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:
Apr. 26, 1994
Filed:
Nov. 27, 1991
Applicant:
Inventors:
Andre Maillot, Dijon, FR;
Marc Milili, Puteaux, FR;
Assignee:
Videocolor, Paris la Defense, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01F / ;
U.S. Cl.
CPC ...
313413 ; 313431 ; 313426 ; 313440 ; 335210 ; 335213 ; 335284 ; 335296 ;
Abstract
In a deflection yoke mounted on a cathode ray tube, a pair of silicon steel field harmonic enhancers are placed over rear portions of a horizontal deflection coil of a saddle coil type near an electron beam entrance region of the coils such that portions of the saddle coils are interposed between the field harmonic enhancers and a neck portion of the cathode ray tube. The field harmonic enhancers reduce horizontal coma error by making the horizontal deflection field in the rear portion of the saddle coils more pincushion shaped.