Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent
1998-04-13
1999-09-07
Chan, Wing F.
Telephonic communications
Telephone line or system combined with diverse electrical...
To produce visual-graphic copy
37910006, 379 9331, 358434, H04M 1100
Patent
active
059498617
ABSTRACT:
A system and method for extending the time period at which a facsimile response signal can be received before a time-out occurs without altering the underlying transmission protocol. The disclosed system and method determines a response time before which a response signal must be received by a transmitting facsimile station in order to avoid a time-out event. Before the response time arrives, the disclosed system and method generates and transmits a delay signal to the transmitting facsimile station which does not substantively interfere with ongoing communications. Instead, the delay signal causes the transmitting facsimile station to tickle an internal time-out counter which results in an extension of the response signal delay tolerance. Delay signal frames can be transmitted repeatedly to accommodate any desired time-out period.
REFERENCES:
patent: 5790641 (1998-08-01), Chan et al.
Chan Christina K.
Kwon Hongsoon H.
Lam Simon S.
Larson William A.
Chan Wing F.
Crane John D.
Johnson W. Glen
Northern Telecom Limited
Williams Vernon E.
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