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:
Jun. 28, 1988
Filed:
Sep. 17, 1986
Akihide Okuda, Yokohama, JP;
Isao Nakagawa, Yokohama, JP;
Masato Sugiyama, Yokohama, JP;
Kenji Katsumata, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention is for separating luminance signal Y and color difference signal C from the composite color television signal and includes a frame memory for storing the composite color television signal, a motion detector for detecting motion of a picture image on the basis of the signal read out from the frame memory, a correlation detector for detecting the magnitude of vertical correlation of pictures on the basis of the signal read out from the frame memory, a vertical-axis filter for performing YC-signal separation through a filtering operation in the vertical-axis direction, a time-axis filter for performing a filtering operation in the time-axis direction, a two-dimensional filter for performing YC-signal separation through a filtering operation in both the horizontal and vertical directions, and a mixer for mixing the outputs of the three filters in accordance with the magnitude of motion and the magnitude of vertical correlation.