Visual display with column separators
US4146879A · kind A · utility
7Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Apr 12, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G1/143
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The specification shows and describes a visual display of the CRT variety wherein column separator lines may be displayed intermediate character matrix positions as an operator aid. The visual column separators further do not require that any character position be used or encroached upon and where limited spacing occurs between character forming dot matrices, logic delays may be utilized in the video modify circuitry to displace the separator line and thereby visually distinguish such separator line from any adjoining character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.