Television – Television transmitter circuitry – Modulator
Patent
1996-03-06
1999-02-23
Lee, Michael
Television
Television transmitter circuitry
Modulator
348475, 332151, 375298, 455 47, 455102, H04N 540
Patent
active
058750053
ABSTRACT:
The method for generating a modulated television signal involves performing a first filtering and a second filtering to obtain two signals, one having a passband that is equal to complete passband and the other one having a passband that is equal to the sideband to be suppressed. The signal having a complete passband is amplitude-modulated with a video carrier, obtaining a first signal. The signal having a passband equal to the sideband to be suppressed is then divided into a first component and a second component, and the first component is phase-shifting by 90.degree. with respect to the second component. The first component is modulated with a video carrier that is phase shifted by 90.degree., obtaining a second signal. The second component of the signal having a passband equal to the sideband to be suppressed is modulated with the video carrier, obtaining a third signal. The second and third signals are then subjected to an algebraic sum, obtaining a fourth signal. The fourth signal is then subtracted from the first signal, obtaining a fifth signal that represents the television signal having the desired sideband.
REFERENCES:
patent: 4882614 (1989-11-01), Kageyama et al.
patent: 4882725 (1989-11-01), Noda et al.
patent: 4918515 (1990-04-01), Faroudja
patent: 5122879 (1992-06-01), Ito
patent: 5243304 (1993-09-01), Rixon
patent: 5534933 (1996-07-01), Yang
Josif Albert
Lee Michael
M.B. International S.r.l.
Modiano Guido
Murrell Jeffrey S.
LandOfFree
Method for generating a modulated television signal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for generating a modulated television signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for generating a modulated television signal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-311716