Pulse or digital communications – Receivers
Patent
1997-09-23
1999-11-30
Bocure, Tesfaldet
Pulse or digital communications
Receivers
375346, 370523, H04L 2706, H03D 104
Patent
active
059955589
ABSTRACT:
A rob bit compensation system improves the accuracy of digital signals received from and transmitted to a digital network, such as a telephone network, that employs rob bit signaling (RBS) wherein the network periodically robs a bit for its own use. The system can be employed within a digital modem or a coder/decoder (codec), each of which is interconnected with the digital network that periodically robs a bit every nth frame, where n is, for example, 6 or 24. The system can be implemented in association with the receive subsystem of the digital modem or in the communications paths within the codec associated with receiving data from the digital network. The system includes a compensation control utilized to detect when a least significant bit (LSB) of a particular frame of data consistently exhibits a certain logic state, either a mark (logical 1) or a space (logical 0). When an LSB of a particular frame does consistently exhibit the certain logic state, then the particular frame is considered an RBS frame. Furthermore, the compensation control causes a quantity (e.g., one-half of an LSB) to be mathematically combined (added or subtracted, whichever is appropriate) with the data corresponding with the RBS frame via a set of adders in order to enhance accuracy of the RBS frame.
REFERENCES:
patent: 3452330 (1969-06-01), Avery
patent: 4529979 (1985-07-01), Kusama et al.
patent: 4571736 (1986-02-01), Agrawal et al.
patent: 4589111 (1986-05-01), Adachi
patent: 4677645 (1987-06-01), Kaniwa et al.
patent: 4720829 (1988-01-01), Fukasawa et al.
patent: 4856030 (1989-08-01), Batzer et al.
patent: 4885755 (1989-12-01), Yoshida
patent: 4926355 (1990-05-01), Boreland
patent: 4928276 (1990-05-01), Blondeau, Jr. et al.
patent: 5027356 (1991-06-01), Nakamura et al.
patent: 5263081 (1993-11-01), Nightingale et al.
patent: 5282197 (1994-01-01), Kreitzer
patent: 5406583 (1995-04-01), Dagdeviren
patent: 5422876 (1995-06-01), Turudic
patent: 5491695 (1996-02-01), Meagher et al.
patent: 5502733 (1996-03-01), Kishi et al.
patent: 5506956 (1996-04-01), Cohen
patent: 5528579 (1996-06-01), Wadman et al.
patent: 5528625 (1996-06-01), Ayanoglu et al.
patent: 5533121 (1996-07-01), Suzuki et al.
patent: 5577105 (1996-11-01), Baum et al.
patent: 5577196 (1996-11-01), Peer
patent: 5724939 (1998-03-01), Dagdeviren
Method and Apparatus Compensating for Effects of Digital Loss Insertion In Signal Transmissions Between Modems, U.S. application No. 08/390,185, filed Feb. 17, 1995, pending.
Betts William Lewis
Souders Keith Alan
Bocure Tesfaldet
Telogy Networks Inc.
LandOfFree
Rob bit compensation system and method associated with a receive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rob bit compensation system and method associated with a receive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rob bit compensation system and method associated with a receive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1682882