Method of adjusting the end of transmission in a modem

Details Method of adjusting the end of transmission in a modem Method of adjusting the end of transmission in a modem

1990-01-22

1991-03-26

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

375 8, H04M 1100

Patent

active

050035827

ABSTRACT:
The method of adjusting the end of transmission in a data transmission system between a transmitting Data Terminal Equipment (DTE) and a receiving DTE connected respectively by means of a transmitting modem and a receiving modem linked therebetween by a telephone line, consisting in transmitting by the transmitting modem an End sequence of predetermined duration immediately after the data message and just preceding the signal energy drop, and composed of bits of the same polarity. The transmission of the End sequence by the transmitting modem is started as soon as the data message from the transmitting DTE includes an uninterrupted sequence of bits of the same polarity, the End sequence being completed by modem with bits of the same polarity until the predetermined duration, after a request signal for transmitting from the transmitting DTE has turned off.

REFERENCES:
patent: 3783194 (1974-01-01), Vilips et al.
patent: 3979559 (1976-09-01), Roedel et al.
patent: 4009356 (1977-02-01), Borysiewicz et al.
patent: 4317207 (1982-02-01), Fujimura et al.
patent: 4669090 (1987-05-01), Betts et al.
patent: 4833696 (1989-05-01), Ichiyoshi

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