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US4809271A Expired / Lapsed US ⏱️ 0.0 years remaining

Voice and data multiplexer system

Assignee: Hitachi Ltd
•
Filing: 1987-11-13
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Granted: 1989-02-28
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Expires: 2007-11-13
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Abstract

Abstract A system in which two stations are respectively provided with telephones and data terminals such that a voice and data are multiplexed for communication between the two stations. Each station has a circuit to convert voice signals inputted from the telephone into a plurality of kinds of predetermined voice parameters, a circuit to determine a transmission mode depending on a predetermined parameter of the voice signals, a circuit to extract data having a length corresponding to the transmission mode from data to be transmitted from the data terminal, a circuit to select one of the plurality of voice parameters depending on the transmission mode, and a unit to edit a mode indicator indicating the transmission mode, the selected voice parameter, and the extracted data into a transmission block format corresponding to the transmission mode. The transmission block includes only voice information containing all voice parameters in the first mode; voice information and data information in the second mode, and voice information containing the minimum voice parameters and data information in the third mode.

Inventors

  • 👤 Kazuhiro Kondo
  • 👤 Toshiro Suzuki
  • 👤 Takanori Miyamoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 18:35
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/12; H04J3/17

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 161 words
A system in which two stations are respectively provided with telephones and data terminal means such that a voice and data are multiplexed for communication between said two stations, each said station comprising: means for converting voice signals inputted from said telephone into a plurality of kinds of predetermined voice parameters; means connected to said converting means for outputting a signal representing a transmission mode determined on the basis of a predetermined parameter of said voice signals; means for extracting from data to be transmitted from said data terminal data having a length according to said transmission mode signal; means connected to said converting means for selecting at least one of said plurality of voice parameters according to said transmission mode signal; and means connected to said extracting means and said selecting means for editing a mode indicator indicating said transmission mode, the selected voice parameter, and the extracted data into a transmission block format accordion to said transmission mode signal.
Claim 2
Independent Claim 161 words
A system in which two stations are respectively provided with telephones and data terminal means such that a voice and data are multiplexed for communication between said two stations, each said station comprising: means for converting voice signals inputted from said telephone into a plurality of kinds of predetermined voice parameters; means connected to said converting means for outputting a signal representing a transmission mode determined on the basis of a predetermined parameter of said voice signals; means for extracting from data to be transmitted from said data terminal data having a length according to said transmission mode signal; means connected to said converting means for selecting at least one of said plurality of voice parameters according to said transmission mode signal; and means connected to said extracting means and said selecting means for editing a mode indicator indicating said transmission mode, the selected voice parameter, and the extracted data into a transmission block format accordion to said transmission mode signal.
Claim 3
Dependent Claim 73 words
A system according to claim 1 wherein said each station further including: receiving means for separating a reception block sent from a communicating station into voice information and data; means connected to said receiving means for synthesizing a voice based on voice parameters included in said separated voice information and for outputting said voice to said telephone; and means connected to said receiving means for transmitting said separated data to said data terminal.
Claim 4
Dependent Claim 28 words
A system according to claim 1 wherein said mode signal outputting means determines the transmission mode from a value of one of said plurality of transmission voice parameters.
Claim 5
Dependent Claim 28 words
A system according to claim 2 wherein said mode signal outputting means determines the transmission mode from a value of one of said plurality of transmission voice parameters.
Claim 6
Dependent Claim 39 words
A system according to claim 1 wherein said mode signal outputting means determines the transmission mode based on a result of a comparison effected between one of said plurality of transmission voice parameters and one of said reception parameters.
Claim 7
Dependent Claim 49 words
A system according to claim 2 wherein said means for synthesizing the voice includes means for generating a noise parameter, and for synthesizing a voice on the basis of said noise parameter and at least one of said reception voice parameter when said mode indicator indicates a predetermined mode.

References Cited (Backward Citations)

US4479213A Cited
US4476559A Cited
US4528659A Cited
JPS59225620A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-02-28 1992-08-29 1993-02-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-02-28 1996-08-29 1997-02-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-02-28 2000-08-29 2001-02-28 $7700.00 Window Closed / Lapsed

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