Facsimile and static presentation processing – Facsimile – Facsimile relay system
Patent
1989-02-10
1990-05-01
Groody, James J.
Facsimile and static presentation processing
Facsimile
Facsimile relay system
358434, 358440, 358442, H04N 132, H04N 121
Patent
active
049223488
ABSTRACT:
This invention relates to an arrangement for efficiently transmitting facsimile signals from a facsimile source to a facsimile destination using a standard facsimile user interface. The connected switched communications network recognizes that the call is from a facsimile source or to a facsimile destination and causes the facsimile signals to be transmitted at the transmission speed of the source to storage in a network. Subsequently, the signals are transmitted from storage to a facsimile destination at the transmission speed of the destination when the destination becomes available. Advantageously, the source need not wait for the destination to become available before transmitting, and the transmission can take place at a bit rate that matches the source and the destination even when these bit rates are different. Retransmission because of errors in one link is only required for that link, i.e., from the source to the storage or from the storage to the destination. Advantageously, this is accomplished without changing the very simple user interface of prior art facsimile transceivers.
REFERENCES:
patent: 3920895 (1975-11-01), Vieri et al.
patent: 4532554 (1985-07-01), Skala
patent: 4586086 (1986-04-01), Ohzeki
"Enhanced WorkGroup System Products", AT&T (Manufacturer's Brochure), 1988, pp. 1-4.
"AT&T Fax Connection", AT&T (Manufacturer's Brochure), 1988, pp. 1-2.
"BIT-IV", NEC (Manufacturer's Brochure), 1988, pp. 1-4.
"Telematic Services: Operations and Quality of Service", CCITT Red Book, vol. II-Fascicle II.5, Recommendations F.160-F.350, VIIIth Plenary Assembly, Malaga-Torremolinos, Oct. 8-19, 1984.
Gillon Alexander C.
Reed Adam V.
Scanlon John M.
American Telephone and Telegraph Company
Groody James J.
Svihla Randall S.
Ulrich Werner
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