Pulse or digital communications – Transmitters
Reexamination Certificate
1999-12-30
2003-09-23
Pham, Chi (Department: 2631)
Pulse or digital communications
Transmitters
C370S536000, C370S537000
Reexamination Certificate
active
06625228
ABSTRACT:
The present invention relates to the transmission of digital signals and faces the problem of transferring a digital stream by subdividing it into a plurality of streams at lower bit rate (hereinafter referred to as derived streams) transmitted in parallel over respective transmission links each exhibiting a respective pass band lower than that of the overall stream to be transmitted.
This subdivision of a stream into lower bit-rate streams transmitted in parallel is known in the art as “inverse multiplexing”.
A solution of this type is applicable, for instance, to the transmission of a digital video signal (of a band typically ranging from 3 to 13 Mbit/s) over a number (usually between 2 and 8) of transmission links at 2 Mbit/s. It is however understood that the scope of the invention is not limited to this specific example of application.
Since the individual streams propagate along a transmission network, they generally undergo different delays. At the reception side the need then arises of bundling them again so as to correctly restore the original digital stream.
The present invention aims at solving this problem in a particularly simple way, without requiring the use—in particular at the level of the end interfaces of the links—of complex and expensive system architectures.
According to the present invention, this aim is achieved by virtue of a method having the characteristics specifically mentioned in the following claims. The invention also concerns a device for implementing the method.
REFERENCES:
patent: 4667324 (1987-05-01), Graves
patent: 5274680 (1993-12-01), Sorton et al.
patent: 5617417 (1997-04-01), Sathe et al.
patent: 5987080 (1999-11-01), Berghager et al.
patent: 6002670 (1999-12-01), Rahman et al.
patent: 6148010 (2000-11-01), Sutton et al.
patent: 6205142 (2001-03-01), Vallee
patent: 277829 (1987-12-01), None
patent: 76649 (1988-04-01), None
patent: 184145 (1989-01-01), None
patent: 104344 (1991-05-01), None
patent: 108241 (1992-04-01), None
patent: 264843 (1992-09-01), None
patent: 188882 (1994-04-01), None
Nervo Giacolino
Quasso Roberto
Dubno Herbert
Pham Chi
Telecom Italia Lab S.p.A.
Tran Khanh Cong
LandOfFree
Method of and a device for digital signal 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 Method of and a device for digital signal transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and a device for digital signal transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3018877