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:
Nov. 03, 1992
Filed:
Jan. 24, 1991
Nippon Television Network Corporation, Tokyo, JP;
Abstract
An apparatus for transmitting an NTSC color signal superposed with a signal corresponding to monochromatic characters with a colored contour, which is obtained from a color character super device, comprises a first circuit responsive the NTSC signal from the color character super device to determine an area on a television receiver screen on which signal out of NTSC signal standard may be displayed, a second circuit for deriving chrominance signal spectrum out of NTSC standard and means for gating the chrominance signal spectrum with an output of the first circuit and then for subtracting the gated chrominance signal spectrum from the NTSC signal to thereby at least reduce signal component thereof out of the NTSC standard signal.