Pulse or digital communications – Repeaters – Testing
Patent
1986-06-26
1988-10-25
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 58, 375121, 370103, 371 46, H04B 138
Patent
active
047808837
ABSTRACT:
A method for changing the data transmission rates in a synchronous data communication system including a first modem and a second modem coupled together through a transmission channel, the transmission channel including a first path for transmissions from the first modem to the second modem and a second path for transmission from the second modem to the first modem, includes the steps of determining, at the first modem, that the second path of the transmission channel is adequately high in quality to support an increase in transmission rate. Next it is determined, at the second modem, that the first path of the transmission channel is adequately high in quality to support an increase in transmission rate. A training sequence is then transmitted at an increased transmission rate from the second modem to the first modem. Next, a training sequence is transmitted at the increased transmission rate from the first modem to the second modem.
REFERENCES:
patent: 3457550 (1969-07-01), Gibson et al.
patent: 3534264 (1970-10-01), Blasbalg et al.
patent: 3536840 (1970-10-01), Sullivan
patent: 4385384 (1983-05-01), Rosbury et al.
patent: 4438511 (1984-03-01), Baran
patent: 4541045 (1985-09-01), Kromer,III
patent: 4562426 (1985-12-01), Forney, Jr.
patent: 4578800 (1986-03-01), Yasuda et al.
patent: 4583236 (1986-04-01), Kromer et al.
patent: 4589111 (1986-05-01), Adachi
patent: 4606044 (1986-08-01), Kudo
patent: 4630126 (1986-12-01), Kaku et al.
"The Viterbi Algorithm", Proceedings of the IEEE, vol. 61, No. 3, Mar. 1973; Forney, Jr.; pp. 268-278.
Hayes, "The Viterbi Algorithm Applied to Digital Data Transmission", Journal of Communications Society, vol. 13, pp. 15-20, Mar. 1975.
Computer Design, Oct. 15, 1985, p. 108.
Codex 2600 Series Advertisement, 1985.
Codex Model 2660 Modem, 10/85.
Farias Juan E.
Fernandez Raul F.
O'Connor Donald C.
Miller Jerry A.
Racal Data Communications Inc.
Safourek Benedict V.
Telesz Jr. Andrew J.
LandOfFree
Data modem with adaptive synchronized speed change does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data modem with adaptive synchronized speed change, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data modem with adaptive synchronized speed change will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2273926