Speech packet communication system and method

Details Speech packet communication system and method Speech packet communication system and method

1989-11-21

1992-07-14

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, 370 856, 3408255, 34082551, H04J 37, H04J 302, H04Q 1104

Patent

active

051309858

ABSTRACT:
A speech packet communication system for making speech communication among a plurality of speech terminals and including a communication network. The communication network includes a transmission path and a plurality of intermediate switching nodes, each controlling the traffic of a plurality of speech packets received from the transmission path or other intermediate switching nodes in accordance with priority indicators contained in the respective packets. Each speech terminal converts the input speech signal to packets, transmits the packets onto the transmission path or decodes speech packets received from the transmission path. Particularly, when the terminal converts the input speech signal to packets, it uses a special purpose function of determining a priority indicator assigned to the packet to greatly improve the quality of a reproduced speech at a receiving end.

REFERENCES:
patent: 4993022 (1991-02-01), Kondo et al.
Proc. Globecom '87 (1987) pp. 45.3.1-45.3.5, Han Ying Yin et al., Congestive Control for Packet Voice by Selective Packet Discerding.
IEEE Transaction on Comm vol. Com. 28, No. 7, Jul. 1980, pp. 1040-1046, Embodied DPCM for variable bit rate transmission, D. J. Goodman.
"Variable Rate Embedded ADPCM with Preceptually Appropriate Criteria", A-4, 1988, the Institute of Electronics, Inf. and Comm.
Overview of the ADPCM Coding Algorithm, Proc. Globe com '84, pp. 23.1.1-23.1.4, W. R. Daumer et al.

Affiliated with

Also associated with

Rating

Speech packet communication system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speech packet communication system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech packet communication system and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-341563