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US Patent 7212246 Image signal format detection apparatus and method

Patent 7212246 was granted and assigned to Samsung on May, 2007 by the United States Patent and Trademark Office.

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Patent
Patent
1

Patent attributes

Current Assignee
Samsung
Samsung
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
72122461
Patent Inventor Names
You-young Jung1
Young-ho Lee1
Seung-joon Yang1
Date of Patent
May 1, 2007
1
Patent Application Number
107146051
Date Filed
November 18, 2003
1
Patent Primary Examiner
‌
Michael H. Lee
1
Patent abstract

An image signal format detection apparatus and method. The image signal format detection apparatus includes a first summed absolute difference (SAD) value calculation unit for calculating, from a previous field, a current field, and a next field of a time-consecutive image signal, a first SAD value with reference to pixel values of the current field and the previous field. A second SAD value calculation unit calculates a second SAD value with reference to pixel values of the current field and the next field. A pattern generation unit generates a detection pattern based on a result of a comparison of the first and second SAD values,; and a pattern analysis unit stores the detection pattern by field, compares the stored detection pattern of a series of fields with a predetermined verification pattern, and determines whether the image signal is an image signal produced in 2:2 pull-down. The apparatus detects an image signal produced in 2:2 pull-down by using the SAD values between fields, and can be applied to a deinterlacing device or the like.

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