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. 31, 1993
Filed:
May. 06, 1991
Applicant:
Inventor:
Susumu Maetani, Fukuoka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358139 ; 358148 ; 358158 ;
Abstract
A display apparatus includes a cathode ray tube. A deflection yoke is attached to the cathode ray tube. A deflection device serves to generate a sawtooth current in response to an input sync signal, and to feed the sawtooth current to the deflection yoke. A phase difference detector serves to detect a difference between a phase of the sawtooth current generated by the deflection means and a phase of a color pattern signal which represents a start and an end of luminance information in an input luminance signal. A correcting device serves to correct an image-indicated position in response to the phase difference detected by the phase difference detector.