Facsimile signal relay method and apparatus therefor

Details Facsimile signal relay method and apparatus therefor Facsimile signal relay method and apparatus therefor

1995-06-28

1998-05-19

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Facsimile measuring, testing, or calibrating

358405, H04N 100

Patent

active

057543100

ABSTRACT:
For the purpose of efficiently determining the transmission capacity of a digital relay transmission path, adjusting the phase between commands and responses, and detecting faults, in the case in which a judgment is made that the image information transmission path capacity between communication apparatuses is smaller than or inferior to the performance of the communication apparatuses, when a training signal for the purpose of performing a circuit check is sent from a transmitting-side facsimile machine, the transmitting-side communication apparatus intentionally sends a failed training signal to the receiving-side communication apparatus, this giving notice of an abnormal termination, in response to which the transmitting-side facsimile machine performs a fallback operation so as to reduce the communication speed to a speed at which relaying is possible between the communication apparatuses before sending the image information.

REFERENCES:
patent: 5159465 (1992-10-01), Maemura et al.
patent: 5377017 (1994-12-01), Lam
patent: 5418624 (1995-05-01), Ahmed

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