Abstract: A video encoding apparatus and method using a pipeline technique with a variable time slot are provided. More particularly, a video encoding apparatus and method capable of shortening a video encoding time by variably adjusting lengths of time slots when an H.264 video encoding process is performed in a pipeline structure are provided. The video encoding apparatus includes a plurality of functional blocks that perform video encoding steps based on an H.264 standard for macroblocks configuring input digital video signals in a pipeline structure, and a controller that controls lengths of time slots configuring the pipeline structure based on done signals received from the plurality of functional blocks. Lengths of time slots can be adjusted according to operation times of video encoding steps using done signals generated from functional blocks, thereby preventing unnecessary power consumption and delays when using a fixed-length time slot.

Abstract: The invention provides photoresist resin compositions and in particular, a photoresist resin compositions comprising a) an acrylate monomer having two urethane bonds, b) a crosslinkable urethane monomer having at least two ethylene double bonds, c) an alkali-soluble compound, d) a photopolymerization initiator and e) a solvent, and a photoresist dry film resists using the photoresist resins. The photoresist resin compositions and the photoresist dry film resists using the same in accordance with the invention have excellent adhesion to a substrate and sandblast resistance and at the same time, they have high sensitivity as well as high resolution, thereby enabling fine pattern formation on substrates.

Abstract: The present invention provides a Pb free Ag paste composition for a PDP address electrode comprising a) 60 to 90% by weight of an Ag powder; b) 1 to 10% by weight of a Pb free inorganic binder; c) 0.001 to 1% by weight of an inorganic thickener; and d) 5 to 38% by weight of an alkali-soluble, negative photoresist composition for fine conductive powder dispersion. The Pb free Ag paste composition according to the invention i) is environment-friendly by using a Pb free inorganic binder, ii) is suitable for the fabrication of fine electrodes by using the prior electrode formation processes, iii) can apply the formed pattern to low temperature sintering processes of not higher than 600° C., iv) does not use a surfactant and stabilizer and has excellent printing, leveling and sintering performances by using an inorganic thickener and conductive Ag powder, and v) enables sintering to be carried out at a sintering target temperature without binder burning off zone.

Abstract: The present invention relates to an alkali-soluble photosensitive resin composition and a dry film resist using the same, more particularly to a photosensitive resin composition having superior heat resistance, chemical resistance and long-time stability and good adhesivity to a Cu or ITO (indium tin oxide) substrate by containing an acrylate resin, which is effective in improving adhesivity, and a photosensitive dry film resist using the same.

Abstract: A hardware structure for adaptively prediction coding an image signal using spatial correlation and a method therefor are provided. The prediction coding apparatus has a packet change detection unit which determines whether or not blocks used to determine a prediction direction for a current block for which prediction is currently performed is included in a same packet to which the current block belongs; a prediction reference value providing unit which provides a prediction reference value used in prediction according to the result of determination by the packet change detection unit; and a prediction calculation unit which outputs a predictive coded value or a predictive decoded value using the prediction reference value provided by the prediction reference value providing unit and the DCT component of the current block according to an operation mode. According to the apparatus and method, the size of a prediction apparatus is reduced, and one apparatus is used both in coding and decoding.

Abstract: The present invention provides a Pb free Ag paste composition for a PDP address electrode comprising a) 60 to 90% by weight of an Ag powder; b) 1 to 10% by weight of a Pb free inorganic binder; c) 0.001 to 1% by weight of an inorganic thickener; and d) 5 to 38% by weight of an alkali-soluble, negative photoresist composition for fine conductive powder dispersion. The Pb free Ag paste composition according to the invention i) is environment-friendly by using a Pb free inorganic binder, ii) is suitable for the fabrication of fine electrodes by using the prior electrode formation processes, iii) can apply the formed pattern to low temperature sintering processes of not higher than 600° C., iv) does not use a surfactant and stabilizer and has excellent printing, leveling and sintering performances by using an inorganic thickener and conductive Ag powder, and v) enables sintering to be carried out at a sintering target temperature without binder burning off zone.

Abstract: The invention provides photoresist resin compositions and in particular, a photoresist resin compositions comprising a) an acrylate monomer having two urethane bonds, b) a crosslinkable urethane monomer having at least two ethylene double bonds, c) an alkali-soluble compound, d) a photopolymerization initiator and e) a solvent, and a photoresist dry film resists using the photoresist resins. The photoresist resin compositions and the photoresist dry film resists using the same in accordance with the invention have excellent adhesion to a substrate and sandblast resistance and at the same time, they have high sensitivity as well as high resolution, thereby enabling fine pattern formation on substrates.

Abstract: An apparatus and a method for performing mixed motion estimation based on a hierarchical search are provided. In the method, motion vectors of previous image data are received. The median value of the motion vectors is obtained. Current image data is received. Motion of the current image data is compensated for based on the median value of the motion vectors. SAD values of the previous image data are received and the maximum value of the SAD values is obtained. The motion compensation result is compared with the maximum value of the SAD values. Motion estimation of the current image data is skipped and the motion compensation result is output if the motion compensation result is smaller than the maximum value of the SAD values. Motion estimation for the current image data is performed if the motion compensation result is greater than or equal to the maximum value of the SAD values, and the motion estimation result is output.

Abstract: In the present invention, a reference block data within a current image from which a motion vector will be obtained and corresponding search region data within reproduced previous image are stored in a reference block and a search region data memory, respectively. A motion vector of two pixels unit is performed using the reference block and the search region data stored in the memory, thus resulting in obtained a motion vector of two pixels unit. At this time, the reference block and the search region data are used by performing 2:1 sampling in a horizontal direction and a vertical direction, respectively and the search range is ?7˜+7. The structure of the motion search is consisted of a memory for storing a reference block (8×8) of current images and a memory (24×8) for storing a search region storing reproduced previous images.

Abstract: A motion estimation apparatus is provided. The motion estimation apparatus includes a demultiplexer which receives a selection flag from a user and current image data, and selectively outputs the current image data using one output terminal selected from a plurality of output terminals by the selection flag, a motion estimator which performs a motion estimation operation on the current image data using one motion estimation algorithm selected from a plurality of motion estimation algorithms depending on the output of the demultiplexer, and outputs a motion vector, and a multiplexer which receives the selection flag and outputs the motion vector in response to the selection flag.

Abstract: A hardware structure for adaptively prediction coding an image signal using spatial correlation and a method therefor are provided. The prediction coding apparatus has a packet change detection unit which determines whether or not blocks used to determine a prediction direction for a current block for which prediction is currently performed is included in a same packet to which the current block belongs; a prediction reference value providing unit which provides a prediction reference value used in prediction according to the result of determination by the packet change detection unit; and a prediction calculation unit which outputs a predictive coded value or a predictive decoded value using the prediction reference value provided by the prediction reference value providing unit and the DCT component of the current block according to an operation mode. According to the apparatus and method, the size of a prediction apparatus is reduced, and one apparatus is used both in coding and decoding.

Abstract: An apparatus for motion estimation with control part implemented by state transition diagram without adding delay circuits to processing elements, and capable of maintaining a regular data flow and easily implementing hardware to improve a power consume and speed is disclosed. The apparatus comprises a first and second storage parts for storing data; a measurement part for finding an absolute difference between the data; a step decision part for determining a minimum value; and a control part implemented by state transition diagram.

Abstract: An apparatus and a method for performing mixed motion estimation based on a hierarchical search are provided. In the method, motion vectors of previous image data are received. The median value of the motion vectors is obtained. Current image data is received. Motion of the current image data is compensated for based on the median value of the motion vectors. SAD values of the previous image data are received and the maximum value of the SAD values is obtained. The motion compensation result is compared with the maximum value of the SAD values. Motion estimation of the current image data is skipped and the motion compensation result is output if the motion compensation result is smaller than the maximum value of the SAD values. Motion estimation for the current image data is performed if the motion compensation result is greater than or equal to the maximum value of the SAD values, and the motion estimation result is output.

Abstract: In the present invention, a reference block data within a current image from which a motion vector will be obtained and corresponding search region data within reproduced previous image are stored in a reference block and a search region data memory, respectively. A motion vector of two pixels unit is performed using the reference block and the search region data stored in the memory, thus resulting in obtained a motion vector of two pixels unit. At this time, the reference block and the search region data are used by performing 2:1 sampling in a horizontal direction and a vertical direction, respectively and the search range is −7˜+7. The structure of the motion search is consisted of a memory for storing a reference block (8×8) of current images and a memory (24×8) for storing a search region storing reproduced previous images.

Abstract: An error detection circuit for detecting errors occurring in a data obtained by decoding a compressed image data block by block in a line length decoding system, includes a first storage device for temporarily storing the run representing the number of zeros (‘0’s) in the compressed image data and an EOB signal externally inputted, a selection signal generator for generating a first and a second selection signal in response to the EOB signal supplied from the first storage device, a first selection circuit for selectively transferring the run supplied by the first storage device or ground signal according to the first selection signal, a second selection circuit for selectively transferring the run supplied by the first storage device or ground signal according to the second selection signal, a reference value generator for generating a reference value based on the output signal of the first selection circuit according to an operation control signal externally inputted, accumulator for accumulatin

Abstract: A video data run length decoding apparatus is disclosed.