Dual-screen data display terminal for data processing units
US4112423A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1976 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Sep 13, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/153
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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 ter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.