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:
Aug. 23, 1988
Filed:
Jan. 06, 1987
Applicant:
Inventor:
Kirk Oliver, Forest Park, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315371 ;
Abstract
Top and bottom pincushion correction signals with separately controllable amplitude, phase and tilt are provided. A switching signal developed from the vertical ramp operates a plurality of switches for selectively applying the top and bottom correction signals to the carrier input of a multiplier. The modulator input of the multiplier is supplied with the vertical ramp and the output of the multiplier consists of a conventional 'bow tie' correction signal with each half of the bow tie being separately controllable.