a current slice of the image, and determining whether to encode the first block in a first mode according to the deciding; and selectively encoding the first block in the first mode based on the determining, wherein the first mode is a mode for encoding information representing that the first block is encoded in the first mode, instead of encoding the pixel values of the first block, when the first block is identical or similar to the second block. | 03-17-2011 |
20110064325 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BASED ON SKIP MODE - An image encoding method and apparatus, and an image decoding method and apparatus respectively corresponding to the image encoding method and apparatus are provided. The image encoding method includes: if a current block is an initial block of a current slice, determining whether a virtual block in which pixel values are equal to a predetermined value is identical to the current block; and encoding the current block in a first mode based on the determining, wherein the first mode is a mode for encoding information representing that the current block is encoded in the first mode, instead of encoding pixel values of the current block, when the current block is identical to the virtual block. | 03-17-2011 |
20110116721 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE DATA USING RUN OF THE IMAGE DATA - An encoding method includes selecting a run detection method in accordance with characteristics of image data, generating a run value by detecting a run that is repeated in the image data in accordance with the selected run detection method, generating run count bits by counting the number of repetitions of the detected run, and performing a run-length encoding using the detected run values and the run count bits. The run detection method includes a coefficient run detection method that detects a run based on pixel values, a pattern run detection method that detects the run based on whether the pixel blocks have a specified pattern, a difference run detection method that detects the run based on a difference value between two successive pixel values, and a residual run detection method that detects the run based on an error value that is a difference value between an actual pixel value and a predicted value. | 05-19-2011 |
20110142122 | METHOD AND APPARATUS FOR TRANSMITTING VIDEO CONTENTS COMPRESSED BY CODEC - A method and apparatus for transmitting compressed video content are provided. The method includes transmitting a codec selection request frame, the codec selection request frame including an identifier of one or more codecs to be used to compress video content and requesting approval of the use of the codec, receiving a codec selection response frame, the codec selection response frame including result information indicating whether the use of the codec is approved, and transmitting video content frames for the video content compressed by the approved codec based on the codec selection response frame. Each video content frame includes frame type information indicating a type of compression applied to the video content included in the video content frame. | 06-16-2011 |
20110149806 | METHOD AND APPARATUS FOR SERVICE DISCOVERY IN WI-FI DIRECT NETWORK - A method and an apparatus for service discovery in a Wi-Fi direct (WFD). The method includes: generating by a first WFD device a service discovery request frame for discovering whether a service is supported by a second WFD device in the WFD network; transmitting the generated service discovery request frame from the first WFD device to the second WFD device; and receiving at the first WFD device a service discovery response frame from the second WFD device in response to the transmitted service discovery request frame, wherein the service discovery request frame and the service discovery response frame are generated by using a Wi-Fi protected setup (WPS) information element (IE). | 06-23-2011 |
20110206128 | METHOD AND APPARATUS FOR TRANSMITTING VIDEO CONTENT COMPRESSED BY CODEC - A method and apparatus of transmitting video content compressed by a codec to a second device is provided. The method includes: transmitting a codec selection request frame to the second device, the codec selection request frame includes an identifier of at least one codec to be used to compress the video content and requests approval of the use of the at least one codec; receiving a codec selection response frame from the second device, the codec selection response frame includes approval information indicating whether the use of the at least one codec is approved; and transmitting video content compressed by the at least one codec to the second device based on the codec selection response frame. | 08-25-2011 |
20110216784 | METHOD AND APPARATUS FOR GENERATING VIDEO PACKET - Methods and apparatuses for generating video packets are provided. A method of generating a video packet includes generating at least one pixel block including at least one reference pixel and at least one neighboring pixel adjacent to the at least one reference pixel from pixels of a video frame; replacing a pixel value of the at least one neighboring pixel in the at least one pixel block with a pixel difference value, which is a difference value between a pixel value of a pixel adjacent to the at least one neighboring pixel and the pixel value of the at least one neighboring pixel; and generating packets so that a pixel value of the at least one reference pixel and the pixel difference value of the at least one neighboring pixel are allocated to different packets according to positions of the pixels. | 09-08-2011 |
20110249730 | METHOD AND APPARATUS FOR GENERATING VIDEO PACKETS, METHOD AND APPARATUS FOR RESTORING VIDEO - A method and apparatus for generating video packets and a method and apparatus for restoring video are provided. The method of generating video packets includes: generating at least one pixel block consisting of at least one reference pixel and a plurality of neighboring pixels adjacent to the at least one reference pixel from pixels of a video frame; replacing pixel values of the neighboring pixels in the at least one pixel block with pixel difference values, which are difference values between a pixel value of one of pixels adjacent to the neighboring pixels and the pixel values of the neighboring pixels; generating packets so that a pixel value of the at least one reference pixel and the pixel difference values of the neighboring pixels are allocated to different packets according to positions of the pixels; and performing entropy coding of some of the packets including the pixel difference values of the neighboring pixels. | 10-13-2011 |
20110274177 | METHOD AND APPARATUS FOR PROCESSING VIDEO FRAME BY USING DIFFERENCE BETWEEN PIXEL VALUES - A method and apparatus for processing a video frame is provided. The method includes dividing the video frame into pixel blocks each including a reference pixel; calculating difference values between the reference pixel and pixels neighboring the reference pixel; converting the calculated difference values into values that belong to a bit depth range; and performing entropy coding by using the converted difference values as symbols. | 11-10-2011 |
20110282741 | METHOD FOR OFFERING ADVERTISEMENT ACCORDING TO SEARCH INTENTION SEGMENTATION AND SYSTEM FOR EXECUTING THE METHOD - Disclosed are an advertisement providing method and system. The advertisement providing method, including: defining a search intention for each keyword and a content type for each search intention; and providing, when a user inputs the keyword, an advertisement content list based on a search intention of the inputted keyword. | 11-17-2011 |
20120002718 | METHOD AND APPARATUS FOR SELECTING VIDEO CODEC TO BE USED BETWEEN STATIONS - Provided is a video codec selection method which includes transmitting, by a station management entity (SME) of a first station, a codec selection request primitive which requests approval of a use of at least one codec to be used for compression of at least one video stream to a protocol adaptation layer (PAL) of the first station, transmitting, by the PAL of the first station, a codec selection request frame which requests approval of the use of the at least one codec to a second station, and receiving, by the PAL of the first station, a codec selection response frame which indicates whether the use of the at least one codec is approved from the second station. | 01-05-2012 |
20120310748 | SYSTEM AND METHOD FOR MANAGING ADVERTISEMENTS BASED ON BENCHMARKING - Provided is a system and method for managing advertisements. The advertising management system may transfer information about advertising indices of other advertisers to be benchmarked to advertisers who are inexperienced in advertising management and may automatically modify bidding information of the inexperienced advertisers based on the advertising indices of the other advertisers, thereby preventing the inexperienced advertisers from leaving the search advertisement market. | 12-06-2012 |
20130142448 | METHOD AND APPARATUS FOR ENCODING BINARY IMAGE USING ADAPTIVE TEMPLATE AND METHOD AND APPARATUS FOR DECODING THE SAME - Provided are binary image encoding and decoding methods and binary image encoding and decoding apparatuses using an adaptive template. The binary image encoding method includes: applying a window having a predetermined size and shape to a predetermined number of previous pixels and peripheral pixels of the previous pixels, and acquiring correlations between the previous pixels and the peripheral pixels within the window; determining relative locations having high correlation with the previous pixels within the window based on the acquired correlations; generating a template based on the determined relative locations; and performing binary arithmetic encoding on a current pixel by using the generated template. | 06-06-2013 |
20140082685 | METHOD AND APPARATUS FOR ADJUSTING DATA TRANSMISSION RATE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting image data via a wireless channel, the method and apparatus involving dropping at least one pixel from every pixel block of the image data, so as to decrease a data rate of the image data, and transmitting the image data in which the at least one pixel is dropped. A method and apparatus for restoring image data via a wireless channel, the method and apparatus involving receiving the image data from which data values of at least one pixel is dropped, and restoring the dropped at least one pixel by referring to the data values of the at least one pixel. | 03-20-2014 |
20140101443 | METHOD AND APPARATUS FOR SELECTIVELY PROVIDING PROTECTION OF SCREEN INFORMATION DATA - A method and apparatus for enabling a cloud server to provide screen information data indicating a screen to be displayed on a client device are provided. The method of enabling a cloud server to provide screen information data relating to a screen to be displayed on a client device includes: generating the screen information data; determining whether or not to protect the generated screen information data based on characteristics of an object configuring the screen; encrypting the provided screen information data based on the determining; and transmitting the encrypted the screen information data to the client device. | 04-10-2014 |
20140119648 | METHOD AND APPARATUS FOR IMAGE DATA TRANSMISSION AND RECEPTION - A method of transmitting data, including obtaining luma element values and chroma element values of respective pixels included in a pixel block having a predetermined size; obtaining a plurality of partitions in which the luma element values and the chroma element values are based on a spatial position of the pixels in the pixel block; and selectively transmitting the plurality of partitions according to a data rate of the image data. | 05-01-2014 |
20140307075 | IMAGING APPARATUS AND CONTROL METHOD THEREOF - An imaging apparatus is provided. The imaging apparatus includes an imager configured to record an external image, a region determiner configured to divide a recorded previous image frame and a recorded current image frame into pluralities of regions, calculate a moving direction and a distance of each of the plurality of regions in the current image frame corresponding to each of the plurality of regions in the previous image frame, and determine a background and an object by applying a preset background model and object model based on the calculated moving direction and distance, and a posture determiner configured to determine body parts of the determined object based on a body part model, and determine a posture of the object by combining the determined body parts. | 10-16-2014 |
20140324953 | TERMINAL DEVICE AND CONTENT DISPLAYING METHOD THEREOF, SERVER AND CONTROLLING METHOD THEREOF - A terminal apparatus is disclosed. The terminal apparatus includes a display, a communicator configured to perform communication with a server, and a controller configured to, in response to a preset event, receive from the server a curated content based on a user information related to the preset event and control the display to display the content, wherein the preset event is related to an application operated separately from a server-only application. Accordingly, the terminal apparatus may extract a content based on user information and display the content. | 10-30-2014 |