CRT Display device
US4479119A · kind A · utility
11Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1981 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Jul 15, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A CRT display device which includes a display control unit is provided. In accordance with the present invention, the frequency of a pulse train supplied to a shift register for producing a video signal from a dot pattern signal is adjusted or controlled in response to a mode selection signal. Therefore, a part of the characters may be displayed as compressed thereby increasing the density of displayed information without impairing clear observability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.