Patent US3684832A successfully refreshed from Google Patents.
US3684832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical data set/terminal tester
Assignee: Livermore Data Systems Inc
•
Filing: 1970-03-06
•
Granted: 1972-08-15
•
Expires: 1990-03-06
Abstract
Abstract A device for monitoring, recording, interfacing, and otherwise processing data in FSK or bilevel DC form including interfaces for telephone handsets, business machines, and teletype terminals, a data set, one or more magnetic tape recorders, and switching functions for performing various operations in order to test terminal units, data lines and to save on-line time when working with time-shared computers.
Inventors
- 👤 Gilbert R Marguth Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:54
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
178 words
Acoustical data set/terminal tester apparatus comprising: means for electrically interfacing with a bilevel DC data signal to provide a signal; bilevel DC modulator means for FSK modulating said signal to provide an FSK signal as a first signal, means for electrically interfacing with an FSK modulated data signal, said FSK signal having a mark frequency and a space frequency, to provide a second signal; means for receiving an FSK signal by acoustically interfacing with a telephone type handset to provide a third signal; acoustic FSK transmitting means for transmitting an FSK signal by acoustically interfacing with a telephone type handset; FSK demodulator means for demodulating an FSK signal to provide bilevel DC signal in response thereto; record/playback means for playing back an FSK tmodulated signal, as a fourth signal and for recording an FSK modulated signal; and switching means for selecting an input signal from one of said first signal, second signal, third signal and fourth signal, and for applying said selected input signal to one of said record/playback means, acoustic FSK transmitting means, and FSK demodulator means.
Claim 2
Dependent Claim
178 words
Acoustical data set/terminal tester apparatus comprising: means for electrically interfacing with a bilevel DC data signal to provide a signal; bilevel DC modulator means for FSK modulating said signal to provide an FSK signal as a first signal, means for electrically interfacing with an FSK modulated data signal, said FSK signal having a mark frequency and a space frequency, to provide a second signal; means for receiving an FSK signal by acoustically interfacing with a telephone type handset to provide a third signal; acoustic FSK transmitting means for transmitting an FSK signal by acoustically interfacing with a telephone type handset; FSK demodulator means for demodulating an FSK signal to provide bilevel DC signal in response thereto; record/playback means for playing back an FSK tmodulated signal, as a fourth signal and for recording an FSK modulated signal; and switching means for selecting an input signal from one of said first signal, second signal, third signal and fourth signal, and for applying said selected input signal to one of said record/playback means, acoustic FSK transmitting means, and FSK demodulator means.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 wherein said means for demodulating and modulating comprises a data set.
Claim 4
Dependent Claim
25 words
The apparatus of claim 2 wherein said means for electrically interfacing with an FSK modulated signal comprises isolation transformer means, and a four-pin telephone-type jack.
Claim 5
Dependent Claim
27 words
The apparatus of claim 3 wherein said means for electrically interfacing with said bilevel DC signals comprises, a 25 pin business machine jack, and level converter means.
Claim 6
Dependent Claim
151 words
Acoustical data set/terminal tester apparatus comprising: means for electrically interfacing with a bilevel DC data signal to provide a signal; bilevel DC modulator means for FSK modulating said signal to provide an FSK signal as a first signal, means for receiving an FSK signal by acoustically interfacing with a telephone type handset to provide a second signal; record/playback means for playing back a recorded FSK modulated signal as a third signal and for recording an FSK modulated signal; acoustic FSK transmitting means for transmitting an FSK signal by acoustically interfacing with a telephone type handset; FSK demodulator means for demodulating an FSK signal to provide a bilevel DC signal in response thereto; switching means for selecting an input signal from one of said first signal, second signal, and third signal, and for applying said selected input signal to one of said record/playback means, acoustic FSK transmitting means, and FSK demodulator means.
Claim 7
Dependent Claim
151 words
Acoustical data set/terminal tester apparatus comprising: means for electrically interfacing with a bilevel DC data signal to provide a signal; bilevel DC modulator means for FSK modulating said signal to provide an FSK signal as a first signal, means for receiving an FSK signal by acoustically interfacing with a telephone type handset to provide a second signal; record/playback means for playing back a recorded FSK modulated signal as a third signal and for recording an FSK modulated signal; acoustic FSK transmitting means for transmitting an FSK signal by acoustically interfacing with a telephone type handset; FSK demodulator means for demodulating an FSK signal to provide a bilevel DC signal in response thereto; switching means for selecting an input signal from one of said first signal, second signal, and third signal, and for applying said selected input signal to one of said record/playback means, acoustic FSK transmitting means, and FSK demodulator means.
Claim 8
Dependent Claim
146 words
Acoustical data set/terminal tester apparatus comprising: means for electrically interfacing with an FSK modulated data signal, said FSK signal having a mark frequency and a space frequency, to provide a first signal; means for receiving an FSK signal by acoustically interfacing with a telephone type handset to provide a second signal; record/playback means for playing back a recorded FSK modulated signal as a third signal and for recording an FSK modulated signal; acoustic FSK transmitting means for transmitting an FSK signal by acoustically interfacing with a telephone type handset; FSK demodulator means for demodulating an FSK signal to provide a bilevel DC signal in response thereto; and switching means for selecting an input signal from one of said first signal, second signal, and third signal, and for applying said selected input signal to one of said record/playback means, acoustic FSK transmitting means, and FSK demodulator means.
Claim 9
Dependent Claim
146 words
Acoustical data set/terminal tester apparatus comprising: means for electrically interfacing with an FSK modulated data signal, said FSK signal having a mark frequency and a space frequency, to provide a first signal; means for receiving an FSK signal by acoustically interfacing with a telephone type handset to provide a second signal; record/playback means for playing back a recorded FSK modulated signal as a third signal and for recording an FSK modulated signal; acoustic FSK transmitting means for transmitting an FSK signal by acoustically interfacing with a telephone type handset; FSK demodulator means for demodulating an FSK signal to provide a bilevel DC signal in response thereto; and switching means for selecting an input signal from one of said first signal, second signal, and third signal, and for applying said selected input signal to one of said record/playback means, acoustic FSK transmitting means, and FSK demodulator means.
References Cited (Backward Citations)
US26396A
Cited
US3076056A
Cited
US3227806A
Cited
US3403225A
Cited
US3417202A
Cited
US3388375A
Cited
US3517137A
Cited
US3507997A
Cited
US3544721A
Cited
US3524935A
Cited
US3515806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |