Moden signal detecting system for adaptive differential PCM CODE

Details Moden signal detecting system for adaptive differential PCM CODE Moden signal detecting system for adaptive differential PCM CODE

1990-11-16

1993-04-13

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375 8, H04L 2300

Patent

active

052029050

ABSTRACT:
A modem signal detecting system for an adaptive differential code modulation system, which is intended for detecting a modem training signal, comprises a comparison and decision circuit which receives an input signal from a signal power calculator and compares a signal power level during a silent period and a training period of a modem training signal. The comparison and decision circuit then decides whether or not the transmission quality of the transmission line is suitable for the modem communication.

REFERENCES:
patent: 3479599 (1969-11-01), Molik
patent: 4318128 (1982-03-01), Sauvanet
patent: 4433425 (1984-02-01), de Jaeger
patent: 4606045 (1986-08-01), Miller
patent: 4780886 (1988-10-01), Maddens
patent: 4788692 (1988-11-01), Takebayashi
patent: 4956851 (1990-09-01), Wolensky et al.
"Considerations on V.299600 Bit/s Voiceband Data Transmission" from CCITT, 1986.
"Usefulness of the Proposed Method of Switching to Data-Optimized Parameters in G.721 ADPCM", CCITT, 1986.
"32kBit/s Adaptive Differential Pulse Code Modulation (ADPCM)", Recommendation G.721, 1984, pp. 125-131.

Affiliated with

Also associated with

Rating

Moden signal detecting system for adaptive differential PCM CODE does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Moden signal detecting system for adaptive differential PCM CODE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moden signal detecting system for adaptive differential PCM CODE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1160500