Data display systems
US3967268A · kind A · utility
19Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1975 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Jun 30, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a data display system, data codes are converted by character generators to dot matrix video waveforms for the display of alphanumeric characters and graphical characters (such as segments of graphs or maps), control codes being used to switch between alphanumeric and graphical display modes. In the latter mode, however, certain alphanumeric characters, such as the upper-case alphabet, can still be displayed under the control of a particular bit of the data codes. For one bit value the codes are interpreted as graphical characters. For the other bit value the codes are interpreted as alphanumeric characters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.