TV Transmission system for long tow cables

Details TV Transmission system for long tow cables TV Transmission system for long tow cables

1977-03-04

1981-05-19

Bookbinder, Marc E.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 99, 358108, 358210, 455 3, H04N 710, H04N 718, H04N 530

Patent

active

042688582

ABSTRACT:
An underwater survey system where the existence of a large number of multiplex signals in conjunction with a relatively poor frequency response over a long tow cable, results in a situation where the transmission of a normal 30 frames per second TV picture is impossible. The invention describes a method of transmitting a reduced bandwidth TV system where the signals are modulated on a carrier and the lower sideband used. The large signal loss at the upper frequency is compensated by equalizers, which can result in objectionable interference, when the vehicle is close to the receiving end. A remotely controlled carrier is used to minimize this interference.

REFERENCES:
patent: 2076361 (1937-04-01), Beverage
patent: 2852600 (1958-09-01), Jenkins, Jr.
patent: 3072904 (1963-01-01), Yaffee
patent: 3099913 (1963-08-01), Melton
patent: 3275745 (1966-09-01), Var
Leo G. Sands, "Remote Control of Mobile Base Station" Jan.-1954, Radio-Elect.

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