ALIGNMENT PROCESS FOR AUTOMATICALLY ADJUSTING THE ELECTRONIC BEAM IN TELEVISION TAKING TUBES, IN WHICH ALL THE PRESENT LIGHT RANGE VALUES ARE PRESENT

摘要

P a. Alignment method for automatically adjusting the electron beam in television picture tubes in which all the peak light range values which arise are automatically neutralized. BR/ b. Process characterized in that, for several periods corresponding to successive half-images, the collecting electrode 2 is operated so that the charge produced by the illumination of the collecting electrode accumulates; that the scanning of the collecting electrode 2 is then carried out; that in a second phase; after further accumulation on the collecting electrode 2, the collecting electrode 2 is again scanned; that the video signal which appears during the first half-image is measured there; the limit of the beam current reserve is increased until, during another alignment process, the video signal exceeds this threshold value by a higher value. BR/ (CF DRAWING IN BOPI) BR/ BR/ /P