Television – Basic receiver with additional function – Multimode
Patent
1996-02-12
1998-05-19
Peng, John K.
Television
Basic receiver with additional function
Multimode
348736, H04N 327, H04N 560, H04N 562
Patent
active
057542520
ABSTRACT:
In a multi-standard television receiver in which a picture signal contained in a television signal and modulated on a picture carrier is converted to a picture signal intermediate frequency, and a stereo sound signal or two-tone signal contained in the television signal and modulated on two sound carriers is converted to two first sound signal intermediate frequencies, it is ensured for possibly simple filtering of the sound signals, also at different frequency spacings between the picture carrier and the sound carriers, that two sound signal filters (8, 9) having a fixed, predetermined filter central frequency are provided for filtering the stereo sound signal, and that frequency shift circuitry (6) is provided which, in dependence upon the frequency spacing between the picture carrier of the television signal and its sound carriers, shifts the picture carrier contained in the picture signal converted to the IF position to such a frequency that the sound IF signals of the first sound intermediate frequencies mixed with this shifted picture carrier occur at two second sound signal intermediate frequencies which are filtered by the sound IF filters (8, 9).
REFERENCES:
patent: 4405834 (1983-09-01), Buhse et al.
patent: 4470071 (1984-09-01), Rindal
patent: 4811096 (1989-03-01), Gakumura
patent: 4821097 (1989-04-01), Robbins
patent: 4933767 (1990-06-01), Hyanutake
patent: 5570137 (1996-10-01), Goeckler
Television Engineering Handbook, K.B. Benson, Table 21-5, pp. 21.10-21.11, 1986.
"Adjustment Free Multistandard Sound-IF Integrated Circuit With Automatic Sound Carrier Indentification", by M. Rieger et al, IEEE, 1993, pp. 104-105.
Buhse Ulf
Kuhn Hans-Jurgen
Goodman Edward W.
Peng John K.
Srivastava Vivek
U.S. Philips Corporation
LandOfFree
Multi-standard television receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-standard television receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-standard television receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1857545