Method and apparatus for improving the resolution of digital...

Details Method and apparatus for improving the resolution of digital... Method and apparatus for improving the resolution of digital...

H - Electricity

04

N

350/33

H04N 7/30 (2006.01)

Patent

CA 1330121

Abstract A method and apparatus for the improvement of the resolution of digital signals. In digital TV signals which are transformed into a selected frequency range, irregularities in the pattern of the reproduced video signals occur because of rounding off errors, when the number of places is reduced during calculation of the coefficients. This is remedied by increasing the coefficients of the transformed signal values following at least one first coefficient, for example a uniform component, and reducing them again before inverse transformation. This invention can be employed in digital systems using block processing in which, because of a limited number of bits, a rounding off of the transmitted spectral coefficients is performed in the calculation.

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