Pulse or digital communications – Transmitters – Amplitude modulation
Reexamination Certificate
2007-11-13
2007-11-13
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Transmitters
Amplitude modulation
C332S167000
Reexamination Certificate
active
10227593
ABSTRACT:
A stereo multiplex encoder (MPX) for FM transmission with a digital signal processor utilizes residual sideband modulation in stereo transmission instead of the conventional double sideband modulation. The adjustment of the sampling frequency to the modulation frequency (fmod=fs/2) is carried out, so that the antialiasing filter of the DAC can be used which produces the residual sideband modulated signal.
REFERENCES:
patent: 4565440 (1986-01-01), Bloechl et al.
patent: 4771464 (1988-09-01), Kadin et al.
patent: 4835791 (1989-05-01), Daoud
patent: 4974236 (1990-11-01), Gurcan et al.
patent: 4994769 (1991-02-01), Kishi
patent: 5047705 (1991-09-01), Kishi
patent: 5115468 (1992-05-01), Asahi et al.
patent: 6272226 (2001-08-01), Khan et al.
patent: 6724832 (2004-04-01), Hershberger
patent: 6810090 (2004-10-01), Perlow
patent: 4210069 (1993-09-01), None
Tseng, Specifications of Ideal Prototype Filters for Designing Linear Phase FIR Filters, Nov. 3-6, 1996-1997, vol. 1, pp. 29-33 vol. 1; 1997 IEEE.
Breitschädel Hannes
Schlager Peter
Aghdam Freshteh N
AKG Acoustics GmbH
Fan Chieh M.
Friedrich Kueffner
LandOfFree
Stereo multiplex encoder (MPX) for FM transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stereo multiplex encoder (MPX) for FM transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stereo multiplex encoder (MPX) for FM transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3868400