Abstract: A method and apparatus remove noise from video or still image signals by rebuilding video or still image signals received via a communication channel in blocks and converting the blocks into data in the frequency domain. The noise reduction method includes: classifying a received original signal into predetermined size blocks; decomposing a received signal into a predetermined number of equal sized blocks; generating at least one rebuilt signal by removing first predetermined numbers of pixels from the beginning of the decomposed signal and second predetermined numbers of pixels from the end of the decomposed signal; and removing noise in the frequency domain by converting the original signal and the rebuilt signals into signals in the frequency domain. As a result, noise in still image and video signals is effectively removed.

Abstract: A method of and apparatus for adaptively encoding a motion image by using characteristics of the motion image are provided. The method involves (a) calculating temporal complexity of a predetermined section of input image data; (b) determining a frame rate for the predetermined section based on a result of comparing the calculated temporal complexity with a predetermined threshold value; and (c) virtually adjusting a frame rate of the predetermined section based on the determined frame rate.

Abstract: A digital broadcasting signal transmitting apparatus receives a digital broadcasting signal containing a video signal, an audio signal and data of additional information, encodes the digital broadcasting signal, converts into a predetermined transmission type, and transmits the converted signal, and includes a video analyzing portion that determines a bit rate allocated to the video signal and to the data of the additional information in accordance with the input video signal, and then outputs the determined bit rates, a video encoder that encodes the input video signal in accordance with the bit rate allocated to the video signal, and a data formatting portion that receives the data of the additional information as much as the bit rate allocated to the additional information, and then converts the received data into a predetermined data broadcasting format. Accordingly, a considerably increased amount of data of additional information can be transmitted.

Abstract: A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quantizing the transformed input image using the selected quantization matrix.

Abstract: A method and apparatus for encoding a video signal with a variable bit rate are provided. The method for encoding the video signal with the variable bit rate includes: (a) calculating a complexity for each of a plurality of pictures on the basis of a bit amount and a quantization parameter of a previous frame; (b) calculating a remaining bit amount for each picture in proportion to the complexity for each picture calculated in (a); (c) calculating a quantization parameter of a current frame on the basis of the complexity for each picture and the remaining bit amount for each picture calculated in (b); and (d) comparing the quantization parameter of the current frame calculated in (c) with a predetermined minimum quantization parameter and determining a final quantization parameter.

Abstract: There is provided a segment-based pixel processing apparatus and method for effective use of memory. The method includes dividing pixel data within a frame into a plurality of segments in the vertical direction; sequentially pre-processing or post-processing pixel data in a segment among the plurality of segments in line units, and then, sequentially pre-processing or post-processing pixel data in a next segment in line units; and repeating pre-processing or post-processing on pixel data in the other segments in line units until reaching a segment of a predetermined number.

Abstract: Provided are a video encoding/decoding method, in which a motion between interlaced video frames is estimated and/or compensated, and a video encoding/decoding apparatus. In this method, first, a macroblock and a search range are received, and a frame motion vector for each integer pixel is estimated. Next, if the vertical component of the estimated frame motion vector is an odd value, the bottom field pixels in the received macroblock are matched with top field pixels in a reference frame that correspond to motion vectors obtained by scaling the vertical component of the original motion vectors depending on a field-to-field distance. If the vertical component of the original frame motion vector is an even value, the top or bottom field pixels in the received macroblock are matched with the top or bottom field pixels in the reference frame that correspond to the original frame motion vector.

Abstract: A three-dimensional de-interlacing method and apparatus for converting an interlaced scan format image into a progressive scan format image by performing low pass filtering on respective predetermined pixels of a current frame and a previous frame and determining pixel motion index values by comparing a threshold value to a difference value between the respective filtered pixels in a current field in one of the current and previous frames and corresponding respective filtered pixels in preceding and succeeding fields to the current field and in the current and previous frames. A motion mode of a pixel is determined based upon the determined motion index values of temporally and spatially adjacent pixels to the pixel. A spatial interpolation or temporal interpolation on the subjected pixel is selected depending on the determined motion mode.

Abstract: A motion image encoding apparatus for a current image containing an object uses mesh representation for encoding a motion image. The encoding apparatus includes an object extractor for extracting the object contained in the current image from received current image data and outputting object contour data indicating a contour of the extracted object. A predictive encoder performs a predictive encoding operation using the current image data, prestored data of a reference image, and control points of meshes which divide one of the current image and the reference image, and generates motion information relating to the control points, differential data between the current image and the reference image, and predictive image data.

Abstract: A data processing method and an apparatus thereof, which process EIA-775 OSD graphic data received from the outside based on IEEE 1394 standards by using a combined software/hardware method. The data processing apparatus using a combined software/hardware method includes a first data processor, in response to an interrupt control signal, for analyzing predetermined data among graphic data received from the outside based on IEEE 1394 standards and processing the same to output control data, a second data processor for outputting an interrupt control signal to process the predetermined data when the graphic data is received from the outside based on IEEE 1394 standards, and for calculating a destination address and the size of graphic data excluding the predetermined data to be output according to the control data, and a graphic processor for mixing video data with the graphic data, of which the destination address and the size are calculated.

Abstract: An apparatus and a method of sending/receiving video on demand (VOD) streaming service according to providing client-favored advertisement. A VOD server and a VOD client terminal tie the VOD streaming service to client advertisement selection interactions, such as advertisement receipt selections, advertisement selection attributes (e.g., type, mode, etc.). The VOD server comprises a service controller providing to clients multimedia contents and specific advertisement contents selected by the clients to receive and a data storing unit storing the multimedia contents, the advertisement contents, and the client data.

Abstract: A method and apparatus to estimate a motion using searched motion vectors, and an image encoding system adopting the method and apparatus are provided. The motion between lower level frame data is estimated to obtain search points with minimum Sum of Absolute Differences (SADs). The search points are used as a based motion vector. Searches are performed on both upper level frame data and upper level field data using the based motion vector and search points are obtained with minimum SADs. The search points obtained from the searches on the upper level frame data and upper level field data are used as frame and field motion vectors.

Abstract: A method and apparatus control the amount of a DCT computation performed for motion image encoding. In the DCT computation amount controlling method, first, both decoder complexity information that represents the amount of a decoding computation on previous image data and ME computation amount variation information that represents information on a variation in the amount of a motion estimation (ME) computation are received. Then, the skipping of DCT operations on current image data is controlled based on the received decoder complexity information and the received ME computation amount variation information. A computation amount allowed to a decoder may be fully used, and the computation complexity of a motion image encoder may be maintained constantly regardless of the characteristics of images.

Abstract: In a method of adaptively encoding input image data of a motion image in accordance with a temporal complexity of the motion image, and an apparatus therefore, the temporal complexity of the input image data is calculated. Next, an original frame rate of the input image data is converted into a converted frame rate based on the calculated temporal complexity. Thereafter, the input image data whose frame rate has been converted is encoded, and the encoding data of the encoded image data is controlled so that the encoded image data has information on the converted frame rate. Accordingly, the input image data is encoded at different frame rates in accordance with the temporal complexity of the input image data. Consequently, the encoded input image data is efficiently stored.

Abstract: Disclosed is an aqueous alloy plating solution for surface treatment of a modular PCB. The plating solution comprises 1-30 wt % of an organic acid having at least one sulfonic acid group (—SO3H), 0.1-20 wt % of a complexing agent, 0.1-15 wt % of a thio-compound having at least one —S—, 0.05-5 wt % of a water soluble gold compound, 0.001-1 wt % of a water soluble silver compound and 0.1-10 wt % of a sequestering agent, based upon the weight of the plating solution. According to this invention, all plating properties required for the modular PCB are obtained through a single plating process, instead of the conventional double plating process.

Abstract: A method and an apparatus adaptively encode a motion image based on temporal and/or spatial complexity. In the method, encoding is performed with different temporal and spatial resolutions at frame rates based on the temporal and/or spatial complexity of an input image so that image data is stored with high efficiency. The method includes calculating a spatial complexity of input image data, determining a resolution by comparing the calculated spatial complexity with a predetermined threshold, and converting the resolution of the input image data based on the resolution.

Abstract: A method and apparatus to encode a moving picture data for a personal video recorder (PVR) and a retrieval of a content-based picture. In the method to encode the moving picture data the moving picture data having a plurality of frames is segmented into a group of pictures (GOP) including an I frame (intrapicture), a B frame (bi-directionally predicted picture), and a P frame (predicted picture) and is encoded. A boundary between shots is extracted from the inputted video data. The method and apparatus determine whether a frame to be encoded is a first frame (boundary frame) of a next shot. The GOP is terminated in a frame (previous frame) right before a key frame, and a new GOP starts from the boundary frame when the frame to be encoded is the boundary frame.

Abstract: A method, a computer readable storage, and an apparatus estimate a motion of a moving image and comprising a process of adjusting a number of search points per frame by adaptively updating a threshold value per frame to regularly maintain fixed a computational complexity of a video encoder irrespective of characteristics of the moving image.

Abstract: Disclosed are a conversion coating composition for use in the surface treatment of a PCB and a conversion coating method using the same. The composition comprises 0.1-30 vol % of sulfuric acid; 0.1-15 vol % of hydrogen peroxide; 0.01-10 wt % of an organic acid; 0.1-30 wt % of a nitrogen compound; 0.01-10 wt % of an organic silicate and/or organic titanate; and 0.1-20 wt % of a film forming auxiliary, 0.1-30 wt % of an etching rate controller, 0.1-20 wt % of a reaction promoter and/or 0.1-20 g/l of a stabilizer. This composition is applied to a PCB at 10-60° C. for 1-10 min. The conversion coating film is superb in adhesive strength, acid resistance, and adhesion and can be formed with ease.

Abstract: A digital broadcasting signal transmitting apparatus receives a digital broadcasting signal containing a video signal, an audio signal and data of additional information, encodes the digital broadcasting signal, converts into a predetermined transmission type, and transmits the converted signal, and includes a video analyzing portion that determines a bit rate allocated to the video signal and to the data of the additional information in accordance with the input video signal, and then outputs the determined bit rates, a video encoder that encodes the input video signal in accordance with the bit rate allocated to the video signal, and a data formatting portion that receives the data of the additional information as much as the bit rate allocated to the additional information, and then converts the received data into a predetermined data broadcasting format. Accordingly, a considerably increased amount of data of additional information can be transmitted.