Surveillance apparatus

Details Surveillance apparatus Surveillance apparatus

1983-10-31

1998-12-01

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Display

342183, 342179, 250342, G01S 1300

Patent

active

058445200

ABSTRACT:
In an infra-red surveillance system, a digital memory (1) has a storage location for each of a number of zones, defined by azimuth and elevation co-ordinates, the zones together covering 360.degree. in azimuth and 20.degree., for example, in elevation. In each location there is stored a data word built up from the responses on a zone in successive scans. Each word can be read into a decoder (5) which selects an appropriate video display level in the form of a two-bit word which is then stored in a buffer store (6). A buffer store data controls the display on a cathode ray tube (2). A manually controlled cursor circuit (8) generates a cursor address which results in a cursor display at the corresponding position on the cathode ray tube. The display is in the form of four strips, one above the other, each representing a quadrant of azimuth.

REFERENCES:
patent: 4205313 (1980-05-01), Pease
patent: 4546355 (1985-10-01), Boles

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