A combined de-interlacing and frame doubling system (114, 114' and 114'')
advantageously serves to de-interlace successive lines of Present Field
Video data at twice the field rate to yield an output bit stream suitable
for display on display device that utilizes progressive scanning. The
de-interlacing and frame doubling system in accordance with present
principles includes a frame memory mechanism (116, 116' and 116'') for
storing at least one frame of interlaced video having a prescribed field
rate. At least one de-interlacing circuit (1140.sub.1, 1140'.sub.1,
1140'') pulls at least two fields of video data from the memory mechanism
at a rate of at least twice the field rate for performing a full
de-interlacing function in half of a field period to generate the a
progressive, frame doubled signal for receipt at the display device.