Television – Television transmitter circuitry – Modulator
Reexamination Certificate
2006-07-18
2006-07-18
Lee, Michael H. (Department: 2614)
Television
Television transmitter circuitry
Modulator
C725S151000, C348S723000
Reexamination Certificate
active
07079194
ABSTRACT:
An RF modulator includes a C/L delay compensation function of compensating for a delay of a luminance signal with respect to a chrominance signal occurring during demodulating a video signal in a TV set. The RF modulator includes a C/L delay compensation unit delaying a luminance signal by 170 nsec and combining the delayed luminance signal with a chrominance signal to output a composite image signal having a C/l delay of −170 nsec and a frequency modulation unit modulating the video signal received from the C/L delay compensation unit into a high frequency signal of a predetermined broadcasting channel in a single module or package. The RF modulator outputs a video signal having the luminance signal delayed by 170 nsec with respect to the chrominance signal and complies with a C/L delay standard without adding any additional C/L delay compensation unit to the RF modulator.
REFERENCES:
patent: 4747159 (1988-05-01), Kato
patent: 4794458 (1988-12-01), Nagatomi
patent: 4943847 (1990-07-01), Katznelson
patent: RE34169 (1993-01-01), Osburn et al.
patent: 5748261 (1998-05-01), Pugel
Go Chae Dong
Kim Sang Suk
Kwon Kyoung Soo
Lee Jong Jin
Lee Youn Joong
Lee Michael H.
Lowe Hauptman & Berner LLP.
Samsung Electro-Mechanics Co. Ltd.
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