Is a
Patent attributes
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michio Kobayashi0
Date of Patent
September 12, 2006
0Patent Application Number
101983480
Date Filed
July 19, 2002
0Patent Primary Examiner
Patent abstract
A picture quality improvement device has two-dimensional low-pass filter that takes as input a luminance signal YIN that is obtained from a video signal and that extracts low-pass components for a vertical direction and a horizontal direction of the input luminance signal YIN. The picture quality improvement device adds an edge signal, which is obtained by subtracting from luminance signal YIN the low-pass extraction signal (LPF) that has been extracted by two-dimensional low-pass filter, to luminance signal YIN. Two-dimensional low-pass filter is constituted such that the extraction gain of the vertical direction low-pass component and the extraction gain of the horizontal direction low-pass component are independently adjusted.
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