Conversion of a fax modulation to a data modulation

Details Conversion of a fax modulation to a data modulation Conversion of a fax modulation to a data modulation

1993-11-15

1996-04-30

Coles, Sr., Edward L.

Pulse or digital communications

Transceivers

Modems

358434, 358442, 379 93, 379100, H04L 2500, H04L 2700, H04N 100, H04M 1100

Patent

active

055132120

ABSTRACT:
A simultaneous voice and data (SVD) modem is coupled to both a fax machine, which includes a fax modem, and a telephone set. When the fax machine initiates a fax-call, the SVD modem emulates signaling of the local loop. This allows the fax machine to operate without requiring modifications to the fax machine. After establishing a data connection with a far-end SVD modem, the near-end SVD modem demodulates the fax modulation signal from the fax machine to recover the fax data. The fax data is then re-modulated using a data modulation technique for transmission to the far-end SVD modem. The latter, demodulates the data portion of the signal to recover the fax data, which is then re-modulated using a fax modulation technique for transmission to a far-end fax machine.

REFERENCES:
patent: 4215243 (1980-07-01), Maxwell
patent: 4476496 (1984-10-01), Thaler
patent: 4878228 (1989-10-01), Takahashi
patent: 4931250 (1990-06-01), Greszczuk
patent: 4974099 (1990-11-01), Lim et al.
patent: 5036513 (1991-07-01), Greenblatt
patent: 5065427 (1991-11-01), Godbole
patent: 5123033 (1992-06-01), Beck
patent: 5187591 (1993-02-01), Guy et al.
patent: 5208850 (1993-05-01), Kino
patent: 5233627 (1993-08-01), Kozima et al.
patent: 5251217 (1993-10-01), Travers et al.

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