Video signal processing apparatus for prompter

Details Video signal processing apparatus for prompter Video signal processing apparatus for prompter

1997-03-04

1998-02-03

Britton, Howard W.

Television

Studio equipment

345124, H04N 5222

Patent

active

057150192

ABSTRACT:
A video signal processing apparatus for a prompter of the present invention is capable of projecting a picture easy to see without a flicker of an image in the vertical direction during a vertical scrolling operation. An image data of a manuscript is displayed by interlace scanning, and the displayed manuscript is vertically scrolled at various speeds. The control circuit of the apparatus updates the uppermost horizontal line read from the image memory by one every time even field is read if the scrolling speed is 8 sec./screen. The control circuit updates the uppermost horizontal line read from the image memory when one of three consecutive even fields except a predetermined one is read if the scrolling speed is 12 sec./screen. In this manner, the uppermost horizontal line is sequentially replaced in order.

REFERENCES:
patent: 1959038 (1934-05-01), Ridgway
patent: 2291931 (1942-08-01), Troeger
patent: 2598947 (1952-06-01), Thielen
patent: 2711667 (1955-06-01), Simjian
patent: 2796801 (1957-06-01), Simjian
patent: 3824339 (1974-07-01), Eisenberg
patent: 4602251 (1986-07-01), Sawada

Affiliated with

Also associated with

Rating

Video signal processing apparatus for prompter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video signal processing apparatus for prompter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal processing apparatus for prompter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-667210