Device for generating a video image sharpness improvement...

Details Device for generating a video image sharpness improvement... Device for generating a video image sharpness improvement...

2007-10-23

2007-10-23

Yenke, Brian P. (Department: 2622)

Television

Cathode-ray tube display automatic black level bias control

C348S607000, C348S673000, C345S590000, C345S620000

Reexamination Certificate

active

10926786

ABSTRACT:
A device for producing a video image sharpness improvement signal (DOC21-DOC22), with black level clipping of an associated video signal, comprises a differential transconductance stage processing the video signal and whose bias currents (Imax) are directly proportional to the active component (ΔV) of the video signal so as to bring about a black level sharpness improvement signal clipping.

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Tietze, S., “Differenzverstärker mit Stromgegenkopplung,” Halbleiter-Schaltungstechnik, pp. 64-65, 1980. XP002273413.

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