Microprocessor controlled CRT display system

Details Microprocessor controlled CRT display system Microprocessor controlled CRT display system

1976-12-28

1978-08-01

Curtis, Marshall M.

Communications: electrical

Systems

Portable self-contained

340154, G06F 314

Patent

active

041046242

ABSTRACT:
A display system is disclosed wherein a refresh memory is divided into a plurality of blocks of bytes so that a micro-processor can access the blocks byte by byte while display data of the plurality of blocks are assembled by word so that the display data are accessed word by word. The access by the micro-processor and the access for display are time-shared at a timing of one half of one character display to avoid wait time for the accessing.

REFERENCES:
patent: 3656148 (1972-04-01), Belcher et al.
patent: 3676850 (1972-07-01), Goldman et al.
patent: 3742482 (1973-06-01), Albrecht et al.
Cost Effective, Reliable CRT Terminal...; Doub; Hewlett-Packard Journal; vol. 26, #10; pp. 2-5.
A Functionally Modular Logic System for CRT Terminal; Lane; Hewlett-Packard Journal; vol. 26, #10, pp. 6-10.
High Resolution Raster Scan Display; Roy; Hewlett-Packard Journal; vol. 26, #10; pp. 11-15.

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