Abstract: A circuit for reducing the transmission delay of the SDRAM by using a cascade-amplifying scheme. The circuit principally encompasses a memory array core for storing data, a main amplifier for initially amplifying the data, an MO-pair receiving amplifier for recognizing and amplifying the data, and an output neighborhood for outputting the data when the data convey a log data path. When the required data output from the memory array core is amplified by the main amplifier, the differential level of the required data will appear at both the far end and the near end of the data path. Therefore, the transmitted data at the far end can be amplified again as long as the differential level is sufficient.

Abstract: Various patterns, such as those derived from halftoning techniques, are applied to the design of print masks for inkjet printers to improve print quality. Print masks are used to control the firing sequence of the nozzles in a print head in multiple pass printing mode and thereby determine the nozzles that are to print in each particular media location. Such techniques as halftoning techniques have been used to print gray scale images with bi-level printing to produce bi-level patterns that can be perceived as gray density by human eyes from a viewing distance. State-of-the-art print masks typically provide checkerboard patterns that are not sufficient to handle severe print artifacts. A novel triangular clustering print mask that may be derived from halftoning techniques is applied to produce an imperceptible printed pattern that covers up the banding artifacts caused by defective print head nozzles.

Abstract: A piecewise polynomial interpolation scheme treats images as three-dimensional data in which the X and Y coordinates are the input image dimensions, and the Z coordinate is the intensity of the image. The three-dimensional data set is fitted by a surface, and a resampling process on the fitting surface provides interpolative data. A thresholding process applied on these interpolative data produces a final image output. Based on the interpolating scheme, each output pixel is a weighted average of its neighboring pixels, with weights determined by the type of the interpolant, its degree, and the desired scaling factor. The weights may be pre-calculated for fixed scaling factors, such that the convolution is accomplished by table lookup. Additionally, the resampling process may include a phase shifting to realign said sampling location with respect to an input image.