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Investigation of television standards converters

: Reuter, T.

Archiv für Elektronik und Übertragungstechnik : AEÜ 40 (1986), Nr.6, S.389-396
ISSN: 0001-1096
Fraunhofer HHI ()
convertors; filtering and prediction theory; frequency response; frequency-domain analysis; interpolation; picture processing; television standards; video signals; tv; television standards converters; line rates; field repetition rates; two-dimensional sampling rate conversion; interpolation filters; frequency domain

The conversion between two television standards with different line rates and different field repetition rates is an example of a two-dimensional sampling rate conversion. The ideal conversion is explained with the aid of a block diagram. The disturbances caused by non-ideal interpolation filters are analyzed in the frequency domain and the possibilities of reducing the degradations are considered. For well known standards converters the frequency response is computed and compared with the ideal response.