Device for the measurement, in operation, of non-linearity produ

Details Device for the measurement, in operation, of non-linearity produ Device for the measurement, in operation, of non-linearity produ

1980-12-17

1983-11-08

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 10, 455 9, 455115, H04N 762, H04N 962

Patent

active

044145683

ABSTRACT:
The present invention relates to a device for measuring in operation the non-linearity of equipment for the transmission of composite television signals. It comprises a processing circuit which samples an intermodulation product located outside the useful spectrum transmitted, but within the band of the equipment generating it, whose measurement is validated by a control circuit for predetermined instantaneous or average values of the vision carrier.

REFERENCES:
patent: 2646461 (1981-07-01), Grace
patent: 3730984 (1973-05-01), Smith
patent: 3735039 (1973-05-01), Trzyma
patent: 3867010 (1979-08-01), Rzeszewski
patent: 4215367 (1980-07-01), Schaffer et al.
patent: 4276564 (1981-06-01), Watson et al.
J. Irmer; Combined Amplifier Technique for Vision and Sound in Medium Power Television Transmitter, Electrical Communication-vol. 47-No. 3-1972.
Binns, "Measuring Techniques for UHF Television Transmitters Employing Klystrons", The Radio and Electronic Engineer, vol. 41, No. 7, Jul. 1977, pp. 309-314.
Dambacher et al., "Fernsehmesstechnik mit Prufzeilensignalen", Funkschau, vol. 46, No. 8, Apr. 1974, pp. 784-790.

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