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:
Jul. 29, 1986
Filed:
Aug. 30, 1985
Applicant:
Inventors:
Franciscus W Vreeswijk, Eindhoven, NL;
Sing L Tan, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358140 ; 358 11 ;
Abstract
By providing, in a field-frequency doubling circuit comprising a converter circuit (3) of an A, A, B, B, type, an interpolation circuit (31) which combines, in an appropriate manner, the information of two subjacent lines of a first field of a picture of the television signal to be converted and a second field of a picture of the television signal to be converted, line flicker can be prevented from occurring without it being necessary to provide a movement detector and a change-over switch for an A, B, A, B-type conversion.