Patent US3867578A successfully refreshed from Google Patents.
US3867578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adapter for automatic telephone answering devices permitting remote monitoring of recorded messages
Assignee: AG Communication Systems Corp
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Filing: 1973-09-28
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Granted: 1975-02-18
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Expires: 1993-09-28
Abstract
Abstract An adapter circuit for use with an automatic telephone answering and message recording machine. The adapter permits a subscriber equipped with a portable tone generator to playback and review recorded messages from a remote location. Control of the tape rewind is also done from the remote location.
Inventors
- 👤 Francis Y Uechi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:59
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/652
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
243 words
In combination a telephone line, a telephone answering and recording machine, said machine initially connected to said telephone line and rendered operated in response to Receipt of an incoming call over said telephone line, and an adapter, said adapter including: record and playback equipment operable in record, playback and rewind modes; monitor means connected between said machine and said record and playback equipment, operated in response to said machine receiving an incoming message over said telephone line, to operate said record and playback equipment in the record mode; first signal detection means connected between said monitor means and said record and playback equipment, initially operated in response to receipt of a first tone signal of a first predetermined frequency received over said telephone line, to disconnect said machine from said telephone line, connect said telephone line to said record and playback equipment and operate said record and playback equipment in the playback mode; second signal detection means connected between said telephone line and said record and playback equipment initially operated in response to receipt of a tone signal of a second predetermined frequency received over said telephone line to operate said record and playback equipment in the rewind mode; said second signal detection means further operated in response to termination of said tone signal of said second predetermined frequency to terminate operation of said record and playback equipment in the rewind mode and reoperate said record and playback equipment in the playback mode.
Claim 2
Dependent Claim
243 words
In combination a telephone line, a telephone answering and recording machine, said machine initially connected to said telephone line and rendered operated in response to Receipt of an incoming call over said telephone line, and an adapter, said adapter including: record and playback equipment operable in record, playback and rewind modes; monitor means connected between said machine and said record and playback equipment, operated in response to said machine receiving an incoming message over said telephone line, to operate said record and playback equipment in the record mode; first signal detection means connected between said monitor means and said record and playback equipment, initially operated in response to receipt of a first tone signal of a first predetermined frequency received over said telephone line, to disconnect said machine from said telephone line, connect said telephone line to said record and playback equipment and operate said record and playback equipment in the playback mode; second signal detection means connected between said telephone line and said record and playback equipment initially operated in response to receipt of a tone signal of a second predetermined frequency received over said telephone line to operate said record and playback equipment in the rewind mode; said second signal detection means further operated in response to termination of said tone signal of said second predetermined frequency to terminate operation of said record and playback equipment in the rewind mode and reoperate said record and playback equipment in the playback mode.
Claim 3
Dependent Claim
49 words
The combination as claimed in claim 1 wherein said adapter further includes: rewind alarm means operated in response to said record and playback equipment completing said rewind mode of operation to generate a warning signal indicating completion of said rewind mode and couple said warning signal to said line.
Claim 4
Dependent Claim
60 words
The combination as claimed in claim 1 wherein: said first signal detection means initial operation further connects said first signal detection means to said line; said first detection means further operated in response to a second tone of said first predetermined frequency from said telephone line to disconnect said line from said adapter and reconnect said line to said machine.
Claim 5
Dependent Claim
37 words
The combination as claimed in claim 1 wherein: said adapter further includes line termination means operated in response to said initial operation of said first signal detection means to connect a terminating impedance to said telephone line.
Claim 6
Dependent Claim
39 words
The combination as claimed in claim 1 wherein: said first signal detection means comprise a relay, and a filter circuit designed to couple output signals in response to receipt of signals of said first predetermined frequency, to said relay.
Claim 7
Dependent Claim
48 words
The combination as claimed in claim 1 wherein: said second signal detection means comprise a relay, and a filter circuit connected between said telephone line and said relay, operated in response to receipt of signals of said second predetermined frequency to couple an output signal to said relay.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |