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US4922348B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Facsimile service

Assignee: AT&T Inc
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Filing: 1989-02-10
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Granted: 1994-10-11
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Expires: 2009-02-10
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Abstract

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.

Inventors

  • 👤 Alexander C Gillon
  • 👤 Adam V Reed
  • 👤 John M Scanlon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 11:01
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32358; H04N1/324; H04N1/32406; H04N1/32443; H04N1/333; H04N1/33307; H04N1/33323; H04N1/33346; H04N1/33361; H04N2201/00; H04N2201/32; H04N2201/333; H04N2201/33307; H04N2201/33342; H04N2201/3335; Y; Y10; Y10S; Y10S379/00; Y10S379/902; Y10S379/905

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-10-10 1998-04-11 1998-10-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-10-10 2002-04-11 2002-10-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-10-10 2006-04-11 2006-10-11 $7700.00 Window Closed / Lapsed

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