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. 17, 2002
Filed:
Jan. 27, 1999
Takatsugu Nakajima, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed herein is an edge enhancement circuit which is capable of reducing required memory capacity and power consumption. An input analog video signal HVa is sampled based on a clock signal CLK , to obtain a digital video signal HVb. An edge-enhanced signal HIEa is obtained by a filter operation using the video signal HVb and its delayed signals HVc and HVd. The video signal HVa is sampled based on a clock signal CLK kept in inverse phase with the clock signal CLK to obtain a digital video signal HVe, after which its delayed signal HVf is obtained. Pixel data constituting the video signals HVf and HVc are alternately taken out based on a clock signal CLK having a frequency corresponding to that of the clock signal CLK to obtain a main-line signal HVg. The main-line signal HVg and edge-enhanced signal HIEa are respectively converted to analog signals, which in turn are added together to obtain an edge-enhanced output analog video signal HVi. Pixel data for obtaining the edge-enhanced signal are set at one-pixel intervals with respect to that about the main-line signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile