Binary character generator for interlaced CRT display

Details Binary character generator for interlaced CRT display Binary character generator for interlaced CRT display

1983-11-18

1987-03-10

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340723, 340733, 340744, G09G 106

Patent

active

046493786

ABSTRACT:
An apparatus for flicker reduction and increased writing speed into image memory in a CRT display having an interlaced scan with masking of low priority symbols. The apparatus expands or duplicates adjacent picture elements to provide redundant illumination for alternate fields, thereby providing at least two adjacent illuminated picture elements proximate to a masking image to reduce flickering during the writing of alternate fields. Writing into a single memory location commands illumination of a plurality of adjacent pixels, thereby reducing image memory writing time. The apparatus utilizes an image memory wherein video bit signals are written into only storage locations whose binary x coordinate has a predetermined first digit, and whose binary y coordinate has a predetermined first digit. Signals in storage locations whose addresses correspond to picture elements P.sub.I,J, P.sub.I-1,J, P.sub.I-1, .sub.J+1, and P.sub.I, J+1 are read from the image memory, and a Boolean OR sum signal is generated therefrom which is converted to an analog signal. The picture element P.sub.I,J is illuminated in response to an analog signal representing the Boolean OR sum signal 1.

REFERENCES:
patent: 4119954 (1978-10-01), Seitz et al.
patent: 4354186 (1982-10-01), Groothuis

Affiliated with

Also associated with

Rating

Binary character generator for interlaced CRT display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Binary character generator for interlaced CRT display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Binary character generator for interlaced CRT display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1023840