Television display with doubled horizontal lines

Details Television display with doubled horizontal lines Television display with doubled horizontal lines

1982-03-18

1983-11-15

Britton, Howard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358134, 358140, 358152, 358166, H04N 568

Patent

active

044159315

ABSTRACT:
A television display reduces the visibility of the raster-scan structure. Each incoming horizontal line of video information is stored in a memory and read twice at a double clock frequency. Each incoming horizontal line is therefore replicated. Each line and its delayed replica are applied to a display device scanned at double the normal rate, thereby displaying each horizontal line of information as a line pair oriented one above the other. This doubles the number of scanning lines in the display in a simple manner and reduces the visibility of the raster scan structure.

REFERENCES:
patent: 4364090 (1982-12-01), Wendland

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