The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 1976
Filed:
Feb. 27, 1974
Richard L Wilocki, Elk Grove, IL (US);
Warwick Electronics Inc., Chicago, IL (US);
Abstract
In a television receiver, a saturable transformer has three windings, one being in series with a horizontal deflection coil to introduce a parabolic reactance variation to correct for side pincushion distortion. An adjustable correction circuit includes a transistor integrator for producing in another winding of the saturable transformer a vertical parabolic current. The last winding of the saturable transformer is coupled through a pair of switching diodes to a pair of variable inductors. The diodes conduct alternately at the beginning and end of the vertical scanning period. The variable inductors may be mounted coaxially with a common movable core to allow inverse side correction, or may be mounted separately with separate movable cores to allow independent side correction.