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:
May. 10, 1988
Filed:
Jun. 03, 1986
Gerard Duvic, Rennes, FR;
Michel Veillard, Rennes, FR;
Laurent Paris, Grenoble, FR;
Patrice Senn, Grenoble, FR;
Etat Francais, Les Moulineaux, FR;
Telediffusion de France, Montrouge, FR;
Abstract
Circuit for producing analog primary signals of a television signal from its digital luminance and chrominance components comprising in series an interpolating digital filter, a digital dematrixer and three digital - analog converters. The interpolating digital filter carried out an oversampling of the luminance signal Y in a ratio of 2 and an oversampling of each chrominance signal CR, CB in a sampling ratio such that the sampling frequency of the luminance and chrominance digital signals has the same sampling frequency. The digital dematrixer produces the primary digital color signals from the oversampled luminance and chrominance components.