Vector scope

Details Vector scope Vector scope

1981-09-08

1984-12-11

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

324 88, H04N 946, H04N 962

Patent

active

044881681

ABSTRACT:
In a method and a vector scope for measuring distortion of a subcarrier signal causing color aberration of a color television signal, a carrier chrominance signal resulting from a color bar signal transmitted in a transmission system and a reference carrier chrominance signal including a signal determining levels of the amplitude and phase distortions of said carrier chrominance signal are demodulated through the same demodulating device and color difference signals thus obtained are displayed in vector, whereby only the distortion of the subcarrier by the transmission system is measured independently of the influence of the distortion of the vector scope itself.

REFERENCES:
patent: 3614304 (1971-10-01), Schonfelder
patent: 3820156 (1974-06-01), Schulz
patent: 3850412 (1974-11-01), Olson
Measurement Techniques in TV Studios and Outside Broadcasts, by I. H. Teear, et al., The Radio and Electronic Engineer, vol. 41, No. 3, pp. 113-125.
Tektronix Inc. Catalog, pp. 77-83, Models 520A, 521A and 522A.
Philips Electronic Instruments, Inc. Catalog, Model PM 5567.
Electronic Visuals Limited Catalog, Model EV 4020.
Videotek, Inc. Catalog, Model VSM-5.

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