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. 20, 2007
Filed:
Apr. 11, 2002
Shingo Shimazaki, Kanagawa, JP;
Shingo Shimazaki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention provides an edge enhancing apparatus () including a filter () to extract a horizontal high-frequency component of a video signal, a rise/fall detection detector () to detect leading and trailing edges of the horizontal high-frequency component of the video signal, and a waveform balancer () to multiply the high frequency component extracted by the filter () by a gain to generate an enhancement signal for enhancing the original video signal. The waveform balancer () works to make the gain a value larger than '1' when the signal level of the high frequency component at the leading edge of the video signal is positive while making the gain a value of '1' or smaller than “1” when the signal level of the high frequency component at the leading edge of the video signal is negative, and make the gain a value of “1” or smaller than “1” when the signal level of the high frequency component at the trailing edge of the video signal is positive while making the gain a value larger than “1” when the signal level of the high frequency component at the trailing edge of the video signal is negative.