US4001507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for telephone systems for facilitating data traffic between the subscriber stations and a central data processor
Assignee: Siemens AG
•
Filing: 1975-02-12
•
Granted: 1977-01-04
•
Expires: 1995-02-12
Abstract
Abstract Method and apparatus are described for telephone systems over which data traffic can proceed and wherein individual subscriber stations can communicate directly with a data processor. The data is emitted from the processor, for example, in acoustic form. In addition appropriately formed data can be transmitted, as well, for operating a printing unit at the subscriber station. The latter data may be supplemented by further information in a code suitable for operating the printing unit and transmitted over the same communication path.
Inventors
- 👤 Franz Bonk
- 👤 Wolfgang Burger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
In apparatus for telephone systems interoperating with a data processor wherein data communication takes place between individual telephone subscriber stations having both telephone sets and printers and said data processor, said data being available upon demand at said data processor both in audio form and a form suitable for control of said printer, the improvement comprising: a plurality of subscriber line means connected, respectively, to each said subscriber station, and to both the telephone set and the printer thereat, and to a single output channel of said data processor and means for transmitting said data in said form suitable for controlling said printer following transmission of the same data in audio form.
Claim 2
Dependent Claim
112 words
In apparatus for telephone systems interoperating with a data processor wherein data communication takes place between individual telephone subscriber stations having both telephone sets and printers and said data processor, said data being available upon demand at said data processor both in audio form and a form suitable for control of said printer, the improvement comprising: a plurality of subscriber line means connected, respectively, to each said subscriber station, and to both the telephone set and the printer thereat, and to a single output channel of said data processor and means for transmitting said data in said form suitable for controlling said printer following transmission of the same data in audio form.
Claim 3
Dependent Claim
83 words
The improved apparatus for telephone systems defined in claim 1 wherein said data processor includes an acoustic generator for transforming output data signals from said data processor into acoustic signals for transmission over a said subscriber line means and further comprising: digital data transmitting means comprising converter means connected in parallel with said acoustic generator for transforming said output data signals into code characters equivalent to said acoustic signals, said acoustic generator and said converter means being connected to the same subscriber line.
Claim 4
Dependent Claim
86 words
The improved telephone system apparatus defined in claim 1 wherein said data processor includes an acoustic generator for transforming output data signals from said data processor into acoustic signals for transmission over a said subscriber line means and wherein said acoustic generator comprises: means for generating code signals equivalent to said acoustic signals for operating said printing means and means connecting said acoustic generator to an output channel from said data processor, said means being adapted to transmit said code signals after transmitting said acoustic signals.
Claim 5
Dependent Claim
84 words
The improved telephone system apparatus defined in claim 3 wherein said acoustic generator includes: frequency generating means for generating the pitch for said acoustic signals and filter means connected to the output of said frequency generating means and having a characteristic such that the rise and fall times of said filter means are negligibly small relative to the frame frequency of said code signals for operating said printing means, the frequency output of said frequency generating means being sufficiently high to produce this result.
References Cited (Backward Citations)
US3153121A
Cited
US3344401A
Cited
US3431362A
Cited
US3507997A
Cited
US3529088A
Cited
US3732541A
Cited
US3641500A
Cited
US3694811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |