Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-02-01
1985-09-03
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328127, 328 27, 328142, 328 34, 333172, 333 19, 307268, 307490, 307106, 307108, H03K 501, H03K 5145
Patent
active
045394881
ABSTRACT:
An electronic image framing circuit is described for eliminating the visible effects of pincushion distortion at the edges of a television image. Toward this end, portions of video lines which extend beyond a selected straight line image boundary are blanked by a pulse processor. The pulse processor responds to conventional horizontal rate and vertical rate pulses for developing blanking pulses whose widths are varied at a vertical rate. The modified blanking pulses are applied to a conventional blanking circuit for blanking the portions of video lines which extend beyond the desired image area. A parabola generator is also described for use in developing the modified blanking pulses.
REFERENCES:
patent: 2890420 (1959-06-01), Bradburd
patent: 3872449 (1975-03-01), Scheidweiler
"Introduction to Filter Theory", by David E. Johnson, 1976, p. 114 and Chapter 9.
Miller Stanley D.
Roseen Richard
Zenith Electronics Corporation
LandOfFree
Pulse wave to parabola wave converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse wave to parabola wave converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse wave to parabola wave converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-615514