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:
Apr. 12, 1994
Filed:
Jun. 28, 1991
Masaji Yoshida, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A contour compensation circuit comprises a first delay circuit to generate a first signal that is the image signal delayed by a first required time, a second delay circuit to generate a second signal that is the result of addition of the input image signal and the signal that is the input image signal delayed by twice the required time, a subtractor circuit that generates a third signal that is the first signal subtracted by the second signal, an adder circuit that adds the first signal and third signal and outputs contour compensation signal, and a control circuit to control the ratio of addition of the third signal in response to the second signal. On the basis of the second signal, the control circuit is configured from a voltage control amplifier (VCA) that controls a voltage gain of a signal so that the higher a level of the second signal is the larger a contour compensation amount becomes.