Electronic memory system and method for use in system for reduci

Details Electronic memory system and method for use in system for reduci Electronic memory system and method for use in system for reduci

1997-10-03

2000-01-18

Chin, Stephen

Pulse or digital communications

Pulse code modulation

Correcting or reducing quantizing errors

375222, 375254, 341110, 379399, H04B 1404

Patent

active

060163275

ABSTRACT:
An electronic memory system and method for use in a system for reducing quantizing noise is presented. In some Internet access and other dial-up services, modems or other sources connect into analog switching systems, and then are A/D-converted to reach remote switching offices. There, the digitized signal is converted back to analog, only to be re-digitized for T1 transmission. In the invention, the sample points used to re-digitize the signal are encoded using a dedicated electronic memory structure which permits efficient determination of valid data points.

REFERENCES:
patent: 4953117 (1990-08-01), Lagadec
patent: 5204879 (1993-04-01), McConnell
patent: 5270808 (1993-12-01), Tanioka
patent: 5394437 (1995-02-01), Ayanoglu et al.
patent: 5406583 (1995-04-01), Dagdeviren
patent: 5557672 (1996-09-01), Perry et al.
AT&T, Telecommunications Transmission Engineering, vol. 2, Facilities, pp. 532.
AT&T, Telecommunications Transmission Engineering, vol. 3, Networks and Services, Chapter 3, pp. 59.
McNees, G.K., "Transmission Performance of .mu.=255 Quantization in a Local Digital Office," AT&T, The Bell System Technical Journal, vol. 59, No. 10; Dec. 1980, pp. 1943-1964.
Crue, C.R., et al., "D4 Channel Bank Family: The Channel Bank," AT&T, The Bell System Technical Journal, Nov. 1982, pp. 2611-2664.
Adams, R.L., et al., "D4 Channel Bank Family: Thin-Film Dual Active Filters for Pulse Code Modulation Systems," AT&T, The Bell System Technical Journal, Nov. 1982, pp. 2815-2838.

Affiliated with

Also associated with

Rating

Electronic memory system and method for use in system for reduci does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic memory system and method for use in system for reduci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic memory system and method for use in system for reduci will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-567771