U.S. Philips Corporation

Hendrik Van Der Wal

Petrus W Welles

Pieter J Zijlstra

Dionysius A Boerrigter

In a television picture display device which can display a compressed (by 13) sub-picture of a second video signal source (29) in a main picture of a first video signal source (1), a correct mutual location of the picture information in the sub-picture with respect to the main picture is always obtained by means of a first (55) and a second (119) even-odd field identification circuit for the sub-picture and for the main picture, respectively, an interlacing circuit (71) and an interlacing-correction circuit (125), so that troublesome phenomena no longer occur in the sub-picture upon field transitions.

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Eindhoven, Netherlands

Hendrik Van Der Wal