Method and apparatus for displaying radar video registered with computer generated data on a television monitor
US4162494A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1978 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Apr 28, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for use in air-traffic control are described for maintaining substantial registration alignment between radar video signals and associated computer generated data on a television monitor. It is a requirement of the monitor display that the radar video, such as raw radar, map video, etc., be displayed with a long time constant to show the history of the radar trails. Simultaneously, the associated computer generated data, such as vectors, alpha-numerics, etc., must be displayed properly registered with the radar video on the same monitor with a short time constant. This is necessary to avoid smearing, since the latter data moves on the monitor screen as the radar pattern changes. In accordance with the present invention, the radar and computer data are combined into a single cathode ray tube, photographed by a pair of vidicons having different time lag characteristics, and the images of the latter combined on a television monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.