Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1975-04-30
1978-01-17
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5EM, G01S 706, G01S 722
Patent
active
040694810
ABSTRACT:
A pulse radar apparatus has video quantizing means for digitally encoding the received video signals at a first clock rate. The encoded video is fed into storage means, read out at a second clock rate, converted to analogue form and applied to a cathode ray tube to give a display, e.g. a P.P.I. display. The cathode ray tube has a constant time base speed and different range scales for the display are obtained by switching the speeds of writing into and/or reading out of the store. Multiple stores permit asynchronous reading and writing. Multi-level amplitude coding of the video amplitude is employed.
REFERENCES:
patent: 2490268 (1949-12-01), Herbst
patent: 3543269 (1970-11-01), Dudley
patent: 3569966 (1971-03-01), Dunn et al.
patent: 3890616 (1975-06-01), Kojzma et al.
patent: 3893110 (1975-07-01), Drake
patent: 3899769 (1975-08-01), Honore
Cramp Harry Donald
Easy Maurice Henry
Hartley Peter Lambert
Williams Philip David Lane
Connors Edward F.
Decca Ltd.
Hubler Malcolm F.
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