Projection television and convergence control method thereof

Details Projection television and convergence control method thereof Projection television and convergence control method thereof

2005-12-06

2005-12-06

Natnael, Paulos M. (Department: 2614)

Television

Video display

Projection device

Reexamination Certificate

active

06972807

ABSTRACT:
A projection television and a convergence control method thereof are provided. The projection television, which magnifies images displayed on cathode ray tubes (CRTs) for the colors red, green, and blue using lenses and projects the magnified images onto a screen, includes a convergence control apparatus capable of adjusting the convergence while an input image signal is displayed, the convergence control apparatus including: an image signal decoder which processes the input image signal to generate a data signal, horizontal and vertical synchronous signals, and a start signal indicating the start of either the horizontal or vertical synchronous signal; a convergence control unit which normally projects an image signal output from the image signal decoder onto the screen and performs convergence control using a predetermined region of the screen displaced from a visible region of the screen according to a convergence control command; and a main microcomputer which inputs the convergence control command to the convergence control unit when the start signal is input from the image signal decoder, stops the convergence control when a completion signal is input from the convergence control unit, and performs a control operation to continuously display the image signal during the convergence control.

REFERENCES:
patent: 3943279 (1976-03-01), Austefjord
patent: 4868668 (1989-09-01), Tavernetti
patent: 4935674 (1990-06-01), Rodriguez-Cavazos
patent: 5473224 (1995-12-01), Tsujihara et al.
patent: 5835029 (1998-11-01), Fujiwara et al.
patent: 6268887 (2001-07-01), Watanabe et al.
patent: 6333768 (2001-12-01), Kawashima et al.
patent: 6600276 (2003-07-01), Lee
patent: 6606130 (2003-08-01), George
patent: 39 36 789 (1991-05-01), None
patent: 0 703 714 (1996-03-01), None
patent: WO 00/64188 (2000-10-01), None

Affiliated with

Also associated with

Rating

Projection television and convergence control method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection television and convergence control method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection television and convergence control method thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3485085