Abstract: A method and an apparatus for controlling screen display in a portable terminal are provided. In the method, whether a screen touch occurs is determined. When the screen touch occurs, whether the screen touch corresponds to a spiral touch is determined using coordinates at which the screen is touched. When the screen touch is the spiral touch, the screen is magnified or reduced.

Abstract: An apparatus and method for providing a coupon service in a mobile communication system are provided. A method of operating a user terminal for providing a coupon service in a mobile communication system includes receiving coupon information of one or more shops that exist within a specified range around the user terminal from a Social Network Service (SNS) server, displaying the received coupon information, and generating a coupon by using the coupon information of the shop at the request of the coupon information, wherein the SNS server receives coupon information uploaded from a vendor terminal and Global Positioning System (GPS) information of a shop capable of using the coupon service.

Abstract: A method and an apparatus produce and reproduce Augmented Reality (AR) contents in a mobile terminal. In the method, contents are produced. An image including an object corresponding to the contents is recognized. Recognition information for the object corresponding to the contents is obtained based on a recognition result. AR contents including the contents and the recognition information are generated. Therefore, AR contents for an input image may be easily produced and reproduced, and the AR contents may be used as independent multimedia contents, not an auxiliary means of other contents.

Abstract: An apparatus and method display a world clock on the basis of an Augmented Reality (AR) scheme in a portable terminal. The method for displaying information in the portable terminal includes obtaining camera image data from a camera. The method also include searching for a city corresponding to a camera location and a camera viewpoint direction on the basis of a memory. The method further includes obtaining information on the found city and displaying the obtained information on the found city by compositing the information into the obtained camera image data.

Abstract: A method and apparatus generate a face animation in a computer system. An input of a face image is received. A head model and a skull model are determined for the face image. The head model is matched with the skull model, and a face model is generated. At least one parameter for the generated face model is adjusted according to an expression of the input face image, thus being capable of allowing a user to easily generate a face model and a facial animation with various expressions without manually adjusting various parameters.

Abstract: A ray tracing method and apparatus in a 3-Dimensional (3D) image system. The method includes sampling for four vertexes of each pixel in a plurality of pixels, sampling for a pivot of the each pixel, and determining a color of the each pixel using the sampling result on the four vertexes and the pivot.

Abstract: An apparatus for encoding and decoding key data and key value data of a coordinate interpolator and a recording medium, on which a bitstream, into which a coordinate interpolator is encoded, is written, are provided. The bitstream includes key data encoding/decoding information, into which key data and information necessary to decode the key data are encoded, and key value data encoding/decoding information, into which key value data and information necessary to decode the key value data are. encoded.

Abstract: A clock signal within an application-specific integrated circuit (ASIC) is characterized while operating a subsystem. Subsequently, also on the ASIC, a testing clock signal is generated, based on the characterization of the operative clock signal, for purposes of testing the subsystem operating according to the testing clock signal instead of the clock signal. The ASIC includes a clock signal characterization circuit configured to characterize a clock signal within the ASIC; a programmable testing clock signal generator configured for being programmed based on said characterization of the clock signal, and for generating a test clock signal based on its said programming; and the subsystem tested when operating according to the testing clock signal instead of the clock signal.

Abstract: A point-based rendering apparatus, method and medium. The point-based rendering apparatus includes a projector to project a point model and to generate a plurality of rendered points, a radius calculator to calculate a radius, corresponding to a predetermined resolution of each of the rendered points, and a splat generator to generate at least one of a hemi-spherical and a spherical splat having the radius of each of the rendered points.

Abstract: A method and an apparatus for encoding/decoding key value data of a coordinate interpolator used in a three-dimensional graphic animation are provided.

Abstract: An apparatus for encoding and decoding key data and key value data of a coordinate interpolator and a recording medium, on which a bitstream, into which a coordinate interpolator is encoded, is written, are provided. The bitstream includes key data encoding/decoding information, into which key data and information necessary to decode the key data are encoded, and key value data encoding/decoding information, into which key value data and information necessary to decode the key value data are encoded. The key data encoding/decoding information includes inverse DND operation information including the order of inverse DND indicating a predetermined number of cycles of inverse DND to be performed on differential data generated by entropy-decoding the bitstream in order to extend the range of the differential data.

Abstract: A method, medium, and system of rendering image data, including receiving three-dimensional space data for each pixel forming the image data, the three-dimensional space data including depth and color information values for each pixel, determining an order of rendering for a plurality of surfaces forming the image data in an order of the distance between a rendering viewpoint and the surface forming the image data, generating splat depth information values for each splat included in the surface forming the image data, according to the rendering order, and determining whether the splat included in the surface forming the image data is required to be blended and accordingly selectively performing a blending on the splat.

Abstract: An apparatus and a method for encoding and decoding key data are provided.

Abstract: A method and an apparatus for encoding and decoding a position interpolator including key data and key value data are provided. The method for encoding a position interpolator includes (b) generating key data and key value data to be encoded by extracting, from a first animation path constituted by the position interpolator, a minimum number of break points, which can bring about an error of no greater than a predetermined allowable error limit between the first animation path and a second animation to be generated by the extracted break points, (d) encoding the key data generated in step (b), and (e) encoding the key value data generated in step (b).

Abstract: A method and apparatus for rendering 3D graphic data is provided. The 3D graphic data is projected onto a 2D screen and points are interpolated and rendered, thereby quickly processing the 3D graphic data.

Abstract: Disclosed are, inter alia, methods, apparatus, mechanisms, and means for characterizing a clock signal within an application-specific integrated circuit (ASIC), and then, also on the ASIC, generating a testing clock signal based on the characterization of the operative clock signal for testing purposes. An ASIC includes a clock signal characterization circuit configured to characterize a clock signal within the ASIC; and a programmable testing clock signal generator configured for being programmed based on said characterization of the clock signal, and for generating a test clock signal based on its said programming.

Abstract: A system and method for programmable in-situ launch and capture clock generation is provided. The system provides an efficient and improved manner for delay and signal transition fault testing in electronic circuits. The system comprises i) an in-situ delay clock generator for generating one or more clocks; ii) a pulse Programmable Selection Generator (PSG) which can be either a pulse PSG and/or an expanded pulse PSG for generating the sequence in which the clocks are to be selected, the clocks being selected with a delay; and iii) a multiplexer for selecting the plurality of clocks, based on the generated sequence, the selected clocks being used for generating the launch and capture clocks.

Abstract: A method and an apparatus for encoding and decoding an orientation interpolator indicating the locations of keyframes on a temporal axis and the rotation of an object in each of the keyframes are provided.

Abstract: A method and an apparatus for encoding key value data of an orientation interpolator representing the rotation of an object in a keyframe image are provided. The apparatus includes a rotational differential data generator which generates, using a rotational transformation value of a current keyframe and a restored rotational transformation value of a previous keyframe, a rotational differential value used to rotate the object by as much as a difference between rotational transformation applied to the object in the current keyframe by key value data and rotational transformation applied to the object in the previous keyframe by key value data, and outputs rotational differential data by quantizing the rotational differential value, a circular DPCM operator which selectively performs a linear DPCM operation or a circular DPCM operation on rotational differential data, and an entropy encoder which entropy-encodes the rotational differential data.

Abstract: A DPCM operation which can reduce the size of differential data and a method and an apparatus for encoding data using the DPCM operation are provided. A method for generating differential data includes generating differential data by performing a DPCM operation on quantized data and generating predicted differential data by performing a predicted DPCM operation on the quantized data, generating circular-quantized differential data and circular-quantized predicted differential data by performing a circular quantization operation on the differential data and the predicted differential data so as to reduce their ranges, and selecting one of the circular-quantized differential data and the circular-quantized predicted differential data depending on their magnitudes.