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:
Sep. 09, 1997
Filed:
Dec. 04, 1995
Akihiro Hori, Tokyo, JP;
Nippon Television Network Corporation, Tokyo, JP;
Abstract
A converter comprising an input terminal 1 for receiving a chrominance signal of 4:2:2P format progressive scan signal, a low pass filter 2 for passing low frequency component contained in the chrominance signal input to the input terminal 1, high pass filter 3 for passing high frequency component contained in the chrominance signal input to the input terminal 1, a detection means 4 for detecting the high frequency component level of the chrominance signal filtered with the high pass filter 3, a sub-sampling means 6 for sub-sampling the chrominance signal and converting the sub-sampled signal into a chrominance signal of 4:2:2P format progressive scan signal and a switch 5 for connecting the low pass filter 2 and the sub-sampling means 6 to input the low pass filtered chrominance signal to the sub-sampling means 6 when the high frequency component level is detected to be a predetermined level or higher, and for connecting the input terminal 1 and the sub-sampling means 6 to input the chrominance signal input to the input terminal 1 to the sub-sampling means 6 when the high frequency component level is detected to be lower than the predetermined level.