Communications: electrical – Systems – Portable self-contained
Patent
1976-09-13
1978-09-05
Curtis, Marshall M.
Communications: electrical
Systems
Portable self-contained
358 87, 358237, G06F 314
Patent
active
041124235
ABSTRACT:
A data display terminal that is particularly adapted for displaying data output from a batch computer. The invention utilizes a pair of conventional cathode ray tubes which are positioned adjacent one another so that the available display area is double that of a conventional display terminal. The terminal is adapted to display a line of data in sequence across both display screens. In this manner, with conventional 80 characters per line video monitors, a full 160 characters per line capability is realized.
Further disclosed herein is circuitry for automatically positioning the display of data in relation to the "fold" that exists between the two screens. The terminal is adapted to shift the displayed data either left or right as directed by the viewer so that the fold appears in a convenient location. The balance of the available viewing area is automatically filled with blanks.
In addition to the conventional scrolling feature found on most data display terminals, a heading protect circuit is disclosed which prevents a designated heading from being scrolled off the top of the display screen as additional information is scrolled onto the bottom of the screen. Furthermore, the terminal is adapted to remember information scrolled off of the screen so that the information can be retrieved and displayed again at a later time. Finally, a separate message page is provided so that interactive batch communications such as error messages, will not overwrite the text being prepared by the terminal operator.
REFERENCES:
patent: 3166636 (1965-01-01), Rutland et al.
patent: 3611348 (1971-10-01), Rogers
patent: 3614766 (1971-10-01), Kievit
patent: 3643252 (1972-02-01), Roberts, Jr.
patent: 3792462 (1974-02-01), Casey et al.
patent: 3833764 (1974-09-01), Taylor
patent: 3889253 (1975-06-01), Ross
patent: 4001807 (1977-01-01), Dallimonti
Curtis Marshall M.
Kelsey-Hayes Co.
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