Patent application number | Description | Published |
20080232467 | Image Decoding Method - There is provided an image decoding method for decoding a picture to be decoded by referencing an appropriate picture even when random access reproduction is performed. The method includes: a first storage step (S | 09-25-2008 |
20080279280 | MOVING PICTURE DECODING INTEGRATED CIRCUIT - A moving picture decoding device includes a cache memory for storing a reference picture, in addition to a multi-frame memory (external memory) for storing reference pixel data of a plurality of reference pictures, for processing of a HD image size large in angle of view. A reference structure analyzer analyzes the reference structure of pictures. A reference picture manager not only writes a reference picture high in the possibility of being referred to by an object picture to be decoded in the multi-frame memory but also stores such a reference picture in the cache memory, using the analysis results of the picture reference structure. This minimizes the capacity of the cache memory and also reduces the data transfer amount from the external memory. | 11-13-2008 |
20090110077 | IMAGE CODING DEVICE, IMAGE CODING METHOD, AND IMAGE CODING INTEGRATED CIRCUIT - When compression encoding processing of an image is performed in units of macroblocks using pipeline structure, application of the skip mode or the like according to MPEG4AVC to compression encode an encoding target block requires motion vectors and the like of adjacent blocks of the encoding target block. However, depending on the structure of the pipeline stages, the motion vectors and the like may not be determined. In such cases, the skip mode cannot be applied to compression encode the encoding target block. The present invention aims to solve this problem and (i) calculates all motion information candidates, of the encoding target block, corresponding to all motion information selectable by a previous block of the encoding target block, and (ii) selects, as the motion information of the encoding target block in the skip mode, the motion information corresponding to the motion information determined for the previous block. | 04-30-2009 |
20100027971 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 02-04-2010 |
20100086053 | MOTION ESTIMATION DEVICE, MOTION ESTIMATION METHOD, AND MOTION ESTIMATION PROGRAM - A motion estimation device executes motion estimation for a macroblock in a current picture, using pixel data of a reference picture in a multi-frame memory ( | 04-08-2010 |
20100195922 | IMAGE DECODING APPARATUS, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, AND IMAGE CODING METHOD - To provide an image decoding apparatus that suppresses overhead of parallel processing to improve parallelization efficiency and reduce circuit costs, while solving neighboring macroblock dependencies. The image decoding apparatus ( | 08-05-2010 |
20100232496 | DECODING-PROCESSING APPARATUS AND METHOD - A decoding-processing apparatus that decodes bitstreams using an intermediate format. The apparatus includes a context-calculating unit ( | 09-16-2010 |
20100232516 | DECODING-PROCESSING APPARATUS AND METHOD - A decoding-processing apparatus that decodes bitstreams using an intermediate format. The apparatus includes a context-calculating unit ( | 09-16-2010 |
20100290523 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 11-18-2010 |
20100290758 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 11-18-2010 |
20110122952 | MOTION ESTIMATION DEVICE - A motion estimation device configured to estimate motion for blocks included in an input picture using a reference picture includes an internal reference memory configured to store the reference picture transferred from outside the motion estimation device; a motion estimator configured to estimate motion information for a target block that is a block of the input picture and where motion is to be estimated, using pixel data of the reference picture stored in the internal reference memory; a motion compensator configured to perform motion compensation for the target block using the motion information estimated by the motion estimator; and a reference memory manager configured to control the internal reference memory. The reference memory manager is configured to control the internal reference memory to store a luminance reference picture and a color-difference reference picture as the reference picture. | 05-26-2011 |
20110200115 | IMAGE DECODING APPARATUS AND IMAGE CODING APPARATUS - An image decoding apparatus ( | 08-18-2011 |
20120281765 | MOTION COMPENSATING APPARATUS - Provided is a motion compensating apparatus that includes: a motion compensation position determining unit that determines, based on a motion vector, a position of pixels for which compensated pixels should be generated; a necessary pixel determining unit that determines pixels necessary for performing 6-tap filtering; a data transfer controlling unit that controls the order or the like of taking out data to be transferred; an intermediate pixel storage memory for storing pixel data with half-pixel accuracy; a high-order tap filtering unit that generates pixel data with half-pixel accuracy by successively performing filtering operations in a predetermined direction; and a linear interpolation calculating unit that performs linear interpolation based on the position of pixels to be motion compensated, and generates and outputs pixel data with motion compensation accuracy of less than half-pixel accuracy. | 11-08-2012 |
20140064358 | DECODING METHOD FOR DECODING AN INCOMING BITSTREAM AND METHOD FOR PERFORMING THE SAME - There is disclosed a decoding method for decoding an incoming bitstream entropy-encoded according to an encoding method based on either of arithmetic encoding algorithm and non-arithmetic encoding algorithm, the incoming bitstream including syntax elements. The decoding method includes a first converting step of converting the incoming bitstream into an intermediate bitstream according to the encoding method, the first converting being capable of being omitted, a buffering step of selecting, according to the encoding method, either the intermediate bitstream or the incoming bitstream to store the selected bitstream onto a memory, and a second converting step of reading the selected bitstream from the memory to convert the read bitstream into syntax elements, the read bitstream being either the intermediate bitstream or the incoming bitstream. | 03-06-2014 |
20150016507 | IMAGE DECODING APPARATUS FOR DECODING A TARGET BLOCK BY REFERENCING INFORMATION OF AN ALREADY DECODED BLOCK IN A NEIGHBORHOOD OF THE TARGET BLOCK - To provide an image decoding apparatus that suppresses overhead of parallel processing to improve parallelization efficiency and reduce circuit costs, while solving neighboring macroblock dependencies. The image decoding apparatus ( | 01-15-2015 |
20150085918 | IMAGE CODING DEVICE, IMAGE CODING METHOD, AND IMAGE CODING INTEGRATED CIRCUIT - When compression encoding processing of an image is performed in units of macroblocks using a pipeline structure, an application of a skip mode or the like according to MPEG4AVC to compression encode an encoding target block requires motion vectors and the like of adjacent blocks of the encoding target block. However, depending on a structure of the pipeline stages, the motion vectors may not be determined. In such cases, the skip mode cannot be applied to compression encode the encoding target block. This problem can be solved by (i) calculating all motion information candidates, of the encoding target block, corresponding to all motion information selectable by a previous block of the encoding target block, and (ii) selecting, as the motion information of the encoding target block in the skip mode, the motion information corresponding to the motion information determined for the previous block. | 03-26-2015 |