Facsimile apparatus

Details Facsimile apparatus Facsimile apparatus

1992-10-30

1997-04-01

Roskoski, Bernard

Facsimile and static presentation processing

Facsimile

Auxiliary signal

379 93, H04B 1500

Patent

active

056172206

ABSTRACT:
In a facsimile apparatus having a V.17 MODEM, a controller examines a FIF of a received PPR. If all FIF bits are "1", the controller quickly transmits a CTC including transmission speed information by a V.21 MODEM then transmits a long training by a V.17 MODEM, transmission speed of which has been set to that indicated by the transmission speed information, and retransmits the frames required by the PPR at transmission speed of previous transmission of image information to the current retransmission or transmission speed slower than that of previous retransmission to the current retransmission. If there are any "0" bits in the FIF, the apparatus transmits a short training by the V.17 MODEM and retransmits the the frames required by the PPR at the transmission speed of the previous transmission of image information to the current transmission or transmission speed of previous retransmission to the current retransmission.

REFERENCES:
patent: 4829524 (1989-05-01), Yoshida
patent: 4885755 (1989-12-01), Yoshida
patent: 4897831 (1990-01-01), Negi et al.
patent: 4999716 (1991-03-01), Nakamura
patent: 5031179 (1991-07-01), Yoshida et al.
patent: 5127013 (1992-06-01), Yoshida

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