Quadrature Distortion Correction for TV Vestigial Sideband Transmission
The TV vestigial sideband transmission produces nonlinear effects, quadrature errors, inherent in the system. These errors give rise to increased overshoots, loss in resolution and a change of the pulse ratio with square-wave signals. With the transmission of color signals, two types of distortion are known so far: incorrect reproduction of the brightness of colored areas, and phase modulation of the vision carrier. A possibility of correcting the quadrature errors is discussed. The equipment described is arranged in the video part of the transmitter to precorrect the distortions. Home reception is thus improved.
- Print ISSN
- 0361-4573
- Published
- 1966-01
- Content type
- Original Research
- DOI
- 10.5594/J15366
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