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Abstract

A system for converting a digital input signal having a vertical and horizontal dimension into a digital output signal having a different horizontal and vertical dimension than that of the digital input signal. The digital input signal is fed into a first memory which stores the input signal. A horizontal resampling filter is used for converting the horizontal dimension of the digital input signal to the horizontal dimension of the desired output signal. The output from the horizontal resampling filter is transposed so that the vertical dimension of the output signal is oriented in a horizontal orientation. The transposed signal is then stored in a second memory. The transposed signal with the resampled horizontal dimension from the second memory is fed into a vertical resampling filter which converts the vertical dimension information of the transposed signal to the desired format of the output signal. This vertically resampled signal is then transposed so that the horizontal and vertical dimensions are oriented like that of the digital input signal. The re-tranposed signal is then stored in a third memory as the digital output signal.

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First Claim