Title:
DEFLECTION CIRCUITS COUPLED VIA A FILTER
Document Type and Number:
WIPO Patent Application WO2000041519
Kind Code:
B1
Abstract:
A secondary winding (LSEC) of a horizontal flyback transformer (IHVT) of a horizontal deflection circuit (20) develops a horizontal retrace pulse voltage (12). A secondary winding (43) of a second transformer (41) is coupled in series with a vertical deflection coil (LV) of a vertical deflection circuit (60). An R-C filter (40) is coupled between the secondary winding (LSEC) of a flyback transformer (IHVT) and a primary winding (42) of the second transformer (41). Horizontal parallelogram errors are corrected by a horizontal rate current (Icorr) injected in a current path of the vertical deflection coil (LV). The R-C filter (40) prevents the vertical deflection current from being parasitically coupled to the horizontal deflection circuit (20).
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Inventors:
TRUSKALO WALTER (US)
SHOUSE JOHN FELIX JR (US)
SHOUSE JOHN FELIX JR (US)
Application Number:
PCT/US2000/000307
Publication Date:
June 14, 2001
Filing Date:
January 06, 2000
Export Citation:
Assignee:
THOMSON LICENSING SA (FR)
TRUSKALO WALTER (US)
SHOUSE JOHN FELIX JR (US)
TRUSKALO WALTER (US)
SHOUSE JOHN FELIX JR (US)
International Classes:
H04N3/23; G09G1/04; H03K4/90; (IPC1-7): H03K4/90; H04N3/22; H04N3/237
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