Self-inspecting convergence measuring apparatus

Details Self-inspecting convergence measuring apparatus Self-inspecting convergence measuring apparatus

1990-10-01

1991-12-31

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358139, 324404, 31536811, H04N 1702, H04N 1700

Patent

active

050776002

ABSTRACT:
A convergence measurement apparatus for a color CRT comprising a light sensor which is placed on the face of a CRT to be tested, a CPU, and a pattern generator which causes a plurality of luminescent lines of a primary color to be displayed on one area of the CRT screen and a plane area comprised of a composite of the two other primary colors to be displayed on another area of the screen. The plurality of lines are shifted at a given rate along the designated area of the screen, the color of the displayed lines successively changing to show each primary color. The light sensor receives light intensity information from the generated pattern and the CPU calculates a mis-convergence value based on the light intensity data. The apparatus further includes a self-inspection feature by which the processing is executed for successive measurement of the same primary color. If the values for each measurement are identical the system is assumed to be operating normally and if there is variation, abnormal operation can be diagnosed.

REFERENCES:
patent: 4441120 (1984-04-01), Gerritsen
patent: 4593309 (1986-06-01), Uno et al.
patent: 4686429 (1987-08-01), Fendley
patent: 4897721 (1990-01-01), Young et al.
patent: 4925420 (1990-05-01), Fourche et al.
patent: 4989072 (1991-01-01), Sato et al.

Affiliated with

Also associated with

Rating

Self-inspecting convergence measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-inspecting convergence measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-inspecting convergence measuring apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1513561