Apparatus for reducing beam current measurement errors

Details Apparatus for reducing beam current measurement errors Apparatus for reducing beam current measurement errors

1986-02-27

1987-07-14

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 74, 307268, 330257, 330265, H04N 568

Patent

active

046806407

ABSTRACT:
Errors occurring in the beam current measurement in a video output stage can be reduced by increasing the recharging rate of the capacitive load of a video amplifier, constituted by the picture display tube of a picture display arrangement, with the aid of a bias current or a quiescent current which is subtracted again from the current applied to an input of the beam current measuring circuit which is controlled by the video amplifier.

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patent: 4536800 (1985-08-01), Parker
Achterberg et al, Video-Kombination TDA 3505 and TDA 3506 mit Sperrpunktregelung, 1983, pp. 1-31.

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