摘要:
Provided is a method, medium and system for storing image data for fast memory access. The method includes setting a storage range over neighboring macroblocks of a macroblock to allow for storage with the macroblock in a storage region of a memory, and storing first image data of the macroblock and second image data corresponding to the storage range over the neighboring macroblocks in the storage region of the memory, wherein the second image data includes data of portions of the neighboring blocks that fall within the storage range.
摘要:
Provided are an apparatus and method for effectively compressing and restoring edge areas in an image. Therefore, by predicting values of pixels positioned at each directional edge, among pixels constructing a 2×2 block in a current image, using values of neighbor pixels of the pixels positioned at each directional edge, selecting an edge mode corresponding to a directional edge in which the difference between the predicted values and actual values of the pixels is a minimum, and outputting edge mode data indicating the edge mode instead of the predicted values corresponding to the edge mode, it is possible to effectively compress edge areas in which little similarity exists between pixel values, and accordingly improve a compression rate of edge areas.
摘要:
A method, medium and system for setting a transfer unit in a data processing system. The method comprises setting a transfer unit in a data processing system which repeatedly performs a process of transmitting data stored in a first memory to a second memory in a predetermined transfer unit, processing the transmitted data stored in the second memory, and transmitting the processed data to the first memory. The method includes computing overhead on the data processing system according to the size of each of a plurality of data units available as the transfer unit; and setting a data unit, which corresponds to a minimum overhead from among the computed overheads, as the transfer unit. Accordingly, it is possible to set an optimum transfer unit according to an environment of a data processing system in order to improve the performance of the data processing system.
摘要:
Provided are a method, apparatus, and medium for controlling direct memory access (DMA). The apparatus includes a memory which is divided into a plurality of storage areas, a memory controller which is connected to the memory and comprises a plurality of ports, a plurality of DMA controllers which independently control access to data stored in each of the plurality of storage areas, and a plurality of buses which connect the memory controller and each of the plurality of DMA controllers. Using the apparatus, the time required in accessing the data can be remarkably reduced by employing the plurality of DMA controllers in order to perform parallel access to the data stored in each area of the memory.
摘要:
Disclosed are an image forming apparatus, a host apparatus, and a print method thereof. A method includes receiving a one touch print command from a print button provided in the image forming apparatus to print an image of at least one monitor among a plurality of monitors of a host apparatus connected to the image forming apparatus. With this configuration, high quality output products may be provided without any image distortion due to a difference in resolution upon receiving a one touch print command in the multi monitor environment.
摘要:
A system, medium, and method compressing and/or restoring images. Such a data compression method may include selecting a mode from among a plurality of modes for compressing current data, according to predetermined criteria, and calculating a difference between the current data and reference data, according to the selected mode, and compressing the current data, or truncating a part of the current data and compressing the current data. Accordingly, it is possible to significantly lower the complexity of an image encoder/decoder system and exactly meet a picture-based CBR required by LCD DCC devices/systems.
摘要:
Provided are a method and apparatus for compensating motion of a moving image. The method includes calculating a pixel value of a pixel located between pixels of a reference image corresponding to a current image based on pixel values of the pixels of the reference image by using at least one method from among a plurality of methods, such as a vertical linear filtering, a horizontal linear filtering, and a cubic filtering, of interpolating the pixels of the reference image according to codec information indicating one of a plurality of codecs, such as MPEG4, H.264/AVC, and VC1, and restoring the current image by adding motion compensation data, including the calculated pixel value, and a difference between the reference image and the current image.
摘要:
A method, medium, and system effectively compressing and/or restoring binary images. By compressing pixel values making up a 2×2 block in an input image, using representative values representing the pixel values and a pattern of the pixel values represented by the representative values, it is possible to effectively compress and/or restore binary images having little similarities between pixel values. In addition, by extracting compressed values and a pattern of pixel values making up a 2×2 block in an image, from compressed data of the 2×2 block, and restoring pixel values using the compressed values and the pattern, it is possible to effectively restore binary images.
摘要:
Provided are an audio data encoding method and apparatus including determining an initial scale factor value for each frequency band of the audio data according to a quantization error and a maximum permissible distortion level for each frequency band; comparing the initial scale factor value for each frequency band and a predetermined common scale factor value and determining a final scale factor value for each frequency band based on a comparison result; quantizing the audio data using the final scale factor value for each frequency band; and encoding the quantized audio data.
摘要:
Provided are methods of forming a material layer by chemically adsorbing metal atoms to a substrate having anions formed on the surface thereof, and a method of fabricating a memory device by using the material layer forming method. Accordingly, a via hole with a small diameter can be filled with a material layer without forming voids or seams. Thus, a reliable memory device can be obtained.