Facsimile and static presentation processing – Facsimile – Facsimile measuring – testing – or calibrating
Patent
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
Aoki Kazuhiko
Moriyama Yutaka
Shibuya Kazuhiro
Yokoyama Naomi
Fujitsu Limited
Grant II Jerome
Lee Thomas D.
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