Image display apparatus and method having virtual cursor
US4566000A · kind A · utility
18Cited by
25References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1983 |
| Grant date | Jan 21, 1986 |
| Priority date | — |
| Expiry date | Feb 14, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Image display equipment has a memory element for storing a selected combinatorial function of a cursor pattern and image field existing at an addressed cursor position, and has a controllable selector for displaying, at the cursor field, either the image field or the combined cursor field and image pattern. A single display memory can store the image field, the cursor pattern, and the selected combination of cursor pattern and image field. Selection logic addresses the stored combination pattern in lieu of the image field to provide the desired cursor display at the addressed cursor position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.