US5793415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Videoconferencing and multimedia system
Assignee: ImageTel International Inc
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Filing: 1995-05-15
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Granted: 1998-08-11
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Expires: 2015-05-15
Abstract
Abstract A videoconferencing system is provided which comprises a personal computer having a 32-bit multi-tasking, native-networking operating system and a touch screen graphic user interface for controlling the system. The videoconferencing system is configured for the integration of applications programs, the transfer of data outside the bandwidth of a videoconference and remote diagnostics. Circuits for pooling CODECs and bridging audio signals are also provided.
Inventors
- 👤 Earl A. Gregory, III
- 👤 R. Dean Heibert
- 👤 Thomas A. Niemann
- 👤 Mark Fauth
- 👤 Bradford Janssen
- 👤 Gregory Stinson
- 👤 Aleksandr Shkiler
- 👤 Hal Perdew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:22
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/14; H04N7/141; H04N7/147; H04M; H04M3/00; H04M3/42; H04M3/56; H04M3/567; H04N7/15; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04M3/563; H04Q2213/00; H04Q2213/13034; H04Q2213/13093; H04Q2213/13096; H04Q2213/13176; H04Q2213/13199; H04Q2213/13209; H04Q2213/13248; H04Q2213/13292; H04Q2213/1332; H04Q2213/13337; H04Q2213/13389
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
An audio bridging circuit for a videoconferencing system which establishes videoconferences between at least one local videoconference site and a plurality of remote videoconference sites, comprising: first and second coder and decoder units for receiving audio signals from respective ones of said plurality of remote videoconference sites; two first audio distribution devices connected, respectively, to said first and second coder and decoder units, said first audio distribution devices being operable to provide one of a plurality of inputs thereof to an output connected to a corresponding one of said first and second coder and encoder units; two second audio distribution devices connected, respectively, to said first and second coder and decoder units for providing an input from a corresponding one of said first and second coder and decoder units to one of a plurality of outputs thereof, said output of said second audio distribution device connected to said first coder and decoder unit being connected to one of said inputs of said first audio distribution device connected to said second coder and decoder unit, and said output of said second audio distribution device connected to said second coder and decoder unit being connected to one of said inputs of said first audio distribution device connected to said first coder and decoder unit; and a matrix circuit for providing audio signals from said local videoconference site to one of said inputs of each of said first audio distribution devices.
Claim 2
Dependent Claim
238 words
An audio bridging circuit for a videoconferencing system which establishes videoconferences between at least one local videoconference site and a plurality of remote videoconference sites, comprising: first and second coder and decoder units for receiving audio signals from respective ones of said plurality of remote videoconference sites; two first audio distribution devices connected, respectively, to said first and second coder and decoder units, said first audio distribution devices being operable to provide one of a plurality of inputs thereof to an output connected to a corresponding one of said first and second coder and encoder units; two second audio distribution devices connected, respectively, to said first and second coder and decoder units for providing an input from a corresponding one of said first and second coder and decoder units to one of a plurality of outputs thereof, said output of said second audio distribution device connected to said first coder and decoder unit being connected to one of said inputs of said first audio distribution device connected to said second coder and decoder unit, and said output of said second audio distribution device connected to said second coder and decoder unit being connected to one of said inputs of said first audio distribution device connected to said first coder and decoder unit; and a matrix circuit for providing audio signals from said local videoconference site to one of said inputs of each of said first audio distribution devices.
Claim 3
Dependent Claim
156 words
An audio bridging system for a videoconferencing system which establishes videoconferences between first and second videoconference sites, comprising: a first coder and decoder unit connected to said second videoconference site for receiving audio signals therefrom; a first audio distribution device connected to said first coder and decoder unit and operable to provide one of a plurality of inputs thereof to an output connected to said first coder and decoder unit; a second audio distribution device connected to said first coder and decoder unit and operable to provide an input from said first coder and decoder unit to one of a plurality of outputs thereof; a matrix switch having a first output connected to an input of said first audio distribution device and a first input connected to an output of said second audio distribution device; and a microphone mixer unit connected to said matrix circuit and to at least one microphone at said first videoconference site.
Claim 4
Dependent Claim
156 words
An audio bridging system for a videoconferencing system which establishes videoconferences between first and second videoconference sites, comprising: a first coder and decoder unit connected to said second videoconference site for receiving audio signals therefrom; a first audio distribution device connected to said first coder and decoder unit and operable to provide one of a plurality of inputs thereof to an output connected to said first coder and decoder unit; a second audio distribution device connected to said first coder and decoder unit and operable to provide an input from said first coder and decoder unit to one of a plurality of outputs thereof; a matrix switch having a first output connected to an input of said first audio distribution device and a first input connected to an output of said second audio distribution device; and a microphone mixer unit connected to said matrix circuit and to at least one microphone at said first videoconference site.
Claim 5
Dependent Claim
163 words
An audio bridging system for a videoconferencing system as claimed in claim 2, further comprising: a second coder and decoder unit; a third audio distribution device connected to said second coder and decoder unit and operable to provide one of a plurality of inputs thereof to an output connected to said second coder and decoder unit; and a fourth audio distribution device connected to said second coder and decoder unit for providing an input from said second coder and decoder unit to one of a plurality of outputs thereof, said output of said second audio distribution device being connected to one of said inputs of said third audio distribution device, and said output of said fourth audio distribution device being connected to one of said inputs of said first audio distribution device, said matrix switch having a second output connected to an input of said third audio distribution device and a second input connected to an output of said fourth audio distribution device.
Claim 6
Dependent Claim
39 words
An audio bridging system for a videoconferencing system as claimed in claim 3, further comprising: at least one speaker; and switching means connected to said second and fourth audio switching devices for providing output signals therefrom to said speaker.
References Cited (Backward Citations)
US4281410A
Cited
US4529840A
Cited
US4716585A
Cited
US4961211A
Cited
US4845749A
Cited
US4882747A
Cited
US4890314A
Cited
US4928301A
Cited
US5061992A
Cited
US5115230A
Cited
US5038224A
Cited
US5117285A
Cited
US5187571A
Cited
US5323445A
Cited
US5283638A
Cited
EP0535890A2
Cited
US5280540A
Cited
US5271057A
Cited
US5386465A
Cited
US5315633A
Cited
US5335022A
Cited
US5389963A
Cited
US5303042A
Cited
US5371534A
Cited
US5335011A
Cited
WO1994024804A1
Cited
US5374952A
Cited
US5534914A
Cited
US5526037A
Cited
US5528289A
Cited
US5568183A
Cited
US5535281A
Cited
US5483588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |