Communications: electrical – Systems – Portable self-contained
Patent
1974-07-24
1976-05-04
Curtis, Marshall M.
Communications: electrical
Systems
Portable self-contained
178 15, G06F 314
Patent
active
039551890
ABSTRACT:
Disclosed is data storage and transfer apparatus forming a sub-system of a data display terminal of the type in which a page of characters arranged in rows and columns are displayed on a television monitor by means of converting a plurality of character-representing data words into a pattern of pulses that control the intensity of the television beam during the course of its raster scan. An advantageous composition of text on the display screen is obtained in that the number of characters per row is not arbitrarily limited to being a power of two. There is provided a multi-location random access memory (RAM) having sufficient storage capacity to store all the data words for a full page. Circuitry is provided for addressing the RAM by address pointers that are represented in matrix notation. The circuitry includes address converter circuitry for converting the address pointers to absolute addresses for selecting locations of the RAM in connection with the transfer of data words into and out of the RAM.
REFERENCES:
patent: 3426344 (1969-02-01), Clark
patent: 3701988 (1972-10-01), Allaart
Curtis Marshall M.
Lear Siegler
LandOfFree
Data display terminal having data storage and transfer 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 Data display terminal having data storage and transfer apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data display terminal having data storage and transfer apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-683179