Method of generating a cursor

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

340709, G09G 322

Patent

active

050972561

ABSTRACT:
A system for using the page buffer memory which stores the pixel map to generate the cursor in a CRT display. An unused portion of the memory is used to store a duplicate copy of the band in which the cursor is currently located, and the cursor is written into its appropriate location in this duplicate band, thus destroying the underlying image in the duplicate, but not in the original. The display is then generated by cycling through the page buffer except that the duplicate band containing the cursor, instead of the original band containing the underlying image, is displayed. After each display is generated, during the time when the scan returns from the bottom to the top of the display, if the cursor has moved since the previous display, the new band containing the cursor is created in the unused portion, and the display process is repeated.

REFERENCES:
patent: 4646078 (1987-02-01), Knierim et al.
patent: 4668947 (1987-05-01), Clarke
patent: 4706074 (1987-11-01), Muhich et al.
patent: 4918427 (1990-04-01), Clarke
Mitsubishi Electric Specification of the M5M4C264P-12 Dual-Port Dynamic RAM, Aug. 1986.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of generating a cursor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of generating a cursor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of generating a cursor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1479259

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.