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. 10, 1998
Filed:
Jul. 19, 1996
Satoshi Inoue, Kanagawa, JP;
Minoru Urushihara, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Upon NTSC broadcasting, switches are respectively electrically connected to the N sides and a three-dimensional comb filter is made up of memories, a subtracter, etc., whereby a carrier chrominance signal is separated from a video signal in accordance with a frame-to-frame process. In this case, the video signal is divided into two signals, which are in turn written into the memories. Upon EDTV2 broadcasting, the switches are respectively electrically connected to the E sides and a three-dimensional comb filter is made up of the memory and the subtracter, whereby a composite signal obtained by combining a carrier chrominance signal and a horizontal resolution supplementary signal is separated from the video signal. The switch is electrically connected to the E side and a three-dimensional comb filter is made up of the memory, a subtracter, etc., whereby a horizontal resolution supplementary signal is separated from a composite signal in accordance with a field-to-field process. The capacity of each of the memories can be efficiently used and hence a system can be integrated into compact form.