US5495485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission of analog and digital information across a single line
Assignee: Canon Inc
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Filing: 1995-02-15
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Granted: 1996-02-27
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Expires: 2015-02-15
Abstract
Abstract Apparatus for sending and receiving both analog and digital information from a single information transmission medium. The apparatus includes a core processor (200), including a digital signal processor (DSP) (212) or a CPU/DSP, in communication with an integrated services digital network (ISDN) interface (204). The core processor (200) also may be in communication with a personal computer (PC) (202). The invention also is directed to a related method, including a series of modules.
Inventors
- 👤 Dirk Hughes-Hartogs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:10
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0435; H04Q11/0471; H04Q2213/00; H04Q2213/09; H04Q2213/093; H04Q2213/096; H04Q2213/179
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
Digital apparatus for sending and receiving analog and digital information to and from a single information transmission medium, said apparatus comprising: A. an integrated services digital network ISDN interface coupled to the transmission medium, the ISDN interface including at least a first connection and a second independent connection; and B. coupled to the ISDN interface, a digital signal processor DSP not containing any codecs and comprising: means for distinguishing, in real time, a first data type associated with the transmission medium at the first connection and a second data type concurrently associated with the transmission medium at the second connection; and means for coupling: a) a direct digital representation of voltage associated with one of said data types and b) one of the connections.
Claim 2
Dependent Claim
124 words
Digital apparatus for sending and receiving analog and digital information to and from a single information transmission medium, said apparatus comprising: A. an integrated services digital network ISDN interface coupled to the transmission medium, the ISDN interface including at least a first connection and a second independent connection; and B. coupled to the ISDN interface, a digital signal processor DSP not containing any codecs and comprising: means for distinguishing, in real time, a first data type associated with the transmission medium at the first connection and a second data type concurrently associated with the transmission medium at the second connection; and means for coupling: a) a direct digital representation of voltage associated with one of said data types and b) one of the connections.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1, wherein the first connection represents analog data and the second connection represents digital data.
Claim 4
Dependent Claim
25 words
The apparatus of claim 2, wherein G3 facsimile data is received at the first connection and G4 facsimile data is received at the second connection.
Claim 5
Dependent Claim
31 words
The apparatus of claim 2, wherein the distinguishing means comprises means for distinguishing between G3 facsimile data received at the first connection and V.32bis communication data received at the first connection.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1, wherein the first data type comprises G3 data, and wherein the second data type comprises G4 data.
Claim 7
Dependent Claim
34 words
The apparatus of claim 1, wherein the ISDN interface includes a plurality of B-channels, the coupling means comprising terminal interconnection means for selectively transmitting data having a predetermined format along one of the B-channels.
Claim 8
Dependent Claim
17 words
The apparatus of claim 1, further comprising a personal computer PC in communication with the ISDN interface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-26 | 1999-08-28 | 2000-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-26 | 2003-08-28 | 2004-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-26 | 2007-08-28 | 2008-02-27 | $7700.00 | Window Closed / Lapsed |