X-ray examining device comprising a television chain which...

Details X-ray examining device comprising a television chain which... X-ray examining device comprising a television chain which...

H - Electricity

05

G

358/11.2

H05G 1/00 (2006.01) H04N 1/21 (2006.01) H04N 5/32 (2006.01)

Patent

CA 1089119

ABSTRACT : In an X-ray examining device comprising a television chain and a (disc) image recording memory, the deflection signals Or the television pick-up tube and a drive of the recording memory are synchronized via the power supply mains, When the high voltage gene- rator is switched on, inductive loading of the power supply mains occurs. Consequently, the resultant phase shifts cause errors in the synchronization. This gives rise to the appea- rance of artefacts in a monitor image formed from the recording via the memory. Uncoupling of the synchronization from the power supply mains between an instant some time before and an instant some time after the switching on respectively off of the high voltage generator prevents the undesired recording errors. - i1 -

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