Television Vertical Aperture Compensation

The known ways of compensating in the vertical direction for a scanning aperture are reviewed. A new method is presented. This consists of wobbling the scanning aperture in and out of focus at a rapid rate, yielding high- and low-resolution signals. The low-resolution signal is subtracted from the high-resolution signal, yielding an aperture-compensated, or edge-enhanced, picture independent of the scanning direction. A similar method using vertical deflection wobble rather than focus wobble results in vertical aperture compensation alone. Pictures are shown to illustrate the subjective improvements obtainable using vertical aperture compensation.

Print ISSN

0898-0438

Published

1955-12

Content type

Original Research

DOI

10.5594/J13989