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:
May. 19, 2009
Filed:
Oct. 25, 2005
Deuk-geun Ahn, Seoul, KR;
Bong-soon Kang, Busan, KR;
Joo-young Ha, Gyeongsangnam-do, KR;
Ju-hyun Kim, Busan, KR;
Deuk-Geun Ahn, Seoul, KR;
Bong-Soon Kang, Busan, KR;
Joo-Young Ha, Gyeongsangnam-do, KR;
Ju-Hyun Kim, Busan, KR;
Samung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
We describe an apparatus and method for decoding a SECAM chrominance signal. The apparatus may include a band-pass filter to separate the chrominance signal from the composite video baseband signal. A down-mixer down mixes the chrominance signal from a high to a low frequency band to generate two signals having a substantially 90° phase difference. A cloche filter filters the two signals. A differentiator differentiates the cloche filtered signals. A multiplier squares each differentiated signal. An adder sums the squared result while a square root takes the square root of the sum.