Abstract: A method and system for scaling an image in accordance with the present invention is disclosed. The method utilizes a plurality of interpolators operating in parallel. Each interpolator operates with a different spatial offset with respect to the other. The final output is the average the output of each interpolator. Normally the initial value of the horizontal and vertical DDA's is zero. Offset is introduced by introducing an initial value in the DDA. Offset has the physical effect of manipulating the weights required for the averaging process in interpolation. Horizontal offset is the initial value in the Horizontal DDA while the vertical offset is the initial value in the Vertical DDA. The present invention relates to implementation in a semiconductor integrated circuit but the concepts can be used in software based image resizing (scaling) algorithms too.

Abstract: Pixel clock frequency and optimum sampling phase adjustment is an important requirement in Flat panel display monitors (FPDM) with an analog video interface. This invention proposes a new and more advanced method for frequency an optimum sampling phase determination. It is based on analyzing the content of the image to arrive at an optimum value of pahse and frequency by directly optimizing image quality. The method differs from exsisting methods on two counts. First, no assumptions are needed about the precise value of expected frequency. Second, instead of following a two step approach of first determining frequency and then phase, this invnetion makes possible a single pass phase-frequency optimization.

Abstract: Pixel clock frequency and optimum sampling phase adjustment is an important requirement in Flat panel display monitors (FPDM) with an analog video interface. This invention proposes a new and more advanced method for frequency and optimum sampling phase determination. It is based on analyzing the content of the image to arrive at an optimum value of phase and frequency by directly optimizing image quality. The method differs from existing methods on two counts. First, no assumptions are needed about the precise value of expected frequency. Second, instead of following a two step approach of first determining frequency and then phase, this invention makes possible a single pass phase-frequency optimization.

Abstract: Pixel clock frequency and optimum sampling phase adjustment is an important requirement in Flat panel display monitors (FPDM) with an analog video interface. This invention proposes a new and more advanced method for frequency and optimum sampling phase determination. It is based on analyzing the content of the image to arrive at an optimum value of phase and frequency by directly optimizing image quality. The method differs from existing methods on two counts. First, no assumptions are needed about the precise value of expected frequency. Second, instead of following a two step approach of first determining frequency and then phase, this invention makes possible a single pass phase-frequency optimization.